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 CROSSVILLE, TN HOMEOWNERS

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Verified Reviews for Heating Oil Service pros in Crossville, TN

*The Angi rating for Heating Oil Service companies in Crossville, TN 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 Crossville, TN 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 23, 2025

Reviewed in October 2020
We have been using One Hour Heating to maintain our furnace and A/C for years. Gerald was prompt, courteous and only did the work that was required to keep our system in good operating condition. He didn't try to sell us options that we didn't need.
One Hour Heating & Air Conditioning
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Reviewed in April 2019
I HIGHLY RECOMMEND BENNETT AIR AND HEATING ? HANDS DOWN !! Bennet Heating and Air , Mr Michael was our 2ND Estimate. I was very impressed with his TRUTHFUL knowledge and Service. NOW without any questions. I KNOW WHO TO CALL .....BENNETT HEATING AND AIR ????. Thank you for your prompt arrival...
Bennett Heating and Cooling
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Reviewed in August 2016
Determined that the water heater element had burned out so instead of replacing the entire unit, he just replaced the defective heating element, thereby saving me another $200.00 or more.
Martin Plumbing
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Reviewed in June 2014
We almost always get the same technician (Mike) for both our heating and cooling tune-ups. He's very courteous, easy going, and remembers us, our house and previous visits. Couldn't ask for better service!!!
Hiller Plumbing Heating Cooling & Electrical
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Reviewed in February 2014
In short, Petrie Heating and Cooling has in my family a very satisfied customer because of Petrie's professionalism and adherence to living up to his agreements. I can certainly recommend the firm highly.
Petrie's One Hour
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Reviewed in August 2013
Mr. Rooter installed a direct vent water heater. We were without hot water and Mr. Rooter responded quickly to air ship in a water heater and have it installed the day after I contacted them.
Mr. Rooter Plumbing of Crossville
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Reviewed in February 2013
I have used Crossville Heating and Cooling several times. Their office staff is very nice, their technicians are always professional and friendly. They have always been upfront and honest with us, and they do great work for a fair price! I would highly recommend Crossville Heating and Cooling to...
Crossville Heating and Cooling
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Reviewed in October 2010
He was quick to take care of the plumbing problem and we were impressed with his efficiency. He has also installed a water heater for me. He is not the cheapest plumber but he certainly knows what he's doing and provides a very good service. He's a good conversationalist as well and a pleasure...
Michael Motley Plumbing
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Find Heating oil pros in Crossville

1st Stop Heating & Cooling-Plumbing

1st Stop Heating & Cooling-Plumbing

Customers say: Quick response

Recommended by 100% of Angi customers

3 years of experience

We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business!

"They were on time. Did a great job, even picked up after themselves afterwards!"

Ashley on February 2023

"They were on time. Did a great job, even picked up after themselves afterwards!"

Ashley on February 2023

Subzero Heating Cooling & Refrigeration

Subzero Heating Cooling & Refrigeration

Customers say: Quick response

Recommended by 100% of Angi customers

7 years of experience

We take great pride in our experience, expertise, quality and customer service that we provide to meet your needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer a professional manner.

"Chris is excellent, I will use him in the future and recommend him"

Jim H on June 2023

"Chris is excellent, I will use him in the future and recommend him"

Jim H on June 2023

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.

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.

Regular inspections, loop flushing, and checking heat exchangers help extend system lifespan.

Yes, technicians check refrigerant levels, loop performance, and system calibration for peak efficiency.

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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