Common Home Furnace Problems

Thermostat malfunction, excessive humidity, age, and severe temperatures are the main causes of furnace failures. Calling in the experts, or furnace repair specialists, stops the issue from becoming worse. Any brand or model of HVAC system is serviced by Cambridge’s emergency HVAC repair near me service. In this article, we will go over the most typical issues with house furnaces and how to diagnose them.

Malfunctioning Thermostat

In many cases, a broken thermostat will cause the fan to run continuously. Keeping the battery running all the time makes furnaces inefficient and causes further problems with the system due to misuse. Make sure the batteries have not run out or the thermostat has not been inadvertently turned off if the furnace is still not turning on. It is time to get a new, more energy-efficient thermostat for that old one.

Clogged Filters

Filters for furnaces stop dust, pollen, and other airborne particles from recirculating in the home. Depending on the size of the filter, you should replace it every few months to avoid obstructions. A furnace that has trouble drawing air in will eventually fail from overuse. When you notice an increase in dust in and around your vents, a reduction in airflow, and a continual hum from your furnace, it is time to call a furnace tune up near me service.

Pilot Light Issues

To activate your furnace, fire the pilot light, which will ignite the gas. Although additional problems might emerge, the pilot light going out is a regular occurrence. Make sure the blue hue of this little flame is consistent and vivid. It is an indication of high levels of carbon monoxide; if you see it flickering or turning yellow, it is time to call a furnace repair service.

Broken Limit Switch

The limit switch activates a fan to circulate cold air and switches off the burners when the furnace reaches a certain temperature. Your furnace is vulnerable to harm and fire if the switch is malfunctioning. Consequently, a large number of furnace systems will intentionally turn off if an operational limit switch is not present. No matter what brand or type of furnace you have, Cambridge can replace the limit switch.

Faulty Blower Components

If the blower’s ball bearings, fan, belt, or capacitor are malfunctioning, the furnace will not be able to distribute warm air properly. When your furnace stops working in the middle of its cycle, makes a loud squeaking noise, or fails to expel hot air as expected, it might be due to a problem with the blower. The blower capacitor draws power from the circuit board, therefore, a breaker trip or short circuit might be an indication of a furnace problem.

Cracked Heat Exchanger

The air is warmed before it is discharged into the house by use of a heater exchanger, which consists of a coil of heated tubes. These tubes can endure high temperatures, although they are still susceptible to cracking. The heat exchanger is to blame if you feel a chillier air than normal.

Dirty Burners

Burners cannot produce combustion without enough heat to liberate natural gas. When attempting to light, dirty burners make a loud, rumbling noise and fail to generate heat. Burners with blue flames are in good working order, whereas those with yellow or orange flames show that debris is present. A professional furnace repairman should clean the burners since doing it yourself is risky.

Gas Leaks

At the start of the season, when the built-up dust is burned off, you can anticipate a faint burning scent from a furnace. Please turn off the furnace, open the windows, and vacate the premises until the system is inspected if these odors do not go away within one hour or if they smell like gas.
If you notice any metallic or moldy odors, it is important to investigate more. Any mold in your system has the potential to spread allergies and permeate the whole house, endangering the health of everyone living there.

Unusual Noises

Pinging noises may sometimes be heard as a consequence of duct expansion and contraction when the furnace is operating. If you hear loud popping or rattling noises, it could be because a metal flap is loose and has to be tightened to prevent air from escaping. Vent grills are easy enough for homeowners to tighten on their own.
A delayed ignition issue is indicated by strange noises. Attempts to fire the furnace result in a minor explosion caused by gas buildup. Although it is not an urgent matter, it is recommended that a technician should inspect it.

Preventing Furnace Problems

To keep your furnace running well and avoid malfunctions, change the filters often, get it serviced once a year, and clear the vents. Look for obvious problems with the pilot light, blower, ducting, and heat exchanger in your furnace. A furnace can function reliably for many years with regular servicing. Thermostats are simple to change, but they do not last very long.

Finding Professional Furnace Repair Services

Locate a furnace repair service that is affiliated with the manufacturer of your system in the event that your furnace breaks down. Call a HVAC system repair company if you notice any major problems, such as gas leaks, pilot light problems, or a broken heat exchanger; but, minor wear and tear is fixed by a do-it-yourselfer. Any brand or model of furnace is serviced by Cambridge’s round-the-clock emergency HVAC repair near me team. To make an appointment, either give us a call or fill out our online form.