1 / 7AprilAire 4839 Humidifier Maintenance Kit with Model 35 Water Panel
The AprilAire 4839 maintenance kit is listed for whole-house humidifier models 600, 600A and 600M. It combines the Model 35 water panel with other maintenance parts, so it is aimed at servicing a compatible unit rather than replacing the humidifier itself.
At a glance
- Listed for AprilAire whole-house humidifier models 600, 600A and 600M.
- Includes a Model 35 water panel and a set of related maintenance parts.
- Manufacturer listing recommends replacing the water panel annually.
- Dimensions are supplied as 10"D x 1.75"W x 13"H. The listing describes the water panel as 13" H x 10" W x 1.75" W.
Reference price: $94.99
Price checked: Nov 12, 2026
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Pros and cons
Pros
- The kit groups the water panel, water-distribution and drain-related parts, and an owner's manual in one maintenance set.
- The specified compatibility covers three AprilAire humidifier models, which helps identify the intended replacement application.
Technical specifications
10 specifications| Brand | Aprilaire |
|---|---|
| Model | Humidifiers Parts and Accessories |
| Control methods listed | Touch |
|---|---|
| Power configuration | Corded Electric |
| Dimensions listed | 10"D x 1.75"W x 13"H |
|---|---|
| Weight listed | 0.27 g |
| Material listed | Metal, Plastic |
|---|
| Maintenance mode | Evaporative |
|---|---|
| Color | Black |
| Shape | Rectangular |
What to know before buying
Listing details to confirm
The listing labels the kit's control method as Touch and its power source as Corded Electric, although this is a replacement-parts kit rather than a complete powered humidifier. The listed weight of 0.27 g also appears inconsistent with a maintenance kit. Dimensions are stated as 10"D x 1.75"W x 13"H, while the panel description gives 13" H x 10" W x 1.75" W, including two width labels. Confirm the relevant part specifications for your unit before ordering.
What’s in the box
Included- Model 35 water panel
- 4004 inline strainer
- 4231 orifice
- 4223 drain spud
- 4330 scale control insert
- 4331 water distribution tray
- 4335 feed tube
- Owner's manual
Who is it for?
A good fit for
- Owners maintaining AprilAire whole-house humidifier models 600, 600A or 600M.
- Buyers seeking a kit with a Model 35 water panel and multiple maintenance components rather than a panel alone.
Less suited to
- Owners of humidifier models other than 600, 600A or 600M unless compatibility is confirmed.
- Buyers looking for a complete humidifier rather than replacement maintenance parts.
Customer reviews on Amazon
- 5 stars
80% 80% - 4 stars
14% 14% - 3 stars
4% 4% - 2 stars
1% 1% - 1 star
1% 1%
Customer feedback highlights ease of installation, fit, and the convenience of having the maintenance parts together. Some customers describe the kit as worthwhile compared with arranging HVAC installation. That feedback may matter to owners servicing one of the listed models, but it does not confirm compatibility with other units. Overall ratings are mostly in the top categories, though ratings alone do not explain individual experiences.
Positive themes
- Customers report that installation is easy and the kit includes the parts they need.
- Feedback describes the fit as good and the parts as suitable replacements.
Frequently asked questions
Which humidifiers is the AprilAire 4839 kit listed for?
The listing specifies AprilAire whole-house humidifier models 600, 600A and 600M. Check your unit's model before ordering.
What parts are listed in the kit?
The stated contents are a Model 35 water panel, inline strainer, orifice, drain spud, scale control insert, water distribution tray, feed tube and owner's manual.
How often does the listing recommend replacing the water panel?
The product listing recommends replacing the water panel annually.
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