Heating FAQ — Chapel Hill, NC

Programmable and smart thermostats (Nest, Ecobee, Honeywell Home) let you schedule temperatures to match your routine, which lowers energy use and improves comfort. On a heat pump, correct thermostat configuration also prevents auxiliary or emergency heat from running unnecessarily.

Banging, rattling, squealing or grinding can signal loose components, a failing blower motor, or debris in the system. These are worth a prompt inspection — a small noise today can become a breakdown later.

Older systems use a standing pilot light to ignite the gas. If it goes out, follow the manufacturer’s relighting instructions carefully. If it will not stay lit or you are unsure, stop and call a professional rather than risk a gas issue.

Yes. A cracked heat exchanger can allow carbon monoxide to leak into your home’s air, so it is a genuine safety issue. We will not patch it — we will explain whether a heat-exchanger replacement or a full furnace replacement makes more sense based on the unit’s age and condition.

Use quality air filters and change them on schedule, keep ducts clean, and consider an air purifier. Proper ventilation and humidity control round out a healthier, more comfortable home through the winter.

Emergency heat is a backup setting that runs your heat pump’s electric resistance coils instead of the normal heat-pump cycle. It’s meant for when the heat pump itself has failed and can’t produce heat any other way — not for everyday cold mornings. If your thermostat is stuck on emergency heat during normal weather, that usually points to a stuck relay, a low refrigerant charge, or a thermostat configured incorrectly, and it’s worth having someone look at it, since running on emergency heat costs noticeably more than normal operation.

Every 1 to 3 months during the heating season, similar to summer AC use — more often if you have pets or run the system constantly. That’s separate from your annual tune-up: changing the filter is a five-minute job you can do yourself, while a tune-up covers things like burner inspection, electrical connections, and — on a heat pump — checking the defrost cycle and refrigerant charge.

It can be. A single-zone system sends the same amount of heat everywhere, so rooms far from the unit, above a garage, or with lots of windows often run colder no matter how the thermostat is set. Zoning dampers let you control airflow to different areas independently. Sometimes the fix is simpler, though — a closed vent, a blocked duct run, or poor insulation in that one room. We’d want to see the room before recommending zoning over something cheaper.

Modern heat pumps handle the Piedmont’s usual winter range well, but their efficiency does drop as outdoor temperatures fall, and during a genuine hard freeze they lean more on backup heat to keep up. That’s exactly what a dual-fuel system or properly sized auxiliary heat is for — it’s a normal part of how the system is designed to work, not a sign something’s broken, though it’s worth confirming your system is sized and configured for the coldest nights we actually get here, not just the average ones.

Short cycling usually comes from an oversized system, a dirty flame sensor or filter restricting airflow, a thermostat placed somewhere that gets false readings, or — on a heat pump — a refrigerant issue. An oversized system is a common culprit, since it satisfies the thermostat too fast without running a full cycle. It’s worth having a technician diagnose the actual cause rather than guessing, since the fix differs depending on which one it is.

Options do exist and change over time, so rather than quote you something that might be out of date, ask us when you call — we’ll tell you what’s currently available for repairs and new installs.

A straightforward furnace or heat pump swap is usually a one-day job. If we’re adding ductwork, converting from a gas furnace to a heat pump, or dealing with a tricky install location, plan on it stretching to two days. We’ll tell you which situation you’re in before we schedule the work.

A single tune-up is one visit — we inspect, clean, and test the system once. A maintenance plan puts that on a recurring schedule, typically fall for heating and spring for cooling if you’re on a heat pump, so the system gets looked at before each season rather than after something breaks. Ask us what’s included when you’re comparing options, since plan details vary.

For a short wait, yes, with normal precautions — plug it directly into a wall outlet, not an extension cord or power strip, keep it three feet from anything flammable, and never leave it running unattended or overnight. It’s a stopgap, not a fix, and it’s worth avoiding older circuits if you can, since space heaters draw a lot of power. If you’re waiting more than a day or two, let us know — we’ll try to get you seen sooner if the house is genuinely cold.