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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

2 Possible Reasons Why Your Central A/C Unit Is Running But Not Cooling Your Home

by Billie Carlson

Although your home's central air conditioning unit seems to be running normally, you may have noticed that your house is no longer cooling as well as it used to or even not at all. If this is the case, there are a couple of possible reasons why the A/C unit is not fully and efficiently cooling your home even if it seems to be running as it should.

1. Ice Keeps Coating the Evaporator Coil

One potential reason why your home's A/C unit is running without cooling your house is ice formation on the evaporator coil. Normally, this coil is able to pull the warm air out of the air as it passes through the unit, which cools the air before it is pushed back in through the house's vents.

However, if ice keeps coating the coil, the surface area is no longer able to come into contact with the air. As a result, the air will remain warm as it recirculates through your home.

There are a couple of possible reasons why ice is forming on the coil. First, if the indoor thermostat is set to a temperature that is less than the outdoor air, the condensation within the unit will freeze, especially overnight. Try turning your thermostat above the expected outdoor temperature to see if this fixes the issue.

Second, there could be a coolant leak within the unit that is leading to excess ice formation. You will need to have a professional verify and fix this issue.

2. Airflow Through the A/C Unit Is Blocked

Another possible cause of the problem with your running air conditioner's lack of cooling ability is that the airflow through the unit is blocked in some way. If the air filter is clogged up or the external condenser vents are blocked by vegetation, the air will not freely flow through the unit.

If changing the filter and cleaning out the vents does not resolve the issue, there could be a blockage within the condenser itself, such as from dirt and debris or damage. This type of fixed would best be left to a professional.

If you are unable to find and fix the source of your air conditioner's issue with cooling, you will need to have a professional take a look at it. Contact an HVAC contractor who offers air conditioning repair services to have them fully inspect the unit so that they can take care of any problem that they may find.

Reach out to a local air conditioning repair service today for more information.