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Your HVAC system helps maintain the ideal house temperature all year round. Like other machines, HVAC systems can develop problems. A faulty HVAC is inefficient (and thus costs more to operate), may not cool property or can overheat and stop working.
Here are some common HVAC problems.
Dirty or Clogged Filters
The primary role of HVAC filters is to trap airborne contaminants in air. Over time, filters become clogged and cannot effectively filter out contaminants. Dirty HVAC filters can restrict airflow and lead to contaminated air circulating through your home.
HVAC filters should be replaced every 60-90 days. Homeowners with seasonal allergies should consider replacing their filters more frequently (every 30 days). If you do not know how to replace HVAC filters, reach out to an HVAC repair contractor in Centreville for help.
Thermostat Problems
A broken or malfunctioning thermostat can generate wrong readings instructing the HVAC to work harder and longer. If your HVAC isn’t cooling properly or is using more electricity than usual, check the thermostat to make sure it is set to COOL. Watch out for frayed wiring and replace the batteries if necessary. Also, make sure your thermostat is placed in a cool area.
Refrigerant Leaks
HVAC not cooling properly? Either a refrigerant leak has occurred or your system is running low on refrigerant. If your HVAC is leaking refrigerant, have an independent HVAC contractor, Centreville look into the matter.
Drainage Problems
Drainage problems usually occur when your condensate drain line becomes clogged with dirt and debris. A clogged drain line, evaporator drain pan, heat exchanger or collector box can lead to leaks. To prevent water damage and humidity problems, address these problems promptly.
Ignition or Pilot Control Problems
If your HVAC won’t turn on, chances are that you have a faulty ignition or pilot. Ignition or pilot problems can be caused by a dirty pilot light, thermocouple issues, and clogs.
Unusual Noises
It’s not unusual for an HVAC to make some noises while it’s running, however, loud, weird banging, rattling, and screeching noises coming from your HVAC aren’t normal and can indicate an underlying problem.
High-pitched squealing could indicate a bad fan belt. If you hear rattling, clanking or banging noises coming from your system, the blower motor/assembly may have either come loose or become damaged. Unusual buzzing noises could mean that a refrigerant leak has occurred or the compressor has developed a problem and is malfunctioning.
Frozen Evaporator Coils
Airflow problems (can be caused by a dirty filter, blocked air ducts and malfunctioning fans) can lead to your evaporator coil freezing over. Also, dust and grime can accumulate on your evaporator and condenser coils, affecting the efficiency of your system.
Uneven Heating and Cooling
On a hot, humid or chilly evening, the last thing that you need is an HVAC that heats or cools unevenly. Some common causes of cooling and heating problems include clogged HVAC filters, leaky air ducts, and blocked vents.
Tripped Breakers and Blown Fuses
Blocked vents or clogged filters can force your blower motor to work harder. An overworked HVAC can trip your circuit breaker or your fuse can blow. Inspect your vents and try changing the filters. If the problem persists, consult an HVAC repair technician, Centreville.
Constant Cycling
Short cycling occurs when your HVAC turns on and off frequently. Short cycling can affect your system’s efficiency and result in temperature variations (hot and cold spots) within your home and inconsistent room temperatures. Some common causes of short cycling include dirty air filters, low refrigerant levels, thermostat problems, and frozen evaporator coils.
Blower Runs Continuously
A faulty limit switch or incorrect thermostat settings can cause your blower to run continuously. Make sure your thermostat is set to “auto” not “on”. If you have a malfunctioning limit switch, have a professional replace it.
Here are some HVAC maintenance tips to help you keep your HVAC in good working order..
- Periodically replace air filters
- Maintain the outdoor unit and keep it clean
- Regularly clean your evaporator coils
- Have a professional maintain your HVAC unit bi-annually
AVS Heating and Air Conditioning specializes in local HVAC repair, Centreville. Our HVAC experts understand how different types of HVAC systems work. Their experience and knowhow enable them to develop cost-effective solutions to complicated HVAC problems. To schedule HVAC repair or maintenance, call (703) 457-9028.
