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For best performance Humidifier Water Panels should be replaced annually.

Aprilaire Humidifiers have very few problems. Many problems occur through neglect to do proper maintenance.  If you ever need any parts for your humidifier we have them or can get them. All parts listed on this page are in stock.

Below we have many of the parts and supplies that you need to keep your Aprilaire 600 Humidifier in top working condition! 

The Aprilaire Stock #35 Evaporative Media Water Panel below fits Aprilaire models: 350, 360, 568, 560, 600, 600A, 600M, 700, 700A, 700M, 768 and 760

Save $6.00 and purchase them by the Case of 6!

Aprilaire Model #4040 Water Solenoid Valve:

Tip:  When replacing a solenoid valve with a new valve. This will prevent your new solenoid valve from getting stopped up with sediment. This is accomplished best by using two people. When replacing any solenoid valve, turn off the saddle valve (water valve). Disconnect the water line from the old valve. Hold the disconnected water line into a bucket. Second person, turn the saddle valve (water valve) back on full force to allow sediment and junk to flow into the bucket instead of stopping up the new valve. Install and connect the new solenoid valve.

The Aprilaire Model 4040 Water Solenoid valve pictured below is the exact replacement valve for Aprilaire Humidifier Models: 220, 224, 440, 550, 558 560, 568, 600, 700, 760, 768. This valve is also the replacement valve for Bryant Carrier part #4374.

This is a 24 volt valve. All 4040 valves come with installation instructions and a 4004 strainer installed in the inlet side of valve. Comes from the factory in a plastic bag.

Aprilaire Part # 4331 Distribution Tray for Model 600 Humidifier

This is an old picture. Our new distribution trays have the black mesh coating on the tray instead of the white granular coating as in the picture below.

Aprilaire Part #4330 Scale Control Insert for Model 600 Humidifier 

Some of our Scale Control Inserts are black instead of this white plastic you see in the picture below.

Aprilaire Part # 4231 Water Restrictor Orifices

Aprilaire RP4004 Water Line Strainer

Another problem that could cause water not to flow in your humidifier would be the water line filter strainer stopped up. The water line strainer is letter "C" in the picture below. Below is an picture with an opportunity for you to purchase. 

Aprilaire Part #4335 Feed Tube With Compression Sleeve

Aprilaire Humidifier Transformer Part #4010

Aprilaire Drain Spud Part # 4223

Self Tapping Water Saddle Valve

*If you loosen the compression nut that goes into your water solenoid valve and no water comes out then there is a good possibility that you need a new saddle valve. The saddle valve has become stopped up with lime deposits or debris.  Please make sure your main water supply is turned off in your home, and the pressure is relieved from the pipes by opening a faucet or two before you attempt to remove the saddle valve. You will get an unexpected shower and a mess if you don't turn off the main water supply and relieve the pressure.  Below is a picture of one of my favorite saddle valves with an opportunity for you to purchase. I especially like it because it is already screwed into the base and ready to go! No pipe dope or Teflon tape needed to keep it from leaking. 

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