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  • Average homeowner rating star icon4.7
    Average homeowner rating
  • Verified reviews icon67
    Verified heating oil services reviews

Find Heating oil pros in Cornelius

Avatar for Comfort Monster Heating & Air / Absolute

Comfort Monster Heating & Air / Absolute

11001 W Tremont Ave
4.79(
221
)
Approved Pro

Comfort Monster Heating & Air / Absolute

11001 W Tremont Ave
4.79(
221
)
Approved Pro
Customers say: True professional
Recommended by 93% of Angi customers
Recommended by 93% of HomeAdvisor customers
73 local quotes requested

For a limited time, we're offering $0 diagnostic calls for first-time customers! Estimates for a new home comfort system are always 100% free. We are a full service Heating and Air Conditioning Company providing quality service and installation to homeowners in Charlotte, NC, and the surrounding areas in both North and South Carolina. Our team of licensed HVAC professionals are on a mission to give you the BEST customer service experience you've ever had. Our technicians have an average of 12 years of HVAC experience, and are here to help answer all of your HVAC questions. At Comfort Monster Heating & Air, We Provide Service So Good, It's Scary!

"Gabe came through and dis a great job with the AC service. He was very knowledgeable and courteous"

Valerie N on February 2025

For a limited time, we're offering $0 diagnostic calls for first-time customers! Estimates for a new home comfort system are always 100% free. We are a full service Heating and Air Conditioning Company providing quality service and installation to homeowners in Charlotte, NC, and the surrounding areas in both North and South Carolina. Our team of licensed HVAC professionals are on a mission to give you the BEST customer service experience you've ever had. Our technicians have an average of 12 years of HVAC experience, and are here to help answer all of your HVAC questions. At Comfort Monster Heating & Air, We Provide Service So Good, It's Scary!

"Gabe came through and dis a great job with the AC service. He was very knowledgeable and courteous"

Valerie N on February 2025


Avatar for Silver Line Construction Plus

Silver Line Construction Plus

2006 Hill Crest Road Northwest
5.00(
11
)
Approved Pro

Silver Line Construction Plus

2006 Hill Crest Road Northwest
5.00(
11
)
Approved Pro
Super Service Award
Customers say: Quality work
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
10 years of experience

With over 10 years of experience, I take pride in my quality craftsmanship. We are owner operated, and believe in building long-term relationships with our clients by delivering honesty along with exceptional work. We pride our company on reliability, great communication, integrity, and customer service. We are experts in our trade and will do our best to keep you as educated as we can on your particular project. Give us a call today! We look forward to working with you!

"They did a great job! My roof looks great! Reliable and kept me well informed about everything. They kept cost in mind and cleaned up nicely after themselves. Serge even came out late to tarp the roof until it could get repaired so that I didnâ t have any further damage to the house waiting for the roof. They were very nice to work with. Great people. I canâ t say enough good things about them!"

Sammi E on June 2024

With over 10 years of experience, I take pride in my quality craftsmanship. We are owner operated, and believe in building long-term relationships with our clients by delivering honesty along with exceptional work. We pride our company on reliability, great communication, integrity, and customer service. We are experts in our trade and will do our best to keep you as educated as we can on your particular project. Give us a call today! We look forward to working with you!

"They did a great job! My roof looks great! Reliable and kept me well informed about everything. They kept cost in mind and cleaned up nicely after themselves. Serge even came out late to tarp the roof until it could get repaired so that I didnâ t have any further damage to the house waiting for the roof. They were very nice to work with. Great people. I canâ t say enough good things about them!"

Sammi E on June 2024


Avatar for Hvac Service Corporation

Hvac Service Corporation

321 S Avon Street
New on AngiNew on Angi
Approved Pro

Hvac Service Corporation

321 S Avon Street
New on AngiNew on Angi
Approved Pro
18 years of experience
Free onsite estimate

We have extensive experience providing design, construction, installation and on going maintenance for all of our service lines across a diverse spectrum of industries and asset types. Founded over 75 years ago, HVAC Service Corporation has been a cornerstone in the Carolinas for reliable and efficient HVAC solutions. Our commitment to quality service and customer satisfaction has made us a trusted name in the industry. We are licensed and insured in North Carolina, South Carolina, and parts of Georgia, with our headquarters located in Gastonia, NC. Our mission is to provide top-notch commercial heating and air conditioning services that meet the unique needs of our clients.

We have extensive experience providing design, construction, installation and on going maintenance for all of our service lines across a diverse spectrum of industries and asset types. Founded over 75 years ago, HVAC Service Corporation has been a cornerstone in the Carolinas for reliable and efficient HVAC solutions. Our commitment to quality service and customer satisfaction has made us a trusted name in the industry. We are licensed and insured in North Carolina, South Carolina, and parts of Georgia, with our headquarters located in Gastonia, NC. Our mission is to provide top-notch commercial heating and air conditioning services that meet the unique needs of our clients.


DB Mechanical Heating and Cooling, LLC

3104 Eastover Ridge Drive, Unit 913
New on AngiNew on Angi
Approved Pro

DB Mechanical Heating and Cooling, LLC

3104 Eastover Ridge Drive, Unit 913
New on AngiNew on Angi
Approved Pro
10 years of experience
Free onsite estimate

Welcome to DB Mechanical Heating and Cooling, LLC! Since opening our doors in 2015, we have been proud to service Charlotte and the surround areas. With over 15 years experience, no project is too big or too small for us to handle and customer satisfaction is always guaranteed. Give us a call, we can't wait to work with you!

Welcome to DB Mechanical Heating and Cooling, LLC! Since opening our doors in 2015, we have been proud to service Charlotte and the surround areas. With over 15 years experience, no project is too big or too small for us to handle and customer satisfaction is always guaranteed. Give us a call, we can't wait to work with you!


Subnet Zero Air Condition and Heating

2617 Slowan Drive
4.90(
31
)
Approved Pro

Subnet Zero Air Condition and Heating

2617 Slowan Drive
4.90(
31
)
Approved Pro
Customers say: Quick response
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers
15 years of experience

Subnet Zero Air Condition and Heating is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests and make their concerns the basis of our business.

"Reagan called to ask about my issue with my AC, and made time to come by my house the same day. He called prior to arriving and came at the time he said he’d be here. He was professional, courteous and informative. I would recommend him, and will absolutely contact him again for future HVAC needs."

Amy G on August 2021

Subnet Zero Air Condition and Heating is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests and make their concerns the basis of our business.

"Reagan called to ask about my issue with my AC, and made time to come by my house the same day. He called prior to arriving and came at the time he said he’d be here. He was professional, courteous and informative. I would recommend him, and will absolutely contact him again for future HVAC needs."

Amy G on August 2021


Avatar for HS Services HVAC, Inc.

HS Services HVAC, Inc.

7427 Matthews Mint Hill Rd, Unit 105
4.89(
9
)
Approved Pro

HS Services HVAC, Inc.

7427 Matthews Mint Hill Rd, Unit 105
4.89(
9
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
7 years of experience

HS Services HVAC Inc is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business. With a 24hr service.

"These guys were awesome! They arrived on schedule and knocked out the needed work on no time. My new HVAC crew for sure."

Dusty T on November 2019

HS Services HVAC Inc is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business. With a 24hr service.

"These guys were awesome! They arrived on schedule and knocked out the needed work on no time. My new HVAC crew for sure."

Dusty T on November 2019


Avatar for L3 HVAC, LLC

L3 HVAC, LLC

170 Beth Dr
4.98(
21
)
Approved Pro

L3 HVAC, LLC

170 Beth Dr
4.98(
21
)
Approved Pro
Customers say: Quick response
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers
23 local quotes requested

At L3 HVAC, we’re more than just a heating and cooling company — we’re a family, committed to serving our community with integrity, excellence, and respect. As a Christian-based, family-owned and operated business, we approach every project with the same dedication and care as if we were working unto the Lord. Proudly serving Charlotte and the surrounding areas, we offer personalized HVAC solutions for both residential and light commercial spaces. Whether you need a quick repair or a full system installation, we’re here to help. Ask us about our no-hassle Routine Maintenance Agreement — no pre-payments or monthly fees required. Just honest service, when you need it most.

"extremely knowledgeable and professional, very pleasant, willing to give updates as the project went along. started the job and completed the work without interruption. very pleased with the results."

Mark H on July 2024

At L3 HVAC, we’re more than just a heating and cooling company — we’re a family, committed to serving our community with integrity, excellence, and respect. As a Christian-based, family-owned and operated business, we approach every project with the same dedication and care as if we were working unto the Lord. Proudly serving Charlotte and the surrounding areas, we offer personalized HVAC solutions for both residential and light commercial spaces. Whether you need a quick repair or a full system installation, we’re here to help. Ask us about our no-hassle Routine Maintenance Agreement — no pre-payments or monthly fees required. Just honest service, when you need it most.

"extremely knowledgeable and professional, very pleasant, willing to give updates as the project went along. started the job and completed the work without interruption. very pleased with the results."

Mark H on July 2024


Avatar for Call Dad, LLC

Call Dad, LLC

4400 N. Stuart Andrew Blvd Suite N
4.16(
16
)
Approved Pro

Call Dad, LLC

4400 N. Stuart Andrew Blvd Suite N
4.16(
16
)
Approved Pro
Customers say: Quick response
311 local quotes requested
13 years of experience

Call Dad, LLC is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests and make their concerns the basis of our business.

"Still waiting for a call back after initial visit. They were to move forward but no time schedule yet and A/C not working. As of now, this looks like 4 days of wasted time as I am not sure their customer service exist. The lady this morning said she would mark as urgent and get to a manager. You would think a simple call to a customer explaining backlog or schedule repair date should not take more than 5 minutes. Will give them until later today and then move on..."

Paul D on August 2025

Call Dad, LLC is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests and make their concerns the basis of our business.

"Still waiting for a call back after initial visit. They were to move forward but no time schedule yet and A/C not working. As of now, this looks like 4 days of wasted time as I am not sure their customer service exist. The lady this morning said she would mark as urgent and get to a manager. You would think a simple call to a customer explaining backlog or schedule repair date should not take more than 5 minutes. Will give them until later today and then move on..."

Paul D on August 2025


Avatar for Commitment to Excellence HVAC, Inc.

Commitment to Excellence HVAC, Inc.

6120 Brookshire Blvd Ste S
5.00(
3
)
Approved Pro

Commitment to Excellence HVAC, Inc.

6120 Brookshire Blvd Ste S
5.00(
3
)
Approved Pro
Free onsite estimate
Emergency services offered

We invite you to experience a tradition of customer satisfaction that will exceed your greatest expectations. Our professionalism and quality workmanship will accurately reflect your taste and lifestyle. From conception to completion, we work with you until the job is done. We are ethical, honest, and easy to communicate with. Call us today you'll be pleased you did. Thank you

"CTE HVAC was amazing and they did not leave until my air was working. My landlord couldn’t figure out the issue and they did. I have small children and they made it their mission to get my home cooled off. It was 95 degrees when they came. When they finished they hung around to monitor the decrease in temperature and even showed me what the issue was. When they left it was at 70 degrees. I am grateful for CTE and their commitment to getting the job done. I would highly recommend their company to anyone at anytime. If you have any issues with your HVAC system CTE is the first company to call because you will not need another one."

Matisha W on October 2025

We invite you to experience a tradition of customer satisfaction that will exceed your greatest expectations. Our professionalism and quality workmanship will accurately reflect your taste and lifestyle. From conception to completion, we work with you until the job is done. We are ethical, honest, and easy to communicate with. Call us today you'll be pleased you did. Thank you

"CTE HVAC was amazing and they did not leave until my air was working. My landlord couldn’t figure out the issue and they did. I have small children and they made it their mission to get my home cooled off. It was 95 degrees when they came. When they finished they hung around to monitor the decrease in temperature and even showed me what the issue was. When they left it was at 70 degrees. I am grateful for CTE and their commitment to getting the job done. I would highly recommend their company to anyone at anytime. If you have any issues with your HVAC system CTE is the first company to call because you will not need another one."

Matisha W on October 2025


Avatar for Varsity Zone HVAC of Mooresville

Varsity Zone HVAC of Mooresville

116 Gasoline Alley Suite 123
5.00(
5
)
Approved Pro

Varsity Zone HVAC of Mooresville

116 Gasoline Alley Suite 123
5.00(
5
)
Approved Pro
79 local quotes requested
1 years of experience

At Varsity Zone HVAC of Mooresville, we pride ourselves on being the trusted choice for top-tier heating and cooling solutions in our community. With proven expertise and a commitment to delivering unbeatable service, we ensure your home stays comfortable year-round. Our all-star technicians handle everything from new installations to timely repairs with precision and care. When it comes to your home's comfort, you deserve nothing but the best. That's why we offer a wide selection of high-quality products from trusted brands, including energy-efficient options that can help you save on utility costs. Our team is also well-versed in the latest industry techniques and technologies, so you can trust us to provide top-notch installation, repair, and maintenance services.

At Varsity Zone HVAC of Mooresville, we pride ourselves on being the trusted choice for top-tier heating and cooling solutions in our community. With proven expertise and a commitment to delivering unbeatable service, we ensure your home stays comfortable year-round. Our all-star technicians handle everything from new installations to timely repairs with precision and care. When it comes to your home's comfort, you deserve nothing but the best. That's why we offer a wide selection of high-quality products from trusted brands, including energy-efficient options that can help you save on utility costs. Our team is also well-versed in the latest industry techniques and technologies, so you can trust us to provide top-notch installation, repair, and maintenance services.

Showing 1-10 of 35
Heating Oil questions, answered by experts

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 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.

It’s a better use of energy (and your money) NOT to run an ERV system all the time. Most experts recommend that you cycle your ERV system on and off throughout the year. However, the recommended advice could change based on your climate, the number of people in your home, the size and style of your home, and your heating and cooling system. Contact a local pro for more specific advice.

While it's generally safe to stay in a home with a coolant leak if your home is properly ventilated, it's important to have a professional come out to assess the situation right away. You should evacuate your home if you notice any powerful fumes. Additionally, you should leave your home if you are experiencing headaches or dizziness.

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

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