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Why is My Outside AC Unit Making a Loud Noise? 

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Why is My Outside AC Unit Making a Loud Noise? 

Metallic Clicking Sound: Debris
There are several reasons an outside AC unit is making a loud noise. The outside AC unit has a large fan that rotates beneath a spiral grate that is part of the unit's housing. The blades on the fan are relatively large with thick metal blades. If the grate on the housing also has large spaces, debris such as twigs, acorns and small branches fall between the grate and fan causing the fan blades to beat against the debris. The sound this makes is a metallic clicking as debris hits fan blades. If this is the case, turn the unit off and carefully remove the debris without damaging the blades or grating.  Should the debris be difficult to remove, you will need assistance from A-Plus Quality, HVAC services in the Greater Toronto Area. A certified technician will remove the grating from the housing and extricate the debris that is causing the loud noise. 

Screechy and Metallic Sound: Fan Motor
If the loud noise from the outside AC unit sounds more screechy and metallic, the fan motor may need repair or replacement. 

Squealing Noise: Fan Belt
If there is a loud squealing noise, the problem in this case may be the fan belt. When a fan belt makes a squealing sound, turn the unit off to prevent further damage and contact us. The belt will need to be removed and replaced by a certified technician from A-Plus Quality, HVAC services in the Greater Toronto Area.

Gurgling Sound: Refrigerant Leak or Condensate Drain Line
One other noise that occurs with an AC unit is a gurgling sound when the unit is operating. This may be due to a refrigerant leak or the noise is coming from the condensate drain line. With this problem, turn the unit off until an HVAC professional determines where the gurgling sound is coming from. If there is a refrigerant leak, this requires repair and replacement of refrigerant. 

How to Avoid Costly Problems with an Outside AC Unit
One of the most timely and cost-effective ways to avoid problems with an outside AC unit is regular maintenance. In addition, when you do notice a problem it is best to have a certified technician from A-Plus Quality, HVAC services in the Greater Toronto Area, check out the issue and make any necessary repairs. If you are having troubles with your air conditioner, contact us today.

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FAQ

  • Why should I maintain my Furnace or AC?

    An annual maintenance will extend the lifetime of your heating and cooling unit. The technician will diagnose and repair any problem with the unit before it fails, so you won't need to worry about any problems when the weather gets very hot in the summer or extremely cold in the winter.

  • Why is there ice building up on the copper pipes?

    There can be many reasons why the refrigerant pipes are freezing up but the most common issue is low refrigerant levels. If your AC unit has ice buildup turn off the unit for at least 4 hours and call us at 416-410-0337

  • Most common Boiler Issues

    - Boiler fails to ignite
    - Low pressure
    - Strange Noises
    - Boiler is not responding to the thermostat
    - Cold Radiators
    - Boiler leaking or dripping
    - Boiler cycling very fast
    - Available Hot water but No Heat

  • Water is Leaking on my Furnace

    Water falling on to the furnace can harm your heating unit by affecting the control boards and other components enclosed in the furnace. There can be many causes to the water overflow, but the most common cases in the summer is the ice build up inside the evaporator coil due to low refrigerant level. Water build up can also be due to the evaporator coil having a crack on the base, if this is the case contact us by booking an appointment or call us today to have a technician come have a look at your unit and repair this issue before it causes excessive damage.  

  • What is a mini-split?

    By definition, and simply put, a “Split System” is a heating and air conditioning system which has two main components, the indoor unit and outdoor unit. In short, the indoor unit absorbs heat energy in the cooling mode, and the outdoor unit rejects the very heat absorbed by the indoor unit. And the cycle is repeated until the set temperature is met. Although the indoor and outdoor units are located in physically different, hence “split” locations, they are connected and operate as, one system; continuously circulating refrigerant liquid and vapor by means of interconnecting, dehydrated copper refrigerant lines, commonly referred to as a “Line Set”.

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