24/7:  (636) 397-1237

Search

HVAC Sounds and What they might mean

Updated: Jan 3


What's that Sound?


Has your heating and air conditioning system ever made strange noises?


Here’s a breakdown of some of the strange sounds people hear from their HVAC equipment and what these sounds might mean regarding your heating and air conditioning system.


Hissing – If you hear a hissing sound coming from your heating and air conditioning system, it could indicate a leak in the system or duct. Have a certified HVAC technician check for leaks.


Clanking – A clanking noise could indicate a loose part in the HVAC system. Have a certified HVAC technician tighten or replace the loose part.


Squeaking – If you hear a squeaking sound coming from your HVAC system, this could indicate a worn fan or a malfunctioning motor. Have a certified HVAC technician fix or replace the part.


Screaming – If you hear a screaming noise coming from your heating and air conditioning equipment, this could indicate high internal pressures within the compressor or a refrigerant leak. Contact a certified HVAC company to check refrigerant levels and to examine the compressor.


Grinding – A grinding sound coming from your heating and air conditioning unit could indicate a blower motor is failing. Have a certified HVAC technician check the blower motor to make sure it is working properly.


Rattling – If you hear a rattling noise, it could indicate something is stuck in the air intakes or vents. Make sure to change your air filters regularly to prevent blockages. Having dirty filters can cause your furnace and air conditioner to run below capacity costing you more money to heat or cool your home. If you can't find something stuck in the vent, contact a certified HVAC company to find the problem and fix it.


Banging – If you hear a loud banging noise coming from your furnace or air conditioner, it could indicate that internal components in the system have come loose or broken part. Contact a certified HVAC company to tighten the parts or to replace the broken parts with new ones.


Clicking – A clicking sound coming from your furnace or air conditioner could indicate defective controls or a failing thermostat. Replace the defective control or failing thermostat or have a certified HVAC technician fix the problem.


Buzzing – If you hear buzzing coming from your furnace or air conditioner, it could indicate loose parts or debris stuck inside the system. Contact a certified HVAC company to remove the debris or replace broken or loose parts.


Humming – A humming sound could indicate electrical problems or loose wiring. Have a certified HVAC technician fix the problem or loose wiring.


Bottom line, if you are hearing any strange sounds coming from your furnace or air conditioner and want it checked out by a certified HVAC technician, contact Faszold Service Co. at 636-397-1237 or schedule service call online.

0 views

faszold heating and cooling

Heating and Air Conditioning Comfort Specialists serving the St. Charles County and St. Louis County area since 1980.

Main Office

1613 East Terra Ln

O'Fallon, MO 63366

636-397-1237

sales@faszold.com

 

Sudoku Answers

Office Hours

Mon - Fri: 7:30am - 5pm

24/7 Emergency Service

Call 636-397-1237 and follow the prompts if outside our normal business hours.

  • White Facebook Icon
  • Instagram - White Circle
  • LinkedIn - White Circle
Faszold White Lettering Logo Transparent