Sometimes, it’s very clear where the source of a problem is. That’s most often the case with self-contained appliances or systems. But your HVAC system isn’t just one thing—it’s an interconnected group of systems, all of which have to work together to provide the home comfort you need.
A problem with one part of your HVAC system may have a significant effect on other parts of the system, or on your overall experience. The trick is that you might not know where in the system the issue began. How can you tell which part of your HVAC system is causing a problem? We’ll go over some clues to help you piece it together.
Noises
If you’re hearing a noise that’s causing you concern, where is that sound coming from? If you hear it most distinctly at a vent, or it seems like it’s within the walls themselves, it’s likely that your issue is in the ductwork. Duct sounds can include rattling, where a loose section is bumping around, and whistling, where air is being forced through a hole or gap.
If you hear the sound most distinctly near the AC indoor or outdoor unit, or near your furnace, that’s probably where the problem is. Sounds like rattling or grinding are most likely moving parts, like fans or motors. Sounds like clicking or buzzing could be electrical in nature.
Smells
Again, consider where an odor is emanating from. Sour or mildew odors coming from a vent may indicate bacteria or mold growing in ductwork, whereas if they’re coming from your indoor AC unit, the bacteria or mold is probably within the condensate pan and drain.
Most other smells are more likely to emanate from your heating or AC system itself. Smells like hot metal, burning plastic, or fish indicate overheating or even electrical fire, so turn off the system and get repairs right away! A sulfurous, eggy smell from a heating system could be a gas leak, so get out of your house and call for help from a safe distance.
Failure to Turn On
If your heat or AC just isn’t coming on, is there something seriously wrong with your furnace or air conditioner? Maybe, but check on a couple of other things first. Could it be a tripped circuit breaker? Or perhaps it’s actually the thermostat. It’s quite easy to accidentally bump a switch into the wrong position or even activate a thermostat program unintentionally.
Short-Cycling
If your heater or AC comes on, but only briefly, then shuts down, and comes on again a few minutes later, repeating that routine over and over, it’s called short-cycling. This is most often caused by either an airflow blockage or a component overheating.
Check the air filter on your furnace or air conditioner. Perhaps it’s simply clogged with dust and in need of cleaning or replacement. If not, the short-cycling may be caused by the motor of the system, which should be repaired promptly so it won’t end up needing to be replaced in its entirety.
There are many other possible causes of short-cycling, and in most cases you’ll need HVAC repair in Blanchard, LA from professionals to properly diagnose it.
Contact us today to discuss repairs or any other HVAC needs.