Aprilaire 600 Series Maintenance Kit
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This maintenance kit includes everything you need to make your Aprilaire 600 Series Humidifier like new. Save over $13 versus purchasing each item individually.
We recommend you purchase this kit and replace these parts every 5 to 8 years to keep your unit working like new.
Includes the following:
Aprilaire 35 Water Panel
Aprilaire 4004 Strainer Screen
Aprilaire 4231 Yellow Orifice
Aprilaire 4330 Scale Control Insert
Aprilaire 4331 Water Distribution Tray
Aprilaire 4335 Feed Tube
The manufacturer is sometimes referred to as April Aire, Aprilair, April Air but is correctly spelled Aprilaire. Aprilaire© is a registered trademark of Research Products Corporation.
Maintenance Kit by Denmond L. Souris (Thurmont Ma US)
Upon installation the humidity inside the house rose from 21 to 34. Information received was also helpful in keeping the items of the repair kit in good working order. Over all I am very happy with the ordering, shipping and receiving operation. Keep up the good work Aprilaire!
aprilaire 600 kit by Rick Rogers (Green Lane pa US)
your video instruction is great. It made easy to install
Maintenance kit by Jack McArdle ( US)
easy to do the maintenance with this kit; probably took no more than 15 minutes. I don't recall if directions came with the maintenance kit but since I had the humidifier operating manual, it was straight-forward doing the maintenance.
filter and maintenance kit by Nicholas Beaumonte (Jackson Wi US)
Very easy to install everything. My system was plugged and my filter also had a lot of build up. When I turned the furnace on, the water started running like a champ. I didn't know to change the filter every six months, which started the problem.
A suggested addition by Ralph Kerr (Lakewood CO )
Instructions for installing the maintenance kit are easy to follow with one exception. I couldn't figure out how to remove the old strainer screen so I could install the new one. But necessity is always the mother of invention. A very thin screw inserted slowly into the old strainer screen allowed me to easily extract the screen without damaging anything.
Easy!!! by Ken Brown (Dumfries VA US)
I bought this Aprilaire 600 Series Maintenance Kit to revamp my unit after 7 years of use. The results were instantaneous. The ease of installation was enhanced by direct and clear directions. I would encourage anyone with this unit to enhance the effeciency and impact of their unit by installing this kit for older units that need to be serviced. I immediately felt the difference in my home in humidity levels during cold winter months.
test by test (tempe ar US)
Great for my purposes by John Gehrholz (EAST LANSING MI US)
The "kit" had everything I needed to bring my APRILAIRE 600 current to it's needed maintenance, every part was used. One suggestion however, I bought my home with the APRILAIRE already installed so I was unfamiliar with what was needed to maintain it and sure enough we had only been in the home for about 2 weeks when the change water panel indicator light went on. I looked it up on line and found the kit, ordered it and eventually everything was good to go. My suggestion is that in the kit there should be a big note saying 2 things in bold type: 1. THE LINE PAINTED ON THE WATER PANEL GOES ON THE BOTTOM WHEN INSTALLED. 2. THE RESET SPOT ON THE CONTROL PANEL ISN'T PAINTED AND IS DIFFICULT TO SEE. My 2 cents worth
Great maintenance, should be done by Jonathan Lackman (Kansas City MO US)
This is a great kit to do the basic maintenance on the unit. Keep in mind, this does not include the Solenoid water valve. If the unit is old, there is a good chance the little built in filter has failed and the water valve is plugged (as mine was). So, I also purchased a new water valve, and to protect it I put an ice line filter (for a refrigerator) inline to the feed to the Aprilaire. This used the 1/4" compression fittings and was really easy to install and will protect the $70.00 valve for much cheaper (the ice filter is about $15.00) All in all, a great kit for the basic maintenance. Had I done it sooner, the valve would have been OK.
Gen. by ROBERT L SHELTON (Gardner Ka US)
Very easy replacement parts to install. Works great and saved me lots of money.
It Just Worked by Mark Shampine (Prior Lake MN US)
the parts were all included. Very nice touch including a bar code that took me to a video with step by step instructions for the replacement procedure. Minimal tools and effort. In fact most of the time was taken with replacing the pin valve which I had to do before I could start the procedure as it was pretty badly corroded and leaked when I tried to shut the water off. Once that was done the actual procedure for installing the kit was less than 10 minutes. Great Job!
Water filter kit by ( MN US)
Worked well. Locating product info. on your website wasn't very easy to do.
Humidifier Refurb by Charles Bernath (Fulton MI US)
All the parts needed to make an old system like new.
Aprilaire 600 Series Maintainence Kit by ( )
Was exactly as described on website. The fit was perfect & installation went without a problem.
Recieved what I ordered by Paul Roth (Neenah WI US)
Parts arrived quickly and in good condition. Installation was a breeze but probably only needed to order the water panel.
Maintenance by Thomas Huellinghorst (Saint Charles MO US)
I purchased the kit to have the parts necessary when maintenance becomes necessary. Will use when appropriate. I do not anticipate and difficulty.
Aprilaire 600 Series Maintenance Kit by (Silver Spring MD US)
Easy to use and replace.
Easy install by Jean ( )
I reviewed the video and it had several hints that made installation a breeze. The kit solved my problem with leaks that I've had for the past year
great product by James Taylor (Independence MO US)
This product was exactly as described. It was very easy to install. Quality product
Aprilaire 600 Series Maintenance Kit" by Robert Goodwin (Bolton MA )
Easy to install, good directions.
Good Service by Steve (Salt Lake City Ut US)
Fast shipping. Kit plugged in perfect. Good vendor.
Aprilaire 600 Maint Kit by Tony Toland (Avon CT US)
All was well. My only dilemma was the tapered needle ever installed in the first place. Couldn't see it via mirror, tried inserting a screw to snag it, opened the upper water line but didn't help Finally placed the new one in and snugged it up Turned water back on, tested, it worked and did not leak So, I guess it is a 5 star, just a lot of work and mystery doing if the 1st time
great service by Paul Griffes (Webberville MI US)
I had a broken part & a new one was shipped same day. no hassle. thank you
Aprilaire 600 Kit by Paul B (Derry NH US)
The kit was exactly as advertised, complete and easy to understand instructions. A fair price and shipping was fairly fast. I would absolutely purchase from the nice folks again.
President by Ed Womack (Wood river Il US)
Works great and everything you need was in kit.
Homeowner by Edgar M. Coster (Chatham NJ US)
Packed as represented. One comment is that routine maintenance should not require a new supply line hookup. Replacing the frame, screen and filter is probably most needed. Why not eliminate the fitting and supply hose and let people order what they need a la carte?
dehum repair kit by royal ( US)
As advertized and complete kit filled all my needs.
homeowner by Gordon Rieder (Greenfield WI US)
Very good and timely delivery. New kit is as good as old though the top drain material seems to be better. Old sprayed on grit eroded away and did not slow the movement of water. One complaint and that is filter going into control is impossible to remove and replace with new. Overall I am quite satisfied with these repair parts and would buy again if needed.
Good by Charles (N.Tonawanda N. US)
The product was delivered in a timely way. It was what I ordered and everything was fine. Thank You
Just as expected by Dev P Chakraborty (MURRYSVILLE PA US)
The filter was a cinch to install; the package had clear directions; delivery was on time and the price was good; I have put this item on my annual reminder list of required furnace maintenance. very satisfied with purchase.
Home owner by Richard P. Haberl (East Amherst NY US)
I read the instructions and installed kit. Fast, easy, and was up and running in less than fifteen minutes. Works perfect. Ordered extra pads so the next order will be in three years. Your ratings for product and service are way above 5 stars.
Aprilaire 600 maintenance kit by Jim Van Buren (cincinnati Oh US)
great kit - easy to install. Two questions. The tube from the solinoid to the water membrane fit just by a tight pull. An extra inch on this tube would be appreciated. Also, the water flow orifice in the kit was the yellow one. IT seems to me that a lot of good water now runs down the drain tube and into the sewer. Not sure how much this out flow should be.
mark by Mark Viavattine (Penfield Ne US)
Everything was great.... However, the feed tube is very rigid. The tube becomes a little kinked and difficult to navigate through the side of the unit. Also, it would have been nice to have an instruction diagram just to make sure of the proper direction and order of the connectors and sleeves. thanks, mark
Aprilaire 600 Series Maintenance Kit by Robert Buikema (Plymouth MI US)
Parts worked great, shipping was as promised.
Aprilaire 600 Series Maintenance Kit" by Paul Niemuth (Stillwater MN US)
Worked perfectly to replace old one. Easy to install. Very satisfied with response and delivery time.
Aprilaire 600 Series Maintenance Kit by Aaron Brown (Warren Mi US)
Received the package very quickly, followed instructions and had it installed in minutes. Very pleased with product and results.
Everything Was Fine by David Stedman (Fort Atkinson Wi US)
All parts came as advertised
Great Idea by Sue B ( Io US)
Such a great idea to have all of the parts for maintenance in one kit. The product arrived quickly and was very easy to install. I recommend viewing the installation video before starting. It shows the installation and you will be impressed with how easy it is.
600 Series Humidifier Repair Kit by John Mikita (Liberty Township Oh US)
The repair kit was delivered quickly. The instructions were easy to understand. I was able to complete the maintenance process within 30 minutes.
DIYSTEVO by Stephen Schedin (Apple Valley Mi US)
After inadvertently tossing the plastic frame with the loaded element this fall, I had no luck finding one at the local Home Depot, so I found this kit online. The paper clip trick worked perfectly. The maintenance kit was well worth it to make my system as good as new after about 7 years. Looking back, the water dispersion plate should probably be replaced every 4-6 years for optimum performance.
Aprilaire 600 Maintenance Kit by SM Carver ( US)
Couldn't figure out how to use the hosing and adapter, so just used the old one. Didn't need the whole maintenance kit.
Quick Fix by Jeffrey Tucker (Barkhamsted CT US)
Exactly what I needed to refresh a long-unmaintained Aprilaire 600. A quick, easy, under-two-minute swap-out process, without having to struggle with cleaning old mineral deposits from the frame around the pad and the distribution tray on top.
Aprilaire 600 Series Maintenance Kit" by Abdulkader Kulam (Munster IN US)
High quality maintenance kit, prompt shipment and delivery, nice video demonstration as how to do it, what else can a consumer ask for? Lovely products to along with service, I'm sold for life with "Aprilaire" which really ends with an "e".
Maintenace Kit by Loretta White (Merrill MI US)
All the parts except the frame for the filter were in great condition. The frame was bent so had to use the one that was previously in the humidifier.
Aprilaire 600 Maintenance Kit by Anthony Patton (Savage Mi US)
I ordered the maintenance kit on-line since it was not available at Home Depot or at my local hardware store. In addition, there was an excellent video on-line that showed every step of installation. The kit arrived in a few days and it only took a few minutes to replace the old parts. Great experience!
Aprilaire 600 Series Maintenance Kit by Dave Reid (Belleville IL US)
Very nice instructional video to maintain a system that I did not purchase. It was in the home when I bought the home and the seller did not provide any instruction. The existing drip chamber (I forgot its real name) had lots of "gunk" from our community's water system. The control pad instructed me to replace the drip chamber thing. The website did the rest for me.
"Aprilaire 600 Series Maintenance Kit" by Kathy (Tinton Falls NJ US)
Very easy to install.....first time it leaked, tried a second time and it works like a charm.
DR S SCHNITZER by sbs ( )
Easy to install, satisfied
Mrs by Barbara Harlow (New Palestine IN US)
Customer Service was very accomadating andnew parts were installed. However the faucet still has a leak so I'm trying to find a gasket that might be a little thicker to see if that will help the dripping.
maintenance kit by ( )
Great kit! Very easy to do with good instructions. Thanks
Water panel replacement by Dick Webster ( IN US)
Installed humidifer 11 years ago. Had been only changing the water panel, with Aprilaire or third party items. The surface of the water tray had lost it's "grit". I noticed that that was happening slowly over the years. Well the tray could not handle the influx of water. Replacing all the parts that are includeed with "Apriaire 600 Series Maintenance Kit" solved my water on the floor issue. Seems to be working like 11 years ago.
As advertised by Shirley (Westford MA US)
Great service, quick shipping. I noticed the improvement immediately. Turns out I only needed the filter and case, the water feed tube was still okay and didn't need replacing, so I cannot comment on the ease of that process. Thanks Aprilaire.
mrs by Linda Everson (Englewood CO US)
Product came quickly, was easy to install, and seems to be working well.
Aprilaire 600 maintenance kit by Sue Spearman (Aurora Co US)
Exactly what we needed to service our Aprilaire 600 unit! Great price, fast delivery! Thank you!
Aprilaire 600 Main. Kit by George Grimes (Malvern Pa US)
The kit provided all of the routine replacement parts as one purchase. Easy to install. The Humidifier should be good for a year.
Aprilaire 600 Series Maintenance Ki by ( )
Packaged as listed. Good quality.
review by Mark Edwards (Crystal MN US)
I ordered the part, as in the filter, and recieved the complete set for installation. Which is fine in case I may need that down the road. I wasn't sure if just the filter could be procured or not. the whole process went off with out a hitch, Thanks. Sincerely
Apilaire by T McBryan (Madison Nj US)
Aprilaire 600 humidifier by Greg Martin (Hunt Valley MD US)
Very easy to install just folow the directions
Aprilaire Maintenance Kit by Pat Daugherty (Aurora IL )
Easy to use, with nice directions included.
600 Series Maintenance kit by Jane Selegue (Madison WI US)
Kit was exactly what I needed. It saved me a costly service call.
routine maintenance by RWR (Buffalo NY )
This was the first time since installing my humidifier 3 years ago that I used the maintenance kit to service the unit. Everything was a perfect fit. The humidifier is running in "new" condition right now.
Home owner by Stephen Wells (Colchester CT US)
Everything arrived as promised and went in easily as dipicted in the instructions.
Excellent humidity control by Ernest Schirmer (Lawrenceville NJ US)
The Model 600 humidifier when used with the digital contoller and outdoor air temperature sensor provides set-and-forget humidity control. Holds the humidity setting within a few percent over wide outside air temperature variations.
customer by Peter Pascucci (Ossining NY US)
Excelent products. Worked for me. Will use again if needed.
I can breathe easy now! by Patti Driscoll (Schenectady Ne US)
The instructions for the Aprilaire 600 Series Maintenance Kit were very easy to follow. It only took 10 minutes to swap out the old parts and install the new parts. The humidity level in my house is well controlled now that the humidifier is working correctly. My indoor plants and cats are very thankful as well.
Aprilaire 600 Maint. Kit by Peter J. Bruno (Bound Brook Ne US)
I rate the kit "4", but it may deserve a "5" based on ease of installation and overall performance. The filter elements quickly become encrusted with calcium deposits, impeding the effectiveness of the filter. I would prefer a more stable filter material that would tolerate periodic cleansing to maintain a steady level of humidity from my hot air heating system. Any suggestions other than installing a water softener in the supply sysem? Thanks
Perfect fit - easy install by D. Hirst (Logan UT US)
I wish everything worked this well. Thanks for an excellent replacement product!
aprilaire 600 maint. kit by Charles Gustafson (Cottage Grove Mi US)
Installed easily and is working well.
600 Series Maint. Kit by Jim Minster (Mason Mi US)
Just moved to the home and the old parts were in need of replacement, likely for some time. Originally thought to clean them but checked the web site and found replacements instead. The system was resonably priced. Installation was fairly simple although some additional instruction on where to place the plastic tube filter would've been helpful. Ultimately I placed it in the correct location but then thought it was wrong and took it out, turns out the old filter came out with it so then I knew where to place it. I've never used a whole house humidifier and always used stand-alones. Bought a humidity indicator and so far I've not fired up any of the stand alones. We'll see how it does as it gets colder. I should note that my furnace is connected to a wood burner so the fan runs based on plennum temperature and not on house air temp. So...the fan may run more frequently and allow the humidifier to run more frequently too. Thermostat controls the damper on the wood furnace. Like the produce and will use again.
600MAINTKIT by GLEN CLIFTON (MANCHESTER MI US)
VERY EASY INSTALL. TOOK ABOUT 5 MIN. GOOD INSTRUCTIONS WITH PICTURES.
Aprilaire 600 Series Maintenance Kit by Bobby Roberts (Peyton CO US)
The kit was overall good. I installed everything except the plastic hose that connects to the unit. The plastic was hard and could not be pushed on to the water distribution unit. In the end, I reinstalled to old hose which was in good condition.
500 Series Ket by Jean Grossmann (Macungie PA US)
I received the kit and it fit fine. No more leaking and rusting.
Aprilaire 600 maintenance kit by Karl Knudsen (Chester NH US)
Delivery of the Aprilaire 600 Series Maintenance Kit delivered was prompt. I usually forge ahead and do repairs without reading the instructions, but not this time. I laid all the parts on my workbench and made sure to read the instructions and to identify all the parts before starting. The instructions were very clear and I finished installing the parts in probably 20 or 30 minutes.
Great service by Stuart Lieblich (Avon CT US)
No issues, good instructions, all parts included. everything arrived on time. Good company to deal with: I ordered wrong set first, my mistake, and was quickly credited back.
Saving $$ with the easy Kit by Robert Lutz (Manhattaqn Ka US)
It was the very simple and easy to use. Well worth the low cost versus the service fee charged by heating and cooling companies.
Fantastic by Francis Sauer (Towson Ma US)
Everything about my experience was great. The web page was easy to understand, the parts arrived on time and the instruction were perfect. Thank you !!!!
Awesome kit by Brian Williams (Apple Valley MN US)
This kit is awesome. Everything I needed was included and the unit was like-new after the quick installation.
Quick and Easy Maintenance by William A. Brewer (Rochester NY US)
This kit had everything I needed to maintain my Aprilaire humidifier except for the wrenches for the water connection. It is important to have the instructions for your humidifier on hand since there are only limited instructions in the kit. One operation that is not clearly described is replacement of the debris screen in the inlet to the water control valve. You have to somehow snag the old screen out of the valve body, where it is out of sight.
Review by Shawn Fisher (Spencer IN US)
The kit included almost everything I expected. Unfortunately, I threw away the piece that fits on the bottom of the unit and the drain tube before I knew the kit did not include these two items. Other than that, everything was okay.
Aprilaire 600 maintenance kit by David Yarusso (Shoreview MN US)
I was able to install the kit easily and quickly and my humidifier is working like new.
Model 600 Maintence Kit by William F Lamb (Erie CO US)
The kit was easy to install and has my Model 600 working perfectly again. I would definitely recommend this kit if your unit is several years old and you are not getting the full benefit.
President by Gary Chapman (Deer Park IL US)
Great product by Nichelle thomas (Clinton MD US)
Before I use to have the H/C tech guy come into my home and change my water filter. Until the system started leaking from the filter not setting into the square perfectly. He came out many of times and changed the tubing, saying he didn't know what was wrong with it, the filter would not fit into the system snuggly. To find out he was charging me the original price of a Aprilaire filter for some knock off. This was why it didn't fit, it wasn't the same filter that I started off with. So, I got frustrated with paying the company for trying to find out what was wrong and getting no resolution. So at the convenience of Aprilaire having their products available, I was able to purchase the entire kit and install it myself and guess what..... WHOOOOO! It no longer leaks, refreshes my dry house in the winter, helps with my asthma, and my daughter bloody nose, and my little animals dander. Thank you Aprilaire
Homeowner by Mike Pavlovich (Stillwater MN US)
I received the Aprilaire Maintenance Kit with all parts include. Installation seems to be easy. Since I have shut down the unit for the season, I will look forward to improved performance next winter.
Relatively Simple to Install, and complete by ( )
A repairman fixing something else broke off the spud on my 600. All I really needed was the spud, but after reading some comments on the web I decided to get the entire maintenance kit. I'm glad I did. The existing hose was brittle, the water filter was a little clogged, and the evaporator was worse than it looked. It's relatively fast and easy to install, instructions are pretty good, and it was a simple task.
Thanks Aprilair by emanuel ciantar (trenton mi US)
received my 600 series maint. kit, it worked perfectly now we have humidity in our house. Ordering was a breeze, showed up at the house within a few days. Undamaged !!
Home owner by Wendell Moyer (Sturgis Mi US)
Follow the directions and you will be satisfied. No special skills or tools required.
mr Graham by arthur graham (norton oh US)
homeowner by henry chojnicki (southington ct )
parts arrived quickly and installed witout a problem the new spillpad immediately brought my humidity to the desired level.Also received the remote monitoring unit which I found to be very useful to compare the duct indicated humidity level to a room reading I am very satisfied with the design and performance of your product
Homeowner by Gene Baynon (Crystal Lake IL US)
I appreciate the speed in which I got the kit. It only took 3 days to get it. I installed it right away and the leaking of my humidifer stopped.
consumer by Dale Woodford (Platte City MO US)
My order arrived quickly, the parts from the "maintenance kit" were easy to istall. Along with a little cleaning of the unit and a new "pad", my Aprilaire 600 unit now operates like new.
Aprilaire 600 Maintentance Kit by ( )
Easy to install.
Restored my humidifier in less than 15 minutes by Charles Knox (Omaha Ne US)
I was able to restore my Aprilaire 600 humidifier in about 15 minutes without even using tools. The kit makes it an easy task. with the exception of the water grid, I will be able to clean up the old parts and use them when the time comes to replace the new parts.
Everything You Need, Right Here by Matthew G. Zatkalik (Oak Forest IL US)
It was time to renew our 9 year old installation of the Aprilaire 600M humidifier. The kit contains all the pieces that usually get left untouched by just a filter swap. Now it operates like a totally new product. This is the way for Do It Yourselfer to 'Get Er Done.'
Excellent Service by Phil Morris (Ford City PA US)
Very easy to use site. Order process was simple. Delivery was on time. Parts were correct. Excellent service all round.
Rating by Patrick Gray (Spokane WA US)
All included. Made in USA. Easy to install. Works great.
Aprilaire 600 Series Maintenance Kit by Richard K Berg Jr (North Aurora IL US)
Everything was fine. Met my expectations.
home owner by Thomas R Trexler (allentown Pa US)
I changed complete system - no problems - but when in test mode the change water panel (green) light still comes on. Still no sure if the system is working properly. A small amount on water is now coming thru the discharge tube at the bottom of the water panel. Any help ???
Review of Product by GEORGE UMBARGER (HIGHLAND IN AE)
The kit worked perfectly. My only criticism was the size of the print on the instructions.
clean & easy by Jim Thale (Deerfield IL US)
Easy to install, clear instructions. The filter would not fit into the solenoid valve body, but the water here is very good so it was not an issue. Overall excellent!
Purchasing Mgr. by Ken Pine (Lenexa Ka US)
Parts shipped out promptly, and the service kit had all parts needed to complete the service call.
Home Owner by Larry Denning (Liberty MO US)
Quality parts. Arrived in a timely fashion.
Aprilaire 600 Maintenance Kit by Mark A Griesemer (Eureka MO US)
The product fit perfectly and has operated flawlessly
Aprilaire 600 Series Maintenance Kit by Darel Hardy (Fort Collins Co US)
The maintenance kit included exactly what I needed. At first I thought that the water tube was unnecessary, but when I took apart the old one, a large split was visible on one end.
Aprilaire 600 Series Maintenance Kit by Tim Yerrick (Adrian Mi US)
It was very easy to install.
Review by Joseph Lanfranco (Shelton CT US)
Products were received timely and the process of ordering on line was very smooth. i was very happy with the products and the service of Aprilaire.
Home Owner by Dave Bates (Aurora CO US)
I found all items of the kit to work fine. No problems with install at all. I plan on reordering parts as needed in the furture.
Installation by Frank Durso (Cheshire Co US)
The filter sent for the inlet water hose would not fit since it was too long and touched the inlet auto valve. Directions were not clear what end to connect to the valve and where cut so part of the scrip was missing.