Comments about Aprilaire Tune-Up Kit for Models 600,600A, and 600M Humidifier:

A great way to tune up your Aprilaire humidifier! The instructions are basic, though, and that's putting it nicely. In any event, installation is fairly straightforward. I never did understand exactly how the strainer fit in the solenoid valve, as my original installer had not used one. I just left it out. Tip: If you live out west as I do, be sure to install a whole-house water softener to obviate formation of scale on the water panels. I had no softener my first season with the Aprilaire, and without one, scale collects all over the water panel, distribution panel, and scale control insert. It is a mess. Moreover, some particulate dust from that scale can blow through the water panel itself and collect inside the return duct. And I had only 10 grains of hardness!

Comments about Aprilaire Tune-Up Kit for Models 600,600A, and 600M Humidifier:

[...] Paid good price compared to other online companies. Installed easily

Comments about Aprilaire Tune-Up Kit for Models 600,600A, and 600M Humidifier:

I bought the whole kit because I have really hard water. I waited too long to change my filter. I replaced all the nasty parts with brand new ones and now I have a humidifier that is like new! I did it all for cheap!

Comments about Aprilaire Tune-Up Kit for Models 600,600A, and 600M Humidifier:

[...] very easy to replace

Comments about Aprilaire Tune-Up Kit for Models 600,600A, and 600M Humidifier:

This humidifier is very easy to maintain.

Comments about Aprilaire Tune-Up Kit for Models 600,600A, and 600M Humidifier:

Worked great, the only gotcha resulted from the previous owner not following the Aprilaire directions on the placement of the flow-limiter but found an easy workaround.

Comments about Aprilaire Tune-Up Kit for Models 600,600A, and 600M Humidifier:

Everything fits well, except the tube. It's very stiff, much stiffer than the original. Took me a long time to fit it in and cut it. Then it was hard to close the lid because the tubing is in the way. Anyway, now it's installed - hopefully it will last for a few years!

Comments about Aprilaire Tune-Up Kit for Models 600,600A, and 600M Humidifier:

Everything fit, and was easy to install, except the inline filter. Even though my humidifier model number matched, this little filter did not fit in where the diagram said it should. Obviously, I have been operating without this filter so far, so no big deal. Saved big over professional maintenance visit, and it was easy.

Comments about Aprilaire Tune-Up Kit for Models 600,600A, and 600M Humidifier:

Part in the kit were easy to install.
Water line filter needs a better installation drawing.

The rest of the parts were very easy to handle and install.

Comments about Aprilaire Tune-Up Kit for Models 600,600A, and 600M Humidifier:

web site was easy to use,[...] installation was a snap