When an HVAC system in Phoenix is running properly, there is an easy exchange of air from the inside and outside, which is just the opening pests need to get into your home. When a system is well-maintained there are several safeguards to keep unwanted guests from sneaking into your home, keep in mind though, they only need a small area to sneak in.
Different regions will have different vermin problems, so be aware of the types of pests most common to your area. When you know brings them to your indoor space, you can then figure out how to cut off their entry and eliminate them once they’ve entered your home. Fortunately, what is good for your HVAC system is usually beneficial in pest prevention.