Furnace Repair

When your heat goes out, you need someone who answers fast and fixes it right — not tomorrow, right now.

A furnace that stops working in January in central Massachusetts is not a minor inconvenience. Temperatures drop fast, and the longer the system sits unrepaired, the worse the situation gets — especially for families with young children or elderly relatives in the home. At Shelly Heating and Cooling, we built the business around being available exactly when these situations happen. That means 24 hours a day, every day of the year, including weekends and holidays. When you call, you reach a real person who is ready to help — not a voicemail.

We diagnose furnace problems correctly the first time. That matters because a misdiagnosed repair wastes your money and leaves the real issue unresolved. Whether it is a failed ignitor, a cracked heat exchanger, a bad blower motor, or a pressure switch that will not close, we identify the root cause before we recommend anything. We work on all makes and models across Winchendon, Gardner, Athol, Fitchburg, Templeton, and throughout Worcester County. You do not need to wonder whether we can service your specific system — we handle them all.

Before any repair begins, you get a straight answer on what is wrong and what it will cost to fix. No vague estimates, no surprise charges when the job is done. If the repair makes financial sense, we fix it. If the system is too far gone to justify the cost, we tell you that honestly and walk you through your replacement options. The goal is to solve your problem — not to run up a bill. Call Shelly Heating and Cooling at (978) 868-3403 and we will get your heat back on.

What We Offer:

Emergency Furnace Repair — Available 24/7 for furnaces that stop working without warning, including overnight calls, weekends, and holidays across Winchendon and surrounding towns.
Ignitor & Flame Sensor Repair — Two of the most common furnace failures — we diagnose and replace faulty ignitors and flame sensors quickly to restore heat fast.
Blower Motor Repair & Replacement — A failing blower motor means your furnace runs but heat never reaches the rooms. We repair or replace motors to restore proper airflow throughout your home.
Heat Exchanger Inspection & Repair — A cracked heat exchanger is a safety issue, not just a comfort issue. We inspect, diagnose, and advise honestly on whether repair or replacement is the right call.
Pressure Switch & Control Board Diagnosis — Electrical and control failures are some of the trickier furnace problems to diagnose. We work through them systematically and fix the actual issue.
Gas Valve & Burner Service — We service and repair gas valves and burner assemblies on both gas and propane furnaces, common throughout rural Worcester County and Franklin County.
Post-Repair System Testing — After every repair, we run a full operational test to confirm the system is heating properly, safely, and efficiently before we leave your home.

Why Choose Shelly Heating and Cooling for Furnace Repair

24/7 Emergency Response — Furnaces do not fail on a schedule. We are available around the clock, every single day, across Winchendon and the broader central Massachusetts area. When your heat goes out at midnight in February, you will reach a real person at Shelly Heating and Cooling who can help.
Accurate Diagnosis Every Time — Guessing at a furnace problem costs you money and time. We work through the system methodically to find the actual cause before recommending any repair. That approach saves you from paying twice for the same problem.
Transparent Pricing Before We Start — You will know exactly what the repair costs before we touch anything. There are no add-ons after the fact and no charges that were not discussed upfront. Customers across Winchendon and Worcester County trust us because we operate that way on every single call.
All Makes and Models Serviced — We work on every major furnace brand and system type, including gas and propane units. You do not need to track down a brand-specific technician — we handle whatever you have.
Locally Owned, Personally Accountable — Shawn Shelly runs this business and stands behind every repair personally. When something goes wrong, you are not calling a 1-800 number — you are reaching the owner directly.