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Questions tagged [humidifier]

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28 views

April Aire 600 powers off while furnace is firing

After having a new furnace and AC installed in the summer of 2018, replacing my 20-year old equipment, the existing AprilAire 600 whole-house humidifier behaves differently than before. During the ...
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2answers
77 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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4answers
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
46 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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2answers
87 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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3answers
68 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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2answers
86 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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2answers
32 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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1answer
18 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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1answer
328 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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0answers
66 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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36 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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118 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
101 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
65 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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2answers
137 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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2answers
153 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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0answers
346 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
154 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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1answer
255 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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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
21 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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0answers
39 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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3answers
200 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
26 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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3answers
197 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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1answer
194 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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0answers
218 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
1k 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
298 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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1answer
193 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
828 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
62 views

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
164 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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1answer
428 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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1answer
1k 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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0answers
4k views

Wiring Humidifier using W and C Terminals vs using Humidifier Terminals

I found info at this thread, and would have placed this question there, but I can't comment since I'm too new. I have HUM terminals on my control board, but they're line voltage (120VAC). I don't ...
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1answer
5k views

Wiring humidifier to furnace fan

I have a Generalair drip humidifier attached to a Trane furnace, having the control circuit board d341396P05. The humidifier is wired to the heat cycle of the furnace, so it starts working only when ...
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2answers
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 ...
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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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1answer
1k views

Increase humidity with HRV?

I’d like to increase the humidity levels in my old stone and brick house (~120 years) during the winter. Right now it’s about mid-20% and I’d like it to be 30% to 35%. This house came with a HRV ...
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1answer
94 views

Just installed aprileaire 700 whole house humidifier. Furnace takes air from outside

I installed the humidifier on the supply plenum and digital guage on return as instructions showed. I have a furnace that draws outside air into the return duct. This is a new construction home and ...
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1answer
547 views

How to connect transformer to outlet for humidifier

I purchased an aprilaire 700, and I plan to install a 15a electrical outlet on the furnace right where the electrical comes in. If I first feed hot wire to outlet, and then feed off outlet to furnace, ...
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1answer
534 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
1k views

Aprilaire 500 humidifier on an Amana AMS8 furnace

I have a new furnace that did not come with a humidifier and I'd like to put one on - I've done some basic wiring in the past, but it's not my strong suit and I'm a little confused :) Here's where I'...
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1answer
120 views

Trane humidifier control switch replacement

The control switch that came with bypass humidifier installed with my Trane heat pump started acting up - only turns humidifier water on when I turn the dial all the way to max. I'm thinking I need to ...
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1answer
10k views

Using a humidistat? (humidifier)

I came here to seek a bit of guidance on using my humidistat. I've only owned my home for a few months and have never had a humidistat before. I have a GeneralAire M3 humidistat and was trying to ...
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1answer
93 views

What is the name for the brush to clean this humidifier valve on my HVAC

(Context) The previous owners put a humidifier on the HVAC and I could have sworn that the red wire thing attached to the valve had a brush on the end of it when I was with the inspector months ago. ...
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1answer
165 views

How can I run a DC fan and ultrasonic fogger on one cord? [closed]

I want to build a humidifier for our tree frog terrarium by putting a ultrasonic fogger in a container of water and then attaching a computer fan on the lid. I'd like to combine the power for both the ...
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1answer
477 views

How can I seal HVAC duct damper?

My bypass humidifier is designed to run in a loop between the supply and return, and has a damper to close airflow for the summer. The problem is that the damper is by no means airtight when closed ...