Indoor Air Quality

Indoor Air Cleaners & Purifiers
Humidifiers
Dehumidifiers
UV Lamps
628 Products
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Medium Learn More
Medium
Medium refers to the substance that carries heat through the heating system. Systems are either designed to use either Hot Water or Steam as a medium, and components are usually specific to one or the other.
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Maximum Sound Level (dB) Learn More
Maximum Sound Level (dB)
Sound levels are measured in decibels (dB). The lower the decibel rating, the less noise the product makes. As an example, a ticking watch is 20 dB while on the other end of the scale, a lawn mower is around 90 dB.
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Originally $512.00$379.00
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Free Shipping
*This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges map apply, see our full shipping policy for more details.
In-Stock
Flanders - Pre Pleat 40 LPD - 24'' x 24'' x 2'' - Standard Capacity Pleated Filters - MERV 8 - Synthetic Media - Box of 12 - MPN: 80055.022424
Item#: 27525
Model#: 80055.022424
Brand: Flanders
$92.21
Factory-Direct
Clean Comfort - AM11-2240-5PP - 22"x40" - Perfect Platform AHU/Furnace Upflow Base - 5 1/4"
Item#: 26888
Brand: Clean Comfort
$211.00
Free Shipping
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Free Shipping
*This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges map apply, see our full shipping policy for more details.
In-Stock
$48.99
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Subscription Eligible
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Subscription Eligible
*This product is Subscription Eligible and can be set up to auto-deliver filters to your home at a discounted price. You select the filter quality, delivery frequency, and quantity.
In-Stock
$225.00
Free Shipping
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Free Shipping
*This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges map apply, see our full shipping policy for more details.
In-Stock
Flanders - Pre Pleat 40 LPD - 12'' x 24'' x 2'' - Standard Capacity Pleated Filters - MERV 8 - Synthetic Media - Box of 12 - MPN: 80055.021224
Item#: 27512
Model#: 80055.021224
Brand: Flanders
$69.64
Factory-Direct
$419.00
Free Shipping
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Free Shipping
*This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges map apply, see our full shipping policy for more details.
In-Stock