Furnace Repair & Installation
Boulder cold snaps punish weak furnaces, and we repair ignition trouble, cold air, and short cycling, and replace furnaces that keep failing.
Learn more →Boulder Heating & Cooling
HVAC Services in Boulder, CO
Boulder sits at about 5,430 feet against the Flatirons, with foothill wind, university-area housing, and homes from the 1900s to new builds. Against the Flatirons at about 5,430 feet, we repair, install, and maintain the HVAC equipment that Boulder homes run on, from 1900s houses near downtown to new builds in Gunbarrel and Table Mesa.
Boulder Neighborhoods We Cover
We serve Boulder from the Pearl Street area to Gunbarrel and Table Mesa, including:
- Downtown Boulder
- Pearl Street area
- North Boulder (NoBo)
- South Boulder
- Table Mesa
- Martin Acres
- Gunbarrel
- East Boulder
- Central Boulder
- Highland Park
From Downtown and the Pearl Street area to Gunbarrel and Table Mesa, our Boulder route covers ZIP codes 80301, 80302, 80303, 80304, and 80305.
Boulder Landmarks: Pearl Street, Flatirons, and CU
Pearl Street Mall anchors downtown, the Flatirons rise on the west side, and Chautauqua Park sits at the base of the foothills. The CU Boulder campus sits south of downtown. Boulder Community Health serves the area, and Rocky Mountain Metropolitan Airport and Denver International Airport (DEN) are the nearest airports.
Heating and Cooling Services in Boulder
Boulder mixes 1900s homes near downtown with new builds in Gunbarrel and Table Mesa, and Flatirons wind punishes every weak spot, so these twelve services lean hard on ductwork, boilers, and air sealing.
Boiler Repair & Installation
Older Boulder homes near downtown still run boilers and radiators, and we fix their leaks, cold radiators, and pressure trouble.
Learn more →Heat Pump Installation & Repair
Heat pumps heat and cool Boulder homes from one unit, and we install and repair them across the city, including in South Boulder and Table Mesa.
Learn more →AC Repair & Installation
Summer afternoons against the Flatirons push Boulder condensers hard, and we bring AC units back from warm air, frozen lines, and odd cycling.
Learn more →Ductless Mini-Split Services
A Pearl Street area addition or a Gunbarrel garage gets its own climate from a mini-split, with no ductwork to cut through the house.
Learn more →Evaporative Cooler Services
Boulder air stays dry enough for a swamp cooler to work well, and we service pads, pumps, and water lines through the summer.
Learn more →Indoor Air Quality
Dust off the foothills and dry winter air leave Boulder homes parched and stuffy, so humidifiers, filters, and ventilation even things out.
Learn more →Maintenance & Tune-Ups
A Boulder tune-up checks the furnace before foothill storms and the AC before summer heat, and catches worn parts early.
Learn more →Commercial HVAC
Rooftop units over Pearl Street shops and offices near the CU campus need steady heat and cooling, and we keep them running.
Learn more →Emergency HVAC Repair
A Boulder furnace or AC that quits without warning gets help fast when you call us.
Learn more →Radiant & Hydronic Heating
Radiant heat under a Table Mesa bathroom floor or a Martin Acres addition warms evenly, and we repair cold loops and install new ones.
Learn more →ERV Installation
A well-sealed Boulder new build holds stale air in, and an ERV trades it for fresh air while holding onto heat.
Learn more →Flatirons Wind, Old Ductwork, and Boulder Homes
Flatirons wind finds leaks. Foothill wind off the Flatirons drives cold air into leaky ducts and wall gaps, so rooms on the windward side of a Boulder house run cold. We seal ductwork and check airflow so heat stays inside.
Old ductwork near downtown. Boulder homes from the 1900s to the 1950s often have ducts sized for a different era, so some rooms near downtown run hot while others stay cold. We test airflow, seal leaks, and rebalance supply.
Boilers in older homes. In 1900s to 1950s homes near downtown and around the CU Boulder campus, boilers and radiators still do the heating, and they show their age as leaks, cold radiators, and pressure trouble. We repair those faults, and when a boiler in North Boulder or Martin Acres has run past its useful life, we replace it with a unit sized for the house as it stands.
Hot summers, hard-working AC. A long hot afternoon against the Flatirons pushes a Table Mesa or South Boulder AC unit hard, and a low refrigerant charge or a dirty coil shows up as warm air or a frozen line. We find the cause and restore cooling from downtown Boulder to Table Mesa.
Dry air in winter. Winter heating in a Boulder home dries indoor air fast, and that shows up as static shocks, cracked woodwork, and scratchy throats by morning. A whole-home humidifier adds moisture back and protects Boulder woodwork and floors.
Foothill weather can flip from calm on one street to gusting on the next under the Flatirons, so check the National Weather Service forecast office in Boulder forecast for Boulder, and for foothills dust and dry winter air in a Table Mesa home, the EPA indoor air quality pages cover how to handle dust and dry air inside a Boulder home.
How Boulder Heats and Cools Its Homes
Boulder sits right against the foothills, and its weather shows it. Foothill wind drives cold air into homes, winter storms drop snow fast, and summer afternoons climb high. The Flatirons shape local wind, so one street can feel calm while another gusts. A Boulder heating and cooling system has to handle Flatirons wind, snow, and summer heat in the same year.
Housing in Boulder runs from 1900s to 1950s homes near downtown and the university to 1960s to 1970s builds and newer homes on the edges. Older homes often carry old ductwork, radiators, and boilers. Newer homes run on high-efficiency furnaces, heat pumps, and AC units. We work on all of it, and we size replacements for the home as it stands.
Boulder Questions, Answered
Yes. We serve Downtown Boulder, the Pearl Street area, North Boulder, South Boulder, Table Mesa, Martin Acres, Gunbarrel, East Boulder, Central Boulder, and Highland Park. Tell us your neighborhood when you call so we can plan the visit.
Flatirons wind drives cold air into leaky ducts and wall gaps, so rooms on the windward side run cold. We seal ductwork, test airflow, and check insulation gaps so heat stays inside a wind-battered Boulder home and reaches every room from downtown to Gunbarrel.
Yes. Some older Boulder homes still heat with boilers and radiators. We repair leaks, cold radiators, and pressure trouble in older Boulder boilers near downtown and the CU campus, and we replace boilers that have run past their useful life.
Yes. In Boulder, a cold-climate heat pump handles foothill winter storms and still cools the house on summer afternoons against the Flatirons. We match the size to the house, from a 1900s home near downtown to a newer build on the edges, and we confirm defrost cycles, airflow, and refrigerant charge so it keeps heating on cold nights.
Old ductwork is a common cause. Boulder homes from the 1900s to the 1950s often have ducts sized for a different era, with leaks and long runs that lose heat before it reaches the far rooms of a downtown house. We test airflow, seal duct leaks, and rebalance supply so heat reaches every room of a 1900s Boulder home near downtown.
Change the filter, clear vents and returns, and have the furnace or boiler checked before the first foothill storm drops snow on the Flatirons above Boulder. We inspect burners, ignition, safety controls, and airflow, and we flag worn parts before a Flatirons storm tests them.
Last updated: October 16, 2026.