Questions tagged [humidifier]

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Is this humidifier properly installed?

Has anyone seen a humidifier installed this way: humidifier installed to side of air handling unit (hole drilled into side of AHU and discharging humidified air directly into the AHU). Always thought ...
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2answers
44 views

Would adding ice to a ultrasonic humidifier help cooling in summer?

During summer it's way too hot for me to sleep well. I currently use a fan, but it's so hot that it's not enough. I had the idea of having a sonic humidifier in front of the fan as the fan would ...
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1answer
56 views

Do I need a whole-house humidifier in Victoria BC with radiant floor heating?

We are building a new 4000sf home in Victoria BC. Heating will be in-floor radiant (no ducting). The floors are mostly hardwood with tile in a few areas. The year-round average humidity here varies ...
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122 views

Is my whole-house humidifier installed and working as expected?

I have a Honeywell whole house humidifier model HE240. Its installed on the warm air supply. I thought this would put the humid air into the warm air stream. Instead its blowing air to the cold air ...
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138 views

Electrical Connection AprilAire 600M Bypass Humidifier

I have a 2-stage furnace and I want to connect the 24VAC from the humidifier to the thermostat connections on the control board. Since the control board has W1 and W2 connectors, which one should I ...
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57 views

How can I prevent a humidifier from getting moldy?

I have a small cool mist humidifier. It has a water tank and ejects a mist and does not have a filter or anything. It is "TaoTronics" brand in case anyone wants to find it. I've noticed pink streaks ...
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3answers
43 views

Water is pouring out of our Aprilaire humidifier

We had an Aprilaire humidifier (600 model) installed in a new house 2.9 years ago. About a year ago, the humidifier began leaking water all over the basement floor. This has happened 3 times with 3 ...
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51 views

How to calculate CFM/pressure needed to move water vapor through duct?

I made a cheap, high capacity humidifier from a mist maker, storage crate, and 120mm fan (the fan blows into the crate, which pushes the mist out). This 4" flex pipe works fine to exhaust the mist ...
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58 views

Is it wrong to install both a whole house humidifier and a whole house de-humidifier?

I live nearish Pittsburgh. Our summers can get pretty hot and humid and our winters can get pretty cold. We have been planning to get a whole house humidifier because the house gets really dry in ...
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29 views

How can I wire the Humistat and Humidifier so that Humudifier runs only during heat cycle?

I have Honeywell Humidifier HE225A, Honeywell Thermostat TH6110D and Honeywell Humidistat H8908B all installed already. Now my Humidifier runs 24/7 wasting water because it is connected with the ...
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55 views

How much cooling is my mist maker humidifier causing?

Closely related to Does a humidifier cool the air? but with a different kind of humidifier, and I'd like to know exact numbers. First question: for the same production volume of vapor, does an ...
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44k views

How do I connect my whole house humidifier to my furnace?

Connecting Desert spring Humidifier to the furnace: Do I eliminate the 24V transformer that came with it? The furnace Keeprite has the the electronic board says Humidifier W1 and C. where can I find ...
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19k views

How to diagnose a broken Aprilaire humidifier (Model 600)?

I have an Aprilaire Humidifier Model 600 (or maybe 600M) mounted on my furnace. The humidifier is not turning on (i.e. letting water flow over the filter) when the furnace is on. The below images ...
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1answer
257 views

How to wire humidifier to furnace

I have a Goodman high efficient furnace with a carrier humidifier attached to the back. The humidifier wasn't working because the solenoid coil was burned, so I replaced it with a new solenoid. The ...
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1answer
410 views

Will a 3rd Generation Nest thermostat correctly adjust the humidity base on outdoor conditions?

If I plug my whole house humidifier into a 3rd generation Nest, is it smart enough to track outdoor temperature and adjust indoor as needed to keep condensation off the inside of the windows?
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188 views

Wiring for humidifier to Goodman gmpn080-4 furnace

I have a Goodman gmpn080-4 furnace and am installing a Skuttle 190-1 humidifier. Where do I wire the two wires from the humidistat to the furnace? I see a 24v HUM screw on the board, but not sure ...
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1answer
17 views

How to electrically hook up my humidifier to my furnace and have it run when furnace is running and not A/C in summer

How do I hook up my humidifier to my furnace so it only runs when furnace heats my house. Just want to make sure it does not turn on when A/C in summer goes on. The person who installed my furnace ...
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56 views

Can I provide low-voltage power for an HVAC humidifier from a standard outlet?

I recently bought an Aprilaire humidifier to replace an old one that came with the house, which I thought was broken. After connecting the water (which does work and isn't clogged) and the wiring to ...
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190 views

Should the solenoid to a Furnace Humidifier be intermittent?

This should be a simple yes or no question but I can't determine it myself. I have an AprilAire 550 Humidifier built into the ducting from my furnace. It appears that the humidifier isn't working due ...
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35 views

CO, USA - Code Violation for Switch or Subpanel to Power AC & Humidifier?

My mechanical closet is on the third floor of our townhouse and our breaker panel is on the first. To install a steam humidifier, I’ll have to run a 220 line between two floors or outside, both of ...
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106 views

Aprilaire 600 unit is mkaing an very loud noise when starting up

My Aprilaire 600 unit is making a very loud noise when starting up injunction with the furnace starting up. After taking the water pad off and watching the start of the furnace, the water came rushing ...
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1answer
83 views

Whole house humidifier when furnace is in unconditioned space

I have 2 furnaces, one in the garage and one in the attic. These are both spaces with unconditioned air, so they get very cold in the winter. The contractor who helped me configure my garage furnace ...
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1answer
2k views

Is an air pressure switch required for a whole house humidifier?

I've installed a Honeywell whole house humidifier. For the time being, I've left off the air pressure switch that goes between the humidistat and the humidifier. It appears to be working fine without ...
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786 views

Aprilaire 700 humidifier not working properly

The fan does not seem to be running. How can I determine what the problem is? I'm not sure if it's the fan, solenoid or the computer board.
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326 views

Do I need to install the separate 24 VAC transformer on my Lennox furnace for a new Aprilaire 700 Humdifier

I'm replacing a whole house Aprilaire 760 humidifier with a new 700 model. It appears that everything is the exact same dimension so I'm intending to pull the old one out and simply install the new ...
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1answer
216 views

Material for water feed line on furnace humidifier. Latex required?

The water feed line on my furnace humidifier that connects to the pad started leaking, so I need to replace it. The original was made latex 1/4" OD tubing, but the store doesn't have that size and ...
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1answer
146 views

What is the purpose of this PCB next to air pressure switch? Do I need it?

I recently noticed the whole house humidifier (installed by the previous owner) stopped working (Honeywell 280A). Filter dry, no flow, no click from the solonoid valve. I did some investigation and ...
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149 views

Can you save money with a humidifier and air conditioner combo?

I recently discovered how powerful humidifiers can be in terms of generating cold. What happens if you run a humidifier in a small room that has an air conditioner? The dehumidifier can produce air ...
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0answers
1k views

Difference Between Take Off and Starting Collar - Which One Should I Use?

I am in the process of installing a whole house humidifier. I am planning to mount it to the supply side and need to connect the bypass to the return. I'm not sure if I should be using a take-off or ...
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1answer
19 views

removing humifier control

have a new furnace for several yrs. now and i no longer have a humidifier. finally getting around to removing humidifier controller. Question: there are 2 wires, 1 red, 1 white, attached to the ...
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2answers
749 views

Whole home humidifier suspected of causing water softener problems

We moved into our house last summer. The water in our area is pretty hard, so we have a water softener for the house. The water softener has an impeller attached to it to meter the water and ...
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1answer
144 views

What Humidifier i need.

I bought a new home couple of month ago and need to install humidifier. After reading some blogs i am confused that i need humidifier for winter only or for winter and summer ( for AC and heat). ...
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36 views

Carrier humidifier hookup

I had a blower replaced. In doing so, the technician pulled the wiring for the humidifier. The image shows the black wire is in place, the white wire not showing in the image is not wired in. Where ...
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1answer
23 views

Humidity setting for vacant house

What should the humidity be set at a vacant house in Minnesota January through May
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165 views

How to change inline water filter on whole home humidifier system?

We have a whole home humidifier as part of the furnace system, but have never really used it since we bought the house. I'd like to get it up and running and am trying to figure out some update ...
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185 views

Water pad for humidifier-can I buy larger and cut it to the size of my humidifier?

I have a Hunter CareFree Plus model (quite old-the thermostat has a analog control -no digital dispaly) and I wanted to start reusing it. It has been in a storage for a while, the filter is quite ...
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1answer
984 views

Compression fitting with copper nut and plastic pipe keeps leaking

I have a problem with a compression fitting leaking for the water supply of my new humidifier. The connection includes a copper nut and ferrule and plastic tubing. There is a slow drip at the ...
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1answer
290 views

Increasing flow rate on a whole-house humidifier

I've got an Aprilaire 550 on my furnace, but it basically never hits the humidity target. I know it's on (I can see microbubbles moving through the tube between the solenoid and the sponge), but there'...
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2answers
8k views

Water has quit running thru my humidifier.

Furnace humidifier dry as a bone. have changed the filter, duh, that is the only thing I know how to do! Bottom line, there is no water running through it.
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4answers
4k views

Honeywell Humidifier Leaking Near Overflow Tube

My humidifier is leaking. It is leaking at the drain assembly. The assembly itself has some designed openings that don't make much sense to me. The water is collecting there and dripping out slowly....
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1answer
181 views

Running low voltage wiring around HVAC equipment

I added a bypass humidifier to my forced air furnace. The control panel is mounted to the return duct, and the wiring runs from the panel into the furnace fan compartment. Wires run from the water ...
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1answer
766 views

Aprilaire 56 Humidistat not getting power

I have an Aprialaire 56 humidistat that is connected to an Aprialaire 560 humidifier. Currently the humidifier is not turning on and after testing the wiring with a multimeter, the wires going in to ...
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1answer
503 views

Aprilaire 700 install no outlet for 120vac hookup?

I purchased an Aprilaire 700 to install soon. I have been looking over the documents and it has an automatic setting with a sensor that goes outside and a digital control, so it will need continuous ...
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1answer
86 views

Does a non-functional whole-house humidifier affect air quality in my home?

I installed a Honeywell Humidifier 18 years ago and it was never cleaned and stopped working 10 years ago. Does this non working humidifier affect the quality of the air in the winter? Should we ...
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4answers
32k views

How do I wire a humidifier without a 24 VAC IN terminal?

The instructions for the humidifier I'm installing says to connect the humidistat wiring to the two terminals "marked 24 VAC IN". My furnace doesn't have terminals marked that. I have R,C,W,Y.G. Am ...
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2answers
3k views

HVAC air handler with a built-in humidifier

I am in the process of choosing an air handler to use only for AC. I plan to keep radiant heat. However, in the winter, I would like to use the AC system to blow humidified air to compensate for the ...
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27k views

What can I do about a saddle valve that won't turn on?

First winter my mother is widowed, we can't get the humidifier on. Thought maybe the water to it is turned off. I'm on the phone with her and telling her to turn this saddle valve counter clockwise to ...
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1answer
969 views

where should I install the bypass duct and humidistat of a whole house humidifier

where should I install the bypass duct and humidistat of a whole house humidifier if the humidifier was installed on the return line? I have the Honeywell Model # HE120A1010 Drum whole house ...
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2answers
1k views

Can ultrasonic humidifiers be used in a bypass setup for a whole house humidifier?

My home is about 3000sqft, with lots of high ceilings. I'm having trouble keeping the relative humidity up in the winter. When it gets down to 10F outside, the RH drops down as low as 25%. This is ...
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2k views

How long should humidifier take to humidify small apartment?

I have two humidifiers running in attempt to combat some severe sinus issues, likely caused by the very dry winter in Boston. I live in an a 450 sq ft studio apartment. They have been running for ...