
Serving Littleton and nearby
Heating & Air Conditioning in Littleton, CO
Furnace, AC and heat pump service for homes in Littleton, from downtown to the south side.
Services
Our services in Littleton
AC RepairWarm air, a unit that will not start or iced-up lines. We find the cause and quote the fix first.
Air Conditioner InstallationNew central air, sized with a load calculation and installed to code, with the permit handled.
Furnace RepairNo heat, short cycling or a strange smell. We get the furnace running safely and tell you what failed.
Furnace Installation & ReplacementStandard and high-efficiency furnaces, sized with a load calculation, set up for altitude and installed with a permit.
Heat Pump Installation & ServiceCold-climate heat pumps, dual-fuel systems and ductless mini-splits, sized for our winters and serviced year-round.
Heating & Cooling Tune-UpsSeasonal tune-ups for furnaces, air conditioners, heat pumps and swamp coolers, plus an optional maintenance plan.
Local know-how
What we see in Littleton homes
Littleton has an older core around Main Street and a long run of newer neighborhoods stretching south. The older streets bring aging furnaces and ductwork that has been extended over the years. The newer ones bring air conditioners and furnaces that were installed with the house and are now at the age where parts start to fail.
Cottonwood trees along the South Platte River and its creeks shed fluff in late spring, and it mats onto outdoor coils. A clogged coil cannot shed heat, so the system works harder and cools less. A gentle rinse, or a cleaning during a tune-up, makes a real difference.
Many homes here are two stories over a basement. Running the blower on a low fan setting and keeping the upstairs returns clear helps move warm air off the top floor.
Describe the problem on the phone and we will tell you what we think it is before we drive out.

Why us
Why Littleton chooses Mesabrook Heating & Air
Upfront prices
You approve the price before we start
Same-day service
Most calls booked the day you call
Licensed and insured
License number on every invoice
No subcontractors
Our own technicians on every job
5 out of 5 stars
Hail flattened a lot of the fins on our outdoor unit and the AC was struggling. They combed out what they could, cleaned the coil and told us honestly the unit still had a few good years in it.
Rosa G., Aurora · Google
Sample review
4 out of 5 stars
Booked a fall tune-up. The tech found a cracked condensate line on the furnace and a filter slot that let air go around the filter. Fixed both. They had to move my appointment once, but they called a day ahead.
Kevin S., Thornton · Google
Sample review
5 out of 5 stars
Our upstairs bedrooms were always hot. They checked the ducts before quoting, added a return upstairs and installed a two-stage AC. Upstairs is noticeably cooler now, and the crew cleaned up after themselves.
Alicia W., Highlands Ranch · Google
Sample review