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How often you change your air filter depends on your home and lifestyle. Things like how many people are in your home, pets, the season, the size of your home, the air quality where you live, and more all impact your HVAC system. The best practice is using visual indicators to determine when it needs changing by checking if light can pass through it. If you can’t see any light, it’s clogged and needs to be changed.

For families or individuals who experience regular or intermittent allergic reactions to airborne particles, a whole-house air filtration system can offer much relief. Regardless of the type of home air filter you install, you'll likely experience some benefits in the form of cleaner indoor air. If you're uncertain, consider a portable filter system to start.

Inexpensive filters do an effective job of keeping your HVAC system clean and running properly. However, they usually aren’t the best at filtering out allergens and other pollutants. So, if you have pets, several people in your household, or allergies and asthma, you’ll want to invest in a higher-quality filter.

It’s not customary to tip HVAC technicians, and most professionals won’t expect it. However, it’s a nice way of showing your appreciation for the work they do, especially if they come out in inclement weather or on a weekend or holiday to fix an emergency issue if your heat or AC goes out in extreme temperatures. A good tip would be between 10% to 20% of the total bill, depending on how above and beyond the tech goes for your repair and on the total cost of your HVAC repair or service. For something like a routine tune-up or scheduled maintenance, tips aren’t expected.