The MRCOOL® Signature Series 48k Heat Pump Condenser is a high-capacity, all-season system built to deliver powerful and efficient heating and cooling year-round. With a 14.3 SEER2 and 11.2 EER2 rating, it ensures consistent indoor comfort while helping reduce energy costs. This model comes pre-charged with R-454B refrigerant, a modern, low-GWP alternative that complies with current environmental standards. It offers reliable performance with a smaller environmental footprint. The factory charge also speeds up installation, reducing labor time for contractors and minimizing hassle for homeowners. A heavy-duty single-speed scroll compressor sits at the heart of the system, designed to provide steady operation across a wide range of conditions. Inner-groove copper tubing improves heat exchange, boosting system efficiency. Integrated temperature and pressure sensors protect against stress from extreme temperatures, while an intelligent defrost function prevents ice buildup during colder weather. Despite its large output, the unit operates at a quiet 65 decibels, comparable to a typical dishwasher. A specially designed sound-control top helps reduce operating noise without affecting airflow, making it a good fit for residential areas. Built for long-term durability, the unit features a steel louver coil guard and wire fan discharge grille to protect internal components from debris and damage. With compact design, accessible service valves, and a 10-year limited parts warranty and a limited lifetime warranty, the MRCOOL® Signature Series 48k Heat Pump Compressor is a smart investment in year-round comfort and reliability.
| Net Dimensions (In) | 29.14 D x 32.875 H x 29.14 W |
| Net Weight (Lbs) | 223 |
| Works With | Signature Series Multi-Position or Stud Mount Air Handlers |
| SEER2 | 14.3 |
| EER2 | 11.2 |
| HSPF2 | 7.5 |
| CFM | 4000 |
| Tonnage | 4 |
| Cooling Capacity (Btu) | 45000 |
| Heating Capacity (Btu) | 45000 |
| Voltage (V) | 208/230 |
| Phase | 1 |
| Cycle | 60 |
| Max Fuse Breaker (A) | 50 |
| Min Circuit Ampacity (A) | 30 |
| Color | Grey |
| Refrigerant Type | R-454B |
| Refrigerant Volume (Oz) | 144.6 |
| Decibel Rating (Dba) | 65 |
| 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 | 1/3 |
| 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) | 34.8 |
| Gross Width (In) | 30.3 |
| Gross Weight (Lbs) | 232 |
| Brochure |
| Installation Manual |
| Energy Guide |
| AHRI Cert |
| Warranty |
I ordered a 2 zone unit for the bedrooms in our home. It took a few months to arrive (manufacturer issue, nothing to do with HOD, and we were contacted on more than one occasion with an order update which was much appreciated!), but when it did arrive was very easy to install. Both the heat and AC function work perfectly, and our family is very happy!
I ordered a HVAC system and it arrived in a timely manner and with no apparent issues. I thought the system was defective once installed but it was the installers fault who wired it wrong. My only issue would be the fee (30% I believe) to return a defective item within the 30 day return policy. If it is defective the customer shouldn't have to pay a fee to return an item that is not operating as designed. Other than that this is a good company.
Installed my own central HP system. It was a bit of work but nothing beyond a person with basic mechanical and electrical skills. It took me a while because I had to remove the existing electric forced air furnace from a pretty tight place. Some custom sheet metal work and a bit of custom electrical too. Worked perfectly when powered up and I actually like the thermostat provided, although I wish it was clearer how to set up a temperature set-back schedule. Pre-charged refrigerant piping was something new and I liked that too. The best thing is that my electric utility forked out $4,000 and that paid for the unit!
Installed with ceiling cassettes... Quiet and keeping us cool so far !
Sure! Here’s a **funny, pun-filled review** you could post online about a **Mr. Cool mini split** — you can tweak it depending on whether you want it to sound like a casual customer or a witty product review.
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😎 “Mr. Cool? More Like Mr. Ice-olation Station!”
Check this guy out. Mr. Cool. He doesn’t talk back, he keeps his chill no matter how heated things get, and best of all, he "splits" his time evenly between cooling and heating. Talk about a balanced relationship! Installation was a breeze (literally). I expected drama, sweat, and a few choice but once he moved in, the temperature dropped faster than my motivation to leave the house.
Now my living room is so cool, penguins are sending me roommate requests. My electric bill? It’s giving "light chill, not frostbite."
Whether it’s summer meltdown season or winter’s silent treatment, Mr. Cool always knows how to vent properly. I’ve never had such a fan-tastic relationship before. So yeah, call me biased, but this unit really "blew me away".
