Top Integrated Unit: 

The PROFESSIONAL PRESTIGE series units from RHEEM have a 50 gallon storage capacity and smart controls. They are designed for easy installation with no major changes required to the water connections from a standard 50 gallon electric storage water heater. They have durable stainless steel backup electric heating elements and a user friendly LED control panel. The units have three modes of operation including a high demand mode which uses both the heat pump and the electric elements to ensure plenty of hot water. They don't offer a unit bigger than the 50 gallon and use basic tank technology (glass-lined) but the warranty is good.

 World's Best Split System: 

The INVENTOR brand offers two sizes of water heaters and features advanced inverter drive compressors. Their website is not much help but they are backed by a good warranty.

  The Best Add-On Unit: 

The Green Star retrofit model from USI Green Energy is the best bet for upgrading an existing storage water heater. The units are relatively easy to install and are backed by a good warranty.

Other Heat Pump Water Heater Ratings...

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

BRAND-------INTEGRATED-SPLIT-ADD ON

AEG----------------<1*---------NA------NA

This brand offers units that use old enameled tank technology. They are available in 220 or 300 liter sizes and are easy to install. The WPT models have electronic controls but their website is not much help and does not have a stated warranty policy. aeg-haustechnik.de

AERMEC------------<1*---------NA------NA

The SWP units are available with 300 liter storage tanks. They have advanced electronic controls but use traditional tank technology. The manufacturer's website is not much help and does not have a stated warranty policy. aermec.com

AIRCO--------------<1*---------1*------1*

These water heaters are made and sold in South Africa. They offer integrated units in four different sizes with standard technology but the warranty is not as good as other brands. They offer both "direct" and "indirect" split units where the direct units can be connected to an existing water heater. The concern with this system is that the domestic hot water could become contaminated. They also offer a "split cycle" model that provides air conditioning like a typical ductless ac unit. airco.co.za

AIRELEC------------<1*---------NA------NA

This brand is made and sold in France. The XIROS models are wall hung units that use outside air and have a capacity of 100 or 150 liters. The CYLIA model has a 300 liter capacity and a variable speed fan for quiet efficient operation. Their website is not much help and does not have a stated guarantee for their products. airelec.fr

AIRGREEN----------NA--------<1*------NA

This brand is made in China and offers six sizes of systems. Their website is not much help and does not have a stated warranty policy. airgreen.com.cn

AKL----------------<1*----------1*------NA

These water heaters are available in Europe, Asia, & South America. The E SERIES offers three sizes of integrated units with electronic controls. The N SERIES offers five sizes of split models. The manufacturers website is not much help and does not have a stated guarantee for their products. aklchina.com

ALTO--------------<1*---------<1*------NA

These units are made in China and feature durable stainless steel tanks. Their website is not much help and does not have a stated warranty policy. alto-air.com.cn

AMITIME----------<1*--------<1*-------NA

This brand is made in China. They offer three sizes of split units but their website is not much help and does not have a stated guarantee on their products. amitime.com

A.O. SMITH---------3*---------NA-------NA

The VOLTEX is an integrated unit that is available with either a 50, 66 or 80 gallon tank. The unit has four operating modes for flexibility in matching the hot water needs of the family as they change. The unit also has a user friendly LCD display that allows for control and adjustments. The brand uses basic glass-lined tank technology but is backed by a very good warranty from a leader in the hot water industry. hotwater.com

APPLIMO---------<1*----------NA-------NA

This brand is made and sold in France. The XIROS models are wall hung units that use outside air and have a capacity of 100 or 150 liters. The CYLIA model has a 300 liter capacity and a variable speed fan for quiet efficient operation. Their website is not much help and does not have a stated guarantee for their products. applimo.fr

ARISTON---------<1*----------NA-------NA

The NUOS integrated units are available in three sizes and are wall-mounted. They feature an electronic control that offers daily programming for even more energy savings. Their website is not much help and does not have a stated warranty policy. ariston.com

ASEAIR----------<1*---------<1*-------NA

These water heaters are made in China. They feature a durable stainless steel tank and electronic controls. They offer three sizes of split units but their website is not much help and does not have a stated guarantee for their products. aseair.cn

ATLANTIC--------<1*----------NA-------NA

This brand is made in France and sold internationally. The EXPLORER models have digital controls with a remote and they are programmable. The tanks use basic glass lining technology and are only available in two sizes. Their website is minimal help and the warranty depends on which country you purchase them in instead of the quality of the product. atlantic-comfort.com

AUER-------------<1*----------<1*------NA

The XIRUS models are available in two sizes and have concentric ducts for using outside air. They have programmable electronic controls and can be wall-mounted. The CYLIA model has a larger (300 liter) capacity. The units are made in France but their website does not have a stated warranty policy. auer.fr

AUSTRIA EMAIL--<1*----------NA-------NA

The WPA302 has a 300 liter capacity and is available in Europe. Their website is not much help and does not have a stated guarantee for their products. austria-email.com

AXEN------------<1*----------<1*------NA

This brand is made in China. The units feature intelligent electronic controls durable stainless steel tanks. They are available in five sizes to match the hot water needs of the home. axen-heatpump.com

BARTL------------<1*----------<1*------NA

These units are made in Germany and are sold throughout Europe. They offer two sizes of units (270 or 400 liters). The manufacturer's website is not much help and does not have a stated warranty policy. bartlwp.de

Bd----------------<1*-----------NA------NA

These water heaters are made in Taiwan and feature advanced inverter drive compressors. They are available in four sizes to match the needs of the home but their website is not much help and does not have a stated guarantee for the units. bingdian.com.tw

BERETTA--------<1*----------NA--------NA

This brand offers standard models as well as units with one or two auxiliary heat exchangers for integration of solar and conventional boilers. The units use basic enameled tank technology and are available in Europe, China, & South America. Their website does not have a stated warranty policy. berettaboilers.com

BLUEWAY--------<1*----------1*--------NA

These water heaters can be ducted and are available with either an internal or external heat exchange coil. The units are available in Australia, Europe, Middle East, South Africa, and South America but their website is not much help. The guarantee on the units is not very good when compared to other brands. blueway.hk

BOILERNOVA----<1*-----------NA------NA

This brand is made in Italy and uses basic glass-lined tank technology. They have an auxiliary coil so that they can be connected to a boiler or solar water heating system. They use electronic controls but the guarantee on the units is not very good. boilernova.it

BUDERUS--------<1*-----------NA------NA

This brand is a part of BOSCH THERMO GmBH. The LOGATHERM WPT270 can be ducted but uses basic tank technology. The manufacturer's website is not much help and does not have a stated warranty policy. buderus.de

C & H--------------NA----------<1*------NA 

This brand offers basic split heat pumps in six sizes to match the requirements of the home. Their website is not much help and does not have a stated guarantee for the units. cooperandhunter.ua

CIAT--------------<1*-----------NA------NA

The ASTEO 2 water heaters have a 270 liter tank and electronic controls. The brand is available in Europe but their website is not much help and does not have a stated warranty policy. ciat.com

CTC---------------3*-----------NA-------NA

The EcoWater units can be ducted and feature electronic controls. They use basic enameled tank technology and are available in three sizes. The refrigerant coil is located outside of the tank to prevent pollution of the water. The brand is a part of ENERTECH GROUP and they are backed by a pretty good guarantee. ctc-uk.com

DAISHIBA--------<1*---------1*--------NA

This brand offers four sizes of integrated units and three sizes of split systems. They use basic tank technology and their website is not much help. daishiba.com.cn

DE DIETRICH---<1*-----------NA-------NA

The KALIKO range of units are available in three sizes. The brand is a part of GROUP BDR THERMEA and is made in France. They use basic enameled tank technology and the warranty on the units is not very good. dedietrich-heating.com

DEER-------------NA----------<1*-------NA

These water heaters are made in China by CHINA SHINING GROUP. They are available in four sizes but their website is not much help and does not have a stated warranty policy. shuangling.cn

DIMPLEX---------<1*----------NA-------NA

This brand is part of the GLEN DIMPLEX GROUP. The BWP 30H units can be fitted with air ducts to use the outside air for heating. They feature a protective anode and a 1.5 kw backup electric element. The manufacturer's website is not much help and does not have a stated warranty policy. dimplex.de

DOMOTEC--------<1*----------3*------NA 

The NUOS water heaters are available in three sizes with the largest size (300 liters) being a split system. The condenser coil is wrapped around the outside of the water tank but the tank uses basic glass-lined technology. The guarantee on the integrated units is not very good when compared to other brands. nuosdomotec.ch

DONPER----------<1*---------<1*------NA

This brand is made in China and offers a wide selection of models. Their website is not much help and does not have a stated warranty policy. ensolar.donper.com

DUX---------------<1*----------NA------NA

The AIROHEAT units are made and sold in Australia. The brand is a part of GWA GROUP LTD. They are only available in a 250 liter size. The have automatic defrost but the guarantee is not as good as some of the other brands. dux.com.au

ECA TECHNOLOGY--<1*-------NA-------NA

This brand is made in Italy and is sold throughout Europe. The EW300S is a basic integrated model but their website is not much help and does not have a stated guarantee for their products. ecatech.it

ECO-AIR-----------<1*---------NA-------NA

The WH50GM water heaters have a fifty gallon capacity and electronic controls. They have a timer function to save even more on energy costs as well as three modes (heat pump, electric, hybrid) of operating. The warranty is not as good as other brands. northamericanhvac.com

ECOGEN-----------<1*--------4*--------NA

This brand is made in Malaysia by QUANTUM WATER HEATERS SDN BHD. They are available in two sizes and have the refrigerant coil outside of the water tank. Their website is not much help and the guarantee on teh integrated models is not very good when compared to other brands. ecogen.com.my

ELDOM--------------NA---------2*-------NA

The GREEN LINE T water heaters are made in Bulgaria and are available in either a 120 liter or 150 liter size. They feature intelligent electronic controls and have a good warranty. eldominvest.com

ELECTROLUX-------4*----------NA------NA

This brand features water heaters that are made of stainless steel for durability and style. They have all of the standard features and are backed by a very good guarantee. electroluxappliances.com

EMCAL-------------<1*----------NA------NA

These units are basic models in 200 or 300 liter sizes. They use old enameled tank technology and are made in Germany. Their website is not much help and does not have a stated warranty policy. emcal.de

EMMETI-----------<1*----------NA------NA

The ECO HOT WATER units have a durable stainless steel tank. They are available with or without a solar coil and the units can be ducted. They offer wall-mounted or floor-standing units but their website is not much help and does not have a stated guarantee for their products. emmeti.com

ENERFLOW----------NA----------NA------4*

This brand is made in South Africa by M-TECH INDUSTRIAL. They offer one size of unit (120 liters/hour) and the condenser can be installed either indoors or outdoors. enerflow.co.za

ESP--------------<1*----------NA-------NA

This brand is from EARTH SAVE PRODUCTS LTD. and is available throughout Europe. The ECOCENT models offer three sizes of units (100, 200, and 300 liters) and optional flex ducts for outside venting of the unit. The units can also provide central heating for smaller homes. The warranty is not as good as other brands. esavep.com

FAIRLAND--------<1*----------NA-------NA

These water heaters are made in China. They offer only one size (300 liters). Their website is not much help and does not have a stated guarantee for their products. fairland.com.cn

FERROLI---------<1*----------NA-------NA

The AQUA 1 water heaters are available in three sizes to match the requirements of the family size. They feature electronic controls and a coil for use with a solar water heating system. Their website is not much help and does not have a stated warranty policy. ferroli.it

FRANKE----------NA----------<1*-------NA

This brand is made and sold in South Africa. They are available in four sizes and feature durable stainless steel construction. Their website is not much help and does not have a stated guarantee for their products. franke.com

FVG ENERGY-----<1*----------NA-------NA

This brand is made in Italy and offers units with a durable stainless steel tank. They are available in three sizes and have programmable electronic controls. Their website is not much help and does not have a stated guarantee for the units. fvgenergy.com

GALMET----------<1*----------NA-------NA

This brand is made and sold in Poland. The EASYAIR BASIC 2 GT has a 200 liter capacity and a touchscreen controller. They use basic tank technology and the guarantee is not very good. galmet.com.pl

GE------------------2*----------NA-------NA

The GeoSpring is a 50 gallon system that is designed to fit in the same footprint as a traditional 50 gallon water heater. The units have smart controls so that you can change the mode to fit the changes in your needs. It is backed by an outstanding warranty but is only available in the one size. geappliances.com

GEMAKE---------<1*-----------1*-------NA

This brand offers both horizontal and vertically mounted units. They have electronic controls but use basic tank technology. Their website does not have a stated guarantee for their products. chinagemake.com

GEYSER------------NA----------NA-------2*

This brand is from Nyle Systems and offers two versions based on the type of existing water heater that you have. They are easy to install and have a good warranty on the refrigerant system. nyle.com

GOODWELL-----<1*-----------NA-------NA

These water heaters are made in China and are available in three sizes. Their website is not much help and does not have a stated guarantee for their products. goodwellonline.com

GORENJE--------<1*-----------NA-------NA

The TC models are available in two sizes (200 & 300 liter). They featured an enameled steel tank and magnesium anode which are older technology. They also offer a smaller wall mounted model in 80, 100, or 120 liter sizes. They have electronic controls but the warranty on the brand is not very good. gorenje.com

GOSAY-----------NA----------<1*-------NA

The KING HEATER units are made in China by SHANGHAI QISAI ELECTRIC INDUSTRIAL CO. Their website is not much help and does not have a stated guarantee for their products. gosayheatpump.com

HAUTEC--------<1*-----------NA--------NA

The HWBAL models are available with either a 200 or 300 liter tank. The brand is made in Germany and sold throughout Europe. Their website is not much help and does not have a stated guarantee for their products. hautec.eu

HEIM------------<1*-----------NA-------NA

This brand is made and sold in Switzerland. Their website is not much help and does not have a stated guarantee for their products. heim-ag.ch

HEKIA-----------<1*-----------NA-------NA

These water heaters are made and sold in France. They have programmable electronic controls and are available in sizes from 80 to 300 liters. The Duo model is designed to be used with a solar water heating system for added savings. The warranty is not very good when compared to other brands. hekia.fr

HELIOTHERM--<1*-----------NA--------NA

These units are made in Austria and sold throughout Europe. They offer both air and ground source units but the ground source units do not make much sense for the typical residence. The units have a backup electrical heater and a 270 liter storage tank. The manufacturer's website is not much help and does not have a stated warranty policy. heliotherm.com

HEWALEX------<1*-----------NA--------NA

This brand is made in Poland and is sold throughout Europe. The PCWU range offers two sizes (200 or 300 liters) of units that are made of durable stainless steel. Their website is not much help and does not have a stated guarantee on their products. hewalex.eu

HOVAL----------<1*-----------NA--------NA

The COMBIVAL  WPE/WPER is a basic integrated unit. Their website is not much help and does not have a stated guarantee for their units. hoval.com

HUBBELL---------1*----------NA--------NA

The PBX model is an integrated unit that is available in five sizes to meet any need. They feature a hydrostone cement tank lining that ensures a longer life and have a user friendly electronic controller. They also have a built-in heat trap device for energy savings and five modes of operation for flexibility and energy savings. The warranty on parts for the unit is not as good as some other brands. hubbellheaters.com 

IMMERGAS-----<1*-----------NA-------NA

These water heaters are made in Italy and are sold in Europe. The RAPAX 300 has a capacity of 270 liters and can be remotely controlled. They use basic enameled tank technology and their website does not have a stated guarantee for their products. immergas.com

INVENTOR-------NA----------5*--------NA

This brand offers two sizes of water heaters and features advanced inverter drive compressors. Their website is not much help but they are backed by a good warranty. inventorairconditioner.com

JOANNES--------<1*----------NA--------NA

These water heaters are sold in Italy. The JDRO 1 models are available in two sizes (200 or 300 liters) and have electronic controls. They also have a stainless steel heating coil for integrating with a solar water heating system. Their website does not have a stated guarantee for the units. joannes.it

KELVINATOR------NA-----------3*-------NA

The ECOKNIGHT water heaters are made by Electrolux and sold in Australia. They are basic units that are backed with a good guarantee and are available in two sizes. kelvinator.com.au

KIBERNETIK-----<1*----------NA-------NA

These water heaters are made and sold in Switzerland. They are available in two sizes offer basic enameled tanks as well as a stainless steel tank. Their website is not much help and does not have a stated warranty policy. kibernetik.com

KNV------------<1*-----------NA--------NA

These units are available in parts of Europe and the brand is a part of the NIBE GROUP. The AQUA 300 model is a typical air source model while the AQUA 300DX uses a geothermal loop which seems like a waste of money. The AQUA 300HT have a stainless steel tank and can be ducted. They also have a built-in heat exchanger for connection to a solar water heater or boiler. Their website is not much help and does not have a stated warranty policy. knv.at

KOLANT--------<1*----------NA--------NA 

This brand is made in China and offers a 300 liter water heater. Their website is not much help and the warranty on the tank is not very good when compared to other brands. kolant.com

LAMBORGHINI--<1*----------NA-------NA

The HYPER ONE HP is available with either a  200 or 300 liter stainless steel tank. They have electronic controls but their website does not have a stated guarantee for their products. lamborghinicalor.it

LENTHERM------<1*----------NA--------NA

These water heaters are made in Slovenia and are also sold in Serbia and Croatia. The TCC-3RZ has electronic controls and a 300 liter capacity. They use standard enameled tank technology and their website does not have a stated guarantee for the units. lentherminvest.si

LOCHINVAR------3*-----------NA--------NA

These water heaters are available in 50, 60, or 80 gallon sizes and have a built in heat trap for energy savings. The units have electronic controls with four operating modes and are backed by a good guarantee. lochinvar.com

MACRO---------<1*-----------NA--------NA

These water heaters are made in China and use basic enameled tank technology. They offer free standing or wall-hung models in a variety of sizes. Their website does not have a stated warranty policy. en.chinamacro.com

METRO THERM--<1*----------NA--------NA

This brand is a part of NIBE GROUP. The Metro Aqua series features a 285 liter storage tank but they use basic technology and the warranty is not very good. metrotherm.dk

MICOE-----------NA----------<1*--------NA

This brand is from FOUR SEASONS SONG MU GROUP and is made in China. The Tropical Home Machine is a basic split system unit. Their website is no help and does not have a stated guarantee. micoe.com

NEURA---------<1*-----------NA--------NA

The LW640 water heaters are sold in Europe. Their website is not much help and does not have a stated guarantee for their products. neura.at

NIBE------------<1*-----------NA--------NA

This brand is available in Europe and features a 285 liter capacity. They have electronic controls but their website is not much help and does not have a stated guarantee for their products. nibe.eu

OCHSNER------<1*----------<1*--------NA

This brand is available in Europe. The EUROPA MINI is a split unit while the EUROPA 323 is a unit with an integrated 300 liter tank. The EUROPA 323 also has an integrated heat exchanger for connection to a boiler or solar system. The manufacturer's website provides minimal help and does not have a stated warranty policy. ochsner.com

PECOL----------<1*----------NA-------NA  

The MINI HEAT PUMP units are available in three sizes. They are made in Malaysia by PACIFIC ENGINEERING SDN BHD and use durable stainless steel tanks but have R-22 refrigerant which is being phased out. Their website is not much help and does not have a stated guarantee for their products. pecol.com.my

QUANTUM--------<1*----------NA-------NA

These units are made and sold in Australia. The integrated models are available in five sizes to meet the requirements of different homes but the warranty is not very good. quantumenergy.com.au

RACOLD----------<1*----------3*-------NA

This brand is made in India and is a part of ARISTON THERMO GROUP. They offer units with titanium enameled tanks for durability and the condenser coil is outside the tank for more safety. The warranty on the integrated models is not very good when compared to other brands. racold.com

RELIANCE----------3*----------NA-------NA

These water heaters are available in either 50, 66, or 80 gallon sizes and feature modern touchpad controls. They have four operating modes to match the needs of your life and a powered anode rod to enhance the life of the tank. They are backed by a good warranty. reliancewaterheaters.com

RHEEM-------------5*----------NA-------NA

The PROFESSIONAL PRESTIGE series units have a 50 gallon storage capacity and smart controls. They are designed for easy installation with no major changes required to the water connections from a standard 50 gallon electric storage water heater. They have durable stainless steel backup electric heating elements and a user friendly LED control panel. The units have three modes of operation including a high demand mode which uses both the heat pump and the electric elements to ensure plenty of hot water. They don't offer a unit bigger than the 50 gallon and use basic tank technology (glass-lined) but the warranty is good. rheem.com

RICHMOND------<1*----------NA-------NA

This brand is from RHEEM MANUFACTURING and is sold through many retailers and home improvement centers. The ENCORE hybrid heat pump features smart controls and WiFi connectivity. They are available in two sizes and have three modes of operation including a high demand mode which uses both the heat pump and the electric elements to ensure plenty of hot water. They use basic tank technology (glass-lined) and their website does not have a stated warranty policy. richmondwaterheaters.com

RUUD--------------5*----------NA-------NA

This brand is from RHEEM MANUFACTURING and is sold through many retailers and home improvement centers. The PROFESSIONAL ULTRA SERIES features a 50 gallon storage capacity and smart controls. They are designed for easy installation with no major changes required to the water connections from a standard 50 gallon electric storage water heater. They have durable stainless steel backup electric heating elements and a user friendly LED control panel. The units have three modes of operation including a high demand mode which uses both the heat pump and the electric elements to ensure plenty of hot water. They don't offer a unit bigger than the 50 gallon and use basic tank technology (glass-lined) but the warranty is good. ruud.com

SINCLAIR--------<1*----------NA-------NA

These water heaters are available in Europe. They offer two sizes of units and feature a built-in heat exchanger for connecting to a solar water heater or a boiler. sinclair-eu.com

SIRAC-------------NA---------<1*-------NA

This brand is made in China and is available in two sizes (75 or 110 liter). They feature an auto on/off timer clock but the units use 50hz power and therefore are not compatible in the USA. Their website is not much help and the guarantee on the units is not very good when compared to other brands. hpsirac.com

SOFATH----------<1*----------NA-------NA

This brand is a part of BDR THERMEA. The TECO units are available with either a 200 or 270 liter tank and can be ducted to control the cooling effect. The guarantee on the units is not very good when compared to other brands. sofath.com

SOLARSTREAM-----<1*---------NA------1*

These units are made and sold in Australia and New Zealand. The ALL-IN-ONE models are available in two sizes and have durable stainless steel tanks but their guarantee is not very good when compared to other brands. The BOLT-ON model is designed to be added to virtually any existing water heater. siddonssolarstream.com

STATE---------------3*---------NA-------NA

The PREMIER units are available in 50, 66, or 80 gallon sizes. They feature a large LCD control interface and four operating modes that are selectable by pushbutton. The brand is a part of A.O. SMITH and the units are backed by a good warranty. statewaterheaters.com

STIEBEL ELTRON---3*---------NA-------NA

The ACCELERA 300 features an 80 gallon storage capacity and a unique wrap-around aluminum condenser which isolates the refrigerant piping from the potable water. The unit will provide fifty gallons of potable water before the backup electric element kicks in to handle the larger needs. The unit has a sacrificial anode system which will require periodic replacement but the water heater is backed by a very good warranty. stiebel-eltron-usa.com

SUNSYSTEM---------<1*--------NA-----NA

These water heaters are made in Bulgaria by NES LTD. and sold throughout Europe. They feature electronic controls but use basic tank technology. Their website is not much help and does not have a stated guarantee for the units. sunsystem.bg 

TERMET-------------<1*--------NA------NA

These units are made and sold in Poland. They have durable stainless steel tanks but for some reason still also have sacrificial anodes. They have a built-in stainless steel heat exchanger to allow them to be connected to various backup heating systems. They are available in three sizes but their website does not have a stated warranty policy. termet.com.pl

TERMOGAMMA-----<1*--------NA-------NA

This brand is a part of the ARISTON THERMO GROUP. The MULTIAQUA-A offers tanks in 200 or 300 liter sizes and the units can be ducted to control the cooling effect. Their website is not much help and does not have a stated warranty policy. termogamma.ch

THERMIA------------NA-------<1*-------NA

This brand is a part of DANFOSS GROUP and is sold throughout Europe. The ATRIA OPTIMUM has a variable speed circulator pump but their website is not much help and does not have a stated warranty policy. thermia.com

THERMOR----------<1*--------NA-------NA

This brand is made in France as part of ATLANTIC GROUP and is available throughout Europe. The DYNAPAC 2 models are basic integrated units while the AEROMAX PREMIUM units offer optional built-in coils for solar or boiler connection. They are available in 200 and 270 liter sizes but use basic tank technology and the warranty is not very good. thermor-heating.com

TONGYI------------<1*-------<1*-------NA

These water heaters are basic units that are available in three sizes. Their website is not much help and does not have a stated guarantee on the units. tongyiheatpump.com

TONONFORTY------<1*--------NA-------NA

The ACQUY units are made in Italy and sold throughout Europe. They have a durable stainless steel tank that has a capacity of 300 liters. Their website is not much help and does not have a stated warranty policy. tonon.it

U.S. CRAFTMASTER--3*-------NA-------NA

This brand is owned by A.O. SMITH. They offer 50 or 80 gallon water heaters using basic tank technology with a powered anode rod. They are backed by a good warranty. uscraftmaster.com

VANWARD---------<1*--------<1*------NA

These water heaters are made in china. They are available in two sizes but use basic tank technology. The guarantee on the units is not very good when compared to other brands. chinavanward.com

VENUS--------------NA---------1*-------NA

These water heaters are made and sold in India. They are available in two sizes but the manufacturer's website is not much help and their warranty is not very good. venushomeappliances.com

WESTINGHOUSE--2*----------NA----------NA

This brand name is licensed to HTP and offers models that are backed by a pretty good guarantee. The units have dip tubes which minimize the mixing & tempering of the hot water. The units are available at many home improvement stores and online.

WHIRLPOOL--------3*---------NA-------NA

This brand is available through LOWE'S HOME IMPROVEMENT WAREHOUSES in the USA. They offer both 80 gallon and 60 gallon models to suit the size of the home and family. The units have three modes of operation to ensure that there is always an adequate supply of hot water. They feature a maintenance free powered anode to make the tank last longer and they are backed by a very good warranty. whirlpoolwaterheaters.com

WOTAC------------<1*---------4*-------NA

This brand is made in China and offers either 50 or 60 HZ units. The DOMESTIC A SERIES units are integrated units that are available in 4 sizes. They feature a stainless steel tank and can be ducted for better control of the cooling effect of the unit. The manufacturer's website is not much help and does not have a stated warranty policy. wotac-e.com

YIELDHOUSE------<1*-------<1*-------NA

These heat pump water heaters are made in China and sold worldwide. The SL series features integrated units with electronic controls and are available in two sizes. The split units are available in a wide variety of sizes. Their website is not much help and does not have a stated warranty policy. yhgroup.net

YULUXUE-----------NA--------<1*-------NA

This brand is made in China and offers five sizes of tanks to match the needs of the home. Their website is not much help and does not have a stated guarantee for their products. shyuluxue.com

ZANTIA------------<1*---------NA-------NA

These units have the refrigerant heat exchanger on the outside of the hot water tank. They are available in two sizes and feature electronic controls. They use basic enameled tank technology and their website does not have a stated warranty policy. zantia.com