Serving Middlesex County, Merrimack Valley and the surrounding areas 978-987-7155


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Winter is never any fun when your heating system isn’t working properly, so why not call upon the experts to ensure you’re well prepared for the impending winter ahead? Keeping your home or business warm is as simple as calling Gregory J. Ostroski Plumbing and Heating. Our team can provide high-efficiency heating, as well as a variety of other heating services. You can well and truly count on our heating services to see you through.

If your heating system at home is substandard, the entire family can suffer. Inadequate heating can cause your home to become damp and cold, or it may even drive up your electric bill. At your place of business, a heating system that has fallen into disrepair, or is no longer fit for purpose, can cause a whole host of problems. Staff may be forced to wear more clothing, and productivity may suffer as a result.

Don’t wait for winter to set in before you take action. Call our experts today! We can work with you to come up with the most efficient heating system for your office space, or commercial building.

We offer “Old School” manners with new age techniques!


As a locally owned and operated business, we have come to know many of our community members. We’re happy to offer a 5% military discount to help you with your bill. We’re proud to be your #1 resource for all dependable heating services. The only service we do not provide is oil burner service.


If you need a heating system repaired or replaced in your home or business, Ostroski Plumbing can help. Our team can take care of:

  • Steam heat repairs
  • Steam boiler repairs
  • Boiler repairs and installations
  • Hot water heaters
  • Steam boiler installation
  • Heating sales, services, and repairs
  • Heating equipment installations
  • Gas piping installation
  • …And so much more