MRCOOL® DIY 4th Gen Multi-Zone 3-Zone Condenser
Component — Not a Complete System
This is the outdoor unit only. To run, you also need a matching indoor air handler and a refrigerant line set. Looking for the complete system instead? Browse complete 27,000 BTU systems.
SKU DIY-MULTI3-27HP230C
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Save up to $1,02022 SEER2 meets CEE Tier 2 (≥16). Find your state's rebate
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Description
MRCOOL® DIY 4th Gen Multi-Zone 3-Zone Condenser
What's in the Box
Here's what you'll receive with your order
MRCOOL® DIY 4th Gen Multi-Zone 3-Zone Condenser
As described
Key Specifications
22
SEER2 Rating
27000BTU
Cooling Capacity
208-230V
Voltage
61dBA
Noise Level
Up to 3
Zone Capacity
MRCOOL® DIY 4th Gen Multi-Zone 3-Zone Condenser — Model Details
What this specific model is sized for, how it installs, how it performs, and what it costs to run.
Room & Space Coverage — 27,000 BTU
The MRCOOL® DIY 4th Gen Multi-Zone 3-Zone Condenser delivers 27,000 BTU of cooling and heating capacity, sized for spaces up to 1,500 sq ft in standard 8-ft ceiling rooms with average insulation. At this capacity the unit handles medium primary rooms, master suites with attached bath, converted garages, and workshops. If your space includes a sunny west-facing wall or a finished bonus room above it, lean toward the upper end of the coverage range. As a multi-zone system this condenser supports up to 3 independent indoor heads, each with its own thermostat and mode — so bedrooms can cool while the living room heats, on one outdoor unit.
Efficiency & Operating Cost
This unit is rated at 22 SEER2 and 12 EER2 at full load. SEER2 measures seasonal cooling efficiency — higher is better — and 22 puts this in the premium efficiency tier. Running the unit 8 hours a day at full load draws roughly 295 kWh/month — about $47/month at the US average $0.16/kWh residential rate. Real-world draw is usually 30–50% lower because inverter compressors modulate down most of the time.
Cold & Hot Weather Operating Range
This system produces rated heating capacity down to -1375.2°F ambient, putting it in hyper-heat territory suitable for northern climates where ducted gas is the usual backup. On the cooling side the compressor runs down to 5122°F outdoor ambient, useful for server rooms, grow rooms, and any space that needs year-round cooling. The inverter-driven compressor modulates between roughly 30% and 110% of rated capacity instead of cycling on/off, which both extends runtime at extreme temperatures and holds tighter setpoints (±0.5°F) versus ±2–3°F on fixed-speed units.
Power & Electrical Requirements
Power requirement: 208-230V 1-phase 60Hz (standard US residential 240V service). Minimum circuit ampacity is 26A with a maximum overcurrent protection of 40A. Wire the outdoor unit with 8 AWG copper on a dedicated 40A double-pole breaker (or single-pole at 120V), with a disconnect within sight of the condenser per NEC 440.14.
Install Difficulty — DIY-Friendly
This DIY 4th Gen Multi-Zone system ships with a pre-charged Quick Connect line set — no HVAC license, no vacuum pump, no refrigerant gauges. The pre-charged fittings use a hand-tightened mechanical seal that a homeowner completes in 15 minutes per connection. Typical install time from unboxing to first cool air is 4–8 hours for a single-head system. The system supports line set lengths up to 172ft; longer runs are available as accessory kits. Plan the shortest practical route — every 10ft of line set adds roughly 2% capacity loss. Ships with R-410A refrigerant. R-410A is a mature, widely-serviced refrigerant; service technicians and parts are available at any HVAC supply house.
Sound Level & Comfort Features
Rated sound output is 61 dB(A) at full operation.
Warranty & Certifications
When you register your unit within 60 days of purchase you get Limited Lifetime Compressor on the compressor through MrCool's registered warranty program. Unregistered coverage drops to 5-year Parts / 7-year Compressor — registration takes 3 minutes at mrcool.com and is the highest-ROI post-purchase step you can take.
What's in the Box & Compatibility
Ships as a Mini-Split.
Product Details
Introducing the 4th Generation MRCOOL® DIY 27K BTU 3-Zone Ductless Heat Pump Condenser which is one of the most capable heat pumps on the market. When this 3-zone condenser is matched with select MrCool air handlers, it can produce a highly effective 22 SEER efficiency rating. It can also provide heating performance all the way down to -13°F. With its Gold Fin condenser coating, it is sure to withstand the seasons. To drive home the quality of this condenser, MrCool is the only manufacturer to offer a limited lifetime compressor warranty. The cornerstone of this heat pump is its ability to be a Do-It-Yourself project for a homeowner. When used with MrCool’s patented Pre-Charged Quick Connect Line Set, the refrigerant piping can be connected with simple hand tools and does not require the services of a certified technician. It comes pre-charged with the correct amount of R-410A refrigerant so, once installed, it does not require vacuuming. Allow the capability, performance, and simplicity of a DIY installation of the 4th Generation MrCool DIY 27K BTU 3-Zone Ductless Heat Pump Condenser to be your only choice for your home’s heating and cooling.
Specifications
| Cooling Capacity | 27,000 BTU |
| Heating Capacity | 27,000 BTU |
| SEER2 Rating | 22 |
| Voltage | 208-230 V |
| Refrigerant | R-410A |
| Noise Level | 61 dBA |
| Zone Capacity | Up to 3 zones |
| Max Line Set | 172 TOTAL ft |
| SEER Rating | 22 |
| EER2 | 12 |
| Airflow | 2129.41 CFM |
| Phase | 1 |
| Refrigerant Type | R-410A |
| Refrigerant Charge | 91.71 oz |
| Liquid Line Size | 1/4 |
| Suction Line Size | 1/2 |
Features
- Up to 22 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
- Line sizes 1/4”, 1/2” & 3/8”, 5/8”
Frequently Asked Questions
Everything you need to know about this product
What size room will the MRCOOL® DIY 4th Gen Multi-Zone 3-Zone Condenser cool?
Can I install this myself without an HVAC license?
Is this unit eligible for the federal 25C tax credit?
How cold can it get outside before this heat pump stops heating?
What electrical circuit do I need for installation?
Can I add more indoor units later on this condenser?
How fast does HVACZAR ship this unit?
What if it arrives damaged or I change my mind?
What is the warranty on the MRCOOL® DIY 4th Gen Multi-Zone 3-Zone Condenser?
How long does shipping take?
What size room does 27,000 BTU cover?
What is the efficiency rating?
Do you offer returns?
How can I pay?
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Ships Nationwide — Shop by State
We deliver the MRCOOL® DIY 4th Gen Multi-Zone 3-Zone Condenser to all 50 states via FedEx, UPS, and truck freight. Each state page lists local rebate programs and utility incentives.