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 Robbinsdale,Mn. on 5/20/2010Comments about Aprilaire #4040 Solenoid:
This was the best place to purchase this item because of cost. Anywhere else, 30 to 40 dollars higher or did not carry product.
from ohio on 4/5/2010Comments about Aprilaire #4040 Solenoid:
Product was a direct replaicement
from Georgia on 3/27/2010Comments about Aprilaire #4040 Solenoid:
Works as advertized, easy install.
from Farmingdale, NJ on 3/25/2010Comments about Aprilaire #4040 Solenoid:
Got the solenoid, replaced it in 20 minutes and there are no more leaks or wasted water.[...]
from Nebraska on 3/16/2010Comments about Aprilaire #4040 Solenoid:
The part was as Pictured and was better than the original. It installed perfectly and I couldn't be happier
from Washington, DC on 3/12/2010Comments about Aprilaire #4040 Solenoid:
Just as advertised, very smooth process from search on the internet to installation. [...]
from Columbia, MAryland on 3/11/2010Comments about Aprilaire #4040 Solenoid:
Two things that helped. Using the information on the web site I was able to determine exactly what the problem was. I ordered the correct part and it was easy to install. The hosue feels so much better.
from Champaign, Illinois on 3/5/2010Comments about Aprilaire #4040 Solenoid:
simple installation[...]
from Blue Bell, PA on 3/2/2010Comments about Aprilaire #4040 Solenoid:
The instructions were easy to follow and the part was an easy and fast installation.
from springfield Ohio on 3/2/2010Comments about Aprilaire #4040 Solenoid:
[...] no problems with installing. Problem solved.
