is a direct to consumer replacement air filter brand, headquartered in the Richmond Hill, Ontario and serving homes and businesses across the country.
We are dedicated to providing quality, U.S. and Canadian manufactured products to our customers.

What Is MERV?

Minimum Efficiency Reporting Value (MERV) is a standard that rates the overall effectiveness of air filters. Higher value MERV rating equates to finer filtration, meaning fewer dust particles and other airborne contaminants can pass through the filter.

Some of the common particles that filters are tested for include pollen, dust mites, textile and carpet fibers, mold spores, dust, pet dander, bacteria and tobacco smoke.

Our Filters and Services

We are fanatical about customer service and are dedicated to offering you the best possible user experience.
We offer free shiping on all orders within the Toronto & GTA Ontario, Canada. We allow maximum flexibility for quantity of filters ordered as we realize storing bulky quantity of filters is not always an option.

With over 600 pleated furnace filter sizes, high quality replacement filters for more than 40 air filter brands (and growing), and large selection of humidifier replacement filters, 4allfilters is your source for low cost replacements for most any air filtration device.

Can’t find it on our site? Contact us!
We are able to provide an even wider variety of custom filters at great prices.