Aprilaire #4040 Solenoid
Original Aprilaire #4040 replacement solenoid valve. Note: Valve styles may vary.
- 24 VAC
- 2.3 Watts
Replacement solenoid value for Aprilaire Humidifier models 220, 224, 400, 440, 500, 550, 558, 560, 568, 600, 700, 760, 768. The #4040 soleniod valve includes a new inline strainer (pre-inserted in inlet side of valve), and a compression nut & washer for the inlet side only.
Solenoid Valve Replacement Instructions
- For power units unplug electrical cord. For bypass units turn off power to furnace. Also turn the humidistat off.
- Shut off water supply at the saddle valve
- Disconnect inlet and outlet water compression nuts. Double wrench. Note, some water may drip on floor. Remove the orifice (which controls the water flow) from the plastic or copper tube and make sure there is no obstruction. If blocked clean or replace.
- Remove the wire nuts from the water solenoid valve wire connections. Set aside.
- Remove screws that secure valve to unit.
- Attach new valve with screws. Do not over-torque screws into plastic housing.
- Reconnect wires with wire nuts.
- For units with plastic feed tubes inspect for brittleness, hairline cracks, nicks or abrasions, etc. Replace if necessary.
- Reconnect the water lines, double wrenching the compression nuts.
- Turn water back on and check system for leaks. Tighten compression nuts as necessary.
- Restore electrical service and activate furnace by turning up the thermostat.
- Turn up humidistat to verify operation of humidifier. Recheck for leaks. Turn down humidistat to make sure valve shuts off. Reset humidistat and thermostat to original levels.
AprilaireHumidifierParts.com Price:
$54.95
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Customers most agreed on the following attributes:
from WADSWORTH, OH on 2/20/2009Comments about Aprilaire #4040 Solenoid:
* WHOLE HOUSE HUMIDIFIER
* IT WORKS
* THE ORIGIONAL WENT BAD
from Colorado Springs CO on 2/16/2009Comments about Aprilaire #4040 Solenoid:
Installed without a problem. Corrected the problem immediately
from Chicago, IL on 2/13/2009Comments about Aprilaire #4040 Solenoid:
Easy to install.
from Mpls, MN on 2/9/2009Comments about Aprilaire #4040 Solenoid:
This replacement part was better than the original(Brass vs. plastic) install fit perfect and the price was right.
from Central Indiana on 2/4/2009Comments about Aprilaire #4040 Solenoid:
Part was far less expensive than local source. It installed very easy and worked as advertised. I was very satisfied.
from Fair Play Mo. on 2/3/2009Comments about Aprilaire #4040 Solenoid:
Installation was quite simple. It is now in use and working fine.Thank you for your quick response and efficient service. Thank you. Skip Riedmiller [@]
from Chicago, IL on 2/3/2009Comments about Aprilaire #4040 Solenoid:
Turn off the water, undo the water line, undo two screws and two wire nuts, replace the part and you're done. Took all of 5 minutes. Best part is I saved over a hundred dollars on the service call alone.
from Clinton Township, MI on 2/2/2009Comments about Aprilaire #4040 Solenoid:
Replacement part for humidifier on furnace. Humidifier now puts out proper amount of humidity into air.
from Bay City, MI on 2/2/2009Comments about Aprilaire #4040 Solenoid:
Diagnosing the need to replace the solenoid was a logical and simple process. Installation was easy.
Now I don't get static when I pet my dog.
from Herndon VA on 1/30/2009Comments about Aprilaire #4040 Solenoid:
Overall good product, easy installation seems to be working great. Have a lot of wood in the house including guitars that need humidification. Our Aprilaire 550 sputtered out last winter and filling the small room size units gets old pretty quick. Did some quick multimeter testing and determined this part, and the in duct humidistat were both kaput. Perhaps a one hour install for both parts and the humidistat required limited duct opening modification to replace the old unit.
Prompt delivery, good packaging, no need for customer service
