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How much difference does hot vs cold air make with regards to an Aprilaire 600 furnace humidifier evaporation rate?

If I run the humidifier only when the heat is on, I get good evaporation. However, I want to consider also running it with just the fan running because our furnace doesn't run all that often. Will I ...
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1answer
94 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 ...
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2answers
34 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 ...
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1answer
75 views

How to wire a C-wire from a humidifier to a Carrier furnace?

I need guidance on a wire. One wire connects the humidistat to HUM. Another wire should go from the humidifier to COM24Vac. My COM is taken as you see in the picture. Is it an issue to wire the second ...
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2answers
68 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 ...
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0answers
7 views

Aprilaire Humidifier Control

My Aprilaire humidifier control has a red light on it that comes on when furnace turns on. The unit is not working. I tried to reset it and I checked all the wires. The light goes off when the ...
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1answer
157 views

hooking up a humidifier on a carrier infinity furnace

Hello I would like to hook up my desert spring rotary disc humidifier to my new carrier infinity model #59MN7 furnace. I see the control board in the furnace has a HUM (humidifier) terminal and a ...
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2answers
60 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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1answer
64 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
60 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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2answers
175 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 ...
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2answers
725 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 ...
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3answers
76 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 ...
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2answers
108 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 ...
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1answer
307 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, ...
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2answers
570 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) * ...
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1answer
4k 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 ...
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0answers
74 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 ...
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0answers
207 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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0answers
151 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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2answers
7k 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
152 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 ...
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1answer
525 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 ...
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0answers
102 views

Options for humidifier

Winter is approaching and the cool weather is making the air dry in our home. We're using room humidifiers but want to install a humidifier which can go on our furnace. However, we have very limited ...
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3answers
60 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 ...
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0answers
156 views

How do I raise the humidity levels in my home?

I installed hardwood flooring in my home late last fall. The humidity level in my home this winter dropped incredibly low (20%). I'm not sure if it's related to the new hardwood. I installed a whole ...
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1answer
986 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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2answers
2k 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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1answer
63 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 ...
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2answers
2k 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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2answers
1k views

Can I install whole house humidifier in AC ducting?

Just grabbed 2 Honeywell whole house humidifiers: HE360A1075. It's the best model Lowes has and recommends. I have 3 floors and a basement in an old (1890s) victorian house. We have cast iron ...
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3answers
14k 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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1answer
256 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 ...
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3answers
6k 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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2answers
1k 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 ...
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3answers
8k 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)?