MRCOOL® DIY 4th Gen 36k BTU Ductless Mini-Split Heat Pump Complete System - 208-230V/60Hz
SKU DIY-36-HP-WM-230C25
With Incentives
Save up to $1,68818.3 SEER2 meets CEE Tier 2 (≥16). Find your state's rebate
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MrCool DIY factory warranty — register after install to activate the full coverage tiers.
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Description
MRCOOL® DIY 4th Gen 36k BTU Ductless Mini-Split Heat Pump Complete System - 208-230V/60Hz
What's in This System
The actual units this bundle ships with — pictured individually, priced as one system.
Outdoor Condenser — included
MrCool DIY 4th Gen Single-Zone 36k Condenser 230V
Sold separately for $1,700
View this unit's full specs
Indoor Air Handler — included
MRCOOL® DIY 4th Gen 36k BTU Ductless Mini-Split Air Handler 208-230V/60Hz
Sold separately for $1,188
View this unit's full specs25 ft Quick Connect® Line Set
Pre-charged copper lines — in the box, no vacuum pump needed
DIYPro® Cable
Armored communication & power cable
Wireless Remote
Handheld remote with Follow Me sensing
Key Specifications
18.3
SEER2 Rating
36000BTU
Cooling Capacity
Up to 1500sq ft
Coverage Area
208-230V
Voltage
52/45/34dBA
Noise Level
MRCOOL® DIY 4th Gen 36k BTU Ductless Mini-Split Heat Pump Complete System - 208-230V/60Hz — Model Details
What this specific model is sized for, how it installs, how it performs, and what it costs to run.
Room & Space Coverage — 36,000 BTU
The MRCOOL® DIY 4th Gen 36k BTU Ductless Mini-Split Heat Pump Complete System - 208-230V/60Hz delivers 36,000 BTU of cooling and heating capacity (3-ton class), sized for spaces up to 1,500 sq ft in standard 8-ft ceiling rooms with average insulation. At this capacity the unit is typically used for open-plan main floors, large garages, pole barns, finished basements, and small commercial bays. For homes with vaulted ceilings, heavy sun exposure, or poor insulation, plan on ~20% more BTU per square foot than the nominal coverage.
Efficiency & Operating Cost
This unit is rated at 18.3 SEER2 and 8.7 EER2 at full load. SEER2 measures seasonal cooling efficiency — higher is better — and 18.3 meets modern federal minimum standards with headroom for utility rebates in most states. For heating performance it carries a 8 HSPF2 rating, which translates to roughly 250–300% heating efficiency versus resistance electric — one kilowatt-hour of electricity moves three kWh of heat into the space at mild outdoor temperatures. Running the unit 8 hours a day at full load draws roughly 472 kWh/month — about $76/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 575°F ambient, best paired with a supplemental heat source in cold climates. 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 28A with a maximum overcurrent protection of 35A. Wire the outdoor unit with 8 AWG copper on a dedicated 35A 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 E STAR 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 75ft; 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
Operating sound level ranges from 34 dB(A) on low to 52 dB(A) on high — the low end is whisper-quiet, below a normal conversation (60 dB) and comparable to a library reading room. Quiet mode caps fan speed and compressor rpm for an extra 2–3 dB drop in sound output.
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. AHRI certified and UL/ETL listed for North American electrical safety — required for most utility rebate and tax credit programs.
What's in the Box & Compatibility
Ships as a Mini-Split with remote control included.
Product Details
The MRCOOL® 4th Generation DIY 36K BTU, 18 SEER Ductless Heat Pump is one of the most powerful single-zone systems offered in the DIY Series. This complete system has the heating and cooling performance to cover an area up to 1500 sq. ft while still being able to achieve an 18 SEER efficiency rating. All of this performance is within a system that can be easily installed by a homeowner with a few hand tools thanks to the patented MrCool Pre-Charged Quick-Connect Line Set that makes connecting refrigerant piping as simple as turning a few wrenches. The benefits of this system are not limited to the performance and ease of installation. This system also has many operational functions and features that sets it apart. The user can select from up to six operation modes AUTO, HEAT, COOL, FAN-ONLY, DRY (dehumidification), and SLEEP. This system features a Follow Me function which can constantly adjust the temperature of the room by sensing the temperature from the location of the handheld remote controller. This system can also be operated with an Apple or Android smartphone by downloading the Smart HVAC app. MrCool offers a limited lifetime compressor warranty on this system.
Specifications
| Cooling Capacity | 36,000 BTU |
| Heating Capacity | 36,000 BTU |
| SEER2 Rating | 18.3 |
| HSPF2 | 8 |
| Voltage | 208-230 V |
| Refrigerant | R-410A |
| Noise Level | 52/45/34 dBA |
| Coverage Area | Up to 1500 sq ft |
| Zone Capacity | 1 zones |
| Max Line Set | 75 ft |
| SEER Rating | 18 |
| EER2 | 8.7 |
| Tonnage | 3 Ton |
| Airflow | 673.53/502.94/367.65 CFM |
| Phase | 1 |
| Refrigerant Type | R-410A |
| Refrigerant Charge | 111.1 oz |
| Liquid Line Size | 3/8 |
| Suction Line Size | 5/8 |
Features
- Up to 18.3 SEER2
- Gold Fin® condenser: corrosion-resistant coastal living - don't worry, our condenser is built to resist long term corrosion
- Variable-speed DC inverter compressor technology cuts operating costs
- R-410A environmentally friendly refrigerant
- Standard 7-year compressor/5-year parts warranty; register for limited lifetime compressor warranty
Frequently Asked Questions
Everything you need to know about this product
What size room will the MRCOOL® DIY 4th Gen 36k BTU Ductless Mini-Split Heat Pump Complete System - 208-230V/60Hz 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?
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 36k BTU Ductless Mini-Split Heat Pump Complete System - 208-230V/60Hz?
How long does shipping take?
What size room does 36,000 BTU cover?
What is the efficiency rating?
Do you offer returns?
How can I pay?
Related Products
Ships Nationwide — Shop by State
We deliver the MRCOOL® DIY 4th Gen 36k BTU Ductless Mini-Split Heat Pump Complete System - 208-230V/60Hz to all 50 states via FedEx, UPS, and truck freight. Each state page lists local rebate programs and utility incentives.