Aftermarket · Made by Think Crucial · Not made by Essick Air

Replacement air filter for Essick Air part 1051.

The humidifier's air filter, not the 1041 wick, for Essick Air 4DTS, H12, 696 and 447 series humidifiers. One filter for $36.99.

Think Crucial filter for the Essick Air Essick Air · 1051 — **Fig. 01**1 filter

FitsPart 1051

4DTS 300
4DTS 900
H12 300HB
H12 400HB
H12 600
696400HB
696800
447400HB

Not sure? Check your model or email support@thinkcrucial.com.

Shipping
Free U.S. shipping on every order
Dispatch
Ships the same business day when ordered by 2pm ET
Fit
Fit guaranteed on the models listed
Returns
30-day returns with a prepaid label

01Spec sheetFrom the listing

What's in the box.

Exactly what ships, so you can match it against what's in your machine now.

In the box1 filter

1 ×
humidifier air filter compatible with Essick Air part 1051

Fits: Essick Air 4DTS 300, 4DTS 900, H12 300HB, H12 400HB, H12 600, 696400HB, 696800 and 447400HB
Replaces part no.: 1051 (Essick Air)
Price: 1 filter: $36.99
Subscription: None. Buy when you need it
Made by: Think Crucial (aftermarket, not affiliated with Essick Air)
Ships: Free, from a U.S. warehouse. Same business day when ordered by 2pm ET; arrives in 2–5 business days

02CompatibilityEssick Air · 1051

Check your model.

Listed for the Essick Air 4DTS 300, 4DTS 900, H12 300HB, H12 400HB, H12 600, 696400HB, 696800 and 447400HB. Two minutes now saves a return later.

4DTS 300
4DTS 900
H12 300HB
H12 400HB
H12 600
696400HB
696800
447400HB

01
Find the model number
The model is on the humidifier's rating label.
02
Check it's the air filter
This is the air filter, Essick Air part 1051. The wick is part 1041.
03
Still not sure?
Email your model number to support@thinkcrucial.com and we'll tell you whether it fits. We reply within one business day.

03QuestionsBefore you order

Before you order.

Straight answers. Anything else, email support@thinkcrucial.com.

Q.01Is this made by Essick Air?

No. It's a compatible replacement made by Think Crucial. It isn't made, sold or endorsed by Essick Air, and Think Crucial isn't affiliated with Essick Air.

Q.02Is this the wick?

No. It's the air filter, Essick Air part 1051. The wick is part 1041, sold separately.

Q.03How do I install it?

Remove the old air filter and fit the new one as shown in your humidifier's manual.

Q.04What if it doesn't fit?

Fit guaranteed: if it doesn't fit the model we list, email support@thinkcrucial.com within 30 days of delivery with your order number and model number. We send a prepaid return label and refund you in full, even if you opened it to test the fit. Changed your mind? Return it unused, in its original packaging, within 30 days of delivery.

Q.05Is there a subscription?

No. You buy when you need it. Nothing renews and nothing auto-ships.

Q.06When will it arrive?

Free U.S. shipping on every order, from a U.S. warehouse. Ships the same business day when ordered by 2pm ET. Arrives in 2–5 business days.

04Who makes this

We make what we sell.

Think Crucial started in 2007 at a family vacuum repair shop. Today we're a U.S. company in Hollywood, Florida, making aftermarket filters, bags and parts built to fit the machines you already own. Most people can fit the part themselves. They just need the right one, and a way to check it first.

Questions before you order? Email support@thinkcrucial.com. We reply within one business day.

Ready to order