Where can I get part #4087 float assembly for Aprilaire humidifier model445?
You can\'t. The part has been discontinued. No one has it.
I wasn\'t willing to buy a whole new humidifier, so if you\'re willing to do a little more work, you can do what I did. I substituted a Kerick MA252 Mini PVC float valve. This isn\'t a direct replacement, the float and float arm that come with it are a little too long to fit. You take off the float and float arm and use the original float and float arm. The bolt on the new valve is too big, so you need to provide a bolt that won\'t rust (brass, stainless, teflon, etc.) to connect it. You\'ll have to play with the position of the float arm to set the proper water level. You\'ll also need the square plate off the original float valve to provide a flat mounting surface for the new float valve. You\'ll need to ream out the hole in the plate and the mounting hole to make them round. The tubing inlet on the MA252 works great, but you\'ll have to enlarge the opening on the cover to accommodate the tubing inlet.
The MA252 is made of PVC and stainless steel, so it shouldn\'t corrode away the way the OEM valve did. And better yet, the MA252 costs less than $10 (I got mine on Amazon) where the OEM valve would have cost more than $50 if you could get one.
Jan 21, 2014 |
Aprilaire 4087 Replacement Float Valve...