Description
The MRCOOL VersaPro MPG42S090MO13C is a 3.5-ton (42,000 BTU) gas/electric package unit that combines R-454B air conditioning rated at 13.4 SEER2 / 11 EER2 with a 90,000 BTU, 81% AFUE natural gas furnace in one outdoor cabinet. Everything is factory assembled and charged, so a single unit on a pad or roof handles both cooling and heating for homes and light commercial spaces. The multi-position cabinet connects to horizontal or downflow duct runs, and an LP conversion kit is included for propane installations.
The MRCOOL® VersaPro® Series 42K 90,000 BTU Gas Package Unit is an all-in-one heating and cooling system designed to provide consistent, year-round comfort. It combines a 13.4 SEER2 high-efficiency air conditioner with an 81% AFUE gas furnace, delivering reliable cooling during hot summer months and dependable warmth during the coldest winters. This hybrid design offers an effective upgrade that improves comfort while helping lower monthly energy costs.
The unit uses R-454B refrigerant, a next-generation formula with a much lower global warming potential than older refrigerants. This provides a more environmentally responsible solution without sacrificing performance. Built for long-term durability, the power-painted galvanized steel cabinet protects against rust, weather damage, and wear, while the horizontal discharge configuration keeps operation quiet.
Inside, aluminum tubing with microchannel coils maximizes heat transfer efficiency and provides superior corrosion resistance compared to copper, reducing maintenance needs over time. High-efficiency compressors paired with an ECM blower motor ensure smooth, quiet, and consistent airflow. Integrated safety controls monitor high/low pressure and coil temperatures, helping maintain reliable operation even under demanding conditions.
For installation flexibility, the VersaPro® 42K supports horizontal and downflow configurations and features a compact footprint for tight spaces. An LP conversion kit is included for propane use, and a convenient access panel simplifies maintenance. When registered, the unit comes with a 10-year limited parts warranty and a lifetime heat exchanger warranty, providing long-term reliability, efficiency, and peace of mind. Find the Brochure HERE
Key Features
- Gas heat and electric cooling in one cabinet: 90,000 BTU input, 81% AFUE furnace section with Direct Spark Ignition and 6 burners.
- R-454B refrigerant: Low-GWP A2L refrigerant, 13.4 SEER2 / 11 EER2.
- ECM blower: Multi-speed ECM indoor blower moving up to 1400 CFM.
- Multi-position duct connections: Field-convertible for horizontal or downflow duct runs.
- LP kit included: Propane conversion kit ships with the unit.
Product Specifications
| Brand | MRCOOL |
|---|---|
| Model | MPG42S090MO13C |
| Series | VersaPro 4th Gen |
| Nominal Capacity | 3.5 Ton (42,000 BTU) |
| Electrical Supply | 208/230V, 1-Phase, 60 Hz |
| SEER2 | 13.4 |
| EER2 | 11 |
| AFUE | 81% |
| CFM | 1400 |
| Tonnage | 3.5 |
| Fuel Type | Natural Gas / Propane |
| Voltage (V) | 230 |
| Stage | 1 |
| Max Fuse Breaker (A) | 45 |
| Min Circuit Ampacity (A) | 29.9 |
| Color | Grey |
| Rated Load | 19 |
| Full Load | 86 |
| Refrigerant Type | R-454B |
| Decibel Rating (dBA) | 80 |
| Number Of Burners | 6 |
| Inverter | No |
| Drain Connection Size | 3/4 |
| Gas Connection Size | 1/2 |
| Control Type | 24V Thermostat |
| Compressor Motor Type | Rotary |
| Condenser Fan Motor Type | PSC |
| Blower Motor Type | ECM |
| Ignition Type | Direct Spark Ignition |
| Metering Device | Piston |
| LP Kit Included | Yes |
| LP Kit Available | Yes |
| Net Depth (in) | 49.75 |
| Net Height (in) | 44.81 |
| Net Width (in) | 51.56 |
| Net Weight (lb) | 539 |
Compatibility & Installation
- Thermostat: Works with standard 24V thermostats; the MRCOOL MST04 smart thermostat is a matched option.
- Electrical: 208/230V single-phase, 60 Hz. Minimum circuit ampacity 29.9 A, maximum fuse/breaker 45 A.
- Gas: 1/2" gas connection; natural gas as shipped, LP conversion kit included.
- Professional installation: Must be installed by a licensed HVAC contractor following MRCOOL instructions and local codes (R-454B is an A2L refrigerant).
