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Grinding, Squealing and Screeching: Interpreting the Noises Your HVAC Makes

If something is failing or going amiss with your HVAC unit, chances are, your HVAC unit is letting you know something is not quite right. However, most of the cues come in the form of sounds that many of us may overlook. If you hear your HVAC unit grinding, squealing, screeching or squeaking, it is letting you know it needs help. I was unaware of these cues and overlooked them. It ended up costing me a lot of money in repairs. I want to make sure that does not happen to other people, so I made this website. I hope you learn how to interpret the noises your HVAC unit is making so you can get it the repairs it needs before you incur a costly repair, or worse, permanently ruin your unit for good.

Grinding, Squealing and Screeching: Interpreting the Noises Your HVAC Makes

3 HVAC Danger Signs You Should Not Ignore As A Home Buyer

by Billie Carlson

You've happened upon what appears to be your dream home, but don't let the stars in your eyes get in the way of your better judgement. There are some costly repairs and upgrades you may not be so happy to pay for right after closing on a new home and replacing the HVAC system is likely one of them.

Even though replacing an HVAC system may not be a complete deal breaker if you love a specific home enough, it is most definitely something you're going to want to know up front. Before you shake any hands or sign any papers on a new home, get to know some of the HVAC danger signs that could indicate a need for immediate replacement.

The HVAC unit radiates terrible odors.

Don't examine a potential home for you and your family without flipping on the air or heat and letting it run for a bit. The fact is, your nose can tell you a lot about an HVAC unit. If it doesn't take long before the home fills with horrendous odors of mildew and must, burning plastic, or even rotten eggs, it is a surefire sign that something is terribly wrong with the HVAC unit. While each particular odor indicates a certain type of problem, these are the type of problems that usually mean an inevitable replacement is in the near future.

There are signs that the HVAC unit has been overheating.

Take a look at the main unit of the HVAC system and look for the following things:

  • black soot-like residue

  • melted or burnt wiring

  • badly misshapen housing or components

All of these things indicate that the HVAC system has been overheating, which is never a good sign. Signs of a previously overheated HVAC unit could mean that there are inner components damaged that you cannot see. Not only is this usually mean a replacement is needed, it also could be dangerous to continue using the unit.

The HVAC system appears to have been leaking.

Water in the condenser housing, puddles beneath the unit, moisture stains along vent registers--all of these are things that should not be involved with a good HVAC unit. Take a look around the main system inside to look for water,moisture, or water stains. If you spot anything out of the ordinary, it may mean the unit has either been leaking or has some form of water damage on the inside.

For assistance, talk to a repair professional.