Mr. Cool DIY UHP1836AH36-O 36,000 BTU 18 SEER2 Universal Multi Position Air Handler Heat Pump System - R454B

MRCOOL® UHP1836AH36-O Universal® 5th Gen 36,000 BTU R-454B Central Heat Pump Split System (Multi-Position Air Handler + Inverter Condenser)

The MRCOOL® UHP1836AH36-O Universal® 5th Gen 36,000 BTU Central Heat Pump System is a high-efficiency ducted heating and cooling solution engineered to provide dependable, year-round comfort for residential applications. Combining a 3-ton inverter-driven outdoor heat pump condenser with a multi-position indoor air handler , this system delivers precise temperature control, quiet operation, and exceptional energy savings. Utilizing environmentally friendly R-454B refrigerant , it significantly reduces Global Warming Potential (GWP) compared to previous-generation refrigerants while maintaining excellent heating and cooling performance.

Designed for maximum installation flexibility, the Universal® air handler supports upflow, downflow, and horizontal configurations , making it ideal for closets, basements, attics, crawl spaces, and utility rooms. A durable 100% aluminum M-shaped evaporator coil maximizes heat transfer while resisting corrosion for long-lasting reliability. The system is compatible with MRCOOL® No-Vac® Quick Connect® line sets (sold separately) as well as traditional field-installed refrigerant piping, providing installers with greater flexibility. Optional electric heat kits are available for auxiliary and emergency heat in colder climates.

Rated up to 18.6 SEER2 , the Universal® Series delivers outstanding energy efficiency while the variable-speed inverter compressor continuously adjusts output to match heating and cooling demands. The air handler utilizes a four-speed ECM blower motor for enhanced airflow, improved humidity control, and whisper-quiet operation. MRCOOL® backs the system with a 10-year parts warranty and a 2-year limited labor warranty when registered, providing long-term confidence and peace of mind.

General Information

System Type: Central ducted inverter heat pump split system (multi-position air handler + outdoor condenser)
System Model: UHP1836AH36-O
Indoor Model: Universal® 5th Gen 36,000 BTU Multi-Position Air Handler
Outdoor Model: Universal® 5th Gen 36,000 BTU Inverter Heat Pump Condenser
Capacity: 36,000 BTU Cooling / Heating (3 Ton)
System Application: Whole-home ducted heating & cooling
Operating Modes: Heating & Cooling
Refrigerant: R-454B (low GWP refrigerant)
Voltage: 208/230V, 1 Phase, 60Hz

Key Features

• High-efficiency inverter-driven heat pump system

• Eco-friendly R-454B refrigerant with reduced Global Warming Potential

• Up to 18.6 SEER2 energy efficiency

• Multi-position air handler supports upflow, downflow, and horizontal installation

• Variable-speed inverter compressor for maximum comfort and efficiency

• Four-speed ECM blower motor

• Durable 100% aluminum M-shaped evaporator coil

• Compatible with MRCOOL® No-Vac® Quick Connect® line sets (sold separately)

• Compatible with traditional field-installed refrigerant piping

• Quiet indoor and outdoor operation

• Optional electric heat kits available for auxiliary and emergency heat

• Replaceable 12 x 20 x 1 air filter

• Maximum line set length up to 164 ft.

• Designed for closets, attics, basements, crawl spaces, and utility rooms

• AHRI certified performance

• 10-year parts warranty (with registration)

• 2-year limited labor warranty (with registration)

Specifications (Rated Conditions)

Cooling Capacity: 36,000 BTU (3 Ton)
Heating Capacity: 36,000 BTU
SEER2: Up to 18.6
Voltage: 208/230V, 1 Phase, 60Hz
Refrigerant: R-454B
Installation: Upflow, Downflow, Horizontal
Blower Speeds: 4
Maximum Line Set Length: 164 ft.
Liquid Line Size: 3/8 in.
Suction Line Size: 3/4 in.

Included Components

• Universal® 36,000 BTU multi-position air handler

• Universal® 36,000 BTU inverter heat pump condenser

• Installation documentation

Line set, thermostat, and auxiliary heat kit sold separately.

Ideal For

Homeowners replacing or upgrading a traditional central HVAC system with a high-efficiency inverter heat pump. The MRCOOL® Universal® 5th Gen 36,000 BTU System is ideal for homes with existing ductwork seeking lower utility costs, quiet operation, flexible installation options, and reliable year-round heating and cooling using environmentally friendly R-454B refrigerant.