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I installed a whole house humidifier.... it seems to be working but no increase in humidity

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  • craig859 Jan 22, 2009

    I installed it a few days ago... Shouldn't I get a raise in humidity when I place the humidity meter over the register when it is running? everything seems to be working and I have the humidistat turned all the way up..

  • Rob Houg
    Rob Houg May 11, 2010

    Sorry brian Honeywell's website crashed my computer. They must not have like firefox


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I do apologize for being disconnected Craig859. As i said before honeywells website crashed my pc.

Posted on Jan 22, 2009

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Whole house humidifiers work only when the blower is running. How long has it been installed. It can take 2-4 days to increase the humidity level as all of your furniture, walls etc. are absorbing the humidity first. Many times if you leave the blower in the on position for a day or two it helps to increase the humidity level it just depends on how your system is wired. Also set your humidistat to 40-50%. Did you install it or a professional?

Posted on Jan 22, 2009

  • Perry Putnam
    Perry Putnam Jan 22, 2009

    The best place to check for humidity is near the return. Which should be relatively close to the T-stat. What kind of humidifier is it? Where did you mount it? Unless you are running hot water through it you won't get a huge amount of measurable humidity in the supply air. It's a gradual thing and could take a few days. The amount of air and it's temp. will also dictate how much humidity is evaporated into the air. Tell me about your set up.


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Output temperature

Air conditioners will cool 16-20 degrees. So if the house is 80 degrees, 63 degrees is a good output. If the house is 72, the air will be colder. The higher the humidity, the lower the temperature drop will be because the A/C has 2 jobs, to cool and de-humidify. So if the house is humid, the drop will be lower.

Jun 04, 2015 | Heating & Cooling

1 Answer

I have an American Standard Humidifier model #AHUMD300A, installed this fall. The amount of water that it drains seems excessive. Every few minutes it releases what sounds like a lot -- how do I know if...

The amount of water released into the heating system, depends on what percentage of humidity the Humistat (looks like a thermostat) is set on. Generally 40% is about average. If it's set to a higher percentage, the more water it will use. What you're probably hearing is the holding take filling with water. I doubt that you would hear the water vapor being released into the heating system. If you hiear the tank filling that often, turn the humidifier OFF. Turn the water supply line to the tank OFF, open the humidifier's tank top and check to see in the float valve inside is stuck or not rising completely. That could be the reason you hear the tank filling so often.

Hope this help you Troubleshoot and solve the problem. If it did, please be kind enough to rate my response to you. Thanks!

Mar 25, 2011 | Heating & Cooling

1 Answer

I have just completed installing a Honeywell HE220A humidifier to a Carrier Weathermaker 8000vs that was installed in 2003. My problem is that all the identified circuits in previous posts on the circuit...

The terminals on the control board are designed to provide power to the controls of the humidifier, not run directly to the solenoid. If you don't want to install the controls, you can run the 24 volt signal from the furnace heat signal (W1/W2) through the humidistat to the solonoid. This will allow 24 vac to get to the solenoid only when the furnace is running. I do this on most humidifiers that I install.

Jan 28, 2011 | Heating & Cooling

1 Answer

I looked at my humidifier last night, it looks like it hasn't worked in a long time. the filter cage had thick build up where it had been sitting in the water. How is it suppose to work?

A couple questions so I can be sure we are talking about the same machine:

Is your humidifier, located near your furnace, and in one of the sheet metal ducts?-- These kind circulate humidity through-put all the open registers in the connected heating system...

Or is this a portable humidifier that you place in one room, and that room is the first to get the increase in humidity-- These are portable, plug-in-the wall powered units.

The first ones (Mounted in the duct..)
Usually has a rotating 'cage' that has an absorbent pad -- maybe 10 inches in diamter-- and a little motor and gearbox, that slowly rotates this pad thru the trap of water in the bottom. As this bad rotates like this, and the house system's air fan is drawing air past this wet pad, you can see how moisture would be added to your house and it heated air.
This pad needs to be replaced at least annually-- So -- can you replace that pad?-- The local hardware store can sell you replacement pads, and you just stable, or sew them on the large wheel-- Make sense?

If your's is the portable kind-- There may not be a rotating drum-- but maybe stationary pads?
-- Can you remove them?-- and take them to the local Hardware store (after they dry!!) - carry in a sealed plastic bag, for thre may be some nasty mold spores in those pads!

Tell us more-- we want to help!

Mack B

Dec 28, 2010 | Heating & Cooling

1 Answer

Mosture on windows to high or to low setting on Comfor Air 700 humidifier

Hello, If you're getting moisture on the inside of your windows while using your humidifier, you've got the setting too HIGH and you should turn it down at least 2 setting levels to begin with.

Whenever you're using a humidifier, the amount of moisture that it will put into your air will vary depending on how warm or cold the house is. Also, it will depend on whether you not you're using a wood stove to heat with too, as a wood stove will dry out the air faster than conventional heating devices (forced hot air furnance, electric baseboard, etc.).

A wole house humidifier also will vary depending on the outside air temperature changes, so you won't need as much humidification on mild days, as you will on very cold days such as when the outside temps are below freezing.

The good news is that you've discovered the simplest way, for most people, to determine whether to turn your humidifier UP or DOWN - If you're getting moisture on the inside of the home's windows, turn it down, if you're not, you can turn the humidifier up slightly until you just see moisture starting to form on any of your windows (typically this will occur in the colder rooms first), then just turn the setting down one setting level.

The great thing about having a whole house humidifier is that you can actually save on your heating costs, as the moist air makes you feel warmer and will provide you with a more comfortable home in the winter months.

I hope you find this Very Helpful and best regards!

Nov 02, 2009 | Carrier 52CE-307---4 Comfort Series...

1 Answer

I have a new two stage 5 ton heil installed in my

A 5 ton unit on a 2300sf house seems too big.
The only way to tell for sure is to have a professional come out and do a heat load calculation. I understand this is an old house with limited insulation, but many other factors are involved in determine the unit capacity needed including windows, overhangs, infiltration, trees/bushes, house position, etc.

An oversize A/C unit will cause the exact problem you are having. It cools so fast that it doesn't have time to remove the humidity. Please check this and if this is the problem then a band-aid solution is to add the dehumidifier. The correct solution is to install the correct A/C unit (I know, too much $$).

Also, you need to make sure the condenser unit (outdoor) and the evaporator unit (indoor) are correctly matched. Ask your A/C tech to check.

Also, check that the fan is operating at the correct airflow. Too much airflow and you'll have high humidity in the house. Again, ask your A/C tech.

Finally, check that the ductwork is properly sized. Too small or too large will cause you problems.

If nothing comes up, also check for infiltration. This is outside air getting into the house. Check all the obvious places such as around doors, windows, cracks in the wall/ceilings, etc. But also check that air is not getting sucked into the return air duct due to leaks or improper installation. This is all too common. Everything needs to be sealed and tight on the return air path. Remember, this duct is "sucking" air and any leak will **** in hot, humidity air into your A/C unit and then into your house.

I hope this leads you to the problem. Good Luck!

If this information was useful, please select YES to the first two rating questions. Good Luck and thank you!

Oct 24, 2009 | Heating & Cooling

2 Answers

I dont know if my new humidifier is working properly

Hello Mary, Where are you located at? if its cold outside? Then whats going on is that even though the outside humidity is say 80 percent humidity on the inside of oyur house even though oyu have the dehumidifier set at say 50 percent by the time the air is heated up there is not that much humidity in it because then the air heats up by the furnance it takes and dries the air out in the process. I know it sounds confusing but if you have ever had a humidifier in you house and it get real cold outside if oyu don't turn the humiditfier down to a lower setting then waht happens is that your windows will start to sweat and run water down to the sill because its condensing on the cold surface of the window. Hope that this helps you.

Jan 07, 2009 | DeLonghi Heating & Cooling

1 Answer

We installed a honeywell DH90 whole house dehumidifer #B08167014 4026552. Unit is removing water but the supply side is warm air. We are wondering if this is normal or if this air should be cold.

I assume you mean the exhaust side of the dehumidifier, which goes into the supply duct of the furnace.

All dehumidifiers, whether small portable types, or whole house types, exhaust warm air (which is also dry air) as they remove humidity. The whole house unit which you have is a great solution to humidity control. Since the furnace fan should be running on a call for dehumidification, the mixing of the air in the building which is circulating and the exhaust (Dry) air from the dehumidifier negates, or dissipitates the heat in the air coming from the dehumidifier.

Jul 31, 2008 | Heating & Cooling

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