Top 10 furnace repair services in Diamond Bar, CA

Porch Pro Headshot Magnolia Heating and Cooling
Furnace Repair
Serves Diamond Bar, California
(1,723)
We are a family owned and operated business serving the Inland Empire area since 1951. Big enough to offer competitive pricing and services, small enough to put customer satisfaction as our No. 1 priority. NO FALSE PROMISES. We're just a neighborhood business asking for the opportunity to show the...Read more about Magnolia Heating and Cooling
We are a family owned and operated business serving the Inland Empire area since 1951. Big enough to offer competitive pricing and services, small enough to put customer satisfaction as our No. 1 priority. NO FALSE PROMISES. We're just a neighborhood business asking for the opportunity to show the...Read more about Magnolia Heating and Cooling
Porch Pro Headshot Relaxed Heating and Air Inc
Furnace Repair
Serves Diamond Bar, California
(645)
"I was out of town when the tenant called and told me that the heater is out. I called Relaxed Heating and Air and within few hours they were on the roof troubleshooting the package unit. Their dispatch coordinated directly with tenant, so I could go back to enjoying my vacation. I have been usi...Read more about Relaxed Heating and Air Inc
"I was out of town when the tenant called and told me that the heater is out. I called Relaxed Heating and Air and within few hours they were on the roof troubleshooting the package unit. Their dispatch coordinated directly with tenant, so I could go back to enjoying my vacation. I have been usi...Read more about Relaxed Heating and Air Inc
Porch Pro Headshot Guaranteed Quality Heating and Air
Furnace Repair
Serves Diamond Bar, California
(686)
We provide heating and air conditioning solutions at the best prices for all of Orange County. We are an Award Winning Amana / Goodman Dealer. We are also Goodman's #1 Orange County volume dealer. We provide AC Repair & AC Replacement and Furnace Repair & Furnace Replacement for all of Costa Mes...Read more about Guaranteed Quality Heating and Air
We provide heating and air conditioning solutions at the best prices for all of Orange County. We are an Award Winning Amana / Goodman Dealer. We are also Goodman's #1 Orange County volume dealer. We provide AC Repair & AC Replacement and Furnace Repair & Furnace Replacement for all of Costa Mes...Read more about Guaranteed Quality Heating and Air
Porch Pro Headshot Air Concepts
Furnace Repair
Serves Diamond Bar, California
(367)
Porch Pro Headshot Champion Aire Heating & Air Conditioning
Furnace Repair
Serves Diamond Bar, California
(218)
Champion Aire has been a trusted and a professional service HVAC contractor in the HVAC industry ,Experience and expertise both working Commercial and Residential for all air conditioning and heating repairs, installations, maintenance, indoor air quality, duct work, ventilation and filtration need...Read more about Champion Aire Heating & Air Conditioning
Champion Aire has been a trusted and a professional service HVAC contractor in the HVAC industry ,Experience and expertise both working Commercial and Residential for all air conditioning and heating repairs, installations, maintenance, indoor air quality, duct work, ventilation and filtration need...Read more about Champion Aire Heating & Air Conditioning
Porch Pro Headshot Mor Air, Inc.
Furnace Repair
Serves Diamond Bar, California
(119)
"After meeting with a few of the big box HVAC companies, and having to beg them to leave my home after giving an overpriced bid, I luckily met Mario of Mor Air. Mario was courteous, knowledgeable, and best of all he listened to my wants and needs and adapted my AC system to my specifications. The ...Read more about Mor Air, Inc.
100% response rate
"After meeting with a few of the big box HVAC companies, and having to beg them to leave my home after giving an overpriced bid, I luckily met Mario of Mor Air. Mario was courteous, knowledgeable, and best of all he listened to my wants and needs and adapted my AC system to my specifications. The ...Read more about Mor Air, Inc.
Porch Pro Headshot Sheldon's Heating And Air
Furnace Repair
Serves Diamond Bar, California
Sheldon's Heating & Air Conditioning, Inc. is the Riverside, CA heating and air conditioning company you can rely on when you need any heating or air conditioning installation, repair or maintenance services. We also offer exceptional indoor air quality products and services to help you breathe the ...Read more about Sheldon's Heating And Air
Sheldon's Heating & Air Conditioning, Inc. is the Riverside, CA heating and air conditioning company you can rely on when you need any heating or air conditioning installation, repair or maintenance services. We also offer exceptional indoor air quality products and services to help you breathe the ...Read more about Sheldon's Heating And Air
Porch Pro Headshot Fisher Heating & Air Conditioning Inc
Furnace Repair
Serves Diamond Bar, California
(23)
"They are professional and do an awesome job! We had a problem with a certain part making a weird noise and they can out several times to make sure it was taken care of and that we were happy with the end result. Out heating and air conditioning work perfectly. Thanks Fisher Air. "
"They are professional and do an awesome job! We had a problem with a certain part making a weird noise and they can out several times to make sure it was taken care of and that we were happy with the end result. Out heating and air conditioning work perfectly. Thanks Fisher Air. "
Porch Pro Headshot 20th Century Air Inc.
Furnace Repair
Serves Diamond Bar, California
(16)
20th Century Air, Inc. - Heating and Air Conditioning in Orange County "21st Century Products with 20th Century Service" We are a family owned and operated company specializing in heating and air conditioning installation, replacements, maintenance, and repair in Orange, LA, and Riverside Counties...Read more about 20th Century Air Inc.
20th Century Air, Inc. - Heating and Air Conditioning in Orange County "21st Century Products with 20th Century Service" We are a family owned and operated company specializing in heating and air conditioning installation, replacements, maintenance, and repair in Orange, LA, and Riverside Counties...Read more about 20th Century Air Inc.
Porch Pro Headshot ALL TEMP HEATING & COOLING
Furnace Repair
Serves Diamond Bar, California
(10)
"AllTemp Heating and Cooling knew their way around our Servel Absorbtion AC System. We called about a dozen companies before we found Mel and Fernando. They were very knowledgable about the operation and maintenance of our Absorbtion System. Tempertures were hovering in the high 100 degree plus m...Read more about ALL TEMP HEATING & COOLING
"AllTemp Heating and Cooling knew their way around our Servel Absorbtion AC System. We called about a dozen companies before we found Mel and Fernando. They were very knowledgable about the operation and maintenance of our Absorbtion System. Tempertures were hovering in the high 100 degree plus m...Read more about ALL TEMP HEATING & 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 Diamond Bar furnace repair services

39881

On Thursday I requested assistance with my Water Heater. The guy came out and looked at my pilot light and said it was out. He charged me $90 to assess the situation and then said he re-lit the pilot light and all I needed to do was wait 30 minutes to a...

- Michael Carpenter
90575

Beware Beware Beware this is a rip off off company. The technician tried to rep me off. he wanted to charge $ 600 for an a/c system recharge with 4 pound of Freon. he quoted me a price of $ 125 per pound of Freon, he said they have a minimum Freon amount...

- SEAN AddA
518141

Great Company to work with. and I would absolutely recommend to any homeowner or business.

- Lindsay Wright
83272

Our AC was giving us some problems and we checked on Google. We found out Guaranteed Quality Heating and Air through Google search and call them. The person who answered the phone was James and he gave us various options we had. Next day, Steve came...

- Rakesh Kumar
83274

Great company with sincere employees. Thank you Tony and Jannette.

- Dave W
33037

Horrible customer service! Unreliable, didn't call when they couldn't come..... Not reliable at all!!

- Barbara Winchel
80655

They are the BEST!

- Brenda Smith
111814

Great attitude and punctual. Thanks John!

- Travis Mcgregor
80654

They are the best!

- Brenda Smith
405865

This company need to be canceled! I tried calling and they will not let you through to manament and then the lady on the phone threatened me because I wasn't being nice enough! She wouldn't hand me over to a manager or the owner, just threatened me and h...

- Mike Pokemon
405864

This company need to be canceled! I tried calling and they will not let you through to manament and then the lady on the phone threatened me because I wasn't being nice enough! She wouldn't hand me over to a manager or the owner, just threatened me and h...

- Mike Pokemon

All Heating & Furnace Repair Companies in Diamond Bar, CA

Porch Pro Headshot Supreme Cooling Heating and Air Conditioning
Furnace Repair
Serves Diamond Bar, California
(4)
"They were phenomenal. Supreme came through and figured out what the problem and repaired it when 4 ither companjes couldnt do the job. And they showed up in a timely matter with a 30 min prior to show up courtesy call.i would highly recommend supreme to all my family and friends."
"They were phenomenal. Supreme came through and figured out what the problem and repaired it when 4 ither companjes couldnt do the job. And they showed up in a timely matter with a 30 min prior to show up courtesy call.i would highly recommend supreme to all my family and friends."
Porch Pro Headshot Sturges Heating and Air Conditioning
Furnace Repair
Serves Diamond Bar, California
(68)
When it comes to indoor comfort, you need the right air conditioning and heating systems to fit your home or building size and budget. Our HVAC solutions are built with a variety of the best products and superior services. From designing, selecting, and installing an HVAC system, air conditioner, or...Read more about Sturges Heating and Air Conditioning
When it comes to indoor comfort, you need the right air conditioning and heating systems to fit your home or building size and budget. Our HVAC solutions are built with a variety of the best products and superior services. From designing, selecting, and installing an HVAC system, air conditioner, or...Read more about Sturges Heating and Air Conditioning
Porch Pro Headshot Care One Plumbing
Furnace Repair
Serves Diamond Bar, California
(48)
Care One Plumbing is Locally Owned & Operated Family Business, that specializes in Service & Repair Plumbing. With over 30 years experience in Residential, Commercial, Historical, Sewer & Drain Cleaning, Medical, Backflow Testing, we have the Plumber for your needs. We Serve the Inland Empire, San G...Read more about Care One Plumbing
Care One Plumbing is Locally Owned & Operated Family Business, that specializes in Service & Repair Plumbing. With over 30 years experience in Residential, Commercial, Historical, Sewer & Drain Cleaning, Medical, Backflow Testing, we have the Plumber for your needs. We Serve the Inland Empire, San G...Read more about Care One Plumbing
Porch Pro Headshot Crestline Refrigeration
Furnace Repair
Serves Diamond Bar, California
(3)
Crestline Refrigeration is your premier RESIDENTIAL air conditioning & heating service provider in Southern California. We also provide Refrigeration, air conditioning, heating and ventilation service for COMMERCIAL and INDUSTRIAL customers. We offer PROFESSIONAL AFFORDABLE installation, repair an...Read more about Crestline Refrigeration
Crestline Refrigeration is your premier RESIDENTIAL air conditioning & heating service provider in Southern California. We also provide Refrigeration, air conditioning, heating and ventilation service for COMMERCIAL and INDUSTRIAL customers. We offer PROFESSIONAL AFFORDABLE installation, repair an...Read more about Crestline Refrigeration
Porch Pro Headshot Derek Beyler Construction
Furnace Repair
Serves Diamond Bar, California
Whether you want to design and build the custom home of your dreams or just need a room repainted, we have the experience, expertise, and desire to make your dreams come true! We help to organize your custom home vision or design the kitchen and bathroom you've been thinking about by managing your p...Read more about Derek Beyler Construction
Whether you want to design and build the custom home of your dreams or just need a room repainted, we have the experience, expertise, and desire to make your dreams come true! We help to organize your custom home vision or design the kitchen and bathroom you've been thinking about by managing your p...Read more about Derek Beyler Construction
Porch Pro Headshot Daniels Heating & Air Conditioning
Furnace Repair
Serves Diamond Bar, California
Porch Pro Headshot Same Day Services Inc
Furnace Repair
Serves Diamond Bar, California
(1)
Same Day Services is a general contractor based out of Riverside. They provide design build services, bathroom remodeling, exterior remodeling and more. Same Day Services is accredited by the United States Environmental Protection Agency. They are also accredited by the Better Business Bureau.
Same Day Services is a general contractor based out of Riverside. They provide design build services, bathroom remodeling, exterior remodeling and more. Same Day Services is accredited by the United States Environmental Protection Agency. They are also accredited by the Better Business Bureau.
Porch Pro Headshot Engineered Comfort
Furnace Repair
Serves Diamond Bar, California
(8)
Porch Pro Headshot Xpress Heating & Air
Furnace Repair
Serves Diamond Bar, California
We pride our company on reliability, great communication, integrity and quality work. We are experts in our HVAC work and will do our best to keep you as educated as we can on your particular task or project. We look forward to working with you.
We pride our company on reliability, great communication, integrity and quality work. We are experts in our HVAC work and will do our best to keep you as educated as we can on your particular task or project. We look forward to working with you.
Porch Pro Headshot U.S. Air Conditioning & Heating
Furnace Repair
Serves Diamond Bar, California
Competitive, Reliable, Quality Work at Affordable Price We Specialize in Providing Expert Work on Air Conditioning and Heating Repairs, Installations, and Service Call the Professionals Direct (818) 207-1245 Toll Free (877) 872-4777 Email us at: usair@usa.com Fast Reliable Same Day Service Local a...Read more about U.S. Air Conditioning & Heating
Competitive, Reliable, Quality Work at Affordable Price We Specialize in Providing Expert Work on Air Conditioning and Heating Repairs, Installations, and Service Call the Professionals Direct (818) 207-1245 Toll Free (877) 872-4777 Email us at: usair@usa.com Fast Reliable Same Day Service Local a...Read more about U.S. Air Conditioning & Heating
Porch Pro Headshot Calwest Controls Inc
Furnace Repair
Serves Diamond Bar, California
CalWest Controls is a leading provider of advanced building systems for a wide variety of industries and buildings. We specialize in design, installation and service of energy managerment control systems for HVAC in commercial buildings, colleges, schools, retail, government buildings, hotels, hospi...Read more about Calwest Controls Inc
CalWest Controls is a leading provider of advanced building systems for a wide variety of industries and buildings. We specialize in design, installation and service of energy managerment control systems for HVAC in commercial buildings, colleges, schools, retail, government buildings, hotels, hospi...Read more about Calwest Controls Inc
Porch Pro Headshot AirPros Heating, Air, and Refrigeration
Furnace Repair
Serves Diamond Bar, California
Porch Pro Headshot Xaviers Heating and Air
Furnace Repair
Serves Diamond Bar, California
Xavier's Heating and Air has been a family run business since 2008 specializing in installation and service for heating and air. We are not limited to HVAC work, but it is what we are known for. At Xavier's Heating and Air we standby our work and strive to give our homeowners the best experience. ...Read more about Xaviers Heating and Air
Xavier's Heating and Air has been a family run business since 2008 specializing in installation and service for heating and air. We are not limited to HVAC work, but it is what we are known for. At Xavier's Heating and Air we standby our work and strive to give our homeowners the best experience. ...Read more about Xaviers Heating and Air
Porch Pro Headshot B & W FURNACE SERVICE INC
Furnace Repair
Serves Diamond Bar, California

Latest projects near Diamond Bar

Recent projects booked on Porch
Pomona 91766
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
It won't turn on or off
When problems started
Less than one week ago
Furnace age
More than 20 years old