How often do I need to service my HVAC system?

• <div><p>You need to service an HVAC system about twice per year, with a service including an inspection and basic maintenance. It’s best to schedule maintenance in the spring (after the furnace has been running and before the AC kicks on) and in the fall (after the AC worked hard all summer and before winter’s first chill arrives). </p><p>Regular HVAC services will keep the system working as efficiently as possible, saving you money on utilities and larger repairs. <a href="https://www.angi.com/articles/ac-service-cost.htm">HVAC maintenance costs</a> around $250 per visit, while bigger repairs from forgotten upkeep could cost thousands.</p></div>

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TRUSTED BY CLARISSA, MN HOMEOWNERS

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Verified Reviews for Heating Oil Service pros in Clarissa, MN

*The Angi rating for Heating Oil Service companies in Clarissa, 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 Clarissa, 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 December 04, 2025

Reviewed in November 2025
Diversified is my first call when there's heating or cooling to be fixed or installed. They're always very punctual and go out of their way to do a great job!
DIVERSIFIED SERVICES N.A. LLC.
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Reviewed in May 2025
Great job, well done. All new American Standard furnace/AC/Heat Pump.
Ellendale Heating & Cooling, LLC
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Reviewed in February 2024
Great customer service! Elite Comfort Heating and Cooling serviced all of my 4 houses ! Did an outstanding job! I truly recommend!
Elite Comfort Heating and Cooling
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Reviewed in January 2014
Contacted Conners Plumbing & Heating to come out and inspect our 12 year old leaking hot water heater to determine whether a replacement was needed. Dave was quickly able to determine that a replacement was necessary. Pricing was discussed, we obtained additional quotes, and ultimately decided...
Connors Plumbing & Heating Inc
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Reviewed in June 2013
The previous owner had been billed for installation of a new furnace and venting. Maybe that happened sometime in the 1960's but not in this century. That company would not even come out and inspect the work we were being billed for. We called Mand M Heating, they came out at the time...
M & M HEATING & AIR LLC
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Reviewed in October 2012
Mr Hemann came out and inspected the chimney and fireplace, he said the chimney was in great shape and did not require cleaning but noticed that the hot water heater exhaust pipe had some corrosion and suggested that a roofing and heating company be contacted. Since we had never used a fireplace...
Hemann Chimney Sweeping
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Reviewed in September 2010
We called Barnes Plumbing because two of our radiators were not heating properly. Mike came out and turned one of our radiator valves fully open and explained how to check the others in the house. He did not charge us and he took time to explain how our heating system works. We would...
Barnes Plumbing Co
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Reviewed in October 2007
They worked very quickly (probably from using the Pex pipe), and kept us on schedule. The framer couldnt build the portions until the water heater was moved, and the plumber couldnt rough-in the supply lines until the framing was in place. Both accommodated the other so it was all done well and...
Norblom Plumbing
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Find Heating oil pros in Clarissa

J Brothers Mechanical Plus

5.00(

)

J Brothers Mechanical Plus

5.00(

)

Recommended by 100% of Angi customers

Service plumbing, service heating and cooling, new construction plumbing, Heating, and cooling, equipment replacement.

"Excellent work done by J Brothers. Very professional and friendly. Got the job done in a timely manner and covered all the bases. Will hire again for all plumbing and HVAC needs! Only company I trust to get the job done."

Tyler B on December 2022

Service plumbing, service heating and cooling, new construction plumbing, Heating, and cooling, equipment replacement.

"Excellent work done by J Brothers. Very professional and friendly. Got the job done in a timely manner and covered all the bases. Will hire again for all plumbing and HVAC needs! Only company I trust to get the job done."

Tyler B on December 2022

Trisko Heating & Plumbing

5.00(

)

Trisko Heating & Plumbing

5.00(

)

Customers say: Quick response

Recommended by 100% of Angi customers

We are a 3rd generation company. We have been in business for almost 60 years. We pride ourselves on excellent customer service and quick response.

"Wonderful. The guy finished that project really quickly, on time, very professional."

Harmony S on May 2018

We are a 3rd generation company. We have been in business for almost 60 years. We pride ourselves on excellent customer service and quick response.

"Wonderful. The guy finished that project really quickly, on time, very professional."

Harmony S on May 2018

Heating Oil questions, answered by experts

Yes, many providers offer organic or eco-friendly treatments. Confirm availability with your contractor.

NATE-certified technicians may charge slightly higher service fees compared to non-certified technicians. This is because NATE certification signifies a higher level of expertise and professionalism, often leading to more efficient and effective HVAC repairs and installations. While the upfront cost may be marginally higher, NATE-certified technicians can potentially save you money in the long run by reducing energy consumption, preventing frequent breakdowns, and extending the life span of your HVAC system. When looking for a local HVAC company to hire, it never hurts to ask about NATE certifications.

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

You need to service an HVAC system about twice per year, with a service including an inspection and basic maintenance. It’s best to schedule maintenance in the spring (after the furnace has been running and before the AC kicks on) and in the fall (after the AC worked hard all summer and before winter’s first chill arrives).

Regular HVAC services will keep the system working as efficiently as possible, saving you money on utilities and larger repairs. HVAC maintenance costs around $250 per visit, while bigger repairs from forgotten upkeep could cost thousands.

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

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