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)
"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 uniform and slipped on his shoe covers while going...Read more about NOW HEATING & AIR
"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 uniform and slipped on his shoe covers while going...Read more about NOW HEATING & AIR
Porch Pro Headshot One Hour Heating & Air Conditioning - Denver
Furnace Repair
Serves Longmont, 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 Aspen Creek Heating & Air, llc
Furnace Repair
Serves Longmont, Colorado
(73)
"I had Aspen Creek Heating and Air out to work on my air conditioning system. The technician, Mike, corrected the problem with my system, he was very knowledgeable and very courteous, and explained everything he was doing in detail. I am very happy with his work. I am also very happy with the off...Read more about Aspen Creek Heating & Air, llc
"I had Aspen Creek Heating and Air out to work on my air conditioning system. The technician, Mike, corrected the problem with my system, he was very knowledgeable and very courteous, and explained everything he was doing in detail. I am very happy with his work. I am also very happy with the off...Read more about Aspen Creek Heating & Air, llc
Porch Pro Headshot Mr. Cool Heating and Cooling
Furnace Repair
Serves Longmont, 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 Colorado Proud Heating and Cooling
Furnace Repair
Serves Longmont, Colorado
(39)
Colorado Proud Heating and Cooling is a locally owned, fully licensed and insured HVAC contractor that specializes in Furnace and AC Repair. We are Proud to provide service the front range of Colorado. When you call Colorado Proud Heating and Cooling we are proud to send out only the highest qual...Read more about Colorado Proud Heating and Cooling
Colorado Proud Heating and Cooling is a locally owned, fully licensed and insured HVAC contractor that specializes in Furnace and AC Repair. We are Proud to provide service the front range of Colorado. When you call Colorado Proud Heating and Cooling we are proud to send out only the highest qual...Read more about Colorado Proud Heating and Cooling
Porch Pro Headshot D&D Heating & Air
Furnace Repair
Serves Longmont, Colorado
(13)
"Needed my A.C. repaired; A coil was damaged; Dan replaced my A coil above my furnace. Dan installed quality work; professional in his knowledge of all aspects of heating and air conditioning; hard worker in getting the job done; meeting your timely needs; a very good contractor; honest and fair pri...Read more about D&D Heating & Air
"Needed my A.C. repaired; A coil was damaged; Dan replaced my A coil above my furnace. Dan installed quality work; professional in his knowledge of all aspects of heating and air conditioning; hard worker in getting the job done; meeting your timely needs; a very good contractor; honest and fair pri...Read more about D&D Heating & Air
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 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 Mr. Appliance of Arvada
Furnace Repair
Serves Longmont, Colorado
(120)
Appliance Repair in West Denver
Appliance Repair in West Denver

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

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
62991

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 luck...

- Janet Ackerson
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
32266

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

- Cathy Filson
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
94769

Dan arrived at exactly noon, the appointment time set up. He was professional and friendly, and gladly explained every step of his actions. My AC unit was back up and running in no time, and he had some helpful tips about how to keep it running efficient...

- Terri Jones
154602

New Year's Day 2019, my husband and I woke up to a freezing home. Our furnace had stopped working. We knew we couldn't fix it but we were terrified of the cost to have a professional come to our home. Our terror turned to relief when Dan came to our ho...

- Alyssa Philpott
262068

Hans, Lachelle and team are awesome. They are always very responsive, professional and patient. They take the time to explain and listen to questions. Would recommend them highly!

- Jim Warfield
51098

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

- Fred Garcia

All Heating & Furnace Repair Companies in Longmont, CO

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 All Phase Appliance Company
Furnace Repair
Serves Longmont, 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 Longmont, 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 Control Temp
Furnace Repair
Serves Longmont, 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 Vertical Heating & Cooling LLC
Furnace Repair
Serves Longmont, Colorado
(43)
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 Constant Comfort Climate Control
Furnace Repair
Serves Longmont, Colorado
Our company is a small 2 man crew that is able to provide you with excellent small company service. We are very knowledgeable in the field and are able to provide you with very competitive rates. I enjoy interacting with our various clients each day and solving their climate situation in an efficie...Read more about Constant Comfort Climate Control
Our company is a small 2 man crew that is able to provide you with excellent small company service. We are very knowledgeable in the field and are able to provide you with very competitive rates. I enjoy interacting with our various clients each day and solving their climate situation in an efficie...Read more about Constant Comfort Climate Control
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 HEATMISER LLC
Furnace Repair
Serves Longmont, Colorado
Porch Pro Headshot Core Mechanical Company
Furnace Repair
Serves Longmont, 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 WyCo HVAC
Furnace Repair
Serves Longmont, Colorado
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!
Porch Pro Headshot A To Z Heating & Cooling
Furnace Repair
Serves Longmont, Colorado
Porch Pro Headshot Boulder Emergency HVAC Master
Furnace Repair
Serves Longmont, Colorado

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