How often should I service my HVAC?

• <div><p>Your HVAC manufacturer will give you instructions on how often you should service your system. Have your unit professionally serviced at least once a year when in doubt. </p><p>Heat pump systems are different because they provide heating and cooling solutions for your home. In this case, you should have it serviced at least twice a year.</p></div>

How long do geothermal systems last?

• <div><p>You can expect a geothermal system to last for years. According to the <a href="https://www.energy.gov/sites/prod/files/guide_to_geothermal_heat_pumps.pdf">Department of Energy, </a>the underground infrastructure for the heat pumps lasts about 25 to 50 years, which includes the pipes buried in the soil. The actual heat pump itself has a life span of around 25 years.</p></div>

How long does a good HVAC last?

• <div><p><a href="https://www.angi.com/articles/how-long-havc-last.htm">HVAC systems usually last between 10 and 30 years</a>, with most having a lifespan of around 20 years. Factors that impact a unit’s life expectancy include which brand you choose, how often you use it, and how well you maintain it. To make sure yours lasts as long as possible, make sure to keep it clean and schedule an annual service with an HVAC technician.</p></div>

Get matched with top heating oil pros in Knoxville, IL

Enter your ZIP and get matched with up to 5 pros

TRUSTED BY KNOXVILLE, IL HOMEOWNERS

4.4
Average homeowner rating
35
Verified heating oil services reviews

Verified Reviews for Heating Oil Service pros in Knoxville, IL

*The Angi rating for Heating Oil Service companies in Knoxville, 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 Knoxville, 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
Request a quote
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.
Request a quote
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
Request a quote
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
Request a quote
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
Request a quote
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
Request a quote
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
Request a quote
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
Request a quote

Find Heating oil pros in Knoxville

Ambit Energy Independent Sales Consultant

No reviews yet

Ambit Energy Independent Sales Consultant

No reviews yet

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

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

Your HVAC manufacturer will give you instructions on how often you should service your system. Have your unit professionally serviced at least once a year when in doubt.

Heat pump systems are different because they provide heating and cooling solutions for your home. In this case, you should have it serviced at least twice a year.

You can expect a geothermal system to last for years. According to the Department of Energy, the underground infrastructure for the heat pumps lasts about 25 to 50 years, which includes the pipes buried in the soil. The actual heat pump itself has a life span of around 25 years.

HVAC systems usually last between 10 and 30 years, with most having a lifespan of around 20 years. Factors that impact a unit’s life expectancy include which brand you choose, how often you use it, and how well you maintain it. To make sure yours lasts as long as possible, make sure to keep it clean and schedule an annual service with an HVAC technician.

Yes, geothermal heat pumps are worth the money. You can save about 70% on heating costs in the winter and around 50% on cooling costs in the summer with a geothermal heat pump compared to a traditional HVAC system. Over time, your savings on monthly utilities will pay for the cost of the geothermal heat pump installation. If you have an incredibly small yard, however, you may not have enough space for this type of system.

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.

See all articles

Alison Kasch
•
Oct 14, 2025Oct 14, 2025
How Much Does Lawn Removal Cost? [2025 Data]
Removing an old lawn is often necessary to plant new grass or build a new outdoor structure. Find out what to budget for your lawn removal cost.
Alison Kasch
•
Apr 16, 2025Apr 16, 2025
What Are the Average Prices for Mowing Lawns? [2025 Data]
The average lawn mowing cost runs between $50 and $200 depending on factors like your lawn’s size and shape. Here’s what to expect.
Heather Ayer
•
Oct 13, 2025Oct 13, 2025
How Much Does It Cost to Seed and Reseed a Lawn? [2025 Data]
The cost to reseed a lawn can vary depending on the size of your yard and the condition of the soil. We’ll help you figure out the true cost of reseeding or overseeding your lawn, along with whether or not you should hire a professional.
Tyler Lacoma
•
Feb 19, 2025Feb 19, 2025
When to Mow New Grass: A Complete Guide
Learn when the best time to mow new grass, plus some considerations to consider in this short informational guide for homeowners.
Mariel Loveland
•
Oct 22, 2025Oct 22, 2025
Lawn Identification Guide: What Kind of Grass Do I Have?
The type of grass you have dictates a lot about your lawn, including how you take care of it. This lawn grass identification guide can help.
Ginny Bartolone
•
Feb 19, 2025Feb 19, 2025
7 Best Grasses for Sandy Soil
A sandy soil composition brings a unique set of challenges to your lawn. Choose a grass for sandy soil that's ready to adapt to your area's climate no matter the weather.