4 signs your HVAC system needs maintenance

April 24, 2020

On a regular basis outside of the shelter in place, our HVAC system is one of the hardest working systems in our home. From the summer heat to the snowy winters, watching and listening for some common issues will save you thousands in the long run. 

With a new system ranging from $1,800 to $5,300, we suggest routine maintenance and checkups especially when the seasons change, to make sure your HVAC system is in tip-top shape. Now we asked the professionals and this is what they had to say. 


Something Stinks

Stinky, strange odors are typically not a good sign for anything and it's no different when it comes to our HVAC system. At the beginning of the season when your first turn on your heating system it has the tendency to blow stale air that can also smell like something is burning. If after 20-30 minutes of running your system the smell has not gone away its time to call a professional there could be an issue with the motor or wiring. 

As always if you smell rotten eggs, turn off your system IMMEDIATELY and call the gas company. Rotten egg smell is a sign of a natural gas leak. 

If your system has a moldy smell, it could most likely be an issue with the moisture 


Only blowing hot air 

It's silly to say and makes you feel like your on the phone with support when they ask you if the computer is turned on, and it can be that simple. Most often resetting our thermostats to the new season is something we forget. A quick switch from hot to cool may do the trick. 

In addition, make sure your thermostat is set to "auto" or "on". When it is switched "on" it means the fan will blow even if the air is not cool. When you switch the thermostat to "auto" the system will automatically turn on when you want to cool or heat your home. When the desired temperature is reached the system will shut off, including the fan. This option is extremely energy efficient and means the fan will not consistently blow as it does when it is on. 

Little or No Air

First and foremost check the filters. Air filters in your home should be replaced every one to three months. If you've just moved into a new home, filters and cleaning the carpets should be first on your list of to-dos. Next up if you have changed the filters, are dirty coils. Dirty coils restrict airflow and cause a decrease in energy efficiency. Routine maintenance will help eliminate buildup. If you allow an airflow issue to fester can cause the compressor to give out. The compressor, unfortunately, is a very important part of the system and can be a very costly replacement. 

Depending on the system, it could possibly cost $1,500 to $2,200 to replace. That is not what I would have in mind for that kind of money. 


Weird Noises. 

Now I am not going to lie, this section did make me chuckle a little as I was putting it together. The home warranty company, American Home Shield, says that there are eight noises to watch out for. These might be minor issues when they begin and will turn into a costly, major issue later on. 

The eight noises are: 

  • Banging
  • Clanging
  • Clicking
  • Buzzing
  • Squealing
  • Screaming
  • Humming
  • Rattling

Now, these sounds can be minor, and they should not be ignored. Some of the typical issues that go along with those noises are, a leak, high pressure in the compressor, something is loose, clogged system, faulty fan, or dirty coils.

Take care of your system with some of these top tips from the professional, and make sure you service your HVAC system prior to season changes so you are not stuck in the dead of winter with no heat or the dog days of summer with no AC. 

As always if you have trouble determining what the problem might be with any system in your home, it is important to contact a professional. We have a great list of reliable trusted professional, please email us at mitchellross@kw.com for our list, we would be happy to share.