The air filter is typically located at the point where the return duct enters the air handler. Larger houses often have more than one HVAC system. Each system will typically have at least one air filter. Therefore, your home may have air filters located at the air handler AND in the returns.
How often should I change the air filter on my lawn mower?
You should replace your air filter once per season or after you have put 300 hours on it. Frequent dust conditions may warrant more frequent cleaning and replacement of the lawn mower air filter.
How often should air filters be changed?
Generally, most air filter manufacturers and HVAC companies recommend changing your air filter every 90 days, or 3 months. That can change based on where your home is located (ex. dusty, dry climates), if you have any pets, and the age of your system and equipment.
Can a lawn mower run without an air filter?
You can run a lawn mower without an air filter. For a short while it’ll run just fine, maybe even better than before if you had a dirty filter fitted. But you shouldn’t be running a lawn mower without the air filter for long periods. It’ll damage your mower’s engine.
Does lawn mower air filter need oil?
Paper filters shouldn’t really ever have any oil on them. But if your mower has a foam air filter, you should be aware that a light coating of oil is completely normal. In fact, it’s necessary. It’s actually this oil that prevents dust and dirt from passing right through it.