Furnace Repair

Prompt Service · All Fuel Types · Honest Diagnostics

Our Approach to Furnace Repair

A broken furnace in winter is an emergency. J&R Mechanical Services provides fast, accurate furnace repair with honest diagnostics — we fix what actually needs fixing and nothing more.

Common furnace problems include no heat, blower issues, ignition failures, strange noises, short-cycling, and thermostat malfunctions. Our technicians can quickly identify the root cause and get your heat back on.

We repair oil, propane, and natural gas furnaces from all major manufacturers. We carry common parts like ignitors, flame sensors, blower motors, and control boards to complete most repairs in a single visit. Regular furnace maintenance can prevent many of these common issues.

If your furnace is at the end of its life and repair costs do not make sense, we will tell you honestly and help you evaluate replacement options. We never pressure you into a decision.

What Your Furnace Symptoms Usually Mean

Blowing cold air usually points to an ignition failure, a flame sensor coated in oxide, or a limit switch tripping on overheat — often from something as simple as a clogged filter choking airflow. Short-cycling (starting and stopping every few minutes) is commonly a dirty filter, a failing flame sensor, or an oversized furnace. Squealing suggests a blower belt or motor bearing; scraping metal means shut it down and call. A furnace that runs but keeps tripping its safety is doing its job — the safety is telling you something, and bypassing it is how CO accidents happen.

Oil furnaces add their own patterns: a reset button that keeps tripping points to fuel delivery or ignition trouble, and pressing it more than once can flood the combustion chamber with unburned oil. One press, then call us.

How We Handle No-Heat Calls

No heat in cold weather cannot wait, and we prioritize it that way. Our trucks carry the parts that cause most winter failures — ignitors, flame sensors, blower motors, control boards, oil nozzles and filters — so the large majority of no-heat calls are diagnosed and fixed in one visit. You approve the exact repair price before we touch a part, and because our technicians are not on commission, the part we replace is the part that failed — nothing more. Regular annual maintenance is the best way to never need this page in the middle of winter.

Local & Independent

J&R Mechanical Services is an independent contractor — not a national franchise. Our technicians are not commissioned salespeople. We do the work you called us for, do it right, and earn the next call.

More Furnace Repair & Installation Services

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Furnace Repair FAQs

My furnace stopped working — what should I check first?

Check the thermostat batteries and settings, the furnace power switch (looks like a light switch on or near the unit), the breaker, and the filter — a fully clogged filter can trip the furnace’s safety limit. On oil units, confirm you have fuel and press the reset button only once. If none of that works, call us.

Why does my furnace turn on and off every few minutes?

Short-cycling is most often a clogged filter causing overheating, a dirty flame sensor dropping the flame signal, or an oversized furnace reaching temperature too fast. It wastes fuel and wears components, so it is worth fixing promptly.

When is a furnace not worth repairing?

When it is well into its service life and facing a major repair like a heat exchanger, blower motor, or control board, replacement usually wins the math — especially counting the fuel savings of a modern high-efficiency unit. A cracked heat exchanger on an older furnace is almost always a replacement, for safety reasons.

Do you repair oil furnaces?

Yes — oil, propane, and natural gas. Oil-fired equipment is core work for our team, not an afterthought.