World's Best ASHP:

The R/OPACK units from NEXTHERM have advanced inverter drive compressors and are for heating/cooling. They are available in five sizes to closely match the needs of the home and are also capable of providing the domestic hot water for the home.

The brand is made in France and is backed by a very good warranty.

Other Air Source Heat Pump Ratings

We continue our air source heat pump ratings with an alphabetical list of manufacturers and reviews of their products. 

BRAND----------WEBSITE----------RATING

AERMEC--------aermec.com----------<1*

This brand is from AERMEC SpA which is a part of the RIELLO GROUP and the systems are available worldwide. The ANK models are basic heat pumps with durable scroll compressors while the ANKI models have state of the art inverter compressors. They are monoblock units where everything is installed outside of the home. The HBI model is a split unit with the compressor outside and the hydronic package on the inside which is easier to install in some conditions. The manufacturer's website is not much help and does not have a stated warranty policy.

AIRWELL------  airwell-res.com  -----<1*

The PAC HT units are available in both split and monoblock models. They feature two stages of operation but use dual compressors to accomplish this which is not the preferred method. They use 50 HZ power which is not compatible with the grid in North america.

AKL------------  akl-e.com  -----------<1*

These heat pumps are made in China and are sold in Europe, Asia, & South America. The F1/V1 models feature advanced inverter drive compressors and they are available in four sizes. The F1 models are split systems while the V1 units are single piece units that are mounted outside the home. They are for heating, cooling, and DHW production but their website does not have a stated guarantee for the units.

AMITIME--------amitime.com---------<1*

The HEATSTAR units feature advanced inverter drive compressors and are available in either split or monobloc units as well as an "all-in-one" model that has a built-in water heater tank. They have dual temperature setpoints for the independent control of two separate heating systems. The brand is made in China and their website is not much help. 

AMZAIR----------amzair.eu-------------1*  

The BBC SILENZ range offers units for installation indoors as well as outdoor models. They are basic heat pumps for central heating and dhw production. The OPTIM'DUO units are designed for the low energy home industry. They have the heat pump and domestic water storage in the same unit with discreet ducts to the outside. The brand is made in France but the guarantee on the units is not as good as some of the other brands.

ASEAIR-----------aseair.cn------------<1*  

This brand is made in China by GUANGDONG LETTER O HEAT PUMP CO. LTD and offers three sizes of heat pumps. They are sold through authorized distributors in China but their website is not much help and does not have a stated warranty policy.

ATLANTIC--  atlantic-comfort.com  -<1*

The ALFEA' line offers a variety of units that use inverter drive compressors as well as units with built-in gas or oil burners. The EXCELLIA DUO models are combination units that provide domestic hot water as well as optional cooling for the home. The manufacturer's website is minimal help and does not clearly state the guarantee on their products.

AXEN-----  axen-heatpump.com  ----<1* 

The ECO THERMA units are for heating/cooling/dhw while the EVI ECO heat pumps are for cooling and heating. The brand is made in China and features durable stainless steel plate heat exchangers.

BARTL----------bartlwp.de-------------<1* 

These units are made in Germany and are sold throughout Europe but have a very limited network. They offer both units for indoor and outdoor installation. They feature scroll compressors and stainless steel heat exchangers for durability and offer a two stage model. The manufacturer's website is not much help and does not have a stated warranty policy.

BAYMAK--------baymak.com.tr--------<1* 

This brand is a part of BDR THERMEA and is made and sold in Turkey. They offer both split and monoblock models but their website is not much help and the guarantee on the units is not very good when compared to other brands.

BERETTA------berettaboilers.com-----<1* 

This brand is available in Europe, China, and South America. They have advanced inverter compressors and are for cooling as well as heating and domestic hot water production. Their website is not much help and the units are only available through their dealer network.

BLUEBOX------blueboxcooling.com---<1* 

These units are made in Italy and the brand is a part of SWEGON GROUP. The GEYSER 2 series offers a wide variety of sizes of units to match the needs of any home. They offer both high and medium temperature units that are suitable for a wide range of applications. They provide cooling as well as heating and dhw production and have advanced inverter drive compressors.

BUDERUS-------buderus.de-----------<1* 

This brand is a part of the BOSCH THERMO GROUP. The LOGATHERM WPLS units feature a Mitsubishi outdoor unit coupled with a Buderus indoor unit. They have inverter drive compressors and are available in three sizes. The manufacturer's website is not much help and does not have a stated warranty policy.

C & H------cooperandhunter.ua------<1*  

This brand offers units with advanced inverter compressors and durable stainless steel heat exchangers. The UNITHERM models are available in five sizes and are for cooling as well as heating and DHW production. They feature programmable controls but the units are only sold through authorized dealers in Eastern Europe. Their website does not have a stated guarantee for their products.

CHILTRIX-----------chiltrix.com------<1*

The CX34 heat pumps Feature state of the art inverter technology for the water pump as well as the compressor. Their control system precisely adjust the speed of the pump and the compressor to exactly match the required heating or cooling load. The guarantee on parts other than the compressor is not very good when compared to other brands.

CHOFU---------chofu.co.jp-------------<1*

These heat pumps are made and sold in Japan. They provide both heating and cooling and use advanced inverter drive compressors and fan motors. They have a built-in backup electric heater and an automatic air eliminator. Their website is not much help and does not have a stated warranty policy.

CIAT------------ciat.com--------------<1* 

These heat pumps are made in France and are sold in Europe and North Africa. The YUNA II is split unit that is available in six different models and includes a variable speed circulator pump and compressor. The unit can serve two independent low to medium temperature zones as well as providing domestic hot water. The EREBA is a monoblock model for heating and cooling. Their website is not much help and does not have a stated guarantee for their products.

CLIMAVENETA---climaveneta.com----<1* 

This brand is a part of the MITSUBISHI ELECTRIC and is available in worldwide. The PRANA i-NRG heat pumps (shown here) offer state of the art inverter compressors for efficiency and have stainless steel heat exchangers for durability. They have "full floating" controls that monitor and adjust fan and pump speeds to maximize efficiency. The unit can be installed either indoors or outdoors for flexibility but the manufacturer's website does not have a stated warranty policy. The AW HT heat pump is a high temperature heating only unit that can be used to power traditional radiators. 

COMISA---------comisaenergy.it------<1* 

These heat pumps are made in Italy and are sold throughout Europe. The ACW models are available in four sizes and are for heating, cooling, & DHW production. They feature state of the art variable speed compressors as well as variable speed pumps but their website is not much help and does not have a stated guarantee for them.

CTC---------  ctc-heating.com  -------<1* 

The EcoAIR models are available in six sizes to match the size of the home but they are for heating and DHW only. They feature state of the art variable speed compressor technology for energy savings. The brand is a part of ENERTECH GROUP and the units are made in Sweden. They are available through distributors in Europe as well as in Australia and New Zealand but the standard warranty on the units is not very good.

DAISHIBA------daishiba.com.cn------<1* 

This brand offers units with durable stainless steel heat exchangers. They offer both split and monobloc models but their website is not much help and does not have a stated warranty policy.

DIETRICH dedietrich-heating.com <1*

The ALEZIO range features units with inverter compressors for maximum energy savings. The units are available in sizes from 6 to 16kw and are for cooling as well as heating.The brand is a part of BDR but their guarantee is not very good when compared to other brands.

DENTWITON------dentwiton.com----<1*  

The AW SERIES heat pumps feature durable scroll compressors and flat plate heat exchangers. They offer an optional variable speed pump but their website does not have a stated warranty policy. The brand is a part of ZHEJIANG MATERIALS INDUSTRIAL GROUP and is made in China.

DIMPLEX--------dimplex.de-------------1* 

This brand is a part of the GLEN DIMPLEX GROUP based in Ireland. The SPLYDRO model offers split heating/cooling/dhw units with inverter compressors and weather compensating controls for energy savings. The brand also offers monoblock units for either indoor or outdoor installations but all of the units use 400 volt 50 hz power which is not normally available in North America. The guarantee on the units is not very good when compared to other brands.

DISMY-----------dismy.cn-------------<1* 

These heat pumps are made in China by ROYAL SIMAI ENVIRONMENTAL EQUIPMENT CO. They are basic units for cooling as well as heating and domestic hot water. Their website is not much help and does not have a stated warranty policy.

ECA TECHNOLOGY--ecatech.it--------<1* 

This brand is made in Italy and is sold throughout Europe. The ACQUA INVERTER models have advanced inverter drive compressors and are for heating, cooling and DHW production. Their website is not much help and does not have a stated warranty policy.

ECO AIRPUMP--ecoairpump.co.uk----<1* 

These units feature scroll compressors for reliability and weather compensated controls for efficiency. The units do not have an integrated water pump therefore there is added expense for installation. The units are available in five sizes and with either the standard powder coated cabinet or stainless steel cabinets. These heat pumps are made in China and are sold in the U.K. but their guarantee is not very good when compared to other brands.

ECOFOREST-----ecoforest.es----------<1*

These heat pumps are made in Spain and are sold in Europe. The AEROTHERM models have advanced inverter drive compressors, variable speed pumps and electronic expansion valves for energy savings. They are available with either passive or active cooling but their website does not have a stated guarantee on the units.

ECOLOGIX-------ecologix.ca----------<1* 

This brand is made and sold in Canada. They are available in three sizes and are designed for operating efficiently in cold climates (down to -25C). The units use a state of the art variable capacity compressor but it is located in the indoor unit which is different from most other brands and could lead to noise issues for some homeowners. Their website is not much help and does not have a stated guarantee for their products.

EKO WARRIOR--heatandsave.com-<1*

This brand is made in the U.K. by HEAT AND SAVE LTD. The units feature advanced inverter compressors and weather compensation controls for added energy savings. Their website is not much help and the warranty on the heat pumps is not very good.

ELCO-------------elco.at-----------------5* 

The AEROTOP G units feature modulating control with weather compensation for energy savings. The units are very quiet and are available in a durable stainless steel cabinet. The brand is made in Switzerland and is a part of the ARISTON THERMO GROUP. The units are available in four sizes to match the size of the home and are backed by a very good guarantee.

EMMETI---------emmeti.com----------<1* 

These heat pumps are made and sold in Italy. They offer units with standard compressors as well as the MIRAI inverter compressor models. The MIRAI SMI (FEBOS-HP) version can be controlled and monitored remotely through a smartphone or tablet. The units are made in Japan but their guarantee is not very good when compared to other brands.

ENERGO----  energo-swiss.ch  --------<1*

The ZERMATT range offers heat pumps with inverter compressors and use EVI refrigerant technology for consistent performance over a wide range of outdoor temperatures. The units are for heating only and their website is not much help. 

ESP----earthsaveproducts.com-------<1* 

These units are from EARTH SAVE PRODUCTS LTD. and are available in Europe. They are for both heating and cooling as well as domestic hot water production. The VARIMAX units have inverter compressors and dc fan motors for quiet efficient operation. They also offer a high temperature model for use in colder climates or with older radiators. The manufacturer's website is not much help and does not have a stated warranty policy.

EURONOM--------euronom.se---------<1* 

These units are made in Sweden and are available in Europe for heating and hot water generation only. They are made of stainless steel and have scroll compressors for durability. The EXOAIR units are standard units while the EXOAIR POLARIS models are designed for cold climates. Their website does not have a stated guarantee for their products.

FEDDERS-------fedders.com----------<1*  

The F-MQHD models are for heating and cooling and are available in eight sizes. They have inverter compressors but the manufacturer's website is not much help.

FERROLI---------ferroli.it--------------<1*

This brand is made in Italy and offers both units for normal climates (HXA models) and heat pumps for nordic climates (HXP models). They are available as heating only or heating/cooling units but their website is not much help and does not have a stated warranty policy.

FUJITSU----  fujitsu-general.com  ----<1* 

The WATERSTAGE comfort type series units feature inverter compressors. The standard units are for heating and DHW production but they offer optional cooling. They offer both split and monobloc models but their website is not much help and does not have a stated guarantee for their products.

GALMET-------galmet.com.pl----------<1* 

This brand is made and sold in Poland through their distributor network. The AIRMAX 2 units are for heating and DHW only. They have electronic controls, durable scroll compressors, and modulating fans for maximizing efficiency. They are available in four sizes but the guarantee on them is not very good when compared to other brands.

GLOBAL ENERGY SYSTEMS--globalenergysystems.co.uk--<1* 

The ECO AIR BOILERS are made and sold in the U.K. They offer four sizes of heat pumps that are made for central heating and dhw production but their guarantee is not as good as some brands.

GRANT----------grantuk.com----------<1* 

This brand is made and sold in the U.K. but their guarantee is not as good as other brands. The AERONA range offers units for heating only in three sizes from 6 to 16 kw. They have an integrated weather compensation control as well as state of the art inverter drive compressors for added energy savings. They have a 3 kw backup immersion heater for emergencies.

HARVEST--------harvest.cn-----------<1* 

These units are sold in Europe, Asia, and South America. They are basic models and are available in four sizes. They also offer models with durable stainless steel cabinets. Their website is not much help and does not have a stated warranty policy.

HAUTEC---------hautec.eu-----------<1*

These units are made in Germany and are available throughout Europe. The HWL-A models are made of stainless steel for durability and offer an active cooling option for comfort all year long. Their website is not much help and does not have a stated warranty policy.

HEIM----------  heim-ag.ch  ----------<1*

This brand is made by HOME HEATING SYSTEMS AG and is sold in Switzerland. They offer units for internal or external installation as well as split systems. They also feature heat pumps with inverter compressors but their website is not much help and does not have a stated warranty policy. 

HELIOTHERM----heliotherm.at--------<1* 

This brand is made in Austria and is sold throughout Europe. They offer a COMPACT unit that is designed to be mounted indoors but this concept does not make much sense. The SPLIT SYSTEM is for normal outdoor installations. They offer heating/dhw units as well as heat/cool/dhw units. The brand offers units that use a patented working fluid injection technology (dsi-technology) for added efficiency and offer modulating units to more closely match the requirements of the home. The manufacturer's website is not much help and does not have a stated warranty policy.

HERZ---------  herz-energie.at  ------<1* 

These heat pumps are sold worldwide but only through their somewhat limited dealer network. The COMMOTHERM units are basic heat pumps for heating and domestic hot water production as well as passive cooling. Their website is not much help and does not have a stated guarantee for their products.

HIDROS---------hidros.eu------------<1*  

These heat pumps are made in Italy and are sold throughout Europe. The WZT models are split units that provide cooling as well as heating and are available in a variety of sizes. They use durable stainless steel plate heat exchangers and microprocessor based controls. The LZi models are one piece units with advanced inverter compressors. Their website does not have a stated guarantee for their products.

HISEER--  hiseer-heat-pump.com  --<1*  

This brand is made in China and offers both heating only and heating/cooling models. The EVI model is a split system heat pump that has a state of the art inverter compressor for reliability and energy savings. Their website is not much help and does not have a stated warranty policy.

HITACHI-----hitachiaircon.com--------<1* 

The YUTAKI M models are for heating & DHW only while the YUTAKI S is for cooling as well as heating. They use inverter compressors and weather compensating controls for added energy savings. The brand is only available in Europe and their website does not have a stated warranty policy.

HIWARM---------hiwarm.it-------------<1*

This brand is made in Italy by GALLETTI AIR CONDITIONING and is sold in Europe. The units are fro heating, cooling, & DHW production. Their website is not much help and does not have a stated guarantee for their products.

HOVAL-----------hoval.ch-------------<1*  

The BELARIA range offers a variety of heat pumps including a modulating unit (variable speed) with cooling. Their website is not much help and does not have a stated warranty policy.

HUSKY----huskyheatpumps.co.uk----<1*  

These heat pumps are made and sold in the U.K. They offer three sizes and feature intelligent defrost for added energy savings. They have stainless steel coils and plate heat exchangers for durability but the guarantee is not as good as some of the other brands.

IDM-------   idm-energie.at  ---------<1*  

The TERRA ML units feature their Navigator control system which can control up to seven different heating zones. The units have a modulating output and provide cooling as well as heating and domestic hot water. The brand is only available through dealers in Europe and their website does not have a stated guarantee on their products.

IMMERGAS----immergas.com---------<1* 

These heat pumps are made in Italy and are available in Europe. The MAGIS COMBO 8 models feature advanced inverter drive compressor technology. They also have a variable speed fan and are for cooling as well as central and domestic hot water heating. The manufacturer's website is not much help and does not have a stated warranty policy.

INNOVA------innovaenergie.com------<1* 

The EHPOCA heat pumps have inverter compressors as well as outdoor fan motors for quiet and efficient operation. They are made in Italy and are for cooling, central heating, & domestic hot water production. Their website is not much help and does not have a stated guarantee for their products.

ITHO---------ithodaalderop.com-------1*  

The COOL CUBE models combine a heat pump and a condensing boiler to provide for central heating and domestic hot water. The brand is only available through a limited dealer network in Europe and Canada. Their website is not much help but they are backed by a decent warranty.

IVT-------------ivt.se--------------------4*

This brand is a part of the BOSCH THERMOTECHNOLOGY GROUP and is available in Europe. The AIRX models use advanced inverter compressor technology and can even be controlled with a mobile app. They are very quiet, efficient, and are backed by a very good guarantee.

JASPI-----------kaukora.fi-------------<1* 

The JAMA MOON units are available in Europe and feature durable scroll compressors and a two stage fan but they are for heating and DHW only. Their website is not much help and does not have a stated warranty policy.

JOANNES-------joannes.it-------------<1* 

This brand is made and sold in Italy by FINTERM SpA. The JXA units feature state of the art inverter compressors and are for cooling as well as heating and dhw. Their website is not much help and does not have a stated guarantee for their products.

KINKAI----------ikinkai.com-----------<1* 

These units are made in China by GUANGZHOU KAINENG ELECTRIC EQUIPMENT CO. LTD. They offer units for central heating only or heating/domestic hot water as well as heating & cooling. The units feature hydrophilic coated coils and electronic vapor injection for durability as well as an integrated water pump for convenience in installation. The warranty on the units is not very good when compared to other brands.

KNV-------------knv.at-----------------<1* 

This brand is a part of the NIBE GROUP and is available in parts of Europe. The GREENLINE LWSE-F units are for heating & cooling and have a variable speed outdoor fan for efficient quiet operation. They use electronic vapor injection which allows for efficient operation even at very low outdoor air temperatures. They have a modern touch screen control that can be adjusted with your smartphone. Their website is not much help and does not have a stated warranty policy.

KOLANT---------kolant.com-----------<1*  

This brand is made in China and offers heat pumps for cooling as well as heating. The RJP models feature inverter compressors and have a built-in circulator pump and expansion vessel for easier installation. They also offer an EVI model that is suitable for heating operation even at very low outdoor air temperatures. The guarantee on the compressor is not very good when compared to other brands.

LAILEY & COATES--laileyandcoates.co.uk--<1* 

These units are made and sold in the U.K. They use advanced inverter drive compressors as well as variable speed fans and pumps. They are available in monoblock or split models and have automatic weather compensation controls for energy savings. Their website does not have a stated guarantee for their products.

LAMBORGHINI--lamborghinicalor.it--<1* 

The Lfp E-HD units have inverter compressors, variable speed fans and durable stainless steel brazed plate heat exchangers. They provide for cooling as well as heating and domestic hot water but their website is not much help and does not have a stated warranty policy.

MASTERTHERM---mastertherm.eu----<1*

This brand is made in the Czech Republic and is sold throughout Europe. The EASYMASTER is a basic air source heat pump for heating/cooling as well as domestic hot water. The units have electronic expansion valves for more efficient operation and are a good option for those who are really price conscious. The BOXAIR INVERTER model features a state of the art inverter drive compressor for energy savings as well as EC fan motors for quiet and durable operation. They are monobloc units that are designed to be installed inside a designated heating plant room.

MAXA-----------maxa.it--------------<1* 

These heat pumps are made and sold in Italy. The i-SHWAK models are state of the art split heat pumps featuring inverter drive compressors and modulating pumps for energy savings. The basic warranty on the units is not very good but it can be extended for a fee.

METRO THERM---metrotherm.dk-----<1* 

This brand is a part of NIBE GROUP and is sold in Denmark, Sweden, Norway, & Finland. The Metroair units are for heating and dhw only because they are designed for colder northern climates. Their website is not much help and the warranty is not very good.

MHG--------mhgheating.co.uk--------<1* 

These heat pumps are made in Germany. The THERMIAIR units feature inverter compressors and weather compensating controls for energy savings. They are designed for existing homes and to be added to existing heating systems. The THERMISTAR L models use standard scroll compressors and are more suited to new homes. They offer optional passive or active cooling but their website is not much help and does not have a stated guarantee for their products.

MINT--------mintrenewables.co.uk-----3* 

The MLCM units are made and sold in the U.K. The units feature a touch screen controller and are optimized for heating. They are available in three sizes and are backed by a good warranty.

MITSUBISHI ELECTRIC--mitsubishielectric.com--<1* 

The ECODAN heat pumps use state of the art inverter compressor technology but are only for central heating and domestic hot water production.

MUNDOCLIMA---mundoclima.com---<1* 

The AEROTHERM SERIES units are for heating, cooling, and DHW production. They have advanced inverter drive fans and compressors for quiet efficient operation. They are available in four sizes and have electronic controls but their website is not much help. The brand is available in Europe, Latin America, and North Africa.

NEURA-----------neura.at-------------<1* 

The NDA PREMIUM units are available in Europe in six sizes to match the size of the home. Their WEBDIALOG system allows the units to be controlled remotely through a tablet or smartphone. They offer both split and monoblock units but their website is not much help and does not have a stated guarantee for their products.

NEW ENERGY---  nuove-energie.it  --<1*

This brand is a part of VIESSMANN GROUP and is made and sold in Italy. The ENERGYCAL heat pumps are for cooling as well as heating and dhw production. They are available in four sizes but their website is not much help and does not have a stated warranty policy.

NEXTHERM-------nextherm.fr-----------5* 

The AERTHERMAL units have advanced inverter drive compressors and are for heating/cooling. The brand is made in France and is backed by a very good warranty.

NIBE------------nibe.eu----------------<1* 

This brand offers units for heating & DHW only or for heating & cooling.

The F2120 model has a self-adjusting control system for true plug and play installation but it uses three phase power. The NIBE SPLIT HBS05 features an inverter compressor and is available in three sizes. Their website does not have a stated guarantee for their products.

NORDIC----------nordicghp.com-------2* 

The brand is made in Canada by MARITIME GEOTHERMAL LTD. and is available through dealers in North America, Ireland, and Romania. The ATW SERIES heat pumps are for heating/cooling as well as domestic hot water production. They feature intelligent defrosting but the units are different in the fact that the compressor is located inside the home while only the coil is outside. The result is more noise from the indoor unit but they offer an optional two stage compressor which would minimize this effect and they are backed by a pretty good guarantee.

NORDLINE--  nosreti-cerpadla.cz  ---<1*  

This brand offers basic heat pumps for heating and DHW production. They are available in both split and monoblock models and are backed with a decent guarantee but their website is not much help.

OCHSNER------int.ochsner.com-------<1*

These units are available throughout Europe and offer a wide range of models to choose from. The ELW models feature state of the art inverter compressors and advanced electronic controls for added efficiency. The manufacturer's website is not much help and does not have a stated warranty policy.

OLIMPIA SPLENDID--olimpiasplendid.com--<1* 

This brand is made in Italy and features units with inverter compressors for quiet efficient operation. The SHERPA AQUADUE models have programmable controls and are for cooling as well as heating & DHW production. They have inverter drive compressors and weather compensating controls for added energy savings. Their website is not much help and does not have a stated guarantee for their products.

PANASONIC------panasonic.eu-------<1* 

The AQUAREA heat pumps are for heating/cooling and have inverter compressors. The brand is available throughout Europe but only through their factory authorized dealer network. The brand features units in split as well as monoblock models that can be controlled from your smartphone. Their website is not much help and the guarantee is not very good when compared to other brands.

PHNIX--------  phnix-e.com  ---------<1*

This brand is made in China and is sold worldwide. The KK series offers basic heat/cool units with temperature compensating controls and electronic expansion valves for added energy savings. They have a built-in water pump for easy installation and are available in six sizes to match the needs of any home. The HERO SERIES offers units with advanced inverter drive compressors and intelligent defrosting for energy savings while the Polaris series is designed for cold climates. Their website does not have a stated guarantee on the units.

REMKO----------remko.de-------------<1*

These heat pumps are available in Europe and feature state of the art inverter compressor technology. They have an integrated domestic hot water storage tank available. The ARTSTYLE units are very stylish and do not need to be hidden in the landscaping of the yard. They feature state of the art inverter compressors and EC fan motors as well as EC water circulator pumps for efficient operation. They have intelligent defrosting and offers control of three separate heating zones. Their website is not much help and does not have a stated warranty policy.

RHOSS----------rhoss.com------------<1* 

This brand is a part of the IRSAP GROUP. The ELECTA THAITY models feature inverter compressors and electronic expansion valves for quiet efficient operation. They have durable stainless steel plate heat exchangers but their website is not much help and does not have a stated guarantee for their products.

ROTABERG------abatronic.com--------<1*

These heat pumps are available in Europe. They offer both split and monobloc types featuring advanced inverter compressors. They are for cooling as well as heating and DHW production but their website does not have a stated warranty policy.

ROTEX----  rotex-heating.com  -------<1* 

This brand is made in Germany and is sold throughout Europe. The HPSU (HeatPumpSolarUnit) is designed to be combined with their solar water heating system as part of their EcoHybrid heating system for hydronic heating, DHW production, & cooling. Rotex is a part of the DAIKIN GROUP.

SAMSUNG-----samsung.com.uk-----<1*

This brand offers both split and monoblock models but they use basic technology. Their website is not much help and does not have a stated guarantee for the units.

SILE-----------sile.it--------------------<1*

The NA models are standard heating/dhw units while the RA models are for cooling as well. The RAi models have advanced inverter compressors but their website is not much help and does not have a stated warranty policy. The brand is available in Europe but has a very limited distribution network.

SINCLAIR--sinclairheatpumps.eu--<1*  

The S THERM models are basic heat pumps for heating, cooling, & DHW production. They have weather compensating control in the heating mode but their website is not much help and does not have a stated warranty policy.

SIRAC---------hpsirac.com------------<1*

These heat pumps are made in China and are available in four sizes. They have durable scroll compressors and digital controls with outdoor temperature reset function. They offer optional cooling but their website is not much help and the warranty is not very good.

SOFATH--------sofath.com------------<1* 

These units are available in Europe and the brand is a part of BDR THERMEA. The LIZEA line offers heating only models that use advanced inverter drive compressors. Their website is not much help and the guarantee on the units is not very good.

SPACEPAK------spacepak.com--------<1*

The SOLSTICE range offers standard heat pumps as well as units for low ambient temperatures. The brand is a part of MESTEK and is available through dealers in the USA and Canada but their website does not have a stated warranty policy. 

STIEBEL ELTRON-- stiebel-eltron.co.uk  <1* 

This brand offers heating and hot water only units as well as units that also provide cooling. The WPL 10 AC units are basic while the WPL 13-23 COOL units provide year round comfort and have an inverter drive compressor. They feature an electronic expansion valve for improved efficiency and maximum comfort. Their website does not have a stated warranty policy.

TECHNIBEL------technibel.com---------1* 

These units are made in France and sold in Europe, Chile, and Niger. The brand is a part of NIBE ENERGY SYSTEMS. The AQUASET range offers both split and monoblock units. They are available in a variety of sizes from 5 to 25 KW and feature energy saving inverter compressors. The warranty on the units is not as good as some of the other brands that are available.

TERMOGAMMA----termogamma.ch---<1* 

This brand is a part of ARISTON THERMO GROUP. The FOREVER GREEN line offers both heating only units or heat/cool models. They are available in a wide range of sizes to match the size of the home. Their website is not much help and does not have a stated guarantee for their products.

THERMIA--------thermia.com--------<1* 

This brand is a part of the DANFOSS GROUP and is sold in Europe. The ATEC heat pumps are available in six sizes to match the needs of the home. They feature a variable speed fan and circulator pump as well as an electronic expansion valve. The PLUS & TOTAL models also have a tank for the production of domestic hot water. Their website does not have a stated warranty policy.

TONONFORTY-------tonon.it----------<1*

These heat pumps are made in Italy and sold throughout Europe. They offer a wide selection of models but their website is not much help and does not have a stated warranty policy.

TOSHIBA--  toshiba-aircon.co.uk  -----1* 

The ESTIA is a complete heating/cooling/hot water system. It features a state of the art inverter compressor, high efficiency plate heat exchangers, and a stainless steel storage tank. The systems are available in three sizes and are available throughout Europe. The guarantee on the units is not as good as other brands.

UNICAL--------unicalboiler.com------<1* 

This brand is made in Italy. The HP_OWER units feature state of the art inverter compressors as well as a built-in pump, expansion tank, and air vent for easier installation. Their website is not much help and does not have a stated warranty policy.

VENCO----------venco.net-------------<1* 

This brand is made in Italy and is a part of ALISEO GROUP. The PICO-AE units are available in eight sizes to match almost any home. They feature durable scroll compressors but their website is not much help and does not have a stated warranty policy.

VOKERA---------vokera.co.uk---------<1* 

This brand is a part of the RIELLO GROUP and the units are available in the U.K. and Ireland. The ariaPRO units are mono-block models that are only for central heating and domestic hot water production. They are available in five sizes and feature state of the art inverter compressors and a boost function for quick response to a heating demand. 

WATERKOTTE----waterkotte.eu-------<1* 

This brand is made in Germany and is sold throughout Europe. The ECO TOUCH units feature electronic touch pad controls and inverter compressors. They have a durable stainless steel DHW tank and variable speed circulator pumps. Their website does not have a stated guarantee for their products.

WOLF--------wolf.eu------1* 

The BWL-1S (B) units are for cooling as well as central heating and domestic hot water production. The units have state of the art inverter drive compressors to closely match the heating or cooling needs of the home. The heat pumps are backed by a good warranty.

WOTAC-------  wotac-e.com  ---------<1*

These heat pumps are made in China. The MINI series offers basic heating & cooling units. The DC INVERTER series uses state of the art inverter compressors. Their website is not much help and does not have a stated warranty policy.

ZANTIA----------zantia.com----------<1*  

The MONTREAL PLUS units are for low temperature heating as well as domestic hot water production. They feature standard fixed speed scroll compressors while the TORONTO PLUS heat pumps feature inverter drive fans and compressors for energy savings. The TORONTO PLUS units are for cooling as well as central heating and domestic hot water production but the guarantee is not very good when compared to other brands.

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