Upgrade to a new high-efficiency Carrier system and take advantage of up to $2,000 in trade-in credits (plus $1,000 for a water heater). Up to $2,100 in manufacturer rebates. Up to $2,600 in local utility rebates.

For a limited time, save on our drain clearing service. Book today!

The Cost of Ignoring a Failing Furnace
A furnace that struggles through a Provo winter rarely fails all at once. It gives warning signs first: uneven heating between rooms, a burner that cycles more often than it should, a faint smell of dust burning off long after the unit warms up, or a monthly energy bill that climbs without any change in how you use the system. Each of these points to a component working harder than it was designed to. Left alone, a small ignition problem becomes a cracked heat exchanger, and a worn blower motor becomes a full system shutdown on the coldest night of the year.
At Gillette Services - Plumbing, Heating and Air Conditioning, we treat heating repair as a diagnostic process rather than a parts swap. When your furnace acts up, the cause is not always the part that stopped working. A failed limit switch might trace back to restricted airflow from a clogged filter. A short-cycling burner might be caused by a faulty flame sensor rather than the gas valve. We find the root cause before we recommend any repair, which keeps you from paying for parts that were never the real problem.
How We Diagnose and Repair Heating Systems
Every heating repair we perform in Provo follows a structured sequence. We do not guess, and we do not start replacing components until we know what is wrong. The process protects your equipment and your budget, and it gives you a clear picture of the condition of your system before any work begins.
- Full system inspection: We check the thermostat, ignition system, gas pressure, airflow, and electrical connections to build a complete picture of what the furnace is doing.
- Root cause identification: We trace the symptom back to its source, whether that is a mechanical part, a sensor, a control board, or an airflow restriction.
- Clear explanation and options: We tell you what failed, why it failed, and what your repair choices are before we touch anything further.
- Repair and verification: After the fix, we run the system through a full heating cycle to confirm the problem is gone and the furnace operates within its rated specifications.
This methodology applies whether you own a high-efficiency condensing furnace, a standard gas furnace, an electric furnace, or a heat pump paired with backup heat. Each type has its own failure patterns. Condensing furnaces, for example, drain acidic condensate, and a blocked condensate line can trip a safety switch and shut the unit down entirely. Older single-stage furnaces tend to develop igniter and flame sensor problems as they age. Knowing the equipment lets us work faster and more accurately, which matters when your home is cold and you need heat restored the same day.
Common Problems We Fix Across Provo Homes
Provo winters put steady demand on heating equipment, and the failures we see reflect that. A furnace that runs constantly from December through February wears down in predictable ways. Understanding the most frequent issues helps you recognize trouble early and call before a minor fault turns into a no-heat emergency.
- No heat or intermittent heat: Often caused by a failed igniter, a dirty flame sensor, or a thermostat that has lost its connection to the control board.
- Loud or unusual noises: Grinding, squealing, or banging usually points to a worn blower bearing, a loose belt, or delayed ignition from gas buildup.
- Weak airflow: A restricted filter, a failing blower motor, or leaking ductwork can leave rooms cold even while the furnace runs.
- Short cycling: A furnace that turns on and off rapidly may have a dirty flame sensor, an oversized unit, or an overheating limit switch.
We repair furnaces from all major manufacturers, and we stock the common parts that fail most often so we can complete many repairs in a single visit. When a part must be ordered, we tell you the expected timeline up front. As a furnace company that handles both repair and full replacement, we also tell you honestly when a repair no longer makes financial sense. A furnace past 15 or 20 years with a major component failure often costs more to keep alive than to replace, and we lay out both paths so you can decide with real numbers in front of you.
Why Provo Homeowners Choose Gillette Services - Plumbing, Heating and Air Conditioning
Gillette Services - Plumbing, Heating and Air Conditioning is a locally owned and family-operated company, and that shapes how we handle every heater repair call. We offer fast response times because we know a cold house cannot wait, and we take responsibility for our work rather than passing problems along. We are reliable, we show up when we say we will, and we take the time to understand your home and give you personalized service instead of a scripted upsell.
We take pride in serving this community and giving back whenever we can. Our initiatives include providing free furnace installations to families in need during the winter season, contributing to the HVAC installation for the St. Jude Dream Home, and supporting the Children’s Justice Center’s new facility. We also participate in and donate to a range of other local programs and charitable efforts. When you call us for heating repair in Provo, you are working with your homegrown service pros, and we intend to earn that trust on every visit.















