Replacement HVAC Filters

Maximize your energy efficiency and the lifespan of your AC or furnace by replacing your HVAC filters on a regular basis. Whatever size you need in your home or business, we have you covered with an expansive selection of standard, hard-to-find, and custom HVAC air filter sizes. Enjoy the following features when you purchase replacement HVAC filters with Factory Direct Filters.

  • 100% synthetic media
  • High filtration efficiency
  • Options of 1, 2, and 4-inch depths and deep-pleat filters
  • Filtration efficiency ratings of MERV 8, 11, and 13 available
  • Radial wedge pleat configuration for optimal pollutant-holding capacity
  • Heavy-duty frame with moisture-resistance
HVAC Air Filters

HVAC Filters By Size

HVAC Filter Replacement: We Make It Easy

Replacing your business or residential HVAC filters isn't difficult. The first step is determining the size filter (or filters) you need. If the size isn't printed on your old HVAC filter or if you feel like that one never quite fit correctly, follow our step-by-step guide to measuring your filter. Once you know the size, you can choose which MERV rating is right for your home or business. Each one has its pros and cons, so it may help to check out our Shop by Merv page for a quick summary of each. Once you receive your replacement HVAC filters, follow the simple installation instructions in our Helpful Tips to make sure you finish the job right.

One last way to save time and effort: opt into our subscription service and have your HVAC filters shipped directly to you on a regular basis. It doesn't get easier than that!