Unfortunately, “out of sight, out of mind” is easy with HVAC systems. Air conditioners and furnaces need regular attention to perform efficiently.
However, maintenance lapses often happen because a good AC unit works seamlessly in the background, pushing air through invisible ducts, silently heating or cooling your home. The system does its job and melts into the background, making it easy to forget about.
While some maintenance items can be a hassle, there’s one that’s simple — replacing your HVAC filters. Just about anyone can replace HVAC air filters, and it can be done without any tool more special than a stepladder.
How to Replace Your HVAC Filters
First, get the right filter for your system. You can buy them by the box from your nearest hardware store, supercenter, or online retailer. If you’re not sure what filters you need, check the filter that’s already in place! Just find the dimensions on the side of the filter.
When you’re replacing your HVAC filters, make sure you pay attention to direction arrows. They need to be placed in the right direction for airflow. When you’re done, close the vent, put away your stepladder, and check “replace filter” off your list!
Why Is It Important to Replace HVAC Filters?
Your air conditioning system does more than just change the temperature. It also removes allergens, dust, pollen, and other contaminants from the air. The system does this by trapping them in the filter. That’s why used-up filters look like they’re covered in dryer lint when you take them out!
If you don’t replace your filters on a regular basis, several problems can result. First, full filters block air. Not only does this make your HVAC system less efficient at changing temperatures, but it also shortens system life.
Second, filters can only collect so many particles before they become saturated. Once the filter is full, contaminants will start building up in your system’s ducts.
Which HVAC Filters Give Best Air Flow?
The best HVAC filters offer a balance between filtration and airflow. While high-efficiency particulate air (HEPA) filters can remove up to 99.97% of airborne particles that are 0.3 microns or larger, this is drastic overkill for most homes. Typically, these filters are used in hospitals or clean rooms.
Most home HVAC filters are minimum efficiency reporting value (MERV) filters. Rather than being types of filters for HVAC systems, MERV is a rating system.
You’ll see filters with MERV ratings as low as 1-4, which can filter out pollen, dust, and clothing fibers. Between 5 and 8 will filter out mold spores, and 9 to 12 filters car exhaust fumes and lead dust. Most HVAC companies recommend filters around this range.
Thirteen and above will filter out more contaminants (such as tobacco smoke) but restrict airflow.
Get Expert Advice on HVAC Filters
If you need to know which HVAC filters are right for you, talk to the experts at On The Spot Air Conditioning & Heating! Whether you need the least restrictive airflow or superior filtration, we’ll help you find the best filters for your system. Contact On The Spot Air Conditioning today!
