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603 Oil Burner Service Heating & Cooling

24hr HVAC and Service in Hopkinton
Opening at 9:00 AM tomorrow
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We are taking a break from work as we approach a hard time for family matters. We will keep everyone informed as soon as possible. Prayers and needed at this time.

Hopefully everyone is finally finding some normalcy returning to their life after quite a ride in 2020. Despite the Covid issues we have done well and have continued to expand our offerings. As many of you know we started out small doing mainly oil service and installs back in 2017. We also o...

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Well summer is over, Fall is here and the “white stuff” is on the way. Please take some time to look at your heating system and consider having it serviced BEFORE you really need it! Most of us turn up the thermostat and/or shower when we are cold and think nothing of where that warmth comes fro...

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Time to do maintenance on air conditioning systems. If you don’t have air conditioning give us a call and we can hook you up with a great mini split before the weather gets too hot.

More windows for Gerry Dumont our of Antrim! These custom windows were a challenge to put in on a trailer home. We work with all brands and will install any window, anywhere you want! Call today for a quote or any questions regarding an install and features!
(603) 494-8645

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We now offer full installations for mini splits! We work with all brand manufactures and we give you the absolute best pricing and install guaranteed! Call or email us today for a quote or any questions regarding installs or quotes! We are happy to hear from you!
(603) 494-0494

We have spent the winter working on expanded service and installation offerings. We have obtained the proper certifications and training to now offer mini split system installation and service. Now is the time to think about adding this great technology to your home in the spring putting those ta...

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In light of the upcoming snowy weather take some time to keep venting clear from snow. Also if you have an oil tank that is outside it’s best to cover the filter and lines and protect them from the direct cold. Oil starts to gel around 20 degrees and any water in the tank will freeze.


5 months ago
I called my local oil company after waking up to find my furnace was not running, and I had already tried most of the resets and basic homeowner stuff with no success. They could not help me, and the service people they suggested wanted almost a mortgage payment to stop by my house just to see what the issue was. After a quick search, I located 603, and they were close by. I called them and got a real person who said he would be happy to help. He came right over and arrived when he said he would. Super personable and beyond qualified. In no time, he had figured out the issue, cleaned and repaired my entire system, and fixed a long-running hot water issue. And in the end, he charged me a fair price and offered follow up service if needed. I can’t say enough about this company. If you are in the Hillsboro area and are looking for a quality HVAC service company, I can highly recommend 603! They have truly earned my business, and I already have them on my calendar for next years’ ser...
- Andrew W
4 months ago
Spoke with owner about propane conversion for our dryer. He was super responsive. Sent technician to do the conversion. Kyle was very respectful, knowledgeable and friendly. I’ll definitely be using 603 OBS again!
- Christine R
3 years ago
We just bought a mobile home with a furnace that hadn't been serviced in 3 years. We called a large local company who played around with it for a bit, got it to run and then left. It never ran after that. They never mentioned it was running at 60% efficiency or how bad the electrical was. We called these guys since they had good reviews. Kyle found out we had an air leak somewhere in the system and Peter showed us where the burner was completely broken apart and shorting it out. We decided to do a new furnace from them. They gave us a reasonable but worst case estimate, showed up on time, hauled the old furnace away and got it installed in just a few hours. They even swept up when they were done. They came in way under estimate and did an amazing job. I would recommend them to anyone I know, the price was very reasonable and they did an excellent job. I definitely would have thought we were going to pay a premium for the care they took and how good it looks now

HVAC and oil system service

603OBS doesn't sell fuel, we sell service.  Our goal is to provide competent, friendly service to our friends and neighbors.  We also install new heating and air conditioning systems including mini splits

Contact Us


Call now
  • (603) 494-0494
  • (603) 494-8645


Get directions
561 Thain Road
Hopkinton, NH 03229

Business Hours

Mon:9:00 AM – 5:00 PM
Tue:9:00 AM – 5:00 PM
Wed:9:00 AM – 5:00 PM
Thu:9:00 AM – 5:00 PM
Fri:9:00 AM – 5:00 PM
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