MRCOOL Universal Series 36K BTU, 3 Ton, 18 SEER2, DC Inverter Heat Pump Condenser - UHP18036-O
The MRCOOL® Universal® Series 36K DC Inverter Heat Pump Condenser is designed to deliver dependable, high-efficiency heating and cooling—even in the most extreme weather conditions. Whether you're facing sweltering summer heat or freezing winter temperatures, this unit ensures steady, year-round comfort. With an impressive 18 SEER2 efficiency rating, it offers substantial energy savings without compromising performance, making it an ideal replacement for outdated, energy-hungry systems.
Engineered for flexibility and convenience, the 36K Universal® condenser features a compact footprint that allows for installation in space-constrained areas. Its smaller size makes it an excellent fit for homes with limited outdoor clearance while still delivering powerful, whole-home comfort. Installation is quick and hassle-free—especially when paired with the optional MRCOOL® NO-VAC® Quick Connect® line set (sold separately). This innovative, pre-charged line set eliminates the need for traditional vacuuming, flaring, or refrigerant handling, reducing installation time, labor costs, and complexity. At the heart of the system is advanced DC inverter technology, which allows the compressor to continuously modulate output based on your home’s real-time temperature demands. Unlike traditional systems that cycle on and off, this inverter-driven condenser maintains more consistent temperatures, reduces power consumption, minimizes component wear, and keeps noise levels to a minimum. Whether you're upgrading an aging system or installing a new HVAC solution, the MRCOOL® Universal® Series 36K Heat Pump Condenser offers a winning combination of efficiency, performance, and quiet operation. To ensure long-lasting confidence, it’s backed by a 10-year parts warranty and a 2-year limited labor warranty.
Specifications
| Net Dimensions (In) |
16.34 D x 38.39 H x38.58 W |
| Net Weight (Lbs) |
204.15 |
| SEER2 |
Up to 18 |
| EER2 |
Up to 12 |
| HSPF2-4 |
10 |
| HSPF2-5 |
8.2 |
| Tonnage |
3 |
| Cooling Capacity (Btu) |
36000 |
| Heating Capacity (Btu) |
37000 |
| Voltage (V) |
208/230 |
| Phase |
1 |
| Cycle |
60 |
| Max Fuse Breaker (A) |
30 |
| Min Circuit Ampacity (A) |
29 |
| Color |
Dark Grey |
| Refrigerant Type |
R-454B |
| Refrigerant Volume (Oz) |
126.99 |
| Decibel Rating (Dba) |
63 |
| Inverter |
DC |
| Max Lineset Length (Ft) |
246 |
| Liquid Line Size |
8-Mar |
| Suction Line Size |
4-Mar |
| Compressor Motor Type |
Twin-Rotary |
| Condenser Fan Motor RPM |
800/750/650 |
| Metering Device |
EXV |
| UL Listed |
Yes |
| CSA Listed |
Yes |
| ETL Listed |
Yes |
| Base Warranty |
10 Year Parts |
| Base Parts Warranty |
10 Years |
| Base Labor Warranty |
2 Year |
| Contains Electronics |
Yes |
| Contains Chemicals |
Yes |
| Contains Compressed Gas |
Yes |
| Proposition 65 Warning |
Yes |
What our Experts Think
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Balanced Capacity – 36,000 BTU (3 Ton) output is ideal for medium-to-large homes needing reliable year-round comfort.
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High Efficiency – 18 SEER2 rating maximizes energy savings while maintaining consistent performance.
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DC Inverter Technology – Provides quieter operation, precise temperature control, and extended system life.
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Dual Function – Heat pump delivers efficient cooling in summer and dependable heating in winter.
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Universal Design – Engineered for seamless pairing with MRCOOL Universal air handlers and ducted systems.
Q&A
Q: What type of system is this?
A: A 36,000 BTU (3 ton) DC inverter heat pump condenser, built for central ducted HVAC systems.
Q: How energy efficient is it?
A: It has a strong 18 SEER2 rating, offering premium efficiency to lower utility bills.
Q: Does it provide both cooling and heating?
A: Yes, as a heat pump system, it delivers reliable cooling in summer and heating in winter.
Q: What makes it “Universal”?
A: Its flexible compatibility allows pairing with multiple MRCOOL Universal air handlers, making installation simpler.
Q: What home size does it support?
A: Ideal for homes between 1,500–2,000 sq. ft., depending on climate and insulation.
Maintenance Tips
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Clean or replace air filters every 1–3 months.
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Keep outdoor condenser coils clear of dirt and debris.
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Inspect refrigerant lines and insulation for damage.
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Check condensate drain regularly to avoid blockages.
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Schedule yearly professional service to maintain 18 SEER2 efficiency.
