Discount Water Filters and Air Filters at Discount Filter

When we protect your filter purchase with our No Worries Guarantee, we mean it!

No Worries...
  • Your filters are guaranteed to be the right fit!
  • Our products are price match guaranteed!
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  • You’re guaranteed to find expert help!

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Whole Home Solutions

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Tier1 Water Whole Home Solutions are configurable, ensuring your filtration solution meets your specific needs. Depending on the configuration you select, your system features stages of powerful filtration, including sediment reduction, carbon and KDF filtration, salt-free softening, and ultraviolet (UV) disinfection. Tier1 Water systems are easy to install and maintain, ensuring clean water throughout your home is effortless. Each system arrives complete, self-contained, pre-filled with filtration media and ready to use.

For more information please visit our Frequently Asked Questions page.


Hard water reduces the life of your pipes and appliances and can damage your clothes and skin.

85% of Americans suffer from the effects of hard water.

Search your zip code below to discover the level of hardness in your area.

Hardness levels are based on averages taken
from EPA water quality samples in your area.

How many Grains per Gallon (GPG) do you have?
Under 3 GPG: Low Hardness
3-7 GPG: Moderate Hardness
7-10 GPG: Hard Water
10-14 GPG: Very Hard Water
Over 14 GPG: Extremely Hard Water

GPG: Grains per Gallon is the industry standard unit of measure for the amount of hardness in a given water source.

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