Top 10 furnace repair services in Longmont, CO

Porch Pro Headshot One Hour Heating & Air Conditioning - Loveland
Furnace Repair
Serves Longmont, Colorado
(1,351)
One Hour Heating and Air Conditioning's highly skilled, certified, background checked and drug tested technicians have cared for Northern Colorado's indoor living quality for over 20 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 Northern Colorado's indoor living quality for over 20 years. We're ready 24/7 to solve minor or major issues so you can live comfortably.
Porch Pro Headshot NOW HEATING & AIR
Furnace Repair
Serves Longmont, Colorado
(1,099)
"AC went out at one of the hottest days. They had a cancellation and fit me in right away. The technician diagnosed my issue and let me know what I needed to get it fixed. Had my ac fixed the next day and used a coupon off their website. Seriously got lucky!"
"AC went out at one of the hottest days. They had a cancellation and fit me in right away. The technician diagnosed my issue and let me know what I needed to get it fixed. Had my ac fixed the next day and used a coupon off their website. Seriously got lucky!"
Porch Pro Headshot Fort Collins Heating & Air Conditioning
Furnace Repair
Serves Longmont, Colorado
(836)
Fort Collins Heating & Air Conditioning provide heating services and air conditioning services to Fort Collins, CO or Loveland, CO. Give us a call to schedule an installation or maintenance appointment in Fort Collins.
Fort Collins Heating & Air Conditioning provide heating services and air conditioning services to Fort Collins, CO or Loveland, CO. Give us a call to schedule an installation or maintenance appointment in Fort Collins.
Porch Pro Headshot Ken's Mechanical
Furnace Repair
Serves Longmont, Colorado
(247)
Ken's Mechanical is a family owned and operated business serving the Arvada community. We want to make sure we're best serving our neighborhood, which is why we provide flexible, around the clock service and great prices to get the job done. We are also insured and licensed. Call today!
Ken's Mechanical is a family owned and operated business serving the Arvada community. We want to make sure we're best serving our neighborhood, which is why we provide flexible, around the clock service and great prices to get the job done. We are also insured and licensed. Call today!
Porch Pro Headshot Groulx Mechanical Heating and Cooling inc
Furnace Repair
Serves Longmont, 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 D&D Heating & Air
Furnace Repair
Serves Longmont, Colorado
(13)
"D&D Heating did an install of new baseboard heaters and a boiler in our home and I couldn't be happier. Dan was fantastic! He knew exactly what needed to be done and did a great job on it. I highly recommend his company!"
"D&D Heating did an install of new baseboard heaters and a boiler in our home and I couldn't be happier. Dan was fantastic! He knew exactly what needed to be done and did a great job on it. I highly recommend his company!"
Porch Pro Headshot BCIT Mechanical
Furnace Repair
Serves Longmont, Colorado
(30)
"Ryan and his crew did an exceptional job! We did a full renovation on our house in Commerce City and ended up replacing all our HVAC ducting and replacing our furnace with a high efficiency unit. Ryan came out and gave us a very competitive quote that was professional and comprehensive. The crew th...Read more about BCIT Mechanical
"Ryan and his crew did an exceptional job! We did a full renovation on our house in Commerce City and ended up replacing all our HVAC ducting and replacing our furnace with a high efficiency unit. Ryan came out and gave us a very competitive quote that was professional and comprehensive. The crew th...Read more about BCIT Mechanical
Porch Pro Headshot EC Plumbing LLC
Furnace Repair
Serves Longmont, Colorado
(8)
"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. "
"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. "
Porch Pro Headshot Rabbit Heating & Air LLC
Furnace Repair
Serves Longmont, 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
Porch Pro Headshot Five Star Cooling
Furnace Repair
Serves Longmont, 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

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 Longmont furnace repair services

155240

Wyatt came to our Home to clean air ducts,vents, dryer exhaust. He knew his job well, was prompt,was strong, and friendly. We are very pleased at the job he did, and will call this company for future work.

- Timothy McTearnen
326405

They promised to install new furnace within a week. Took down payment on date of agreement. Waiting weeks for install and after multiples excuses, I asked for a refund. They have been promising me a refund for weeks. Never do business with these people

- jay schaeffer
280565

thank you so much first choice they are the best they came out and fix my air conditioner the same day price was very reasonable very personal I would call them again I tell my friends and family if they have problems call first choice

- donna rapp
61551

Had a tech come out for a special I heard on the radio. He checked my AC and didn't try to sell me on a new system like the last company did. Quick and painless process. So far so good..

- Patty Carlson
61341

Now originally came out two weeks ago to check out my Air Conditioner. They diagnosed it quickly and let me know it was a simple fix. The Technician didn't try to oversell anything and I really appreciate that. We later decided we wanted to replace the ...

- Danielle Williams
60627

Technician Marco, was INCREDIBLE! I had originally had my ducts cleaned from another company (deal on groupon) and found that it wasn't a real duct cleaning. I had spoke to one of their customer support staff who was friendly and explained the whole proce...

- Insan Sombolinggi
80730

It started by Now Heating & Air called me for a furnace tune up special. They came out and serviced my 2 furnaces, and did a very professional job, they were very thorough, and actually showed me pictures before and after, the tech was clean, clean unifor...

- Denise R.
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
347147

These scumbags charged 20,876 to install a furnace in a 1300 sq ft home to my elderly parents. Now they will not answer calls to the family or provide a detailed price list of services provided. Purely scumbag thieves.

- Ron Dailey
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
51098

Competent. Clean. Polite. Price Competitive. Need I say more?

- Fred Garcia

All Heating & Furnace Repair Companies in Longmont, CO

Porch Pro Headshot Viking Mechanical Services, LLC
Furnace Repair
Serves Longmont, Colorado
(27)
Viking Mechanical Services, LLC provides customers in Boulder, Louisville, Broomfield, Longmont, Loveland and the neighboring areas affordable residential and commercial heating, cooling, and plumbing services to include maintenance, repairs, and installation of boilers, furnaces, air conditioners, ...Read more about Viking Mechanical Services, LLC
Viking Mechanical Services, LLC provides customers in Boulder, Louisville, Broomfield, Longmont, Loveland and the neighboring areas affordable residential and commercial heating, cooling, and plumbing services to include maintenance, repairs, and installation of boilers, furnaces, air conditioners, ...Read more about Viking Mechanical Services, LLC
Porch Pro Headshot Northern Colorado Energy Solutions LLC
Furnace Repair
Serves Longmont, Colorado
(24)
Experienced. Responsive. Professional. 100% Focused on Your Needs and Your Budget. NoCO Energy Solutions is a partnership between Nate Gagliano, Tim Hagar and you. Our goal is to get you the right HVAC system for your health, savings and lifestyle or business needs. Our products, services and recom...Read more about Northern Colorado Energy Solutions LLC
Experienced. Responsive. Professional. 100% Focused on Your Needs and Your Budget. NoCO Energy Solutions is a partnership between Nate Gagliano, Tim Hagar and you. Our goal is to get you the right HVAC system for your health, savings and lifestyle or business needs. Our products, services and recom...Read more about Northern Colorado Energy Solutions LLC
Porch Pro Headshot K & A Plumbing, Inc.
Furnace Repair
Serves Longmont, Colorado
When you need an excellent Arvada plumbing company to ensure that your home is free from leaks, call K & A Plumbing Inc. We are committed to meticulous and timely service. Here at K & A Plumbing Inc. we believe in providing the best quality and service at a reasonable price. It is our goal to make ...Read more about K & A Plumbing, Inc.
When you need an excellent Arvada plumbing company to ensure that your home is free from leaks, call K & A Plumbing Inc. We are committed to meticulous and timely service. Here at K & A Plumbing Inc. we believe in providing the best quality and service at a reasonable price. It is our goal to make ...Read more about K & A Plumbing, Inc.
Porch Pro Headshot A Moonlight Heating Co
Furnace Repair
Serves Longmont, Colorado
Our commitment to quality, customer service, and timely job completion is our promise to our customers. We have built many strong relationships because of our work ethic and we will undoubtedly continue to do so! Call today! A Moonlight Heating Co offers complete heating and cooling sales, service ...Read more about A Moonlight Heating Co
Our commitment to quality, customer service, and timely job completion is our promise to our customers. We have built many strong relationships because of our work ethic and we will undoubtedly continue to do so! Call today! A Moonlight Heating Co offers complete heating and cooling sales, service ...Read more about A Moonlight Heating Co
Porch Pro Headshot Doc's Super Vac
Furnace Repair
Serves Longmont, Colorado
Providing residential to commercial air duct, dryer vent and coil cleaning in Northern Colorado since 1991. NADCA certified, owner operated. We also provide duct lining restoration.
Providing residential to commercial air duct, dryer vent and coil cleaning in Northern Colorado since 1991. NADCA certified, owner operated. We also provide duct lining restoration.
Porch Pro Headshot First Choice Mechanicals llc
Furnace Repair
Serves Longmont, Colorado
(23)
Based in Lakewood, First Choice Mechanicals LLC is a top-notch HVAC contractor that offers maintenance and installation of central air conditioners, RTU, furnaces, and heat pumps. If you're looking to install a HVAC system, contact us through our booking form. Before the start of winter.
Based in Lakewood, First Choice Mechanicals LLC is a top-notch HVAC contractor that offers maintenance and installation of central air conditioners, RTU, furnaces, and heat pumps. If you're looking to install a HVAC system, contact us through our booking form. Before the start of winter.
Porch Pro Headshot All weather HVAC /Peace of Mind
Furnace Repair
Serves Longmont, 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 Prime Performance Mechanical
Furnace Repair
Serves Longmont, Colorado
(36)
I have been in the hvac and plumbing trade for a little over 15 years. I am professional and do neat clean work. I do have references and I am also insured and can pull permits. I offer many services. My company is a owner owned and operated company so you will get better prices and better service t...Read more about Prime Performance Mechanical
I have been in the hvac and plumbing trade for a little over 15 years. I am professional and do neat clean work. I do have references and I am also insured and can pull permits. I offer many services. My company is a owner owned and operated company so you will get better prices and better service t...Read more about Prime Performance Mechanical
Porch Pro Headshot Jack Micek Heating & Cooling
Furnace Repair
Serves Longmont, Colorado
(14)
Specializing on repair, replacement of all types of heating, air conditioning, boilers, water heaters and ventilation. We do new and remodel work. We also do residential and commercial work. We offer free estimates. We take all credit cards.
Specializing on repair, replacement of all types of heating, air conditioning, boilers, water heaters and ventilation. We do new and remodel work. We also do residential and commercial work. We offer free estimates. We take all credit cards.
Porch Pro Headshot Aire Serv Heating & Air Conditioning of Boulder
Furnace Repair
Serves Longmont, Colorado
Is your Boulder or Colorado County heating and cooling system in need of a little attention? From repair and replacement to preventive maintenance, air quality, and more, Aire Serv of Boulder is focused on you. We are locally owned and operated by DDA Heating and Air, so we're familiar with your exp...Read more about Aire Serv Heating & Air Conditioning of Boulder
Is your Boulder or Colorado County heating and cooling system in need of a little attention? From repair and replacement to preventive maintenance, air quality, and more, Aire Serv of Boulder is focused on you. We are locally owned and operated by DDA Heating and Air, so we're familiar with your exp...Read more about Aire Serv Heating & Air Conditioning of Boulder
Porch Pro Headshot Bee's Air Duct Cleaning LLC
Furnace Repair
Serves Longmont, Colorado
Bee's Air Duct Cleaning is a family run company on Longmont, Coloraodo. We specialize in air duct cleaning and HVAC Maintenance. With Bee's you can count on a thorough cleaning, and tune-up from an HVAC certified technician. We guarantee quality work as well as up front and honest pricing.
Bee's Air Duct Cleaning is a family run company on Longmont, Coloraodo. We specialize in air duct cleaning and HVAC Maintenance. With Bee's you can count on a thorough cleaning, and tune-up from an HVAC certified technician. We guarantee quality work as well as up front and honest pricing.
Porch Pro Headshot Cordova Heating & Cooling, LLC
Furnace Repair
Serves Longmont, Colorado
(11)
Porch Pro Headshot Apollo Air Conditioning & Heating
Furnace Repair
Serves Longmont, Colorado
Apollo Air Conditioning and Heating is your #1 source for all your HVAC needs! Professionals that take pride in their work, Apollo is committed to 100% satisfaction. So whether you need an air conditioner tune up, or a whole new heating system, Apollo can help. Call today!
Apollo Air Conditioning and Heating is your #1 source for all your HVAC needs! Professionals that take pride in their work, Apollo is committed to 100% satisfaction. So whether you need an air conditioner tune up, or a whole new heating system, Apollo can help. Call today!

Latest projects near Longmont

Recent projects booked on Porch
Longmont 80504
Furnace Repair
Start Date
I'm flexible
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 one area
When problems started
A couple of weeks ago
Furnace age
More than 20 years old