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 STOCKTON, IL HOMEOWNERS

4.4
Average homeowner rating
36
Verified heating oil services reviews

Verified Reviews for Heating Oil Service pros in Stockton, IL

*The Angi rating for Heating Oil Service companies in Stockton, IL 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 Stockton, IL 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 November 27, 2025

Reviewed in July 2024
Showed up to install a new water heater same day. I was very happy with my experience. Tim was able to answer all my questions and the project was done very quickly. Excellent service very knowledgeable and professional. I completely recommend Grundy Plumbing.
GRUNDY PLUMBING, LLC
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Reviewed in November 2023
Do not trust this guy Tim. I had him install a new water heater in my house in April 2023. Well when he changed the water heater he did not mentioned that he cut wires from the furnace that was connected to a sensor on the water heater. Come this end of October and when my furnace needed to be...
Dupage Home Services, Inc.
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Reviewed in July 2017
They changed the oil. That is it. It was a free oil change. There was no charge. There were no problems.
BRIAN BEMIS AUTOMOTIVE GROUP
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Reviewed in September 2016
They came out right away and looked at the existing air conditioner and also the furnace in order to give us an estimate on new units. The air was not working at this time and it was 90 outside with a heat index of 99 (in the house it was 80 degrees. They checked the air and confirmed that it...
Franzen Heating & Cooling
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Reviewed in October 2013
He showed up 15 minutes early and started the outside inspection. He was very thorough, went through every part of the house, checked every window, cabinet and appliance. Went through the crawlspace to test the furnace and water heater. The price above also included a radon test and pest...
SHERLOCK HOMES INSPECTION
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Reviewed in September 2013
It has both the car wash as well as oil change facilities. worth for the money spent.
Fuller's Car Wash of Aurora
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Reviewed in May 2013
We prompt, professional, and informative. We had they installer comeback and replace some outlets and reroute some electrical so we could install a heater in the garage. The installer didnt and quot;padand quot; the time spent on the installation. Very Happy.
Masters Brothers
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Reviewed in August 2012
This was for some rental properties we have. We will use them as our go to guys for heating and air conditioning. They are very professional. We made the appointment and they called on their way out. They were on time. They communicated well while everything was being done during the maintenance.
RCM Heating & Cooling
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Find Heating oil pros in Stockton

Ambit Energy Independent Sales Consultant

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Ambit Energy Independent Sales Consultant

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19 years of experience

Alternative Gas & Electric Service Provider. Go on line at www.2FreeEng.com for your No Obligation Free Quote. No Cost to switch your service! Takes about 10 minutes and you could be saving and earning travel rewards and Free Energy options!

Fowler Heating & Cooling

4.64(

)

Fowler Heating & Cooling

4.64(

)

Customers say: Super punctual

Recommended by 90% of Angi customers

Fowler Heating and Cooling is Family owned and operated. Serving the Southern Illinois Area since 1979. Specializing in Heating, Air Conditioning, Furnaces, and Duct Cleaning. Our dedication and appreciation of our customers and their needs has resulted in over 70% of our business comes from referrals. We care about our quality of our work, and the relationships with our customers. ‎ [email protected].

Heating Oil questions, answered by experts

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.

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

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.

Geothermal systems provide energy efficiency, lower utility bills, and long-term sustainability with minimal environmental impact.

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

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