Questions tagged [humidifier]

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4
votes
1answer
1k views

Is it possible to install a whole house humidifier away from the furnace?

My building is essentially a single extremely large room. It's a 25'W x 45'L x 20' H concrete box, with an open mezzanine over the back 1/3 of the box. The HVAC system is gas-fired forced air, ...
4
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3answers
2k views

How well do whole house humidifiers work?

We are moving to an area where it gets cold and snows in the winter. We come from a desert area where it is never very cold except for the dead of winter, and where we use the heater very seldom. We ...
3
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2answers
45k 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 ...
3
votes
1answer
302 views

Is there a danger of back flow from water heater while replacing a saddle valve?

We have a leaky saddle valve feeding our humidifier. We eventually want to get a real valve installed, but for now are looking for a cheap near-term solution. Here is my concern: the original ...
3
votes
1answer
784 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 ...
3
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3answers
59 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 ...
3
votes
1answer
420 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?
2
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3answers
16k views

Does a whole house humidifier go on the intake or outlet of the furnace?

On what side of the furnace do I install the tank of the humidifier (the warm side or the return air side)?
2
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2answers
756 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 ...
2
votes
1answer
993 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 ...
2
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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 ...
2
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2answers
144 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 ...
2
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1answer
184 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 ...
2
votes
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 ...
2
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3answers
269 views

Where can I install a house humidifier?

I want to install a house humidifier. Right now I'm thinking of buying an Aprilaire 600. But my house set up does not look anything like the videos I've seen. Are the vents behind the insulation? ...
2
votes
1answer
90 views

Does the humidified air get filtered in a bypass setup

In a whole-house bypass-humidifier setup, the humidified air still has to go through the furnace filter. Doesn't that filter out some of the water vapor? Especially with the expensive filters that ...
2
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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 ...
1
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4answers
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 ...
1
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2answers
73 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 ...
1
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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 ...
1
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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
70 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 ...
1
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1answer
223 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 ...
1
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1answer
9k 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 ...
1
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1answer
452 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 ...
1
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2answers
482 views

Leaking Humidifier

We have a Honeywell whole-house humidifier attached to the duct directly above the heating element/electronics of our furnace. A few possible pertinent facts: The water intake is attached via a ...
1
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2answers
4k views

How can I locate and eliminate mysterious water hammer related to humidifier?

In the morning, early, when my thermostat kicks back up, I hear a banging/rattle sound that I've determined is related to my humidifier. It only lasts about 10 seconds so by the time I get down to the ...
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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 ...
1
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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'...
1
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1answer
8k views

How do I wire my furnace humidifier so it comes on any time the fan is on?

I have an Aprilaire 600a humidifier from a few years ago and currently it's wired into my furnace with two control wires labeled "W/G" and "Cf". The "W/G" is connected to the W terminal on the ...
1
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2answers
502 views

Whole House Humidifier on All-in-One Heat Pump and Freezing Temps

How do I install a whole house humidifier on an all-in-one heat pump in an area where we have freezing temperatures during the time of year when you'd want to use a whole house humidifier. An HVAC ...
1
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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....
1
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2answers
4k views

Wiring Aprilaire 700 Humidifier to York TG9* Furnace

I've read the related posts, but they don't answer my questions. Please, help! We had contractors installed: * Aprilaire-700 Humidifier with Auto/Manual Humidistat-Control Knob (non-digital) * ...
1
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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 ...
1
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0answers
58 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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0answers
330 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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0answers
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 ...
1
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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 ...
1
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0answers
139 views

Should I look into getting an active or passive whole-house humidifier?

My wife and I moved into our place a few months ago. Now that is is winter, the humidity levels dropped down to 20% throughout the house. We want to install a whole-house humidifier to raise it up ...
1
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1answer
2k views

Can I install a humidifier on a horizontal duct?

I have a Honeywell whole-house humidifier (HE360A1075). Can this be installed on the horizontal ducting here on the left? It feels like it's an aluminum box under the tape. This is both gas heat and ...
1
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1answer
379 views

Can I install a flow through humidifier on either side of the duct?

I was about to install a Wait6000 whole home humidifier when I hit this snag in the plan. On page 3 of their manual (PDF), it says the cold air return duct must be at least 10" wide. The diagram ...
1
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2answers
4k views

humidity level? stuffy nose

My room is in the basement and for some reason my nose gets really stuffy when I stay in my room for long periods of time. I have a dehumidifier: what would be a good humidity level to keep the room?...
0
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2answers
28k 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 ...
0
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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 ...
0
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1answer
92 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 ...
0
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1answer
92 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. ...
0
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2answers
797 views

How much condensation is okay on storm windows?

I have an old house that has both wooden and aluminum storm windows. Many of the windows develop condensation and frost on the storm windows when it's cold outside. I made sure weep holes were clear,...
0
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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). ...
0
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3answers
84 views

Can forced central air be retrofitted with central humdifier?

Several homes I'm considering have central air conditioners, but radiators or baseboard heaters. Is it possible to use the A/C ductwork to provide humidity to the home? I assume most central ...
0
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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.