Regularly changing your air filter will maximize your energy efficiency and extend the life of your HVAC system. We recommend changing your air filter every 3 months.


What Is MERV? MERV stands for Minimum Efficiency Reporting Value. Or in English, “how effective is your air filter?” MERV ratings range from 1-16. The higher the MERV rating on a filter, the fewer dust particles and other contaminants can pass through it. The most common filter is a MERV 8 rating.

Some examples of what Merv 8 Pleated filters remove:

  • Pollen
  • Dust/Lint
  • Dust Mites
  • Debris
  • Pet dander

Higher Is Not Better. You might think that a higher MERV rating would automatically be better, but it’s not. The higher the MERV rating, the smaller the pores are for air to flow through an HVAC filter. This can create more resistance in airflow than a system is designed to manage, thus making it inefficient.

Where are  air filters located?

  • Air filters are generally found near the main system.
  • Sometimes you can also find them inside the return vents in your home. These vents might be on the ceiling, wall or in the floor and are larger than the rest of the supply vents in each room.

Where do you find the filter size?

  • On the side of your filter. Dimensions range widely and can be anywhere from 10”x10” to 30”x36”.
  • Most, but not all, filters are 1-inch thick. Some homes will have 2-inch to 5-inch thick filters.

Below is our furnace filter order form:


Furnace Filter Order Form
*specialty filters or odd sizes are not available through Alpine Specialty Cleaning.