• No minimums, no surprises — we ship every order for free! We’ll get your filters out the door fast so you can enjoy clean air and water without paying extra.

  • Shop with confidence! If you're not completely satisfied with your purchase, you have up to one year to return it for a refund or exchange. We stand behind every filter we sell.

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  • Every order is carefully packed and shipped by our team in Indiana. Your purchase helps support American jobs and hardworking families right here in the Midwest. Our AIRx Furnace / AC Filters and ClearChoice Fridge Filters are made in the USA.

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  • No minimums, no surprises — we ship every order for free! We’ll get your filters out the door fast so you can enjoy clean air and water without paying extra.

  • Shop with confidence! If you're not completely satisfied with your purchase, you have up to one year to return it for a refund or exchange. We stand behind every filter we sell.

    Learn More

  • Every order is carefully packed and shipped by our team in Indiana. Your purchase helps support American jobs and hardworking families right here in the Midwest. Our AIRx Furnace / AC Filters and ClearChoice Fridge Filters are made in the USA.

Cart 0

We don't know what's in your water,
but we know there's nothing in your cart.

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Replacement 45 Humidifier Filters

Aprilaire #45 Water Panel Evaporator, 2-Pack
5
118 review(s)
◆
 
Average rating 4.8/5
5 stars
(102)
4 stars
(12)
3 stars
(2)
2 stars
(0)
1 star
(2)
$31.25
Case of 2 $62.49
In Stock
Ships Monday
2 Pack Selected

Aprilaire Replacement For 45 Humidifier Filter

  • Original Factory Replacement Water Panel Evaporator for Aprilaire Humidifier
  • Replaces part # 45
  • Fits model 400 humidifier

AprilAire H445EZ1A EZKit Water Panel Assembly Kit for Models: 400, 400A, and 400M, 2-Pack
$62.50
Case of 2 $124.99
In Stock
Ships Monday
2 Pack Selected

Aprilaire Replacement For 45 Humidifier Filter

  • Original Factory Replacement Water Panel Evaporator Assembly for Aprilaire Humidifiers
  • 1-piece solution - includes panel, distribution tray, scale control insert - floats and float covers NOT included
  • Fits models 400, 400A, 400M
  • Includes 2 assemblies
  • NOTE: Save/re-use existing floats and float cover

TrustScore 14,165 reviews