The short answer: You can get away with running your AC without a filter for a short amount of time without hurting your system.
That being said, running your AC without a filter for longer than 6-8 hours can cause serious damage to your AC system and significantly lower the quality of the air in your home.
Below, let’s take a look at how your air filter works and the negative effects of running your AC system without a filter.
Already been running your AC without a filter and want a professional’s help? No problem. Our team of pros would be happy to check out your AC system and make any necessary repairs. Learn more about the air conditioning services we offer or...
Your AC filter has one main job: to block dirt and debris from entering your AC system and therefore your home’s air.
Your AC sucks in air from your home, strips that air of heat and then blows that air back into your home. Your air filter is the barrier in front of your AC’s return vent (the vent that sucks air into your system). Its job is to prevent dirt and debris from getting sucked into your AC system along with air.
When you don’t have an AC filter in place, dirt and debris get pulled into the system. Some of that debris gets blown back into your home and some of it stays and accumulates in the HVAC system. Ultimately, this can greatly lower your home’s air quality and dust and debris can damage your home’s system, resulting in potentially costly repairs or replacements.
As we mentioned above, running your AC without an air filter can cause negative effects, including:
Let’s look at the two biggest issues in more detail...
When you run your AC without an air filter in place, your AC is sucking in “dirty” air and circulating that air back into your home. This causes two main issues for you:
When you run your AC system without a filter, dust gets sucked into your indoor AC unit and settles on a part of that system called the evaporator coils.
Your evaporator coils are filled with refrigerant, which is a substance that absorbs heat from your home’s air.
When there is dust on the evaporator coils, they can’t absorb as much heat from your home as they need to, causing the coils to freeze.
If your evaporator coils are frozen, it means that you’ll run into issues like:
Been running your AC without a filter for a while? Or wondering which type of filter is best for your Phoenix home? We offer service 24-hours a day, 7 days a week, so if you need an AC repair or just want a professional’s opinion on your air filter situation, we’ve got you covered.