MRCOOL Signature 36K BTU 3 Ton 14.3 SEER2 Heat Pump Condenser and Multi-Position Air Handler (M36C21AA4T3621HT)

MRCOOL Signature 36K BTU 3 Ton 14.3 SEER2 Heat Pump Condenser and Multi-Position Air Handler (M36C21AA4T3621HT)

SKU: M36C21AA4T3621HT

Sale price$3,158.40 Regular price$3,999.90



Electric Heat Kit (Optional):


Out of Stock Estimated restock: 2-4 Weeks
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Package Overview

Upgrade to dependable year-round comfort with the MRCOOL® Signature Series 36k Bundle. This system combines a flexible multi-position air handler with a high-efficiency heat pump condenser, both enhanced with eco-friendly R-454B refrigerant. Compact, durable, and quiet, it’s the ideal solution for efficient heating and cooling in modern homes.

Key Features:

  • Up to 14.3 SEER2 efficiency ratings
  • Eco-friendly R-454B refrigerant for reduced environmental impact
  • Multi-position air handler: upflow, downflow, or horizontal
  • Quiet operation at approx. 60 dB with sound-dampening design
  • Durable copper coils with aluminum fins for reliable heat transfer
  • Backed by 10-year parts & limited lifetime compressor warranty

Package Includes:

Description
Product Specs
Manuals & Guides

The MRCOOL® Signature Series 36k Heat Pump Condenser is a dependable, high-efficiency solution designed to provide reliable year-round comfort. With energy performance ratings of 14.3 SEER2 and 11.7 EER2, it delivers consistent heating and cooling while helping reduce energy consumption and utility bills. Whether battling summer heat or winter cold, this unit ensures your home stays comfortable in every season.

Factory pre-charged with R-454B refrigerant, this system supports eco-conscious upgrades, while the pre-charged design simplifies installation to save you on time and labor costs. At its core, a single-speed scroll compressor provides dependable operation. Inner-groove copper tubing improves heat transfer, enhancing system responsiveness and efficiency. Built-in temperature and pressure sensors monitor conditions to help prevent system strain, while an intelligent defrost function ensures continued performance in colder climates.

Despite its large capacity, the unit operates quietly, just 63 decibels, thanks to a precision-engineered sound-dampening top that minimizes noise without compromising airflow. It’s an ideal solution for noise-sensitive environments. Durability is built in with a steel louver coil guard and wire fan discharge grille designed to provide added protection for internal components and extend the longevity of the unit. Installation and maintenance are hassle-free with features like sweat connection service valves and an accessible gauge port.

Backed by a 10-year limited parts warranty and a limited lifetime compressor warranty, the MRCOOL® Signature Series 36k Heat Pump Condenser offers reliable comfort and long-term value.

Net Dimensions (In) 29.14 D x 25 H x 29.14 W
Net Weight (Lbs) 173
Works With Signature Series Multi-Position or Stud Mount Air Handlers
SEER2 14.3
EER2 11.7
HSPF2 7.5
CFM 2750
Tonnage 3
Cooling Capacity (Btu) 33000
Heating Capacity (Btu) 33000
Voltage (V) 208/230
Phase 1
Cycle 60
Max Fuse Breaker (A) 30
Min Circuit Ampacity (A) 22.2
Color Grey
Refrigerant Type R-454B
Refrigerant Volume (Oz) 102.3
Decibel Rating (Dba) 63
Inverter No
Min Ambient Cool (F) 59
Min Ambient Heat (F) 5
Max Lineset Length (Ft) 150
Liquid Line Size 3/8
Suction Line Size 3/4
Compressor Motor Type Scroll
Condenser Fan Motor Type PSC
Condenser Fan Motor Hp 1/7
UL Listed Yes
CSA Listed Yes
ETL Listed Yes
Energy Star Certified No
AHRI Certified Yes
Base Warranty 10 Year Parts, Limited Lifetime Compressor Warranty
Base Parts Warranty 10 Year
Base Compressor Warranty Limited Lifetime
Contains Electronics Yes
Contains Chemicals Yes
Contains Compressed Gas Yes
Proposition 65 Warning Yes
Gross Depth (In) 30.3
Gross Height (In) 26.2
Gross Width (In) 30.3
Gross Weight (Lbs) 182
Description
Product Specs
Manuals & Guides

The MRCOOL® Signature Series 36k Multi-Position Air Handler delivers dependable, energy-efficient comfort in any season. With the addition of environmentally friendly R-454B refrigerant, this system supports cleaner standards while helping to lower energy costs and reduce your home's carbon footprint. Designed for flexibility and space efficiency, the unit can be installed in upflow, downflow, or horizontal positions, making it an ideal choice to accommodate a wide variety of residential layouts. Its compact, modern design allows it to fit easily into tight areas like attics, closets, or crawl spaces without sacrificing performance. When paired with a compatible heat pump or condenser, it provides powerful, year-round heating and cooling.

The air handler features a durable galvanized steel cabinet, a high-efficiency ECM blower motor, and copper “A” coils with enhanced aluminum fins for optimized heat transfer and humidity control. Internal thermal insulation minimizes energy loss and condensation, improving both comfort and efficiency. Installation is straightforward and designed to reduce labor time and complexity. A built in air filter rack makes maintenance quick and convenient, while an optional electric heat kit enhances performance in colder climates.

For smart home convenience, this unit works seamlessly with most third-party thermostats, giving you the freedom to choose how you control your comfort without being locked into a specific brand. Backed by a 10-year limited parts warranty, the MRCOOL® Signature Series 36k Multi-Position Air Handler offers lasting performance, efficient operation, and flexible installation for total home comfort.

Net Dimensions (In) 22 D x 45.75 H x 19.625 W
Net Weight (Lbs) 129
Works With Signature Series Top Discharge Condensers
CFM 1131
Tonnage 3
Voltage (V) 208/230
Phase 1
Cycle 60
Max Fuse Breaker (A) 6
Min Circuit Ampacity (A) 4.5
Mount Type Multi-Position
Color Grey
Refrigerant Type R-454B
Decibel Rating (Dba) 55
Air Flow Direction Multi-Position
Drain Connection Size 3/4
Liquid Line Size 3/8
Suction Line Size 3/4
Blower Motor Type ECM
Blower Motor Hp 45659
Blower Motor Speeds 5
Blower Motor Rpm 1000
Filter Type Replaceable
Filter Size 18 * 21 * 1
Metering Device Orifice
Auxiliary Heater Included No
Auxiliary Heater Available Yes
Auxiliary Heater Sizes 5kW, 7.5kW, 10kW
UL Listed Yes
CSA Listed Yes
ETL Listed Yes
Energy Star Certified No
AHRI Certified Yes
Base Warranty 10 Year Parts, Limited Lifetime Compressor Warranty
Base Parts Warranty 10 Year
Base Compressor Warranty Limited Lifetime
Contains Electronics Yes
Contains Chemicals Yes
Contains Compressed Gas Yes
Proposition 65 Warning Yes
Gross Depth (In) 25.6
Gross Height (In) 47.625
Gross Width (In) 22.83
Gross Weight (Lbs) 142

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