How often should I service my HVAC?

• <div><p>Your HVAC manufacturer will give you instructions on how often you should service your system. Have your unit professionally serviced at least once a year when in doubt. </p><p>Heat pump systems are different because they provide heating and cooling solutions for your home. In this case, you should have it serviced at least twice a year.</p></div>

Do you need backup heat with geothermal?

• <div><p>If a geothermal heat pump is installed correctly, then you shouldn’t have to worry about having a backup heat source such as a <a href="https://www.angi.com/articles/furnace-and-heating-basics.htm">furnace</a> or oil boiler. However, there are geothermal systems installed that include a backup in case the heat pump fails due to extreme cold. This is simply a backup heat pump you’ll likely never need and not an alternative heat source.</p></div>

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TRUSTED BY DENAIR, CA HOMEOWNERS

4.4
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Verified Reviews for Heating Oil Service pros in Denair, CA

*The Angi rating for Heating Oil Service companies in Denair, CA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Heating Oil Service needs.

*The HomeAdvisor rating for Heating Oil Service companies in Denair, CA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Heating Oil Service needs.

Last update on October 21, 2025

Reviewed in February 2025
The service technician Lyle, who came out to assess the water heater problem. He was very truthful, and very knowledgeable.
Discount Plumbing, Heating & Air
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Reviewed in November 2024
Miguel and his team were great! They were able to replace a water heater same day , and now my tenants can enjoy their holiday with hot water! I will hire again!
Mainline Plumbing Inc.
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Reviewed in January 2023
Great service I recommend J&J heating service
J & J Heating & Air, Inc.
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Reviewed in November 2022
Fair, practical and interested in supplying repair service instead of marketing new heating units.
Prime Energy Heat and Air
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Reviewed in May 2022
Joe Bryson is the best heating company I've ever hired. They repaired my heating system quickly, and it didn't cost me much either. They are the most affordable and reliable company.
JOE BRYSON HEATING & AIR
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Reviewed in November 2015
McLaughlins has ALWAYS been prompt, professional, helpful and polite. I use this company (and have for many years) 2x's a year for service to A/C before summer heat and to heater before winter cold. This is a company with integrity ! I highly recommend using them for your HVAC needs. I had...
McLaughlin Heating and Air Conditioning
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Reviewed in August 2015
They were great. I was worried because it's an old heater. He did tell me I should have it replaced. I didn't feel pressured to do so. He replaced the part and that was that.
Wally Falkes Heating & Air Conditioning
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Reviewed in February 2015
We had Brett and his assistant, Peyton out to repair an older heater. We had to have it fixed every year for various things. Brett took me up on the roof and explained the issues and recommended it be replaces. He was very through and knowledgeable. He gave me the cost of the new heater and...
Bret Turner Heating & Cooling
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Reviewed in February 2015
I received the most outstanding service! I went to Angie's list because I had been waiting for another company to come to my house and fix my heater for 2 months(Rod Johnsons Air). When he did call he just stated he could not find the parts and would give me a great deal on a new...
Sanchez Quality Performance HVAC
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Reviewed in October 2013
Our heater wasn't producing heat when we tested it out. I had called another company out that had been doing some maintenance on our system prior. When the other company arrived to do a service, they found that a safety switch wasn't working and it needed replacing at $300+. We scheduled them to...
Airway Heating & Air Conditioning
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Find Heating oil pros in Denair

Elite Heating and Air LLC

Elite Heating and Air LLC

75 local quotes requested

9 years of experience

Elite Heating and Air LLC is a locally owned and operated company that values honesty and integrity in all aspects of our business. Our dedicated team of professionals have years of hands-on experience, to provide innovative ideas and suggestions tailored to your projects. Our services are customized to your individual needs, paying close attention to the details of each project that we are involved with. Here at Elite we stand behind quality workmanship,Please feel free to contact us today!

"Jorge, Angel, Ishmael, and George were fantastic. Jorge was honest and straight in the initial conversations. He gave me multiple options for systems and their functionality. When I made my selection I was given a very fair price for the work that was to be done. He was very helpful in acquiring good financing that bested my Credit Union and Bank. The work was done quickly with great attention to the fine details. I now have an efficient and functional HVAC unit. If you need repairs or a replacement HVAC system you could not do better than selecting Elite Heating and Air for your job. I'm telling all my friends that if they need any work done - "I've got a guy"..."

Gary S on October 2025

"Jorge, Angel, Ishmael, and George were fantastic. Jorge was honest and straight in the initial conversations. He gave me multiple options for systems and their functionality. When I made my selection I was given a very fair price for the work that was to be done. He was very helpful in acquiring good financing that bested my Credit Union and Bank. The work was done quickly with great attention to the fine details. I now have an efficient and functional HVAC unit. If you need repairs or a replacement HVAC system you could not do better than selecting Elite Heating and Air for your job. I'm telling all my friends that if they need any work done - "I've got a guy"..."

Gary S on October 2025

The Air Doctor Heating & Air

The Air Doctor Heating & Air

Customers say: Terrific value

Recommended by 93% of Angi customers

16 local quotes requested

With 13 years of experience, The Air Doctor Heating & Air is the company you need to take care of your home or business. We offer quality work at an affordable rate. Give The Air Doctor Heating & Air a call today!

"They are thorough, prompt, and courteous."

Maria B on October 2023

"They are thorough, prompt, and courteous."

Maria B on October 2023

Cosmic Comfort

Cosmic Comfort

Customers say: True professional

Recommended by 94% of Angi customers

48 local quotes requested

Cosmic Comfort is a locally owned and operated company that values honesty and integrity in all aspects of our business. Our dedicated team of professionals have years of hands on experience, to provide innovative ideas and suggestions tailored to your projects. Our services are customized to your individual needs, paying close attention to the details of each project that we are involved with. Please feel free to contact us today!

"What a friendly and affordable company to go with. They were professional all the way through and their employees are hardworking and respectful of your property. I highly recommend them for any of your electrical needs."

John B on June 2025

"What a friendly and affordable company to go with. They were professional all the way through and their employees are hardworking and respectful of your property. I highly recommend them for any of your electrical needs."

John B on June 2025

Calor Air HVAC

Calor Air HVAC

Customers say: Quick response

Recommended by 100% of Angi customers

5 years of experience

Professional & Straightforward: HVAC technician / 10+ years experience in Installation, Service & Repair / Reliable & results-driven.

"Outstanding!"

Bruce A on August 2022

Professional & Straightforward: HVAC technician / 10+ years experience in Installation, Service & Repair / Reliable & results-driven.

"Outstanding!"

Bruce A on August 2022

Airmergency or "Airmergency Inc" definition; An exceptional Central Heating & Air Conditioning Company servicing California Contractor Lic # 981481 Bonded/Insured open 24 hours every day of the year for your indoor climate control & comfort.

Heating Oil questions, answered by experts

Your HVAC manufacturer will give you instructions on how often you should service your system. Have your unit professionally serviced at least once a year when in doubt.

Heat pump systems are different because they provide heating and cooling solutions for your home. In this case, you should have it serviced at least twice a year.

The most obvious downside is the high upfront cost of buying and installing one of these systems. Additionally, sometimes the system can take a longer time to heat than alternatives like a boiler. Also, if something goes wrong with the geothermal pump, repairs are often significantly more expensive than repairing traditional, above-ground heat pumps.

Service costs range from $200 to $1,500, depending on maintenance needs, system age, and labor.

For most systems, an annual HVAC system service is more than enough. Some homeowners prefer a twice-a-year visit to ensure the system is ready for the upcoming summer and winter seasons. If you need to call an HVAC pro more often than this, it may be time to check if your system is getting old enough for a replacement.

If a geothermal heat pump is installed correctly, then you shouldn’t have to worry about having a backup heat source such as a furnace or oil boiler. However, there are geothermal systems installed that include a backup in case the heat pump fails due to extreme cold. This is simply a backup heat pump you’ll likely never need and not an alternative heat source.

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