J.J. Sullivan, Inc.

$$ • Propane, Heating & Air Conditioning/HVAC, Utilities

229 River St, Guilford, CT 06437

About J.J. Sullivan, Inc.

J.J. Sullivan, Inc. is a trusted family-owned business with a strong reputation in the community, having served customers for over 80 years. Known for their outstanding workmanship, they provide a range of services including the installation of furnaces, central air conditioning, and Mini-Split systems. Customers appreciate the quick response times and the reliable service, with technicians often going above and beyond to address concerns, even on weekends. The company is praised for its friendly and professional staff who handle everything from service appointments to billing inquiries with care. Many clients have transitioned to using their propane services and have consistently reported satisfaction with the quality and reliability of their work. Overall, J.J. Sullivan, Inc. exemplifies good old New England service, making it a preferred choice over larger corporate companies.

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Reviews for J.J. Sullivan, Inc.

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  • Dec 2025

    A few years ago I moved my business to JJ Sullivan because of their reputation and I have not been disappointed. They installed a new furnace and the workmanship was outstanding. They respond almost immediately to any inquiry. I am often away from home but I trust them that if I need them to respond they will. Good old New England service from a family business. WAY worth the few extra dollars.

  • Dec 2025

    We moved to Guilford 25 years ago and needed an oil company. I chose Sullivan’s because they were family owned, in business for 80 years at the time and Irish. Lol, what can I tell you, it’s the truth ☘️. I’ve never been disappointed by them. Once they started selling propane I became a propane customer too. They’ve installed my furnace, central AC and Mini-Split systems, all working well for many years.

  • Dec 2025

    We have always been very happy with our dealings with everyone at JJ Sullivan. J P went above and beyond with the last service call. He came out on a Sunday to replace the thermostat even though we told him it could have waited.

Hours

Monday: 7AM - 4PM
Tuesday: 7AM - 4PM
Wednesday: 7AM - 3PM
Thursday: ClosedFriday: 7AM - 4PM
Saturday: ClosedSunday: Closed

Tips

accepts credit cards

Location

229 River St, Guilford

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