Common Home Furnace Problems
It can be challenging to know when a furnace has a significant issue that requires professional help or if it's a quick fix.
A furnace should consistently provide heat for a home. Unfortunately, some will experience problems or malfunctions, usually at the most inopportune time. It can be challenging to know when it's a significant issue that requires professional help or if it's a quick fix.
Here are common problems that will help diagnose any issues a home furnace could face.
Thermostat not working
A malfunctioning thermostat will cause the fan to run nonstop. An easy way to diagnose a thermostat issue is to set it to auto and change its settings. Set it to a high temperature and see if the fan continues to run, then try a low setting. If the fan continues to operate, the problem is likely a malfunctioning thermostat. Contact a professional heating expert for proper thermostat replacement.
Filters
Replace furnace filters approximately every three months. If they become dirty or clogged, a furnace's intake air will be limited and could cause the furnace to operate inefficiently. Periodic inspection of filters and replacing them when dirty can help extend the furnace's life.
Strange noises
If the furnace makes odd noises, the culprit is typically the ducts or panels. Rattling noises could be loose or ill-fitting panels that rattle when the blower turns on and can quickly tighten. Popping or pinging sounds are most likely normal ductwork expansion and are not a cause for concern. They can make these sounds when the ducts go from hot to cold or cold to hot.
Not blowing air
If the furnace isn't blowing any air, it's typically one of two issues. First, check to ensure the blower is free from debris or obstruction, as this is usually the problem. If there's a flashing red light on the blower, this is an indication of a deeper issue. Contact a furnace specialist who can further diagnose the problem.
Over-cycling
Several issues could influence furnaces that turn back on quickly after a cycle ends. Common causes include clogged filters, incorrect airflow, or setting the thermostat too high or too low. Due to the many factors involved, one should consult a specialist to diagnose the culprit.
Pilot light
The pilot light is essential for a gas furnace to operate correctly. Therefore, any changes to its appearance indicate a problem. For example, if it's flickering or yellow, this could be an indication of an excessive buildup of carbon monoxide. If the pilot light's appearance changes, it's necessary to contact a professional sooner rather than later.
Invest in preventative maintenance
Even without obvious furnace issues, every homeowner should occasionally have a professional perform a furnace inspection and tune-up. This could prevent costly issues from occurring in the future. In addition, problems with improper airflow or thermostat issues can be expertly diagnosed and repaired.
Above and Beyond Air Conditioning & Heating is a San Antonio residential and commercial heating and air conditioning company dedicated to providing the highest level of home comfort. Call us today at 210-897-8658.
