Duncan sits right in the middle of the I-85 corridor between Greer and Spartanburg, and a lot of folks here work long shifts at the plants and distribution centers nearby. When you’re gone 10 or 12 hours at a time, the last thing you want is to walk back into a cold house because the furnace quit while you were at work. The same goes for local shops and offices that need heat ready before the doors open.
Chisholm Plumbing, AC & Furnace Repair repairs residential and commercial heating systems throughout Duncan. We work on gas furnaces, electric furnaces, heat pumps with furnace backup, and the heating equipment found in small commercial buildings. Our team gives you upfront pricing before any repair, and we’re available 24/7 when a breakdown can’t wait.
When you spend most of the day away from home, it’s easy to miss the early warning signs of a failing furnace. Pay attention to what you notice when you get back from a shift or first thing in the morning. These are the signs that usually mean a repair is on the way.
If you have a smart or programmable thermostat, check its history for missed heating cycles. That can help our technician narrow down the problem faster when we arrive.
Power surges are a bigger factor here than most people expect. The Upstate gets plenty of strong thunderstorms from spring through late summer, and lightning or a flickering grid can damage a furnace control board while it sits unused. Since nobody runs the heat in July, that damage often goes unnoticed until the first cold night in fall.
Duncan’s housing is also a real mix. Homes near the older part of town tend to have aging furnaces, worn ductwork, and wiring that was never meant to handle modern thermostats. The newer subdivisions that went up as the area’s industry grew usually have heat pumps or high-efficiency furnaces, where we see more trouble with sensors, condensate drains, and control settings.
On the commercial side, small offices, shops, and service businesses rely on rooftop units and gas heaters that work hard through the winter. Dirty burners, failed ignition controls, and worn belts are common in these systems. For any building, a filter clogged with red clay dust and spring pollen can still be the reason a furnace overheats and shuts down.
We know a lot of Duncan residents work first, second, or third shift, so we try to schedule visits at a time that fits your life. For businesses, we aim to keep downtime short and work around your hours when possible. If your heat goes out in the middle of the night, our emergency line is always open.
Every repair starts with a full look at the system. Our technician checks the thermostat and wiring, control board, ignition system, burners, blower, safety switches, and venting. We also test for carbon monoxide and inspect the heat exchanger, because getting the heat back on only counts if it’s safe to run.
When we find the problem, we explain it clearly and give you the price up front. You decide whether to move forward, with no pressure either way. Once the repair is done, we test the system through a full heating cycle so you can head back to work knowing your home or building will stay warm.
Chris works second shift and got home around midnight on a cold November night to find his house sitting at 58 degrees. The thermostat was calling for heat, but the furnace wasn’t responding at all. He called our emergency line, and a technician was on the way shortly after.
After checking the power supply and thermostat wiring, our technician found the problem at the furnace control board. It showed scorch marks near one of the relays, likely from a power surge during one of the summer storms. The board had held on just long enough to fail once the heating season started. He replaced the board, checked the rest of the electrical components for damage, and ran the furnace through several cycles.
Chris had warm air coming through the vents before he went to bed. It’s a good reminder that having your furnace checked in early fall can catch storm damage before the cold weather arrives.
Our home base in Greer is just down the road from Duncan, so we’re never far away when you need us. We’re a local team that treats every customer like family, whether you’re a homeowner or running a small business. Here’s what you can count on.
If your furnace isn’t keeping up, reach out to Chisholm and we’ll get your heat back on.
Yes. Power surges can damage control boards and other electrical parts even when the furnace isn’t running. An early fall checkup can catch that damage before you need heat.
Yes. We repair heating equipment for offices, shops, and other commercial buildings, along with residential furnaces and heat pumps.
A short cycling furnace turns on, runs for just a few minutes, and shuts off again over and over. It can point to a dirty filter, a bad sensor, or an overheating problem.
A tune-up typically covers cleaning and testing the burners, ignition, flame sensor, blower, safety controls, and venting, along with a filter check and carbon monoxide test.
We’ll do our best to find a time that works for your schedule. For heating emergencies, we’re available 24/7.
