The MRCOOL® Universal® Series 24K Air Handler is built to deliver powerful, reliable, and energy-efficient comfort all year long. Whether you’re facing freezing winters or scorching summers, this compact unit works hard to maintain your ideal indoor temperature while reducing overall energy consumption—helping to lower monthly utility bills.
Designed with flexibility in mind, the 24K Air Handler supports upflow, downflow, and horizontal installations. Its slim profile makes it easy to install in a variety of spaces, including attics, closets, and crawlspaces. For added convenience, it’s compatible with the MRCOOL® NO-VAC® Quick Connect® line set (sold separately), which eliminates the need for vacuuming or flaring—streamlining installation and saving time. To enhance performance during colder months, the unit also supports optional Universal® Series Heat Kits. These kits provide additional heating capacity and emergency backup heat when needed, boosting efficiency in extreme climates. At the heart of the air handler is an M-shaped evaporator coil with a large surface area that improves airflow and maximizes heat exchange. Made from 100% aluminum, the coil is corrosion-resistant for long-lasting durability. Despite its powerful performance, the unit operates at whisper-quiet sound levels, ensuring comfort without disruption.
Backed by a 10-year parts warranty and a 2-year limited labor warranty, the MRCOOL® Universal® 24K Air Handler is a smart, dependable choice for homeowners looking to upgrade to efficient, long-lasting HVAC technology.
| Net Dimensions (In) | 21.5 D x 49.72 H x14.49 W |
| Net Weight (Lbs) | 123.02 |
| CFM | 824/759.3/694.5/629.8/N\A |
| Tonnage | 2 |
| Voltage (V) | 115/208/230 |
| Phase | 1 |
| Cycle | 60 |
| Max Fuse Breaker (A) | 15 |
| Min Circuit Ampacity (A) | 5.5/3.5 |
| Mount Type | Multi-Position |
| Color | Dark Grey |
| Refrigerant Type | R-454B |
| Decibel Rating (Dba) | N\A/47.5/44/33/N\A |
| Decibel Rating Low (Dba) | 33 |
| Decibel Rating High (Dba) | 47.5 |
| Number Of Speeds | 4 |
| Max Lineset Length (Ft) | 164 |
| Liquid Line Size | 8-Mar |
| Suction Line Size | 4-Mar |
| Filter Type | Replaceable |
| Filter Size | 12 x 20 x 1 |
| Metering Device | EXV |
| Auxiliary Heater Included | No |
| Auxiliary Heater Available | Yes |
| Auxiliary Heater Sizes | 5 KW / 8 KW / 10 KW / 15 KW |
| Ul Listed | Yes |
| CSA Listed | Yes |
| ETL Listed | Yes |
| Base Warranty | 10 Year Parts |
| Base Parts Warranty | 10 Years |
| Base Labor Warranty | 2 Year |
| Contains Electronics | Yes |
| Contains Chemicals | Yes |
| Contains Compressed Gas | Yes |
| Proposition 65 Warning | Yes |
| Gross Depth (In) | 31.1 |
| Gross Height (In) | 17.52 |
| Gross Width (In) | 52.95 |
| Gross Weight (Lbs) | 154.76 |
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.
---
😎 “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".
