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The 4th Generation MRCOOL DIY 18K BTU 2-Zone Ductless Heat Pump Condenser (DIY-MULTI2-18HP230) is the latest in heat pump technology. This 2-zone condenser, when paired with select MRCOOL air handlers, is capable of producing an impressive 21 SEER 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 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 - thus saving you money!

Let the 4th Generation MRCOOL DIY 18K BTU 2-Zone Ductless Heat Pump Condenser be the solution to your home’s heating and cooling needs.

Key Features

  • Up to 21 SEER
  • 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


Product Dimensions 35.04"W x 13.46"D x 26.50"H
Product Weight 100.53 lbs
SEER2 21.2
EER2 12.5
HSPF2 9.6
EER 12.5
HSPF hspf4/hspf5 : 10.6/8.6
CFM 1764.71
Cooling Capacity 18,000 BTU
Heating Capacity 19,000 BTU
Voltage Requires a minimum of 208V-230V/60HZ/18-25A (please check your home meets this electrical requirement prior to purchase)
Phase 1
Cycle 60Hz
Min Circuit Ampacity 18A
Color White
Zone Capacity 2
Refrigerant Type R-410A
Refrigerant Volume 65.26 oz
Decibel Rating 59 dBA
Inverter Yes
Min Ambient Cool 5°F ~ 122°F
Min Ambient Heat -13°F ~ 75.2°F
Max Lineset Length 123 ft TOTAL
Liquid Line Size 1/4in
Suction Line Size 3/8in
Compressor Motor Type Twin - Rotary
Condenser Fan Motor RPM 750/600/500
Wifi Compatibility Yes
App Compatibility Yes
Compatible with IOS
Includes Remote
Warranty Limited Lifetime on the Compressor
5-year Parts on Base Parts
Installation Manual
Product Brochure
Performance Specifications
Energy Guide
AHRI Certificate


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MRCOOL DIY Multi-Zone 2-Zone 18K BTU Condenser, 4th Gen Series, DIY-MULTI2-18HP230C

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Original Price $1,859.00
Current Price $1,372.00

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