★★★★★ Rated 4.7 out of 5
4.7 Google rating from 432 reviews
Boiler Repair and Replacement in Littleton, CO
Hot-water heat kept running, or replaced when it's time.
- HVAC diagnostic: $99.95
- Price before any work starts
- Written guarantees
Boiler Repair in Littleton From Our Shaffer Parkway Shop
Summit Heating, A/C, Plumbing & Electrical repairs and replaces hot-water boilers for homeowners in Littleton from our shop at 8091 Shaffer Pkwy, Suite C. A boiler heats water and sends it to radiators or baseboard instead of blowing air through ducts. This page is for homes with that kind of heat: a boiler that won’t fire, rooms that stay cold, a leak at the boiler, or an old unit you’re deciding whether to keep. Your technician finds the cause, explains it, and shows you the price before any work starts.
HVAC diagnostic: $99.95. Your technician reviews the estimate with you. You can approve it on the spot or later through a link to the estimate.
HVAC diagnostic: $99.95. Your technician reviews the estimate with you. You can approve it on the spot or later through a link to the estimate.
Hot-Water Boiler Problems We Repair
No heat
The boiler won't fire, or it runs and the radiators stay cold.
Some rooms cold
Heat reaches part of the house but not the rest.
Leaks
Water at the boiler, a valve or the piping near it.
Pressure trouble
The gauge reads high or low, or the relief valve drips.
Banging or gurgling
New noises from the boiler or the pipes when the heat comes on.
Each symptom has more than one possible cause, so the diagnostic comes before the price.
How a Boiler Repair Visit Works
- Call (720) 870-1580 or request service online. Hours are Monday to Friday 7am to 6pm and Saturday and Sunday 8am to 3pm. After hours: our answering service takes your call and we call back the next business day.
- Your technician runs the HVAC diagnostic ($99.95) on the boiler and its controls and shows you what failed.
- You hear about repair first when repair is real.
- Your technician reviews the estimate with you. Approve it on the spot, or later through the link.
- For a replacement, we pull the permit for your address, install the new boiler, fill and test the system, and clean up.
When Boiler Repair Makes More Sense Than Replacement
We start with repair. Many boiler problems are a pump, a valve, a control or a leak that can be fixed without replacing the boiler. When the boiler itself is failing, your technician explains why and gives you a replacement estimate you can approve now or later.
What changes the price:
Xcel rebates may apply. We confirm current amounts with your quote. Programs change without notice. Eligibility is confirmed at quote. Checked Nov 2026. The federal 25C credit doesn’t apply to equipment placed in service after Dec 31, 2025.
What changes the price:
- Whether the fault is in the boiler, a pump, a valve or the controls.
- For a replacement: boiler size and type, venting, and the near-boiler piping.
- Access to the boiler room.
- Permit requirements at your address.
Xcel rebates may apply. We confirm current amounts with your quote. Programs change without notice. Eligibility is confirmed at quote. Checked Nov 2026. The federal 25C credit doesn’t apply to equipment placed in service after Dec 31, 2025.
Lennox Premier Dealer and NATE-Certified Heating Team
Summit is a Lennox Premier Dealer and a Mitsubishi Diamond Contractor, holds the Lennox Centurion Award, and employs NATE-certified technicians.
Littleton Altitude, Codes and Boiler Permits
Littleton sits at roughly 5,320 to 5,360 feet (City of Littleton historic survey), and gas appliances here are set up to the manufacturer’s high-altitude instructions for the model. Heating demand is long: NOAA’s 1991-2020 normals for Denver International Airport show about 5,863 heating degree days a year.
Inside city limits, the City of Littleton Building Division takes permits through eTRAKiT for regulated mechanical work and has adopted the 2024 International Mechanical, Fuel Gas and Plumbing codes. Littleton registers mechanical contractors under a Class D-11 HVAC registration, because Colorado has no statewide HVAC license. (City of Littleton, checked Nov 2026.)
Some Littleton mailing addresses are unincorporated Jefferson County, around Columbine and Chatfield State Park, about 3 miles from our shop, where the county applies the 2024 codes from July 1, 2026. Others are unincorporated Arapahoe County, which still works from the 2021 codes. We confirm the right office and pull the permit. (Checked Nov 2026.)
Inside city limits, the City of Littleton Building Division takes permits through eTRAKiT for regulated mechanical work and has adopted the 2024 International Mechanical, Fuel Gas and Plumbing codes. Littleton registers mechanical contractors under a Class D-11 HVAC registration, because Colorado has no statewide HVAC license. (City of Littleton, checked Nov 2026.)
Some Littleton mailing addresses are unincorporated Jefferson County, around Columbine and Chatfield State Park, about 3 miles from our shop, where the county applies the 2024 codes from July 1, 2026. Others are unincorporated Arapahoe County, which still works from the 2021 codes. We confirm the right office and pull the permit. (Checked Nov 2026.)
Our Written Guarantees on Every Boiler Job
Google Reviews of Summit Heating, A/C, Plumbing & Electrical
Summit holds a 4.7 rating from 432 Google reviews.
"He provided us with reasonable recommended service options and wasn't pushy about it. Really appreciated the honesty."
Bryan
Related Heating and Cooling Services Near Littleton
HVAC Services Related to Boilers
Furnace Repair, Replacement and Heating Tune-Ups
If your heat comes from a forced-air furnace instead, see furnace repair and furnace replacement. Every heating system benefits from a fall check: see the furnace tune-up page for timing. For summer cooling in a boiler home with no ducts, ductless mini-splits are the usual route.
The Littleton HVAC page lists everything else. The Denver boiler page covers the wider metro, and Ken Caryl is next door to our shop.
The Littleton HVAC page lists everything else. The Denver boiler page covers the wider metro, and Ken Caryl is next door to our shop.
Boiler Repair Questions from Littleton Homeowners
How much does boiler repair cost in Littleton?
Every visit starts with the $99.95 HVAC diagnostic. Your technician finds the fault, then shows you the repair price before any work starts. You can approve it on the spot or later through a link.
Should I repair or replace my old boiler?
We look at repair first, because many boiler problems are a pump, valve or control. If the boiler itself is failing, your technician explains why and gives you a replacement estimate to approve now or later.
Do I need a permit to replace a boiler in Littleton?
A boiler replacement is regulated mechanical and gas work, so we pull a permit through the City of Littleton’s eTRAKiT portal inside city limits, or through Jefferson or Arapahoe County for unincorporated addresses.
Can I add air conditioning to a house with a boiler?
Yes. Boiler homes usually have no ducts, so a ductless mini-split is the common way to add cooling without opening walls for ductwork.
Can I finance a new boiler?
Financing is available through Service Finance Company, LLC, subject to credit approval. See terms when you apply.
Schedule Boiler Repair in Littleton
Book a boiler diagnostic Call (720) 870-1580 to book a heating diagnostic or a replacement estimate. Or request service at /get-a-quote/.