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 CARMEL, CA HOMEOWNERS

4.2
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Verified Reviews for Heating Oil Service pros in Carmel, CA

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

Reviewed in October 2022
Quick response time and positive attitude. I needed a water heater replaced and was dreading a cold shower. Preston removed and hauled away the old one and installed the new one quickly and efficiently. I would hire him again.
Preston's Plumbing & Heating
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Reviewed in March 2014
Despite the fact that Star-tune doesn't do smog tests at their shop - they had it done for me along with an oil change that I requested and assessment of an oil leak. They did not do a lot to my car because it was not needed at this time... and that is one of the things I liked about Star-Tune -...
Star-Tune
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Reviewed in May 2013
Great! They inspected the system and determined it was not a problem with our radient heat but a problem with the water heater which told us to call the plumber.
Heritage Plumbing & Heating
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Reviewed in January 2013
I had a problem with the heater I purchased and they were very nice and easy to deal with. It was the product and they took care of it with no hassle, great customer service. They also have certain smaller items that you cant find other places, ex liquid ant bait.
SALINAS ACE HARDWARE
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Reviewed in April 2010
Chris Wilson plumbing responded to a service call. They fixed my heater that was not working, and this took less than one hour's time and a small part was replaced. The total bill was almost $500, which I thought was outrageous. When I complained to the company, they explained they were on a...
Chris Wilson Plumbing & Heating Repairs Inc
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Heating Oil questions, answered by experts

Costs depend on system age, type, labor, and whether part replacements are necessary.

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.

DIY maintenance like filter cleaning is possible, but professional servicing ensures proper pressure, refrigerant levels, and loop performance.

There are several common types of HVAC systems that you may have, including split systems, hybrid HVAC, duct-free systems, packaged heating and air, geothermal heating, or even portable units for heating or cooling. If you aren’t sure which type is in your home or are looking to install something different, you should consult an HVAC pro to determine which option is right for your heating and cooling needs.

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.

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