Ductless AC Ratings part 15, Reviews of the Defy, Demir Dokum, Denka, DiamondAir, and Direct Air brands



These heat pumps are made and sold in South Africa and the brand is a part of the ARCELIK GROUP. The units have antibacterial filters for improved indoor air quality and the outdoor units have an anti-corrosion finish but the guarantee on the compressor (the heart of the unit) is not very good when compared to other brands.

DEMIR DOKUM--<1*----<1*----------<1* 

This brand is made in Turkey and is a part of the VAILLANT GROUP. They offer basic units that are available with either R-22 or R-410a refrigerant. They offer options such as an I FEEL function, vitamin c filter, ionizer, and HEPA filter. The premium units have three stage air filters for enhanced air quality. Their website is not much help and does not have a stated warranty policy.


These units are made in China and are available in the Middle East. They feature basic units in cooling only or heat/cool models. They offer models with tropical compressors and coated coils for corrosion protection but the manufacturer's website is not much help and does not have a stated warranty policy. 


This brand is manufactured for sale on the internet and the units are relatively inexpensive. They offer basic heat pumps with a 13 seer efficiency as well as 20 seer inverter models. The units have"gold fin" coil coating to minimize corrosion as well as a refrigerant leakage detection system. The cold catalyst filter can help to improve the home's indoor air quality and the temperature sensing remote can improve the comfort level. 

DIRECT AIR-----2*-------2*-----------3*  

The MS11D units are basic 15 SEER heat pumps while the MSVI models are 20 SEER premium units. The MS11M models have a 24 SEER efficiency and can serve up to four indoor units from a single outdoor unit. The HEATEXTREM models offers heat pumps that will continue to provide heating even down to outdoor temperatures of -35 C. The brand is backed by a good warranty but they are only available through dealers in Canada. 

Other Ductless AC Brand Ratings

You can continue to browse our alphabetical list of manufacturers but, if you are looking for a specific brand, you can enter its name in the search box at the top of the page.