VersaPro 3.5 Ton Packaged Heat Pump – R-454B – Horizontal

The MRCOOL® VersaPro® Series 42K Package Heat Pump is built to handle demanding, year-round climate control in one compact system. With strong summer cooling and dependable winter heating, it delivers a balance of efficiency, durability, and quiet performance—ideal for homeowners looking to upgrade from an older HVAC setup.

Rated at 13.4 SEER2, the VersaPro® 42K helps reduce energy use and monthly utility costs. It uses R-454B refrigerant, a next-generation, low-GWP option that supports environmentally responsible upgrades while still delivering excellent heating and cooling performance.

The power-painted galvanized steel cabinet protects the unit from weather, rust, and long-term wear. Its horizontal discharge design keeps sound levels low—perfect for tight residential spaces or areas where noise is a concern. Inside the cabinet, aluminum tubing and fin coils improve heat transfer and offer superior corrosion resistance compared to copper, reducing maintenance needs and extending the system’s lifespan.

A high-efficiency full series compressor works with a PSC blower motor to maintain consistent airflow, steady temperatures, and dependable operation. Built-in safety protections monitor pressure levels and coil temperatures to keep the system running reliably.

When registered, the unit is backed by a 10-year limited parts warranty and a 10-year compressor warranty. The MRCOOL® VersaPro® 42K is a strong, long-lasting choice for homeowners wanting efficient comfort and dependable performance season after season.

• SEER2: 13.4

• EER2: 11.2

• HSPF2-4: 6.7

• CFM: 1430

• Tonnage: 3.5

• Voltage (V): 230

• Max Fuse Breaker (A): 40

• Min Circuit Ampacity (A): 29.9

• Color: Grey

• Rated Load: 19.9

• Full Load: 96

• Refrigerant Type: R-454B

• Decibel Rating (dBA): 80

• Inverter: No

• Drain Connection Size: 3/4"

• Control Type: 24V Thermostat

• Compressor Motor Type: Scroll

• Condenser Fan Motor Type: ECM

• Condenser Fan Motor HP: 1/3

• Blower Motor Type: PSC

• Blower Motor HP: 1/4

• Blower Motor Speeds: 3

• Metering Device: Piston

• Auxiliary Heater Included: No

• Auxiliary Heater Available: Yes

• Auxiliary Heater Sizes: 5 kW / 7.5 kW / 10 kW / 15 kW / 20 kW

• Registered Warranty: 10 Year Parts, 10 Year Compressor

• Base Warranty: 5 Year Parts, 5 Year Compressor

• Registered Parts Warranty: 10 Year Parts

• Base Parts Warranty: 5 Year Parts

• Registered Compressor Warranty: 10 Year Compressor

• Base Compressor Warranty: 5 Year Compressor

• Net Depth (in): 58.5

• Net Height (in): 33.06

• Net Width (in): 42.06

• Net Weight (lbs): 454

• Gross Depth (in): 59.25

• Gross Height (in): 34.07

• Gross Width (in): 42.24

• Gross Weight (lbs): 472

─────────────────────────────────────────────────────────────

Compatibility

5 kw Heat Kit for VersaPro Package Heat Pump

7 kw Heat Kit for VersaPro Package Heat Pump

10 kw Heat Kit for VersaPro Package Heat Pump

15 kw Heat Kit for VersaPro Package Heat Pump

20 kw Heat Kit for VersaPro Package Heat Pump

MST04  Smart Thermostat

Disclaimer:

The compatibility information provided in this article is specific to units within the same series. While additional compatibility with other series and units may exist, it is not detailed here. For further assistance or confirmation of compatibility with other systems, please contact MRCOOL support.

─────────────────────────────────────────────────────────────