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 DIETERICH, IL HOMEOWNERS

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Verified Reviews for Heating Oil Service pros in Dieterich, IL

*The Angi rating for Heating Oil Service companies in Dieterich, 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 Dieterich, 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 26, 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 Dieterich

Affordable Home Repair

5.00(

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•Approved Pro

Affordable Home Repair

5.00(

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•Approved Pro

Customers say: Quick response

Recommended by 100% of Angi customers

192 local quotes requested

Over 20 years experience. Specializing in plumbing, electrical, construction, decks, porches, painting, drywall repair, roof repairs, excavating, concrete, general handyman services inside and outside your home. Servicing Bethany, IL and surrounding areas. Free estimates! 10% discount for military, veterans, and first responders. Call today for your handyman needs! Satisfaction Guaranteed!

"He was fantastic to work with and did a great job!"

Sam W on November 2024

"He was fantastic to work with and did a great job!"

Sam W on November 2024

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(

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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

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

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.

A geothermal heat pump system will take about 10 years to pay for itself, and it has a life span of anywhere from about 25 to 50 years. Installing a geothermal heat pump will cost about $14,250 upfront, but it can reduce your energy bills by around 65% when compared to a conventional HVAC system.

Most maintenance checks take 2-5 hours, though extensive repairs may take longer.

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.

The homeowners guide to home care is here

From average costs to expert advice, get all the answers you need to get your job done.

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