Our Aprilaire 760 humidifier has been installed for 14 years. But I have a question.

Thursday, July 5, 2012 by Aprilaire Team
Consumer question:
 
Our 760 has been installed for 14 years. The insulation material on either side of the fan had to be removed. Should I replace it with new pink fiberglass insulation? It appears that is where the unit pulls in air.
 
 
Aprilaire's response:

Thank you for you using Aprilaire in your home comfort system.

I am somewhat perplexed that your system had been operating for 14 years with insulation restricting the air flow. Normal installation does not necessitate the blockage of air into the humidifier. This may have been done to prevent water leaking from the humidifier in high static pressure within the duct system. I would recommend having an HVAC contractor look at the system to determine the reason for the use of insulation; it was not for filtering the air.

If you have additional questions, please contact us.

Lots of water running down the drain tube, is that correct?

Thursday, June 28, 2012 by Aprilaire Team
Consumer question:
 
I had a model 700 Aprilaire humidifier installed yesterday and have a couple of questions;

1) it seems to have a lot of water when running coming out of the drain tube, is that normal?
2) I had to install the hunidifier on the return side becuase there was no room on the feed side of the furnace. I put the thermostat on the return side also but the reading goes way up and then back down when its operating when it kicks on and off. Should I put the thermostat on the feed side so its not on the same side as the humidifier? Its running in manual mode right now, I have to run the sensor outside adn my basemnet is finished so thats going to be a challenge.

 
Aprilaires' response:
 
Thank you for choosing the Aprilaire line of humidifiers for your home comfort system.
 
The amount of water that is discharged down your drain should be approximately 3 gallons per hour. Your description of the extreme humidity swings when the unit is cycling on and off lead me to the conclusion that the humidifier control may be mounted too close to the humidifier, or is mounted between the humidifier and the furnace, allowing for the humidifier output to affect the sensing of the control. It is recommended , in the installation guide that the control should be mounted at least 6" upwind of the humidifier.

If you have other questions regarding your Aprilaire 700 humidifier, please contact us at the number below. We appreciate your business.

Any problem with installing a humidifier on ductboard?

Thursday, June 28, 2012 by Aprilaire Team
Consumer question:
 
My model 600 Aprilaire humidifier unit was installed into fiberglass ductwork. Will I face any issues? Thanks...
 
 
Aprilaires' response:
 
Thank you for your purchase of our Aprilaire model 600.

The only issues we might foresee are when our humidifiers are installed in fiberglass ductwork or also called "Ductboard,"would be maintaining the integrity. The integrity of the ductboard should be reinforced to accommodate mounting your Aprilaire model 600. Even though the model 600 only weighs 10lbs without water it could eventually create some sagging of the ductwork. If your installer has accomplished this then I do not see any other possible issues.

If you have any other questions regarding this or any other issues feel free to contact us.

This unit weas installed into fiberglass ductwork. Will I face any issues? Thanks...

 

My Aprilaire humidifier control is showing an E1 error? Help!

Monday, June 11, 2012 by Aprilaire Team
Consumer question:
 
I have an 600 model humidifer that has been working fine since installed. I noticed my house was dry this past week and discover an E1 error on the humidstat. I reset the unit a few times but the error keeps coming back.


Aprilaires' response:

Thank you for contacting us.
Unfortunately an e1 error code would indicate an issue with the relative humidity sensor on the back or an issue with the circuit board on the control.
The humidistat would need to be serviced by the point of purchase or another local dealer.
Here is our dealer locator if you need to find a recommended local dealer:
http://estore.aprilaire.com/catalog/installed-products/humidifiers

 

Should my Aprilaire Humidifier be hooked up to hot or cold water?

Friday, June 8, 2012 by Aprilaire Team

Consumer question:

I have a Aprilaire 600m model and should I conect the water supply to the hot or cold line.

 

Aprilaires' response:

Thank you for your email regarding your model 600M Aprilaire humidifier. Your Aprilaire humidifier will operate on hot, cold hard or soft water. We do however recommend hot water as it will increase the evaporative capacity of the humidifier. Hot water will also allow you to operate your humidifier during a fan call. A heat source is required for the evaporation process. During a fan call the only source of heat is hot water.

 

 

Can a UV light be installed by my Aprilaire Humidifier?

Friday, May 25, 2012 by Aprilaire Team

Consumer question:

I plan to install the UV-C light in the supply air plennum above the AC evaporator coil. How far away from the humidifier should the light be? I understand the UV light may damage plastic parts? or is there no problem?

Aprilaires' response:

Thank you for your email regarding your Aprilaire UV-C Light. You are correct, the light will damage the plastic parts on your model 700. Mounting your UV light at least 8 inches above the AC coil the model 700 cannot have any direct light. Therefore you can shield the light from the model 700, or a better alternative would be to move the model 700 to the return side of your HVAC system and supply it with hot water.

 

My model 400 Aprilaire humidifier is not running in normal conditions, suggestions?

Wednesday, May 23, 2012 by Aprilaire Team
Consumer question:
 
Water flows and humidifier on light comes on only in reset mode but humidifier does not come on and activate water flow in normal mode. I have turned dial to max humidity but still does not activate water flow when furnace comes on. I am running in automatic mode with wiring installed per installation manual. I have the outdoor sensor installed but not run outside yet. Please advise. Thank you
 
Aprilaires' response:

Thank you for your email regarding your model 400 Aprilaire humidifier. If the outdoor sensor is in an area where the temperature is above 60F the humidifier will only run in the test mode. You may confirm this by moving the manual/auto switch to the manual position. This will allow the control to work off the manual sensor on the control rather than the outdoor sensor.
 

 

I have manual control for my whole house humidifier. I've been noticing water on the windows in the morning.

Saturday, May 12, 2012 by Aprilaire Team
Consumer question:
 
I have manual control for my whole house humidifier. I've been noticing water on the windows in the morning. When I look at the humidistat it is set for 32% (doesn't say RH but thats what I assume). I got another Aprilaire humistat that just measures RH and put it on top of my existing control. Where the existing control indicates about 32%(5% hysterisis) the standalone unit indicates 44%RH. How do I know which is correct and what do I do if my existing manual control is wrong? IS there a way to clean or calibrate it?
 

Aprilaires' response:

Thank you for your email regarding your Aprilaire humidistat. If you turn the dial from left to right you should hear two clicks. The actual humidity in your home will be the area between the two clicks. For example, if the humidistat clicks at 30% and 36% your actual humidity would be 33%. There is not a way to calibrate the humidistat. It is unclear from your email if the original humidistat is an Aprilaire humidistat, so it is difficult to say if it is out of spec. The accuracy of our Aprilaire manual humidistats are +/- 5%

The moisture on your windows is due to the surface temperature of your windows reaching dew point. This occurs when there is more humidity in the home than what the home can hold based on the current outdoor temperature. As the temperature outside drops you want less humidity in your home. For example when the outdoor temperature is 20F or above we recommend 35% humidity at a room temperature of 70F. If the outdoor temperature drops to 0F you'll want 25%.

Thank you for giving us the opportunity to be of service.

Our Aprilaire 760 runs all the time but our 550 humidifier only run with the furnace blower is on, which is correct?

Friday, May 11, 2012 by Aprilaire Team

Consumer question:

I didn't notice this until recently, but our Aprilaire 760 runs regardless of the furnace blower running, whereas our 550 model does not. Is that typical for the 760?

 

Aprilaires' response:

Thank you for contacting us with regards to your model 760 Humidifier. Both the 550 and 760 should run only when the furnace is on, or at least the blower is running. When there is no air moving through your ducts, Aprilaire humidifiers should be off, as well. If your 760 runs without the furnace, we would recommend that you contact either your original installer or current Aprilaire service technician. If you don't have a current technician, please visit us online at www.aprilaire.com and enter your ZIP code into our dealer locator. You should get contact information for several nearby companies.
 
We appreciate the opportunity to be of assistance.

 

Ultrasonic Wall humidifier?

Thursday, May 10, 2012 by Aprilaire Team

Consumer question:

Does anyone make in-the-wall humidifiers that are silent ( like ultrasonic ) but won't put out minerals or chlorine? We want something for our bird room, that won't make noise when it comes on, like our Aprilaire 360 does, because we don't want to scare the birds at night while they sleep.

Aprilaire response:

Thank you for contacting us.
We don't have an Ultrasonic Wall unit. Our 360 is our only wall through offering. This unit has a decibel rating of 73.
One option might be our 800 steam humidifier with our 850 fan pack. The fan pack would be mounted in the wall and has a decibel rating of 50. There would be some fill and drain noises associated with the 800 itself but those could potentially be mitigated by an installer.
 

 

My Aprilaire model 760 humidifier that has worked great for the last 11 years has a short

Thursday, May 10, 2012 by Aprilaire Team

Consumer question:

My Aprilaire model 760 humidifier that has worked great for the last 11 years has a short that apparently cannot be repaired. So what would it cost to get a new one that will fit my furnace exactly like my 760 did. Also the cost of a new one, or can mine be sent in for repair.

 

Aprilaires' response:

Thank you for using Aprilaire products in your home comfort system.

I am sorry to hear that your model 760 has failed after 11 years of service. I am please to let you know that you local heating and air conditioning company can assist you in obtaining a replacement for your model 760. Our current model 700 humidifier would replace the model 760 for area coverage, the dimensional size may vary slightly.

 

No water comes in to the model 500 aprilaire humidifier when running. What could be happening?

Wednesday, May 9, 2012 by Aprilaire Team
Consumer question:
 
No water comes in to the model 500 aprilaire humidifier when running. Could it be a problem with the solenoid valve??


Aprilaires' response:

Thank you for contacting us.
No water could be an indication of an issue with the solenoid valve.
If you have an Automatic Control try putting it into test mode:

A. No click at the solenoid valve indicates an electrical problem. Contact the heating and air conditioning dealer to further check the electrical components of the Aprilaire Humidifier.

B. If the solenoid valve makes a click sound and there is no water draining from the unit, this would indicate the flow of water is being obstructed.

1. To determine if water flow is being obstructed, turn the dial of the humidifier control to the off position. The first location to check for an obstruction would be at the saddle valve located on the water line supplying water to the humidifier. When checking the saddle valve, make sure it is completely open. This can be done by turning the valve all the way to the left. If anything is clogged, it can be dislodged by turning the saddle valve all the way to the right and back to the left. Once this is done, turn the humidifier control dial above the click point and water should be coming out the drain line.

2. If water is still not coming out of the drain, check the orifice and in-line strainer to make sure they are not clogged. The orifice is located in the tube on the outlet side of the solenoid valve and the in-line strainer is located on the inlet side of the solenoid valve (see attached). The orifice may be cleared by inserting a needle through the small opening. The strainer may be cleaned by running it under warm water to dislodge deposits or replace it. After clearing and re-installing the orifice and strainer (be sure to double wrench all water connections), turn the humidifier control dial above the click point and water should be coming out the drain line.

 

What is the minimum water temperature to supply an Aprilaire 350 humidifier?

Tuesday, May 8, 2012 by Aprilaire Team
Consumer question:
 
What's the minimum water temperature needed to supply this Aprilaire model 350 humidifier unit? We want to reduce the water temp for the summer so it doesn't heat the house while it runs. Here in Denver we still need the moisture all year around.

By the way, do you make a in-the wall ultrasonic unit with a humidistat, that can run from filtered water that removes minerals and chlorine?
 
 
Aprilaires' response:

Thank you for your email regarding your model 350 Aprilaire humidifier. The minimum water temperature for our self contained humidifiers is 140F. This is required in order for the evaporation process to take place. When the hot water flows over the water panel, the water evaporates off the water panel and into the room temperature air moving through the water panel. Lowering the water temperature will reduce the amount of humidification produced. The water to the humidifier can be hard or softened but should not be from a reverse osmosis system. We do not manufacture ultrasonic humidifiers.

 

What is the replacement for the 2120/2140?

Monday, May 7, 2012 by Aprilaire Team
Consumer question:

We had our A/C system replaced last year. We had an Aprilaire filter system installed at the recommendation of the contractor. He said that the filters were Aprilaire 2120/2140 and a Humidifier Panel 400. What is your current replacement for these. I do not see them on any site selling your product.

Aprilaires' response:

Thank you for contacting us regarding replacement media for your Aprilaire products. The models 2120 and 2140 are two different air cleaners and would take different filter media. Please follow the links below for more information on the filter media for the two air cleaners:

http://estore.aprilaire.com/catalog/air-cleaners/model-2120-parts
and
http://estore.aprilaire.com/catalog/air-cleaners/model-2140-parts

Furthermore, please follow the link or navigate through the estore for information on the replacement water panels for the model 400 humidifier:

http://estore.aprilaire.com/catalog/humidifiers/model-400-series-parts/254

If you have any further questions regarding this or any of our products, please feel free to contact our customer service department at your earliest convenience.

 

How can I tell the difference between the old aprilaire 400 series humidifiers?

Monday, May 7, 2012 by Aprilaire Team
Consumer question:
 
How can I tell what model I have? (please add this question/answer to your FAS's).

My unit is probably at least 25 years old. I am having a problem with it (leaking water coming from unit's housing), and would like to understand which model I am dealing with.

I have a unit that is installed on ductwork associated with the furnace. The unit is drained by a flexible tube that goes into a pump (on the floor) that evacuates the excess water to a nearby sink. The unit uses warm water.

The rheostat/control is installed on ductwork as well, about 3-4 feet away from the unit. The Rheostat is a dark brown/black control knob, in the middle of a rectangular panel that is also dark brown/black. All the printing on the rheostat's panel (that was once a faint gold perhaps) is worn away, except the '25' at the top/middle of the dial, and - in the upper right- the lettering 'aire.'

Some pages from the original manual were pasted on the inside of a cabinet door in the basement by a previous owner (until today I had not known what they were for.). The instructions say that the Summer Shut-off instructions are to turn the dial to 25. I was unable to find a manual on your website that contains those instructions.

However, from the pictures in http://www.aprilaire.com/themes/aa/en/manuals/Humidifiers_Owners_Manual.pdf, it appears like the models shown on pages 13 and 14 (Models 440, 445-448).

How can I tell which model it is? thank you.
 
 
Aprilaires' response:

Thank you for your email regarding your Aprilaire humidifier.
The following is the best way to tell the difference between the model 440 and the model 445-448. The 445-448 will have a thumb screw on the bottom of the Humidifier to hold on the reservoir. The 440 does not have a thumb screw because it does not have a reservoir.
Turn your Humidistat knob clockwise until it stops (to the off position) to turn your Humidifier off. You will have to set it to the desired percent when your humidity levels begin to decrease.

 

I need humidity in the Summer, what should I do?

Wednesday, April 25, 2012 by Aprilaire Team
Consumer question:
 
My heating/air cool unit is now controlled by a new thermostat that allows fan circulation about 35% of the time whether the heat or cooling is running or not. Will the humidifier work when the fan is on whether it is on heating or cooling? I live in an area which humidity averages about 12% during the summer. I need to add humidity during those times.
 
 
Aprilaires' response:

Thank you for that very good question regarding the Aprilaire humidifier operation.

The answer to your question depends on the type of humidity control that was installed with the humidifier. In the event that the humidity control was the type that used an outdoor temperature sensor to regulate the humidity, then the humidifier would not add humidity in the summer months. this type of control would disable the humidifier when the outdoor temperature would go above 60 degrees. If the humidity control does not use the outdoor temperature sensor, then you may be able to humidify during the summer months. Just be aware that the air conditioning system will remove some humidity during its normal operation; which would take longer to bring the humidity level up.

 

What humidifier is right for my 1500 sq ft house in Alaska?

Tuesday, March 13, 2012 by Aprilaire Team
Consumer questioni:
 
I have a 1500 sq. ft. house in Alaska. Very dry in the winter. We have a forced air furnace and a HRV system. Also have hard wood floors that currently are shrinking due to RH in the home of 32%. What humidifier do you recommend to meet our needs?
 
Aprilaires' response:
 
Thank you for contacting us with regards to our Aprilaire Humidifiers. Based on the information provided, we could recommend any of our units. Other factors to consider are the age of the home and its relative tightness. The presence of an HRV system must also be taken into consideration. These systems typically provide a constant stream of fresh (and dry) air to your home. HRVs can actually work against your humidification needs by removing humidity already inside the home. You may want to weigh the benefits of the HRV operating during your humidifying season versus meeting your humidifying needs. We would recommend that you contact your local HVAC installer to have them visit your site and provide you with an assessment of your humidity needs and what Aprilaire humidifier would best meet them.

 

There's a knock whenever the humidifier comes on or shuts off. What is the cause?

Wednesday, March 7, 2012 by Aprilaire Team

Consumer question:

There's a knock whenever the humidifier comes on or shuts off. What is the cause?

Aprilaires' response:

Thank you for contacting us with regards to your model 700 Humidifier. The noise you hear is the humidifier's solenoid valve (water valve) opening or closing. Normally, this valve makes a slight 'click' noise when doing this, but water pressure and the build up of water scale inside the unit can increase this noise. As a test, try turning off the water to the humidifier and then use the humidistat to turn the humidifier on and off. Listen for changes in the noise. Typically, the noise is quieter without any water pressure, but pressure is required to feed the correct amount of water through the unit.
Speak to your contractor about possible remedies if the noise becomes excessive. Anything from cleaning the valve to adding sound-insulating foam rubber to the valve can help dampen the nosie. In some cases, replacing the copper tubing with steel-braided rubber tubing or installing a shock-arrestor can help dampen the noise by absorbing the impact the water makes when the valve closes.

 

 

Which side of the furnance can my humidifier be installed?

Thursday, March 1, 2012 by Aprilaire Team
Consumer question:
 
I have not yet purchased a whole house humidifier yet. My question is what kind would you recommend in my situation. My house is on a slab and the cold air return is through the attic down into the furnace unit. I have no one of attaching a bypass pipe to the supply ducts since it is underground. Is there a unit that I can install solely on the return side of the furnace?

Aprilaires' response:

Thank you for contacting Aprilaire.

Yes, you could install the 700 on either side of the furnace, and it does not have a bypass to go to the other side. You will need to run hot water to this humidifier.

We do not recommend installing any humidifier in an attic where conditions may freeze.

Other wise you could go with a stand alone unit, the 360. That goes through a wall. It does not connect to the HVAC system at all.

 

Can an in-line fan be added to my Aprilaire humidifier?

Wednesday, February 29, 2012 by Aprilaire Team
Consumer question:
 
Can I add an in-line fan to the humidifier bypass duct in order to increase the humidity?
 
Aprilaires' response:

Thank you for contacting us with regards to our model 400 Humidifier. This humidifier requires between 60-100 CFM to operate properly. If the air provided to the humidifier is lower than 60 CFM, an in-line fan may help increase the humidification rate, but it should only run with the furnace. As a drainless model, it does not humidify well without a source of heat to evaporate the water.