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Barrett's Oil Burner Services says it works only on oil-fired heating: oil burner care and repair and residential oil removal, with 24/7 emergency service across Nashua, Hollis, Hudson, Merrimack, Amherst and Litchfield. Google shows 3 stars from 4 ratings, and its written reviews run from 2014 to 2019. In a January 2014 review, a customer who called late on a Saturday said the company showed up on time at 10 the next morning, did a full furnace service at a fair price, and was booked again for the following year. A customer writing in December 2019 said they bought a furnace from the company in 2016 and were satisfied with the yearly servicing until that December's routine visit: when they objected to the technician bringing his dog into the house, he packed up and left without finishing, the furnace would not fire afterward, and a message about having no heat was never returned. In a May 2017 review, a customer who called about an air conditioner that was not blowing cold air said the technician added 11 pounds of coolant without discussing the cost first, billed $410, and the AC still did not work and was said to need replacing.
Beware. I purchased a furnace from this company in 2016. I was satisfied with his work and he has satisfactorily serviced it yearly since. This year (December ’19) he came for routine servicing – furnace was running fine. The last “equipment” trip into the house was his dog. I objected; he packed up and left – not finishing servicing my furnace. Problem is my furnace did not fire up after he left. I called-left a message that I had no heat. He never returned or called back. I had to call someone else to get my furnace going. So if you don’t mind working with someone who insists on bringing his dog into the house while he services your furnace and you are content with someone with his work ethic (leaving me with a furnace that no longer works), feel free to use him.
We called because our AC was not blowing in cold air. The technician showed up and immediately began working on the AC unit outside the house. He then proceeded to pull out machine with a three way valve, and attached the the tank and turned the machine on and off periodically. He then informed me that he had just put in 11 pounds of coolant and it would cost me 30 dollar/pound and with his hourly rate we were in 410 dollars already. Oh, and the AC was not fixed, and I was told that it needed to be replaced. HE DID NOT DISCUSS THE COST OR EVEN WHAT NEEDED TO BE DONE BEFORE DOING ANYTHING, and gave me a bill of $410 with a non-functioning AC.
Very good and honest service. Called late on a Saturday and was told they would be there at 10 on Sunday. Showed up on time and did an excellent job for a fair price. Won't go into details of my furnace issue but they did a full service and replaced one part. I had not had the furnace serviced in 3 years ..... Very happy with the service, so much so that I booked a service for next year.
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1 change recorded — last scanned Sep 24, 2026.
Typical New Hampshire range for this kind of work, from regional averages — not a quote from Barrett's Oil Burner Services. Use it to sanity-check bids, then get the real number in writing.
Estimated range
$4,700 – $10,700
Typical HVAC project around $7,700
Prompt repair visits5.0
Water treatment installs5.0
Smoking plug fixed within a couple of hours5.0
Careful window replacement3.6
Active NH license2.5
36 years in businessNot yet rated
Service visits in Spanish4.1
