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>

How much should an HVAC service call be?

• <div><p>Most HVAC companies charge a flat service call fee of between <b>$75 and $150</b>, which includes traveling to your home and inspecting your system to find the underlying problem. Keep in mind that these prices only include diagnostics and the actual repairs will usually be billed separately. If you’re calling for routine service, the service call will be included in your inspection and tune-up, with the total sitting around <b>$150</b>. Your prices could be a little higher if you have a very large home with multiple condensers and air handlers, as inspections and servicing take longer.</p></div>

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TRUSTED BY DOVER, MN HOMEOWNERS

4.8
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14
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Verified Reviews for Heating Oil Service pros in Dover, MN

*The Angi rating for Heating Oil Service companies in Dover, MN 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 Dover, MN 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 24, 2025

Reviewed in April 2017
K&S sent a technician the same day with no extra charge and the technician stayed until the central heating worked again. He replaced the igniter and the circuit board. It was pricey (approx. $550) but he also could have charged more, considering a family cannot live without heat in MN. The...
K & S Heating and Air Conditioning
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Reviewed in December 2014
They were reliable, friendly, they did work that lasted, and we had no problems. They are the people I go to for heating and air conditioning because they did a great job.
Superior Mechanical
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Reviewed in September 2013
They are always so professional and friendly. They always offer a vehicle to use when major repairs being done. For an oil change they have a lovely waiting area with coffee, bottled water, and TV to pass the time. They always send an email when it is time to return for next oil change. ...
Viking Buick and GMC
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Reviewed in September 2013
Good. Have had many oil changes at this location with multiple vehicles. No problems as of yet.
Walmart Supercenter
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Reviewed in May 2013
It was excellent. They were thorough, polite and when I re-tested there was considerable improvement to retaining heat in my house. They know their stuff and they do great work.
Expert Insulation Inc
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Reviewed in March 2013
oil change was fine, brake fluid was a sell job from service technician.
Joe's Auto Care
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Reviewed in March 2013
Tierney Plumbing came out promptly at the scheduled time, assessed the situation (relocating & replacing 1 water heater - replacing a 2nd water heater.) They were very thorough and courteous and said they would get back with me that week. When I didn't hear from them after a week, I called and...
Tierney Plumbing LLC
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Reviewed in July 2012
Jim was very prompt and reasonably priced. It would have taken me much longer to fix the door myself and I didn't feel like risking a trip to the ER (these springs have very high tension). I think it only took Jim about an hour plus he oiled the garage door so that it sounds much quieter. I was...
Nelson Overhead Door
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Reviewed in July 2012
He also installed our AC and heating. The AC was never sized right for our house. I would not use him again.
BANKS HEATING & AIR COND
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Reviewed in October 2011
We are adding radiant heat and needed to have the fireplace insert removed prior to pouring concrete. Larry pointed out that it would be difficult to replace the insert after the floor was finished. He also told me that if he sold me another insert I would probably find that it created too...
Brekke Fireplace Shoppe
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Heating Oil questions, answered by experts

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.

Most HVAC companies charge a flat service call fee of between $75 and $150, which includes traveling to your home and inspecting your system to find the underlying problem. Keep in mind that these prices only include diagnostics and the actual repairs will usually be billed separately. If you’re calling for routine service, the service call will be included in your inspection and tune-up, with the total sitting around $150. Your prices could be a little higher if you have a very large home with multiple condensers and air handlers, as inspections and servicing take longer.

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

There are three main types of heat pumps. An air-source heat pump system is the most common and has two parts—an indoor air handler unit and an outdoor heat pump unit. A ductless heat pump system functions similarly to an air-source heat pump system but doesn’t need ductwork to distribute the air. A geothermal heat pump system pulls heat from the ground to help heat your home.

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