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Top-Rated Furnace / forced air heating system install or replace pros in Littleton - Updated Nov 2026

Avatar for Quality West Heating & Cooling
Quality West Heating & Cooling
4.7(
338
)
Gas Furnace / Forced Air Heating System - InstallBoiler or Radiator Heating System - Install or ReplaceDuctless Mini-split Heating System - Install or Replace+6 more

Serving Littleton, CO and surrounding areas

Approved

In business since 2002

Free estimates

Warranties offered

"We had trouble with our furnace constantly shutting off and on and rarely getting to the set temperature making for some pretty cold nights! After 3 different companies came out to troubleshoot, we still didn't have answers other than recommendations to replace our 4 year old furnace. Don came out and solved the problem in about 20 minutes! He was friendly, professional and knowledgeable and we are so thankful for his expertise! We will definitely use this company again and have signed up for yearly cleanings/inspections!"
This image shows the wall mounted unit that will cool and heat the whole living room area without any noise.
Response time2 days
Response rate100%
9 neighbors recently requested a quote
Avatar for Emporia Home Services
Emporia Home Services
4.8(
22
)
Gas Furnace / Forced Air Heating System - InstallDuctless Mini-split Heating System - Install or ReplaceDucts & Vents - Install or Replace+22 more

Serving Littleton, CO and surrounding areas

Approved

In business since 2017

Free estimates

Emergency services offered

"Very professional. They did an annual service check on my furnace. While doing so, they found that my filter was wrong and could have caused major damage to the furnace. They were able to find me the correct filter in a timely manner. I'll be calling them whenever something is wrong or I need another furnace cleaning/check."
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+11

Response time2 days
Response rate100%
8 neighbors recently requested a quote
Avatar for Behold Heating & Cooling Services
Behold Heating & Cooling Services
5.0(
87
)
Gas Furnace / Forced Air Heating System - InstallElectric Furnace / Forced Air Heating System - InstallHeat Pump - Install or Replace+11 more

Serving Littleton, CO and surrounding areas

Approved

Super Service Award Winner

In business since 2023

Free estimates

Emergency services offered

"Great experience with seasonal maintenance check. They arrived early in appointment window, checked furnace, humidifier, & air conditioning, explained everything clearly. They replaced a filter, examined every part of air conditioning system, made some recommendations, had easy payment system. I will look forward to using them again!"
Mini Split Install
A nice, new, clean Boiler - restoring heat right in time for the evening!
Glad we were able to restore heat same day for this customer.  Replaced Furnace and A/C for proper installation, air flow and 10 year warranty on FULL SYSTEM.
Glad we were able to restore heat same day.   Full Boiler replacement, repipe and zone valves.
Mini Split Install

+67

22 neighbors recently requested a quote
Recommended by41%of homeowners
Avatar for Comfair Heating and Cooling LLC
Comfair Heating and Cooling LLC
5.0(
24
)
Electric Furnace / Forced Air Heating System - InstallElectric Furnace / Forced Air Heating System - Install - For BusinessElectric Furnace / Forced Air Heating System - Repair+9 more

Serving Littleton, CO and surrounding areas

Approved

Super Service Award Winner

In business since 2023

Free estimates

Emergency services offered

"I recently had Comfair Heat and AC install a new furnace, and I couldn’t be happier with the experience. From start to finish, the team was timely, professional, and incredibly friendly. They showed up exactly when they said they would, walked me through the process, and completed the installation efficiently without cutting any corners. Their pricing was very fair compared to other quotes I received, and the quality of their work truly stands out. The new furnace runs perfectly, and the difference in comfort is noticeable already. Overall, Comfair delivered fantastic service, and I highly recommend them to anyone needing heating or AC work. I’ll definitely be using them again in the future."
Commercial
Commercial
Furnace fix
New  Unit install
Residential

+3

Response time3 hrs
Response rate100%
1 neighbors recently requested a quote
Avatar for Bee There Heating & Air
Bee There Heating & Air
4.9(
75
)
Gas Furnace / Forced Air Heating System - RepairGas Furnace / Forced Air Heating System - Repair - For Business

Serving Littleton, CO and surrounding areas

Approved

In business since 2015

Free estimates

Emergency services offered

"Jason arrived the same day I put up my project and was very professional. Our furnace had gone out. He was honest, took care of the problem at a fair price and also brought an issue with our water heater to my attention. I highly recommend Bee There!"
Littleton
Denver
Highlands Ranch
Littleton
Lakewood

+21

Response time3 hrs
Response rate88%
Recommended by97%of homeowners
Avatar for Controlling Systems
Controlling Systems
4.4(
14
)
Gas Furnace / Forced Air Heating System - InstallElectric Furnace / Forced Air Heating System - InstallBoiler or Radiator Heating System - Install or Replace+43 more

Serving Littleton, CO and surrounding areas

Approved

In business since 1976

Free estimates

Emergency services offered

"So far as I can tell, the quality of the products and the quality of their installation was fine. The furnace includes PVC pipe venting both to bring combusting air into the furnace from the outdoors and taking exhaust gases outdoors through another PVC pipe through a concentric vent in the outside wall. This process is designed to prevent any exhaust gases in the basement or any bad negative air pressure in the basement. The furnace is an energy star with 95 percent efficiency. The only negative aspect of all this was Controlling Systems' behavior relating to scheduling as described in the section above."
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15 neighbors recently requested a quote
Recommended by76%of homeowners
Avatar for Heart Heating, Cooling, Plumbing & Electric
Heart Heating, Cooling, Plumbing & Electric
4.7(
92
)
Gas Furnace / Forced Air Heating System - InstallGas Furnace / Forced Air Heating System - Install - For BusinessGas Furnace / Forced Air Heating System - Repair+5 more

Serving Littleton, CO and surrounding areas

Approved

Super Service Award Winner

In business since 2019

Free estimates

Emergency services offered

"We had an issue with our furnace popping a breaker. Roberto was sent out by Heart Heating & Air to investigate. Roberto did a thorough check of our HVAC system. Roberto concluded the issue was indeed electrical. He was not able to troubleshoot since he's not a certified electrician. However, while checking our system, he found the A/C drain in the furnace clogged with Miller Moths. Had he not discovered the clog, the system could have shut down due to an interlock that senses water backing up in the drain tube. Plus, he took the time to educate me on other aspects of our HVAC system. Greg, Heart's electrician, came up and fixed the issue the next morning. After he got done, he took the time to visit with us for a few minutes, telling us about his Mom, Grandma and upbringing in Puerto Rico. He had us in stitches, laughing about his experience being raised there and telling us about his dear Grandma. We also discussed Puerto Rican food, which we knew nothing about. We'll check it out after visiting with Roberto. Roberto knows his business, he's very professional and has a "GREAT" personality. He seemed like a longtime friend more so than a HVAC technician here for a job. We've had a lot of interaction with Heart after having a new A/C, furnace, humidifier, HEPA filter, electrostatic filter and whole house fan installed. The system as a whole is awesome and all the technicians we've had in our home for the installs and follow up have all been consummate professionals. All have been respectful of our home, wearing shoe covers as they come in the house and most of all, I can tell they all enjoy what they do. When you need HVAC, electrical work, or any other services Heart performs, check these guys out. You won't be sorry."
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+24

8 neighbors recently requested a quote
Recommended by81%of homeowners
Avatar for FerguSons Heating and Cooling LLC
FerguSons Heating and Cooling LLC
5.0(
7
)
Gas Furnace / Forced Air Heating System - InstallBoiler or Radiator Heating System - Install or ReplaceBoiler or Radiator Heating System - Install or Replace - For Business+43 more

Serving Littleton, CO and surrounding areas

Approved

In business since 2021

Free estimates

Emergency services offered

"My dad is elderly and needed a new HVAC system. So I decided to find a person who could install a new HVAC system and we found Cody. Cody was very friendly, honest, and communicated very well. At one point he told us we could probably go another 3-5 years with the current system, but since my dad only has so many years left we told he to go ahead and install a whole new system in. He treated us like gold and even spent the time showing my Dad all the new features with the thermostat. I would highly recommend Cody for any repairs or HVAC needs you have."
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+51

Response time2 days
Response rate100%
3 neighbors recently requested a quote
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FAQs for furnace / forced air heating system install or replace projects in Littleton, CO

Converting from an oil furnace to an electric furnace isn't a simple swap—the oil system needs to be completely removed before installing the electric furnace. You'll need a full electric system installation, but you might be able to reuse existing ductwork if it's up to current safety standards. You’ll need to budget for a new electric furnace installation, which costs between $1,800 and $6,200, including professional removal, proper disposal, and safe installation of the new system.

Electric furnaces are 100% efficient at converting electricity into heat. However, some of that heat can be lost as it travels through your home's ductwork or escapes through poorly insulated areas. That's why regular duct maintenance and proper home insulation are important to maximize your furnace's efficiency and reduce heat loss, ensuring consistent warmth and lower energy costs.

With proper maintenance, an electric furnace can last anywhere from 20 to 30 years, outlasting the average gas furnace's lifespan of 15 to 20 years. To keep your electric furnace running efficiently, schedule regular cleanings, tighten connections, and have inspections done before winter arrives. With routine maintenance, you’ll ensure consistent, safe heating for years to come.

The size of the electric furnace you need depends on factors like your home's square footage, climate, and insulation quality. As a general guideline, those who live in warmer climates should multiply their square footage by 30 to 35 BTUs, while those in cooler areas should multiply it by 50 to 60 BTUs.

Consulting with an HVAC professional can help you determine the exact size that's right for your home.

An electric furnace works by converting electricity into heat using high-resistance heating elements. A blower then pushes the warm air through your home's ductwork, distributing heat evenly throughout your space. Since there's no combustion involved, electric furnaces eliminate the risks associated with gas furnaces and provide consistent, reliable heating when properly installed.

An electric furnace uses between 40 and 80 kilowatts per day to heat your home. The exact amount it uses depends on factors like your home's size, insulation, and overall energy requirements. Larger homes or those with poor insulation use more energy than smaller, well-insulated spaces. A professional furnace assessment can help confirm the ideal unit size for your needs.

The Littleton, CO homeowners’ guide to furnace / forced air heating system installs or replaces

From average costs to expert advice, get all the answers you need to get your job done.