Performance™ 19 Crossover Heat Pump
37MUHA
Compact efficiency for versatile home comfort.
Engineered for versatility and efficiency, this compact heat pump delivers up to 19 SEER2 for potential premium energy savings. Its slim profile allows installation as close as four inches from your home, or it can be roof-mounted or stacked for multi-family housing.
- ENERGY STAR®
Features
Stay comfortable in every season with dependable performance and premium comfort features built for everyday use.
Maintains balanced indoor humidity levels and operates efficiently even at lower speeds, enhancing your comfort naturally.
Operates as low as 59 decibels, designed to create a calm, peaceful home atmosphere without disruptive noise.
Compatible with Puron Advance™ refrigerant, which reduces global warming potential by 75% compared to traditional options, while maintaining non-ozone-depleting properties.
Experience peace of mind with Carrier's Consumer Choice Warranty. Upon timely registration, on eligible equipment select either a 10-year parts only limited warranty or a 5-year parts, plus a 3-year labor limited warranty.1
At a glance
Overall Efficiency
ENERGY STAR® certifiedCooling Efficiency
Up to 19 SEER2, up to 12.4 EER2Compressor Type
Variable-speedSound Performance
As low as 59 decibelsSize
Available in various sizes to accommodate most homesRefrigerant
Puron Advance™Operating range
-22° F - 122° FDiscover how Carrier's compact heat pumps deliver energy efficiency, space-saving design and year-round comfort in a unit thoughtfully designed for modern living.
Customer Reviews
4.0 /5
4.0 rating of Reviews (19)
HVAC review
August 24, 2026
Thermostat instructions not clear on auto and on as to recirculate
Ok product
August 22, 2026
Gas furnace was way better than the heat pump.Too late now
Excellent heat pump
August 13, 2026
When paired with the 45MUHA and communicating thermostat, this unit operates very smoothly and delivers consistent and comfortable temperatures in our home. We live in Phoenix AZ and this unit has had no problems keeping us cool without drawing much power.
Running great heat and cool
August 10, 2026
Now that the thermostat is staying connected to our WiFi everything is running as it should. Heat is comfortable and cool very nice. This is our first A/C experience (we replaced an old swamp cooler) and so far love it
Will not recommend
August 5, 2026
This heat pump sounds like a jet is taking off from the side of my house
Heat Pump summer cooling
July 21, 2026
Not getting our 2nd floor bedrooms cooled very well at all.....
Documents
Brochure
Carrier Crossover Brochure featuring Puron Advance
Warranty Card
CAC/BDP Limited Warranty Certificate Limited Warranty for Ductless Split Units
California residents please see Proposition 65
Legal disclaimer
- To the original owner on eligible equipment for eligible residential applications. Warranty period is 5 years if not registered within 90 days. Jurisdictions where warranty benefits cannot be conditioned on registration will automatically receive a 10-year parts limited warranty, which can be changed to the 5-year parts, plus a 3-year labor option on eligible equipment within the first 90 days after installation. The 5-year parts, plus 3-year labor warranty option is available only if the installing dealer/contractor has elected to participate in the Consumer Choice warranty program and has accepted the Consumer Choice dealer terms and conditions.