Up Highway 7 from our Lafayette shop

Heating and air conditioning in Boulder, CO

From Mapleton Hill Victorians to the postwar ranches of Martin Acres and Table Mesa, Boulder has some of the most varied homes we work on. We repair and replace furnaces, boilers, air conditioners and heat pumps all over town.

Boulder is a short run west on Highway 7 from our shop. It is also a city with its own rules for heating and cooling work, from contractor licensing to an energy code that requires new homes to be all-electric, and it pays to work with someone who knows them.

Whether you need a boiler kept running in a 100-year-old house or want to talk through a heat pump, you get the Nevin family and the same posted prices we charge everywhere.

  • From our shopWest of us, straight out Highway 7
  • Electric and gasXcel Energy
  • ContractorsCity of Boulder mechanical license required
  • Energy codeNew homes all-electric since Dec. 1, 2024

What we see in Boulder homes

The Flatirons above the Chautauqua meadow in Boulder
Boulder, Colorado

Boulder’s housing is older than most of the towns around it. Growth limits going back to the 1959 Blue Line, the 1967 open space tax and the 1976 Danish Plan held down new building for decades, and a 2014 city housing study found only 13 percent of residents lived in homes built since 2000.

The historic districts, Mapleton Hill, Chautauqua, Floral Park, Hillside, University Place and the rest, are where we find boilers, radiators and furnaces tucked into tight basements. The postwar subdivisions came next: Highland Park and Martin Acres in the 1950s, and Table Mesa’s roughly 1,270 houses built between 1962 and 1967. Many of those homes are on their third or fourth furnace, with air conditioning added long after they were built. Most gas furnaces last somewhere around 15 to 20 years and most central air conditioners around 12 to 15, depending on how they were installed and cared for.

Boulder also gets real wind. Downslope windstorms are most common in winter, and gusts of more than 100 mph have been recorded at NCAR’s Mesa Lab. After a big wind event we check outdoor AC and heat pump units, venting and anything on the roof.

What we fix in Boulder

Common heating and cooling calls in Boulder, and where to start.

Boilers and heat pumps

Boilers in the older neighborhoods, and heat pumps for homeowners going electric.

Boilers and heat pumps

No heat

Furnace or boiler quit. What is safe to check before we get there.

No heat? Start here

Repair or replace?

Under Boulder’s code, a like-for-like furnace replacement is still allowed. We will help you weigh the options.

Get an honest answer

AC not cooling

Warm air, iced-up lines, or an outdoor unit that will not start.

Fix my AC

Boulder licensing, energy code and rebates

Boulder requires anyone doing mechanical work in the city to hold a City of Boulder contractor license, and the city will not issue permits to unlicensed contractors. Mechanical permits come from Planning & Development Services, and the fee doubles for work done without one. If you are comparing quotes, ask about both.

Boulder’s 2024 Energy Conservation Code took effect December 1, 2024. New homes and additions have to be all-electric. For existing homes, a like-for-like furnace replacement is still allowed; larger remodels can require the equipment space to be wired for a future electric system, or all-electric equipment when the remodel includes major envelope work. We will tell you which rules apply before you commit to anything.

Xcel Energy provides Boulder’s electricity and gas. For heat pumps and heat pump water heaters, Boulder County’s EnergySmart program offers rebates and advising, and the county notes that City of Boulder residents may qualify for additional rebates. Amounts change through the year, so check the program or our rebates page.

Neighborhoods we serve in Boulder

We work all over Boulder, including:

  • Mapleton Hill
  • Chautauqua
  • Floral Park
  • University Place
  • Highland Park
  • Martin Acres
  • Table Mesa
  • Shanahan Ridge
  • Flatirons Park

Around Boulder

  • The Flatirons. The tilted sandstone slabs on the foothills west of town, the view everyone knows.
  • Chautauqua. Home of the Chautauqua Auditorium and the Colorado Music Festival.
  • Bolder Boulder. The 10K that has filled the streets every Memorial Day since 1979.
  • CU Boulder. The University of Colorado’s flagship campus.

What it costs in Boulder

Same prices in Boulder as everywhere we work. No trip charge games for being a few miles further out.

ServicePriceDetails
Furnace Repair$89 trip/diagnostic fee$89 diagnostic/trip fee that is waived with a repair. Let's get you warm again!
AC Repair$89 trip/diagnostic fee$89 trip/diagnostic fee that will be waived if you choose to go ahead with the repair. The repair price will depend on the specific service needed.
Boiler Repair$89 trip/diagnostic feeDiagnostic/trip fee of $89, waived if you go with the repair. Let's get your heat up and running!
Water Heater Repair$89 trip/diagnostic feeDiagnostic/trip fee waived if you go with the repair. Let us know what's going on with your water heater.
Furnace Inspection$189 per system10-point furnace inspection. Let us know if you have more than one system. No Saturday appointments.
AC Inspection$189 per systemAir conditioner system 10-point inspection checklist. It should be at least 67 degrees at the time of the inspection so the technician can accurately check your AC's refrigerant levels.
AC & Furnace Inspection Combination / Annual Service$250Monday through Thursday only. 10-point checklist of each, including recommendations (if any). Checking the health of your AC and furnace and cleaning parts that typically get dirty. Save $128 by booking them together. May and September are the best months for this.
Evaporative Cooler Start-Up$229Seasonal start-up for your evaporative cooler. We will not allow our technicians to climb onto wet roofs, into high winds or during a lightning storm, for their safety.
Estimate for a new furnace, AC, mini-split or heat pumpFreeFree estimate. Let us know which you are interested in getting a free estimate on, and we will be happy to send a technician your way.

Prices as posted on our online request form. Request any of these online or call 303-464-7000.

What our customers say

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Questions from Boulder homeowners

Do HVAC contractors need a license in Boulder?

Yes. The City of Boulder requires a mechanical contractor license for mechanical work in the city, and it will not issue permits to unlicensed contractors. Ask anyone quoting your job.

Can I still replace my gas furnace in Boulder?

Yes. Under Boulder’s 2024 energy code, a like-for-like furnace replacement is still allowed in an existing home. New homes and additions must be all-electric, and bigger remodels can trigger extra requirements. We will tell you which rules apply to your project.

Are there heat pump rebates in Boulder?

Yes. Boulder County’s EnergySmart program has rebates for heat pumps and heat pump water heaters, and City of Boulder residents may qualify for more. Amounts change, so check the program or our rebates page.

What does a service call cost in Boulder?

The same as everywhere we work. Repairs start with an $89 trip and diagnostic fee, waived if you go ahead with the repair.

Heating or AC trouble in Boulder?

Call the Nevin family or request service online. We will tell you straight what it needs.

Monday to Friday, 7am to 5pm · Send us a message

Financing available

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