Leave Spooky Noises to Your HVAC Contractor

Who ya gonna call – your HVAC contractor of course! When you hear funny noises coming from your heating and air system, call your HVAC contractor first. They’ll assess the sounds and determine the cause. If a repair is necessary, a quality HVAC contractor can have your system purring like a kitten in no time.

Call an HVAC Contractor if You Hear These Odd Sounds

Most HVAC systems make some noise during operation. You may hear air as it passes through the vents, a hum as the unit operates or a noise at start-up or at shut-off.

If, however, you find more conspicuous noises interrupting your home life, call a quality HVAC contractor like Mills Heating & Air.

For more than 30 years, Mills Heating & Air has helped Florida residents relax in comfort. When you call, we’ll schedule a visit with a licensed technician. He or she will thoroughly inspect your system from top to bottom.

He or she will uncover any excess wear and tear or malfunctions. If it can be addressed through a regular tune-up, he or she will handle it. If you hear strange noises, such as clanks, hisses or rattles, call us.


The most common culprit of clanks in your HVAC unit is loose parts. These may be loose blades in the blower motor fan or loose pipes experiencing friction. Clanks are fairly serious noises because it’s a short distance from clanks to lasting damage to your HVAC system.

We recommend you shut down your system until your HVAC contractor arrives.


A hiss sound suggests air leaks in your system. If this sound appears to be inside the walls, it’s likely your ducts have a leak. More than a noise annoyance, air is in your walls when it should circulate through your home and heat or cool the space.

Call a reputable HVAC contractor like Mills Heating & Air to evaluate the situation and determine a cause. The issue could be with the ducts or possibly an ill-fitting filter. Sometimes there are gaps in the seal and produces the hiss noise. Call Mills to be sure.

Squeals or Shrieks

Shrieks or squeals are most likely motor bearing or belt problems. We regularly see this issue during regularly scheduled maintenance and can address it during tune-ups.


Generally, debris or a similar obstruction creates a rattle. If you hear it in your external unit, it may be yard waste or something blown inside during a storm. Turn your system off and eliminate power to the unit before you attempt to remove any debris.

If it’s something small, like leaves or twigs, you may safely remove the debris yourself. However, if you suspect damage to the condenser coils, fan or compressor, please give us a call so we can safely take a look.

For internal system problems, it’s always best to call an HVAC contractor like Mills Heating & Air. Our licensed technicians are best equipped to access your internal HVAC unit and its components.  

How to Prevent Scary Sounds with Your HVAC Contractor

  1. Change your air filters regularly. Good airflow through your HVAC system allows your heating and cooling to circulate well. When air filters are dirty or clogged, it impedes the airflow and strains your HVAC system.
  2. Schedule a tune-up of your heating and air system twice a year. We recommend in the spring before the hottest temps and once in the fall to prepare for changes in the weather.
  3. Invest in a maintenance agreement with a quality HVAC contractor like Mills Heating & Air. We will visit, completely inspect and tune-up your HVAC equipment for optimal efficiency.

Mills Heating & Air is Your Quality HVAC Contractor

For more than 30 years in the Okaloosa, Santa Rosa, Bay or Walton county area, Mills Heating & Air has served homes and businesses with heating and cooling needs. If you need an HVAC contractor in northwestern Florida for air conditioner service, repair and installation needs, call us! We are also experts in indoor air quality!

Mills Heating & Air offers multiple financing options to keep budgets intact. When you spread out payments, it allows you to enjoy better comfort and efficiency right away. Not ready to replace? Mills can repair and maintain any brand.

Contact Mills Heating & Air to discuss air conditioner and indoor air quality options. For lower bills, call Mills!

Vendor Logos
225 Green Acres Road, Fort Walton Beach, FL 32547

17747 Ashley Dr., Unit B, Panama City Beach, FL 32413

Facebook Footer