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Your heating, cooling, and air conditioning (HVAC) system is responsible for keeping your home comfortable and habitable through climate control. Taking care of your system by performing regular maintenance is a good investment for homeowners. Though there are many DIY tasks you can perform to help your HVAC system’s overall health, the time may come for you to call in a professional. Here are 5 signs that your HVAC needs professional servicing.

1. Your Energy Bill Is Suspiciously High

Heating and cooling make up almost half of your energy usage. In seasons where your air conditioning or heating system is often on, be sure to compare your monthly energy bill with the energy bills from the same month last year. Energy bills should be roughly the same from year to year, so an unusual spike in energy usage can indicate that your HVAC system is not functioning optimally.

2. One Room Is Colder or Hotter

If you notice that one room is much warmer than other rooms, this might mean that your HVAC system needs to be checked. The problem could be because of equipment malfunctions or problems with the ductwork. This could also be an indication of poor insulation in that room. If you are unsure, consider contacting a professional.

3. You Hear Sounds When Your Ventilation System Kicks on

Be wary of unpleasant sounds coming from your vents. Grating, banging, clicking, hissing, or other high pitched sounds coming from your air conditioning unit show that something is wrong inside the unit. Failure to address this problem can result in a permanent breakdown of your unit, a problem which can be very costly. If you hear any strange sounds, consider contacting a professional AC technician to check your unit.

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4. Bad Smell Coming From the Vents

Strong, foul smells coming from your air conditioning vents usually mean that your unit’s wire insulation has burned out. If your vents smell like musty old socks, then this can indicate that bacteria or mold has grown within the ventilation system. This issue only becomes worse with time, so immediately addressing the issue with a service expert is a must.

5. Your HVAC Is Over 15 Years Old

Performing regular maintenance on your HVAC system can help improve its lifespan and efficiency. But once you hit the 15-year mark, it is a good idea to have someone inspect your HVAC for its overall health. You might even consider replacing it with a more energy-efficient model to help you save on your overall electric bill!

Problems with your heating and the cooling unit only become worse as time goes on. If you find yourself having any concerns when it comes to your HVAC system, it is best to address those concerns sooner rather than later. After all, when it comes to such an important part of your home, it is best to be safe than sorry. Consult your local professional with any questions or concerns you might have so that you can rest easy in the summer and winter seasons.