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>

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>

Get matched with top heating oil pros in Haverhill, NH

Q: How do I maintain my geothermal system?

• <div><p>Regular inspections, loop flushing, and checking heat exchangers help extend system lifespan.</p></div>

Q: What are common geothermal system issues?

• <div><p>Leaks, poor airflow, reduced efficiency, and loop blockages are common problems requiring service.</p></div>

Q: What factors affect servicing costs?

• <div><p>Costs depend on system age, type, labor, and whether part replacements are necessary.</p></div>

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Verified Reviews for Heating Oil Service pros in Haverhill, NH

*The Angi rating for Heating Oil Service companies in Haverhill, NH 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 Haverhill, NH 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 October 21, 2025

Reviewed in May 2022
If you're looking for this type of service, don't look any further. IMO this company is the best in New England. We have used their services for hot water heater and gas dryer installs, and now ductwork cleaning. Ben and Dominic did a great job and were very conscientious of our home while...
Halls Clean Air Solutions
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Reviewed in November 2020
They are busy this time of year. Still made time for our water heater failure service call. Great team.
CRS Heating and Cooling, Inc.
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Reviewed in January 2017
We had used them to do an oil burner tune up at another house, which went very well. This was a different location and different guy. This tech seemed competent enough, though when he put the system back together the thermocouple stopped working (the pilot light would not stay lit). He replaced...
ARS / Rescue Rooter Boston
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Reviewed in February 2014
I am a first time customer of Boston Standard... I had one immediate issue to fix (no heat in one zone) and had also requested quotes for possible future service and new installations. Jeff was very prompt, polite and professional. He was very quick to determine the problem and fix it. He...
Boston Standard Company
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Reviewed in January 2013
Excellent service for 3 year old Carrier Heat Pump unit. Service representative arrived on schedule, and thoroughly checked out the system. At the end of the service he clearly explained one or two minor problems, and then spent several minutes explaining how we as owners can take better care...
Total Comfort
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Reviewed in November 2011
Bobby, our service tech, showed up with booties covering his street shoes - I especially appreciated this because I was having my house cleaned at the time. He was late but someone from the main office called 1/2 hour beforehand to let me know that he was running late due to a previous call...
Sila Heating, Cooling, Plumbing and Electrical
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Reviewed in September 2011
Showed up on time -- plumber and helper. Stuck with the job until it was complete ( replace all old galvanized pipes). Used them again when the hot water heater gave out several months later. (I was not present for that job). They did not bring the equipment to remove the old heater to the...
Tony Herce Plumbing
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Reviewed in April 2009
Made appointment for gift certificate oil change. All was friendly til I showed gift card. Go out into rain for registration so we can log you in to our system. Told them reg was on passenger seat and could they log me when they bring in the car. No, we can't. Went out into rain. Please...
AUTOSERV OF PLYMOUTH
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Reviewed in March 2009
We bought this home when it had been foreclosed on and been vacant for 2 years. The realtor told us that Cilley Plumbing had winterized the plumbing and heating (hot water) systems both years in the fall (before the weather turned cold), so we should contact them to turn it all back on. We set...
JOHN CILLEY PLUMBING AND HEATING
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Find Heating oil pros in Haverhill

Jeff Mackay Mechanical, LLC

Jeff Mackay Mechanical, LLC

Customers say: Quick response

20 years of experience

Free onsite estimate

With over 30 years of experience serving the Littleton Metro area, Jeff Mackay Mechanical, LLC, is the solution for all your HVAC needs. We take great pride in our extreme professionalism, timeliness and superior customer service on every job. We develop lasting relationships so that the next time service is needed there's no question on who to call. Satisfaction guaranteed! Call us today!

"He was professional, courteous, very knowledgeable. Took care of all our needs for the project. I highly recommend him. You did a outstanding job."

Howard P on September 2025

"He was professional, courteous, very knowledgeable. Took care of all our needs for the project. I highly recommend him. You did a outstanding job."

Howard P on September 2025

Kingdom Cooling

Kingdom Cooling

Customers say: Quick response

Recommended by 95% of Angi customers

5 years of experience

At Kingdom Cooling our priorities are customer service and quality work. We pride ourselves on building lasting relationships with our clients. Call us for an estimate. We look forward to working with you!

"Gerry was running late for my appointment to clean and inspect two A/C units. He called to let me know . That's a real big plus.... He didn't waste my time. Once he arrived , the work was done quietly , quickly and at what I thought was a fair price. I will call him if I need service in the future."

Riick D on June 2023

"Gerry was running late for my appointment to clean and inspect two A/C units. He called to let me know . That's a real big plus.... He didn't waste my time. Once he arrived , the work was done quietly , quickly and at what I thought was a fair price. I will call him if I need service in the future."

Riick D on June 2023

Pasquaney Mech LLC

711 Whittemore Point Rd S

5.00(

)

•Approved Pro

Pasquaney Mech LLC

711 Whittemore Point Rd S

5.00(

)

•Approved Pro

22 local quotes requested

1 years of experience

Leveraging Ten Years Experience In HVAC Across The Eastern Seaboard. To Provide An Above Average Service To My Customers. Looking Forward To Helping With Your Heating and Air Conditioning Needs Fully Insured NH Gas License GF2011042 Please reach out to Tylor at 6032446331 or [email protected] After Hours and Emergency Services

"Yvette personable and knowledgeable. And honest. I had a great experience and would hire him again. I highly recommend him!"

Lisa O on August 2025

"Yvette personable and knowledgeable. And honest. I had a great experience and would hire him again. I highly recommend him!"

Lisa O on August 2025

Thurston Mechanical LLC

Bradford

No reviews yet

Thurston Mechanical LLC

Bradford

No reviews yet

Free onsite estimate

Here at Thurston Mechanical LLC we provide service to both propane and oil heating systems; As well as servicing air conditioning systems both ductless and central. Licensed in both VT and NH. We service central VT and the surrounding areas. We also service and maintain refrigeration equipment both residential and commercial. We also offer 24hr emergency service.

Irving Oil

190 Commerce Way

4.29(

)

Irving Oil

190 Commerce Way

4.29(

)

Customers say: Terrific value

101 years of experience

Additional phone numbers - (888) 273-5222, (888) 865-8800, (603) 559-8700, (506) 202-2000, (800) 561-2447, (877) 929-7678. Additional address - PO Box 1421, Saint John, New Brunswick E2L 4K1. Additional emails - [email protected], [email protected]. Additional DBAs - Highlands Fuel Delivery LLC, Irving Heating Oil, Irving Oil Co, Irving Oil Corp. Additional contact name - Sheldon R Illsley.

Heating Oil questions, answered by experts

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.

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

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.

Leaks, poor airflow, reduced efficiency, and loop blockages are common problems requiring service.

Costs depend on system age, type, labor, and whether part replacements are necessary.

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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