We serve a wide area across central Massachusetts and southern New Hampshire. This includes Gardner, Athol, Fitchburg, Leominster, Templeton, Ashburnham, Westminster, and many towns throughout Worcester County and Franklin County. We also serve communities in Middlesex County and southern NH towns like Jaffrey, Rindge, and Peterborough. If you are not sure whether we cover your area, just call and we will let you know right away.

A furnace that needs frequent repairs, produces uneven heat, or is over 15–20 years old is usually a strong candidate for replacement. If it is still relatively new and the repair cost is reasonable, fixing it almost always makes more sense. We give you an honest assessment — we are not going to push a replacement when a repair will do the job. You will get a clear breakdown of both options so you can make the right call for your home and budget.

Yes — we service and install gas, oil, and propane heating systems, including furnaces and boilers. Older homes throughout central Massachusetts often have oil boilers or baseboard heating systems, and we have extensive experience working on them. We also handle conversions when homeowners are looking to switch fuel sources. Whatever type of heating system you have, we can work on it.

Most HVAC systems should be serviced at least once a year, with twice a year being ideal — once before heating season and once before cooling season. Regular tune-ups keep the system running efficiently, reduce energy costs, and catch small issues before they become expensive repairs. Skipping maintenance is one of the most common reasons systems fail prematurely in New England homes. A quick seasonal visit is far less costly than an emergency call in January.

Shelly Heating and Cooling is a locally owned and operated business based in Winchendon, MA — not a franchise or a large regional chain. Shawn and Julia Shelly own and run the business themselves. Being local means you are working with people who live and work in the same community you do. That makes a real difference in how jobs get handled and how much they care about the outcome.

Absolutely — that is actually one of the main reasons homeowners in this area choose mini-splits. Older homes in Winchendon, Athol, and Gardner often lack central ductwork, and a ductless system is one of the cleanest solutions available. We install single-zone and multi-zone systems depending on what your home needs. The installation is typically completed in one day and gives you both heating and cooling in one system.

Call us directly at (978) 868-3403 — we answer 24 hours a day, including overnight and on weekends. Do not wait until morning if the temperature in your home is dropping, especially if you have children or elderly family members in the house. We will diagnose the problem and work to get your heat restored as quickly as possible. In the meantime, keep interior doors closed to retain warmth in the rooms you are using.