DIY 4th Gen Up to 4-Zone 36k BTU Up to 21.5 SEER2 System (12k-12k-24k)



The 4th Generation MRCOOL® DIY 36K BTU 3-Zone Ductless Heat Pump Condenser is the latest in heat pump technology. This 3-zone condenser, when paired with select MrCool air handlers, is capable of producing an impressive 21.5 SEER2 efficiency rating. It also has the ability to heat even when temperatures drop to -13°F. It features robust construction which includes a Gold Fin Condenser coating so it is sure to withstand exposure to the elements. For added peace of mind, this is the only condenser on the market that comes with a limited lifetime compressor warranty. As a MrCool DIY product, this heat pump is designed specifically to be used with MrCool’s patented Pre-Charged Quick Connect Line Sets. These line sets come pre-charged with the precise amount of R-410A refrigerant. They are also equipped with quick connectors, so the line set can be connected to the condenser by the homeowner using only wrenches. This means the installation process can be performed without retaining the services of a certified technician. Let the 4th Generation MrCool DIY 36K BTU 3-Zone Ductless Heat Pump Condenser be the solution to your home’s heating and cooling needs.


  • Does not include Line Sets / Install Kits - Be sure to select Line Sets / Install Kits above
  • Up to 21.5 SEER2
  • Gold Fin® condenser: corrosion resistant - live on the coast? Don't worry, our condenser is built to resist long term corrosion
  • Energy Efficient DC Inverter
  • R-410A environmentally friendly refrigerant
  • Standard 7-year compressor/5-year parts warranty; register for limited lifetime compressor warranty
  • Line sizes 1/4”, 1/2” & 3/8”, 5/8”

DIY 4th Gen Up to 4-Zone 36k BTU Up to 21.5 SEER2 System (12k-12k-24k)