What That Noise Is Coming From Your Air Conditioner


Air conditioners are a wonderful comfort during hot summers, but strange noises coming from your unit can be a cause for concern. Our St. Paul air conditioner repair team knows that air conditioners can make a lot of weird noises, and for the most part the majority of them are easy (and safe) to ignore.

The first step is identifying the type of noise. Here are some common ones:

  • Buzzing: A persistent buzzing sound could indicate several issues. It might be a loose electrical component, a malfunctioning fan motor, or even a frozen evaporator coil.
  • Screeching: A high-pitched screech typically points to a failing fan motor, either in the outdoor condenser unit or the indoor blower fan.
  • Banging: A banging noise usually suggests loose parts within the unit, which can be caused by wear and tear.
  • Gurgling: Gurgling sounds might indicate a clogged condensate drain line.

There is one noise that you should absolutely pay attention to, though, because it’s more likely than not a warning sign that something is about to go seriously wrong with your unit. That noise is a prolonged hissing sound.

What Does It Mean When Your AC Is Hissing?

If your AC is making a hissing noise it could mean that there is likely gas leaking from a hose or pipe or an issue with the compressor. While leaks are usually relatively easy to repair, compressors can be expensive. You may be better off getting a new air conditioning unit, but your Hoffman technician can give you their advice on whether to repair or replace it.

The ultimate decision is always left up to you, but if you do decide to replace your system we have a great selection of Lennox systems to choose from and you can save $1,700 when you buy from us.

24-Hour Repairs Available

If the hissing noise gets louder or you start to experience other issues with your air conditioning unit, shut down the system and give the Hoffman Cooling & Heating team a call. We provide 24-hour air conditioner repair service in the St. Paul and Minneapolis areas, so you’ll never have to be without cold air for long. You can reach our team at (612) 255-5883 or contact us through our website today.

By understanding the noises your air conditioner makes, you can take early action to address potential problems. A well-maintained AC cools your home efficiently and avoids the discomfort of a failing unit on a hot day.