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Typical Greater Boston range for this kind of work, from regional averages — not a quote from A & G Gregory Heating & Air Conditioning. Use it to sanity-check bids, then get the real number in writing.
Estimated range
$5,000 – $11,400
Typical HVAC project around $8,200
A & G Gregory Heating & Air Conditioning is a Halifax, MA shop whose Google reviews, running from 2021 to 2026, average 4.2 stars — most of them about oil furnaces and boilers that wouldn't behave, with occasional air conditioning repairs too. The story that repeats across its reviews is the fix nobody else could make. In a 2022 review, a homeowner described a heating problem that had stumped other technicians for three years, solved within minutes once Al arrived. A December 2025 review recounts a furnace that quit before dawn in freezing weather, back up and running the same morning, and a February 2025 review says a previous technician's sloppy furnace cleaning was redone properly. On a 2025 job replacing an oil boiler, burner and power vent, a customer said costs were explained upfront before work started, and a 2023 review credits the company with chasing down a manufacturer's warranty after a furnace leak turned out to be a defective part. This spring, a homeowner whose air conditioner had stopped blowing cold air said a technician named Greg was sent out and had it fixed the same day. That troubleshooting strength comes with a real scheduling weak spot. A review from March 2026 describes a scheduled tune-up that ran about 10 minutes and covered only the oil filter at the tank, for $195 — compared with other quotes that priced a fuller service, including the furnace filter and burner cleaning, at a similar cost. Older reviews describe appointments that were never kept: a 2024 review reports a no-show with no callback, a 2022 review describes a maintenance visit pushed back twice with no explanation, and another 2022 review reports a no-show with no apology. A&G is the call for a genuine heating emergency or a problem other companies have given up on. Before booking routine maintenance, it's worth locking down exactly what a tune-up covers and getting a firm appointment window — that's where its complaints cluster.
Highly recommend ! My air conditioner wasn’t blowing cold air! I called A&G and the nicest lady called me back and immediately send Greg over and fixed my unit ! I’m so happy with customer service and fast and amazing ! Highly recommend 🙏 thank you!!!😊
I would strongly caution anyone considering A and G Gregory Heating for a “tune-up.” I used them twice , and last visit was only 10 minutes (confirmed by my cameras). The only work performed was changing the oil filter at the tank nothing else. For this, I was charged $195 and they also left the old filter in my basement for me to dispose of. Afterward, I contacted other heating companies to compare, and was told that for roughly the same price ($225), a proper tune-up should include changing both filters (tank and furnace), replacing or checking the nozzle, cleaning and adjusting the burner, and typically takes 45–60 minutes. When I questioned A and G Gregory, they claimed their service is a standard tune-up, and that the additional work would cost several hundred dollars more. In my opinion, this is extremely misleading. What they are calling a “tune-up” appears to be the bare minimum possible service at near full price. Do yourself a favor and ask very specific questions about what is included before hiring them or consider getting a second opinion. There are more reputable companies out there than this one. Please do your research. Dave
Had an emergency with our oil heater in middle of night and freezing cold weather. Al took our call and came out first thing to get it fixed and heat flowing before the pipes froze. So thankful for the quick, knowledgeable and professional service! If you need someone, I recommend calling A&G Gregory Heating and Air Conditioning.
Fixed the problem and came out quickly. Highly recommend.
Highly recommend A & G, Al brings a wealth of experience and it was needed for our oil boiler/burner and power side vent replacement. Professional, prompt and upfront with all costs involved, will definitely be using them for any service needs going forward.
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1 change recorded — last scanned Sep 17, 2026.
Tricky old-house plumbing4.2
Fast emergency response3.8
Persistent problem-solving5.0
No-surprise, reasonable pricing4.5