Furnace Repair in New Haven, IN

If your furnace doesn’t respond when you adjust the thermostat, it could be as simple as a tripped breaker or as serious as a failed ignition system. Sometimes, the system shuts itself down because a safety sensor detected an unsafe condition, like overheating or poor airflow. We start by checking power, gas flow, and ignition controls to pinpoint the failure. Once we know what’s causing the shutdown, we repair or replace the part and test everything before leaving.

When your system runs but the air never warms up, there’s a breakdown in the heating process. A dirty air filter can block airflow, forcing the furnace to overheat and shut the burner off prematurely. Faulty flame sensors, failed gas valves, or damaged blower motors can also prevent proper heat. We perform a full airflow and combustion inspection to make sure warm air is circulating through your ducts again and the system is safe to operate.

If you hear banging, rattling, or screeching sounds, your furnace is signaling trouble. Banging can come from delayed ignition—when gas builds up before lighting—which needs attention right away. Rattles might mean loose screws or panels, while high-pitched squeals point to worn blower bearings or belts. Our team inspects moving parts, ignition timing, and duct connections, tightening, lubricating, or replacing what’s needed.

Short cycling happens when the furnace shuts down before reaching the set temperature. It can stem from clogged filters, dirty flame sensors, or even improper system sizing. This constant start-stop pattern wastes energy and wears out parts like igniters and control boards. We’ll measure airflow, test sensors, and verify that your system is correctly sized and vented to ensure it runs complete, efficient heating cycles again.

When some rooms feel warm and others stay cold, restricted airflow is often to blame. Dirty filters, blocked ducts, or a failing blower motor can all choke off circulation. Weak airflow makes your furnace work harder than it should and can lead to cracked heat exchangers—one of the most expensive heating repairs. We check duct pressure, fan speed, and air balance to make sure your system heats evenly and safely.

A light dusty smell when you first turn on the furnace for the season is normal. But strong, ongoing odors are not. Burning smells could mean overheating components, while metallic or sharp odors might point to electrical problems or a cracked heat exchanger. Musty smells may indicate mold or moisture in your ductwork. We locate the source, address safety risks, and make the repairs needed to keep your home’s air clean and safe.

Modern furnaces use LED lights to signal specific problems, from ignition lockouts to sensor or pressure issues. A blinking red or amber light is your furnace’s way of reporting a fault. Our technicians read the codes, check corresponding parts, and test all controls to verify safe operation before restarting the system.

If your pilot light won’t stay lit or the electronic igniter fails to spark, the burners can’t ignite, and the furnace can’t heat. This can be caused by dirty flame sensors, a faulty ignition board, or low gas pressure. We clean sensors, inspect the gas valve, and verify all ignition controls are working properly.