Top 10 furnace repair services in Thornton, CO

Porch Pro Headshot premier heating and air
Furnace Repair
Serves Thornton, Colorado
(1,290)
We are a full heating and cooling company in the Denver, Colorado area with extensive knowledge in Heating, Air Conditioning Installations, Water Heaters including Tankless Systems, Electrical and all Indoor Air Quality needs including Humidifiers and Air Purifiers. All of our HVAC service technici...Read more about premier heating and air
We are a full heating and cooling company in the Denver, Colorado area with extensive knowledge in Heating, Air Conditioning Installations, Water Heaters including Tankless Systems, Electrical and all Indoor Air Quality needs including Humidifiers and Air Purifiers. All of our HVAC service technici...Read more about premier heating and air
Porch Pro Headshot One Hour Heating & Air Conditioning - Denver
Furnace Repair
Serves Thornton, Colorado
(939)
One Hour Heating and Air Conditioning's highly skilled, certified, background checked and drug tested technicians have cared for the Greater Denver area's indoor living quality for over 10 years. We're ready 24/7 to solve minor or major issues so you can live comfortably.
One Hour Heating and Air Conditioning's highly skilled, certified, background checked and drug tested technicians have cared for the Greater Denver area's indoor living quality for over 10 years. We're ready 24/7 to solve minor or major issues so you can live comfortably.
Porch Pro Headshot Smith & Willis Heating & Air Conditioing LLC
Furnace Repair
Serves Thornton, Colorado
(117)
"Absolutely 5 stars! Frank explained what I needed & did an excellent job of making sure it all came together for me. The actual price was lower than competitors. The technicians were on time and installed the unit without a hitch. It was a pleasure doing business with Smith & Willis."
"Absolutely 5 stars! Frank explained what I needed & did an excellent job of making sure it all came together for me. The actual price was lower than competitors. The technicians were on time and installed the unit without a hitch. It was a pleasure doing business with Smith & Willis."
Porch Pro Headshot Groulx Mechanical Heating and Cooling inc
Furnace Repair
Serves Thornton, Colorado
(126)
Groulx Mechanical Heating and Cooling Inc., Is a newly establish company, locally owned and family operated. We are committed to be the company you can trust with quality service and affordable pricing.
Groulx Mechanical Heating and Cooling Inc., Is a newly establish company, locally owned and family operated. We are committed to be the company you can trust with quality service and affordable pricing.
Porch Pro Headshot Mr. Cool Heating and Cooling
Furnace Repair
Serves Thornton, Colorado
(58)
At Mr. Cool Heating & Cooling, we ensure the maximum value for every penny spent on our services. We complete work on-time and within budget, guaranteed. So If your looking for a HVAC Contractor,Air conditioning contractor or Heating contractor in or around Denver Colorado then call today!!! We are ...Read more about Mr. Cool Heating and Cooling
At Mr. Cool Heating & Cooling, we ensure the maximum value for every penny spent on our services. We complete work on-time and within budget, guaranteed. So If your looking for a HVAC Contractor,Air conditioning contractor or Heating contractor in or around Denver Colorado then call today!!! We are ...Read more about Mr. Cool Heating and Cooling
Porch Pro Headshot Indoor Air Quality Inc
Furnace Repair
Serves Thornton, Colorado
(64)
Indoor Air Quality, Inc., a Denver HVAC company, was established in 2001 by Joe Collida and Pat Comeford in Aurora, Colorado. Joe and Pat continue to manage the company today and take pride in providing a family environment for all of our employees. Both owners are very hands-on in all aspects of th...Read more about Indoor Air Quality Inc
Indoor Air Quality, Inc., a Denver HVAC company, was established in 2001 by Joe Collida and Pat Comeford in Aurora, Colorado. Joe and Pat continue to manage the company today and take pride in providing a family environment for all of our employees. Both owners are very hands-on in all aspects of th...Read more about Indoor Air Quality Inc
Porch Pro Headshot HAVENS HVAC LLC
Furnace Repair
Serves Thornton, Colorado
(216)
Porch Pro Headshot EC Plumbing LLC
Furnace Repair
Serves Thornton, Colorado
(8)
When you need fast plumbing repair, choose a master plumber who cares about your home and business. EC Plumbing in Lakewood, Colorado, brings more than 25 years of combined mechanical experience and five years of apprenticeship training to each job we take. Licensed in Colorado since 2008, our team ...Read more about EC Plumbing LLC
When you need fast plumbing repair, choose a master plumber who cares about your home and business. EC Plumbing in Lakewood, Colorado, brings more than 25 years of combined mechanical experience and five years of apprenticeship training to each job we take. Licensed in Colorado since 2008, our team ...Read more about EC Plumbing LLC
Porch Pro Headshot Dick Jones Heating and Cooling
Furnace Repair
Serves Thornton, Colorado
(3)
Dick Jones Heating and Cooling has been keeping the Front Range comfortable since 1965. We deliver quality HVAC services priced right. Our flat rate, straight forward pricing is changing the way homeowners purchase home comfort systems. Our standard installed pricing for central air conditioning and...Read more about Dick Jones Heating and Cooling
Dick Jones Heating and Cooling has been keeping the Front Range comfortable since 1965. We deliver quality HVAC services priced right. Our flat rate, straight forward pricing is changing the way homeowners purchase home comfort systems. Our standard installed pricing for central air conditioning and...Read more about Dick Jones Heating and Cooling
Porch Pro Headshot Rabbit Heating & Air LLC
Furnace Repair
Serves Thornton, Colorado
Quality Sevice & Installation from a dealer you can trust. If you need service, a quote or information please contact us by phone for a faster response. E-mails are checked during regular business hours Monday - Friday 8:00 am - 4:30 pm, you will receive a response within 24 hours. Better Busines...Read more about Rabbit Heating & Air LLC
Quality Sevice & Installation from a dealer you can trust. If you need service, a quote or information please contact us by phone for a faster response. E-mails are checked during regular business hours Monday - Friday 8:00 am - 4:30 pm, you will receive a response within 24 hours. Better Busines...Read more about Rabbit Heating & Air LLC

Frequently asked questions about heating & furnace repair companies

Your furnace should be cleaned every year or every two years at the most. A yearly furnace cleaning can catch small problems and fix them before they become serious repairs. It's like how changing the oil in your car may prevent a breakdown in the future. You should plan to have your furnace cleaned before you need it in the winter. Most people leave this to the last minute, and HVAC companies become very busy as the temperature drops.

Some indicators that your furnace needs to be cleaned:

  • The temperature is inconsistent from room to room.
  • Your furnace is struggling to maintain the temperature you set.
  • The furnace produces no heat at all.
  • You have a higher than expected energy bill after turning it on.
  • You smell rubber, smoke, or oil when you turn it on. (It's normal to smell dust).
  • Your furnace flame is any color but blue, which can indicate an imbalance in the gasses.
  • It makes a loud bang, howling, or whistling sound. This points to clogged air filters, dirty burners, or a restricted fuel supply.

Some people consider cleaning the furnace in the spring rather than in the fall. The best practice is to vacuum the furnace out in the spring, then do your annual maintenance in the late summer or fall.

Regular furnace maintenance can extend your furnace’s life by years and prevent some costly repairs. Regular furnace maintenance involves taking apart essential components, inspecting and cleaning them, then reassembling them for use. These components include your furnace filter, blower, burners, and flame sensors.

You can tackle a lot of this work on your own. It may take a few hours to familiarize yourself with the tools and equipment if it's your first time maintaining your furnace. Once you know the drill, furnace maintenance shouldn’t take more than a couple of hours. Start by shutting off the furnace's electrical power and fuel supply. Once that’s done, the combustion chamber can be accessed, vacuumed out, and inspected for holes. If you find any holes, patch them with foil tape.

Next, thoroughly clean the blower compartment. This will remove dirt and debris. Like with the combustion chamber, you or a professional need to inspect for any holes. Don’t forget to replace the air filter. You may be able to upgrade the air filter so it protects against mildew, pollen, and other airborne allergens. If you have an oil furnace, you’ll also want to replace the oil filter. This should be done annually. Finally, oil the machine bearings, taking care not to over-lubricate them.

If your furnace makes odd noises, you should hire a professional as soon as possible. There are a few other indicators that your furnace needs professional attention. Excessive soot could mean your burners need adjustment or that the heat exchanger needs replacing. If your flame is pale in color or irregular, this can indicate dirty burners or a cracked heat exchanger. This is a potential hazard and requires a professional to investigate. If your furnace is short-cycling (which means it only runs for a short period of time before shutting off), you may have a thermostat issue or an overheating exchanger. This also requires the expertise of a professional.

You should have your furnace serviced annually for the best results. Some people will wait every two years, though better maintenance schedules often mean fewer surprises. Most times, when a furnace stops providing heat without warning in the winter, the issue could have been solved with a maintenance call the season beforehand. Maintained furnaces run at their best efficiency, which helps your energy bill.

Furnace services can reveal carbon monoxide leaks, a health hazard that needs to be fixed immediately. If left untreated, carbon monoxide can lead to dizziness, nausea, headaches, and even death.

When hiring a professional, whether for annual maintenance or repairs, a quick search for “Furnace repair near me” will bring up several local companies to hire. Most states require HVAC companies to be licensed. They should also be fully insured and bonded. A great HVAC repair company will be transparent in what they do and what they charge, and they should be able to show documentation if requested. HVAC companies get quite busy as the temperature drops, so consider calling in the late summer and get ahead of the rush.

Your HVAC company should be able to give you an estimate of what repairs will cost. Oil and gas furnace repairs cost more than their electrical competitors, but their maintenance costs should be similar. If your furnace is over ten years old, you should prioritize annual maintenance. Most furnaces need to be replaced within ten to twenty years. Most furnace companies will advise that any serious repairs to an older furnace may not last long and that replacing your furnace would be the best option.

If your furnace is not producing heat, there are several components you should check. Start with the thermostat - is it switched to “heat”? What temperature does the thermostat say compared to the actual room temperature? Try setting the thermostat to five degrees higher and see if the furnace kicks on. Replace the battery and check the wiring for any breaks. Ensure there are no loose wires within the thermostat, and blow away any dust while you’re in there.

Check the fuse box and the power switch for the furnace and ensure that everything is switched on. Occasionally, a clogged filter can cause the furnace to shut off, so check your filters next. The gas line should be open, but may be switched off for whatever reason. If the drain hose is particularly dirty or the chimney flue is clogged, this could also be why your furnace doesn’t produce any heat. Clean them of dust and debris and try the furnace again. After that, check the heat vents and ducting. Clogs in those areas may also affect your furnace’s heat.

If you’ve tried all that and your furnace still isn’t turning on, it’s time to call a professional to get your furnace repaired. They’ll also run through these basic troubleshooting steps, then move on to the complex components and causes of failure within furnaces. If your furnace is older than fifteen years or breaks down regularly, you may want to consider replacing it. New models are more efficient, and repairs can be expensive in the long run.

If you’re looking to have your furnace serviced or tuned up, the cost will depend on the type. An electric furnace can cost between $70 to $130 for a tune-up. Gas furnace tune-ups can cost between $80 to $170, whereas oil furnaces can cost between $100 to $200. A tune-up involves an inspection of the flues and vents, air filters, ignitor switches, fan belts, blowers, motors, electrical components, the heat exchanger, the condensate drain, and testing the thermostat.

Some HVAC companies have two standards for maintenance calls. A basic maintenance call will include a cleaning and offer a diagnostics report. The advanced maintenance call will involve a full tune-up and cleaning of your furnace’s sensors. This can cost between $130 to $200, whereas the basic (or standard) may cost between $70 to $130.

Other factors may alter the cost of furnace maintenance. If you do this at a slower time of year for HVAC companies, you may pay less. Also, if you have several HVAC systems, you may be able to get a discount. You may be charged more if your HVAC system is hard to reach. Some HVAC companies offer a discount for a maintenance plan. Others may charge more if you haven’t serviced the furnace in over a year, as more work will be involved.

The cost to repair a furnace is much higher than the cost to maintain one. The average repair cost for a furnace is anywhere from $100 to $600, based on the issue. There's a hidden cost as well - if your furnace is under warranty and you neglected the annual maintenance, the furnace company may not honor the warranty.

Furnaces make several different noises which indicate different problems. If your furnace is banging or booming when you turn it on, this likely indicates a delayed ignition. This can be attributed to a defective ignitor, a weak flame or pilot light, low gas pressure, or a burner malfunction. You should consult an HVAC professional for all these issues, as working with gas and fuel can be tricky.

Intermittent banging or booming is most likely caused by expanding and detracting ductwork. This doesn't necessarily need a fix, unless the noise is preventing you from sleeping at night. You’ll need to fortify the ductwork or replace it with round ductwork. Your furnace may make a dry squeal if any belts or bearings are worn. You can fix this yourself for relatively cheap, but a worn belt points to a lack of cleaning and maintenance. You may want to call a professional to inspect for other potential repairs that may be in your future.

If your furnace makes a high-pitched wail, it’s most likely an airflow problem. A dirty air filter and closed or blocked vents are your likely culprits. Rattling means a part is loose or your heat exchanger is cracked. If you hear the rattling right after you turn the furnace on, it's probably the heat exchanger. The rattling is likely the metal coils expanding. If you hear a constant humming, this is likely a motor problem for either the blower or the inducer. Humming sounds from your furnace requires a professional right away.

A furnace is a large machine. Like a car engine, if it’s making a noise that it shouldn’t, this is usually a warning sign before it breaks down entirely. Every time you use your furnace while it needs repairing, you risk damaging it further and racking up a higher repair bill.

Recent reviews for Thornton furnace repair services

363254

Tim is the best! He knows this business. Don't waste your time with anyone else call Tim. Above and beyond!!! Top Rated Service!!

- Mike Malone
3445

Hakim is WONDERFUL !!! He did such a great job painting our living room and dining room. He is courteous and very clean so I didn't have to worry about my new dining room set. He even was able to fix my garage door that had been giving me trouble for year...

- Carol Amlado
35060

I would highly recommend Hakim. I had a long list of items I needed repaired. He completed the work in three hours and even clean up after himself when he was done.

- Claire Lucas
433

Would recommend.

- louise Standish
46182

EC plumbing repaired a broken water main. They were timely, very professional, and did an excellent job. They took time to explain the problem and help with insurance claims. I will use them for all my plumbing needs.

- Joan Huston
57331

Spoke with Jason from EC on Monday about getting a tankless water heater installed. This is a non-trivial upgrade which I was roughly quote for $3200. Decent price as it requires different venting and other changes from a standard water heater. Now it i...

- Alex Thorn
32266

They never responded to my call. Very poor customer service.

- Cathy Filson
32267

They never responded to my call. Very poor customer service.

- Cathy Filson
23815

Technicians are know what they are doing and well trained. Service has been excellent. Best of all---- they actually answer the phone when you call.

- Gary Gibson
240741

I have nothing but great thing to say about Smith and Willis. I have worked with them in the new home field for a long time that have nothing but great things to say about them. Sequoia has ALWAYS taken care if any and all issues that come up and Oscar an...

- Clark Grant Jr
104259

Great employees a young lady installed my furnace and did a great job!

- Michael Schultz
104256

I had A couple come out to install a new furnace and add a ac to my home, they showed up on time and completed the job in five hours and were very helpful with my new thermostat and humidifier!!

- Michael Schultz

All Heating & Furnace Repair Companies in Thornton, CO

Porch Pro Headshot Five Star Cooling
Furnace Repair
Serves Thornton, Colorado
Whether you’re rushing to get out the door in the morning or you and your family are returning to your home at the end of a long day, a comfortable and reliable home is an absolute must for a happy family. That’s why we at Five Star Cooling worked hard to gather the most knowledgeable, versatile, an...Read more about Five Star Cooling
Whether you’re rushing to get out the door in the morning or you and your family are returning to your home at the end of a long day, a comfortable and reliable home is an absolute must for a happy family. That’s why we at Five Star Cooling worked hard to gather the most knowledgeable, versatile, an...Read more about Five Star Cooling
Porch Pro Headshot Complete Plumbing Hvac & Mechanical
Furnace Repair
Serves Thornton, Colorado
(9)
Complete Plumbing Hvac & Mechanical is a fully licensed and insured plumbing company located in Denver, servicing all your gas, water and sewer needs. You can count on us for professional advice, top quality work and comprehensive service - even after your project is complete. Our phones are staffe...Read more about Complete Plumbing Hvac & Mechanical
Complete Plumbing Hvac & Mechanical is a fully licensed and insured plumbing company located in Denver, servicing all your gas, water and sewer needs. You can count on us for professional advice, top quality work and comprehensive service - even after your project is complete. Our phones are staffe...Read more about Complete Plumbing Hvac & Mechanical
Porch Pro Headshot Handy Home Services
Furnace Repair
Serves Thornton, Colorado
(13)
Handy Home Services in Lakewood is a 5-star-rated window repair company with a variety of service offerings for you to take advantage of.
Handy Home Services in Lakewood is a 5-star-rated window repair company with a variety of service offerings for you to take advantage of.
Porch Pro Headshot All Phase Appliance Company
Furnace Repair
Serves Thornton, Colorado
(43)
"Manual, the owner of this company, has the highest integrity and expertise. I bought my new furnace from him . He was very helpful at recommending the best options for my needs. The installation went smoothly. He did a zillion extra little things that needed to be done which were not technically pa...Read more about All Phase Appliance Company
"Manual, the owner of this company, has the highest integrity and expertise. I bought my new furnace from him . He was very helpful at recommending the best options for my needs. The installation went smoothly. He did a zillion extra little things that needed to be done which were not technically pa...Read more about All Phase Appliance Company
Porch Pro Headshot Cornerstone Mechanical Inc.
Furnace Repair
Serves Thornton, Colorado
(30)
Cornerstone Mechanical gives excellent customer service and superior craftsmanship. Let our family take care of your family.
Cornerstone Mechanical gives excellent customer service and superior craftsmanship. Let our family take care of your family.
Porch Pro Headshot D&L Heating & Air Conditioning
Furnace Repair
Serves Thornton, Colorado
(9)
D&L is a small locally owned and operated, residential and commercial heating and air conditioning company. We started in 2004 and strive to be the best at an affordable cost, saving you money in energy and maintaining your comfort. We have over 35 years experience with residential and commercial H...Read more about D&L Heating & Air Conditioning
D&L is a small locally owned and operated, residential and commercial heating and air conditioning company. We started in 2004 and strive to be the best at an affordable cost, saving you money in energy and maintaining your comfort. We have over 35 years experience with residential and commercial H...Read more about D&L Heating & Air Conditioning
Porch Pro Headshot Control Temp
Furnace Repair
Serves Thornton, Colorado
Control Temp is a HVAC company located in the Denver Metro area. We have been in business since 1983. We are a full service heating and Cooling company.
Control Temp is a HVAC company located in the Denver Metro area. We have been in business since 1983. We are a full service heating and Cooling company.
Porch Pro Headshot All weather HVAC /Peace of Mind
Furnace Repair
Serves Thornton, Colorado
(45)
All Weather HVAC, local family owned heating and cooling company. We install, service, and maintain all residential heating and cooling systems.
All Weather HVAC, local family owned heating and cooling company. We install, service, and maintain all residential heating and cooling systems.
Porch Pro Headshot Hope Heating & Air
Furnace Repair
Serves Thornton, Colorado
(1)
"We sold our house quickly and needed the furnace cleaned. This company came out that same day to help me out. The job was done in a professional manner and the technician was very knowledgeable. Thank you again for a job well done!"
"We sold our house quickly and needed the furnace cleaned. This company came out that same day to help me out. The job was done in a professional manner and the technician was very knowledgeable. Thank you again for a job well done!"
Porch Pro Headshot Accuracy Heating and Cooling
Furnace Repair
Serves Thornton, Colorado
Accuracy is a small company looking to take care of as many customer needs as possible. We love being smaller because we get to know our customers and no matter how long it takes we do everything possible to make sure every need is met.
Accuracy is a small company looking to take care of as many customer needs as possible. We love being smaller because we get to know our customers and no matter how long it takes we do everything possible to make sure every need is met.
Porch Pro Headshot HEATMISER LLC
Furnace Repair
Serves Thornton, Colorado
Porch Pro Headshot Core Mechanical Company
Furnace Repair
Serves Thornton, Colorado
(2)
We install, repair, replace, maintain any and all brands of equipment.
We install, repair, replace, maintain any and all brands of equipment.
Porch Pro Headshot Cordova Heating & Cooling, LLC
Furnace Repair
Serves Thornton, Colorado
(11)
Porch Pro Headshot Marked Plumbing LLC
Furnace Repair
Serves Thornton, Colorado
Marked Plumbing specialized in friendly, honest residential and commercial plumbing in the Denver metro area. Give us a call for an estimate!
Marked Plumbing specialized in friendly, honest residential and commercial plumbing in the Denver metro area. Give us a call for an estimate!

Latest projects near Thornton

Recent projects booked on Porch
Commerce City 80022
Furnace Repair
Start Date
Within 48 hours
Furnace fuel source
Natural gas
Furnace problems
Makes loud or unusual noises, System keeps cycling on and off, Low or no heat in all areas
When problems started
Less than one week ago
Furnace age
Less than 5 years old
Thornton 80602
Furnace Repair
Start Date
Within 48 hours
Type of project
Repair, maintenance or cleaning
Repair, maintenance or cleaning project
Heating and cooling system repair
Item to repair
Furnace
Furnace fuel source
Natural gas
Furnace problems
Low or no heat in all areas
When problems started
Less than one week ago
Furnace age
10-15 years old