Is My Indoor Relative Humidity OK?

Wednesday, November 18, 2009 by Dennie Plomedahl

Question from Jim Brockway

"At 68 degrees in home, my humidity is 25.  Is that OK?"

Excellent question, Jim.  The answer is...it depends.  The critical temperature is not the temperature inside your home, but the temperature outside your home.  Have I confused you yet?  Let me explain.

The proper level of indoor relative humidity (RH) is a moving target based mainly on the outdoor temperature.  The lower the outdoor temperature, the lower your indoor RH% should be.  This is to prevent condensation from forming on your windows and in your walls.  An example would be a glass of your favorite beverage with and without ice in it.  Without ice, the beverage is warmer and the outside of your glass stays dry.  When you add ice to chill it, the outside surface of the glass is cold and begins to sweat.  Unless you have a coaster, you get water all over the surface it's sitting on, which can ruin it. 

Proper indoor RH is no different.  An Aprilaire whole-house humidifier with premium digital control utilizes an outdoor temperature sensor to continually adjust your indoor RH, providing maximum comfort and protection 24/7. 

Now, to answer your question, 25% indoor RH is about perfect when your outdoor temperature is at 0 degrees Fahrenheit.  That's pretty cold.  At 20 degrees Fahrenheit, you should be around 35%, and at 40 degrees or higher, you should be at 45% indoor RH.  I'm going to guess that your outdoor temperature is not zero and that you are in dire need of humidification.  Please contact your local Aprilaire dealer and schedule the installation of your Aprilaire humidifier with premium digital control today.

Thanks for the question, Jim. 
 

IAQ in Condos - response to Lynne's comment

Tuesday, November 17, 2009 by Tom Ruse
Commented on by Lynne Benoit at 11-17-2009 3:46 PM (UTC)
 
We have been told we need a unit in the condo and it cannot go in the attic because of freezing. The cost is prohibitive. What alternatives do you have?


Lynne, I couldn't tell if you were inquiring about a DEhumidifier (to take moisture out) or a Humidifier (to add moisture when heating your home dries out your air).

If you need to DEhumidify, Aprilaire offers a stand-alone high capacity unit that can be used in any room and doesn't require ducting. You just need a floor drain, or if you want to drain it to the outdoors, possibly add a condensate pump.


If you need a humidifier, Aprilaire model 350 or 360 are self-contained units that draw air from one room, say a laundry room or utility closet, humidifies it and sends it through the wall into living space.

Your best bet is to call a local Aprilaire dealer to assess your spedific needs.

As a last resort, if these alternatives don't work for your condo for some reason, then you should consider portables. They are not as efficient and they do require extra maintenance, but are better than nothing.

Thanks for asking!


 

Aprilaire Releases New 8400 Series Thermostat

Friday, November 13, 2009 by Justin Randall
Aprilaire’s new 8400 Thermostat is a great way to control your heating and cooling system.  It has a large easy to read screen, fan circulation mode for improved indoor air quality and because it’s programmable it will save you up to 30% off your energy bills!  Learn more here.



Dehumidify Your Entire Home

Friday, November 13, 2009 by Dennie Plomedahl

It's November 11, 2009 and....what's up with this weather?  We are experiencing unseasonably warm temperatures and an excessive amount of rain in WI which has led to high levels of indoor relative humidity (RH).  And although it's warm for the season, it's not warm enough  for air conditioning, which means your indoor RH can make you uncomfortable and lead to other problems such as mold or mildew.

Aprilaire has your whole-house solution
Aprilaire is a leading manufacturer of whole-house dehumidifiers.  They work in conjunction with your home's HVAC system to remove excess moisture from every room of your home.  Aprilaire also puts you in control of your indoor RH.  Our dehumidifiers operate to the level of RH that you dial in, ensuring your comfort and protection year-round, regardless of the temperature.

Call your local Aprilaire dealer and schedule the installation of your Aprilaire whole-house dehumidifier today.  You'll be glad you did.

Aprilaire - fresh ideas for indoor air.

DYI - Hey, I can handle it!

Thursday, November 12, 2009 by Tom Ruse
In my last post, I quoted a do-it-yourselfer who installed his own humidifier. I quoted him because he pointed out the energy savings story behind proper humidity levels; an often overlooked benefit of controlling your humidity.

I also discouraged DIY installs. Here's another perfect example. Here, the guy explains how badly the previous owner of his house had botched a humidifier install, so now HE'S going to "do it right". And yet, read how many questions this genius has! Oh yeah. He's real sure of himself!  After reading this, how confident are YOU that it'll be done right!?

Hey, nothing wrong with DIY in general. Contractors love em because when the jobs get botched, guess who gets called to fix it? That's right! The contractor. After calling the "buddy down the street who knows alot about alot of stuff", or the "uncle who does his own electrical", or that "what's-his-name-handyman"....all to save a buck.....the right answer is to call a pro.

Humidify for Energy Savings, Health AND Comfort

Wednesday, November 11, 2009 by Tom Ruse
Here's a shameless copy and paste of a customer review on Amazon. I hesitate to show this, because it's from a do-it-yourselfer.

We DON'T RECOMMEND installing these units yourself. We get all kinds of complaints from homeowners who tried and failed. IT'S NOT WORTH IT! Spend the extra money and call a qualified HVAC contractor! It's a one-time deal. Don't cheap out!

Besides, if you install one yourself, it NULIFIES THE WARRANTY!

Anyway, the point is ENERGY SAVINGS! With proper humidity, IT'S FOR REAL!



5.0 out of 5 stars Aprilaire Model 700 Humidifier, August 4, 2008
By BigCheese (Wisconsin) - See all my reviews
Amazon Verified Purchase(What's this?)
Easy to install and automatically adjusts to keep house comfortable while preventing too much moisture and condensation from forming on windows. With proper humidity control we were able to reduce thermostat setting by 3-5ºF and pocket the fuel savings.
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Aprilaire - The Cure for Dry Air

Friday, November 6, 2009 by Dennie Plomedahl

It's November 5, 2009....Do you know what your indoor relative humidity (RH) level is?  If you own an Aprilaire humidifier with automatic digital control, you do.

Heated air is dry air
It's a fact that the air in your home dries out when your heat comes on with the cold winter
season.  This brings on all the ailments associated with dry air: annoying shocks from
static electricity, dry, itchy skin, feeling "too cold" despite normal thermostat settings,
irritated sinuses, sore throats, and more.  These symptoms cause unneeded suffering and
leave you miserable.  This is no way to live.

A whole-house humidifier from Aprilaire with automatic digital control is your solution to dry air.  It works in conjunction with your home’s HVAC system to add soothing moisture to every room of your home.  And the digital control confirms the RH% in your home, giving you peace of mind that Aprilaire is on the job, protecting you and your family from the devastating effects of dry air.

Contact your Aprilaire dealer and schedule the installation of your whole-house humidifier today.  You'll be glad you did.

Aprilaire - Protecting your family from dry air for over 50 years!
 

I am interested in your home ventilation

Monday, October 26, 2009 by Tom Ruse

I am interested in your home ventilation system to provide a healthy air exchange in our house.

----

Mary, thanks for asking. Aprilaire has a couple of choices when it comes to ventilation systems. One is an Energy Recovery Ventilator (ERV) which is better for larger homes and and in addition to adding fresh air, can reduce excess humidity levels.

The other is the Aprilaire Ventilation Control System, which is less complicated (and less expensive) than an ERV, but still provides fresh air into your home in a much more controlled way than passive ventilation that is often standard in most home construction practices; especially from years ago.

Ventilation Control System uses a sensor to "test" the outside temperature and humidity conditions so that it only allows fresh air into your home when the conditions are less severe from a temperature and humidity standpoint. The results are that you get fresh air in your house without letting in severely humid, hot or cold air. So you can maximize energy efficiency.

It's important to do your homework, Mary; which by your inquiry it appears that you are. Ultimately you'll need to talk to a indoor air quality specialist in your area to assess your home's specific needs before you make a decison.  A good place to start is our Find A Dealer locator on our home page.

Top Five Questions to Ask When Getting a New Furnace or Air Conditioner

Thursday, October 22, 2009 by Pat Reid

Top Five Questions to Ask When Getting a New Furnace or Air Conditioner

1.) For my home's size, what do you see is the most appropriate equipment size (furnace, heat pump, air conditioner).

2.) What would be the least expensive to buy? Least expensive to run?

3.) How does my entire system help or hurt in delivering air to all parts of my home?

4.) What other factors could contribute to my family's comfort besides buying a new furnace/air conditioner? Like new ducts, more insulation, or zoning? (Zoning is the ability to control what part of your home is heated or cooled. Almost every multi story home in America could benefit from zoning)

5.) Since I don't know all of the pieces that make up a heating and air conditioning system. Can you provide me or point me in a direction to learn what a basic list of major componants looks like? I want to fully understand what I need and what I would like to have before I select a contractor to do the work.

A frustraition for both the homeowner and the contractor is confusion over what equipment is needed and what equipment is desired. Some homeowners believe that all contractor quotes are based on the same criteria. The more exact you can be with what you need and what is required can help the bid process significantly. If you're spending $5,000 to $20,000 then you need to take charge of the education process!

Aprilaire is Your Whole-House Humidifier Solution

Tuesday, October 20, 2009 by Dennie Plomedahl

You know you need a humidifier.  You understand all the benefits that come with properly humidified air: health, comfort, protection of assets, and energy savings.  Now comes the tricky part; which humidifier do you buy?

Answer these three questions before you purchase
There are three simple questions you need to ask yourself to determine which humidifier is best for you:

1) Is noise important?
2) Do you have children?
3) How much humidification do you require?

We covered items one and two in our last blogs.  Let's finish up with number three today by asking how much humidification do you require.  Or, put another way, how many rooms do you have and how big are they?

Your house has more than one room
Unless you live in a one-room efficiency, you probably have 2-3 bedrooms, a living room, a kitchen, and more.  It would take one portable humidifier for every room in your home to adequately increase your comfort and protect your valuable possessions.  That's five or more units to fill and clean every day.  And, have the remote control for your TV handy as you'll have to crank up the volume to get over all the noise.

A whole-house humidifier from Aprilaire is your best solution.  It works in conjunction with your home’s HVAC system to add soothing, protecting moisture to every room in your home.  It operates quietly and efficiently, with only annual maintenance required: no tanks to fill and clean, no noise, no hassles.

Call your Aprilaire dealer and schedule the installation of your whole-house humidifier today.  You'll be glad you did.

Aprilaire - providing all the humidification you need for over 50 years!
 

Protect Your Children with an Aprilaire Humidifier

Friday, October 16, 2009 by Dennie Plomedahl

You know you need a humidifier.  You understand all the benefits that come with properly humidified air: health, comfort, protection of assets, and energy savings.  Now comes the tricky part; which humidifier do you buy?

Answer these three questions before you purchase
There are three simple questions you need to ask yourself to determine which humidifier is best for you:

1) Is noise important?
2) Do you have children?
3) How much humidification do you require?

In my last blog we explored question number one.  Today, let's look at number two.  Why do we ask that?  The answer is easy; safety.  Warm mist humidifiers use a heating element to heat the water and can have very hot surfaces.  These portable humidifiers sit out in the open in your home where your children can touch them.  OUCH!

Aprilaire has your safety solution.  A whole-house humidifier from Aprilaire works in conjunction with your home’s HVAC system, out of sight and out of reach of your curious little ones.  And, unlike portable humidifiers that add moisture to only one room at a time, Aprilaire distributes soothing moisture throughout your entire home, protecting your family members from dry air no matter what room they're in.

Call your Aprilaire dealer and schedule the installation of your whole-house humidifier today.  You'll be glad you did.

Aprilaire - protecting your family for over 50 years!
 

Now is the Time to Maintain Your Humidifier

Monday, October 12, 2009 by Dennie Plomedahl

Comment from Denise
It's time for me to replace the filters on my Aprilaire humidifiers.  Please contact me with information on how to do that.  Thank you.

Hi Denise,
The filters you refer to are called water panel evaporators and they are the heart of an Aprilaire humidifier.  This is where the moisture is picked up by the air in your heating system, and from there is distributed throughout your home.  To maintain optimum humidifier performance, it is recommended that you change this item on an annual basis.

The best way to have your humidifier properly serviced is by your local Aprilaire dealer.  Your local dealer will have the expertise to not only change out the water panel evaporator, but also to check other critical aspects of the humidifier to ensure it performs properly this upcoming heating season. 

If you feel you can do it yourself, you can still purchase the water panel evaporator over
the counter from your local Aprilaire dealer.  If you don't have a dealer, you can purchase from the Aprilaire e-store.  All orders ship out same day for your convenience.

Thank you for your inquiry, Denise.  And thank you for supporting Aprilaire.

 

Don't Lower Your Temperature to Dehumidify

Wednesday, September 30, 2009 by Dennie Plomedahl

Do you lower your thermostat to the point where you are uncomfortably cold just so you can remove excess humidity from your home?  Are you tired of feeling cold and clammy, tired of wearing a sweater in your home in the summertime?  Did you know there is a whole-house solution that not only removes moisture from your home, but allows you to raise your thermostat setting so you can once again call your home a comfortable place to live?

Aprilaire has your moisture removal solution
A whole-house dehumidifier from Aprilaire works in conjunction with your home's HVAC system to remove excess humidity from your home.  And, unlike an air conditioner that controls to temperature, an Aprilaire dehumidifier is controlled by a dehumidistat that constantly measures the relative humidity (RH) in your home and controls the moisture level to the setpoint that you determine.

What does that mean to you?  First of all, your home and other valuable assets are protected from the damage of mold and other moisture-related problems.  Second, you can tuck away your sweater and live in comfort once again because your home will be a more comfortable place to live.  However, be prepared to host more parties, because once your friends and neighbors have experienced your most comfortable environment, you'll have the most popular house on the block.

Aprilaire - making homes more comfortable for over 50 years.
 


Choosing the Right Humidifier

Tuesday, September 22, 2009 by Dennie Plomedahl

You know you need a humidifier.  You understand all the benefits that come with properly humidified air: health, comfort, protection of assets, and energy savings.  Now comes the tricky part; which humidifier do you buy?

Answer these three questions before you purchase
There are three simple questions you need to ask yourself to determine which humidifier is best for you:

1) Is noise important?
2) Do you have children?
3) How much humidification do you require?

Today, let's explore question number one.  How important is noise in your home?  Portable humidifiers have fans to move the moisture from the holding tank into the room.  Fans can make quite a bit of noise.  If your humidifier is sitting in your living room, will you have to turn up the television or stereo so you can hear it over the humidifier?  If it is in your bedroom, will you be able to sleep with all that noise?  Also, portable humidifiers only provide moisture to the room they are in, so you will need several of them to properly humidify your home.  That's a lot of extra, unnecessary noise.

If noise is an issue in your home, Aprilaire is your humidification solution.  An Aprilaire humidifier installs on your home’s HVAC system, out of sight and out of mind, quietly providing soothing humidification throughout your entire home.  And, unlike portable humidifiers, Aprilaire has no tanks to fill and clean and only requires annual maintenance.

Call your Aprilaire dealer and schedule the installation of your whole-house humidifier today and quietly add soothing moisture to your home tomorrow.

Aprilaire - quietly adding moisture to homes for over 50 years. 
 

Study Shows Healthy Levels of Humidity Can Control Spread of Flu Viruses

Friday, September 18, 2009 by Dennie Plomedahl

Did you know...proper levels of humidity can reduce influenza survival, transmission, and seasonality.  Studies done at Oregon State University indicate the key to reducing airborne tranmission of the flu is maintaining the proper levels of humidity as measured by absolute humidity.  Absolute humidity is the measure of the actual water vapor content of the air irrespective of temperature. 

Adding moisture is the key
In cold winter months when your furnace is heating and drying the air, you cannot sustain proper levels of humidification without adding moisture.  In other words, you need a humidifier.  The addition of a humidifier to your home will make you more comfortable, protect your belongings from the ill-effects of dry air, and, as this study shows, protect your health from the devastating effects of the flu.

Your local Aprilaire dealer has your best solution for proper humidity.  Aprilaire humidifiers work in conjunction with your home's HVAC system to add moisture to every room of your home, ensuring your health and comfort regardless of which room you are in.  Call your Aprilaire dealer and schedule the installation of your whole-house humidifier today.  This is one of the most important calls you can make in protecting the health of your family this upcoming flu season.  Maintaining healthy humidity levels is an important part of a comprehensive strategy you can use to reduce the spread of viruses.  Keeping surfaces clean and avoiding contact with others infected are also essential.

Aprilaire - protecting your family’s health for over 50 years.
 

Why You Need a Whole-House Dehumidifier

Thursday, August 27, 2009 by Dennie Plomedahl

Did you know....There's nothing like a third party endorsement to prove your point.  For example, as an Aprilaire employee, I am more than willing to explain all the reasons why you need to install a dehumidifier in your home: comfort, protection, health, and energy savings.  Of course, you'll say all I want to do is sell more Aprilaire product.  But what if you heard this from someone who did not have a vested interest in any company’s product?  Would you be more apt to listen?  Probably so.

The Natural Handyman
Jerry Alonzy, a.k.a the Natural Handyman, makes a living by providing homeowners sensible advice pertaining to home-related topics.  In an article on dehumidifiers, he talks about everything from why you need one to how to purchase the right one for your needs.  He has some excellent advice on brand choice and where to buy.  He says he always asks himself the following questions: "If this product needs service or parts, can I get them locally?" and "Will this company be in business a year...or 5 years from now?” 

The answer is Aprilaire
Aprilaire is the most respected name in whole-house dehumidification for a reason.  First, our products are installed by respected HVAC professionals in your community.  Their livelihoods depend on treating you, their customer, the way you wish to be treated.  Second, Aprilaire has been doing this longer than anyone else.  We are the experts in whole-house comfort and protection.  Our reputation for quality is second to none.

Contact your local Aprilaire dealer and schedule the installation of your whole-house dehumidifier today.  You'll be glad you did.

Aprilaire - providing comfort and protection for over 50 years!
 

Our humidifiers run hot and cold

Wednesday, August 19, 2009 by Tom Ruse

As we move into the fall humidifier season, one question that gets asked a lot has to do with our advice on water temperature. When given the choice, why choose hot water over cold water to run to your Aprilaire humidifier
?

There are three main reasons. The first is performance. Our furnace-mounted humidifiers (except the drainless models) can get a performance boost by supplying hot water. We would recommend up to 140°F water to see up to 30% increased evaporation. For example, a model 600M humidifier on a furnace with 120°F air and 55°F water should evaporate 0.7 gal/hr for each hour it runs. By increasing the water temperature to 140°F, it boosts that 0.7 by 30% (.21 additional) for .91 gal/hr. Over the course of a heating season, estimating total usage at 600 hours, this translates to an additional 126 gallons of water put into the air.
 

The second reason is comfort. The more quickly the humidifier adds water to the air, the more quickly the air feels comfortable. This eliminates common complaints about too-dry air, itchy skin, dry, sore throats and static shocks.
 

The third is cost. This is often a sticking point. Does it cost more to heat the water with your water heater or to use the additional furnace and humidifier run time to increase humidity? Well, at 0.7 gal/hr, it takes the humidifier an additional 180 hours of furnace run time to create 126 gallons of evaporation. The water still needs to be heated so that it will evaporate. Is it more efficient to heat it with your HVAC system's hot air or with a water heater? Most likely it’s your water heater. Over the course of the humidifying season, the humidifier is evaporating the same amount of water, but by using hot water, it’s actually using less water to reach the same amount of soothing evaporative vapor.

Dehumidify and Save $$$

Wednesday, August 19, 2009 by Dennie Plomedahl

Did you know.....You can save money on your air conditioning bill by adding a whole-house dehumidifier to your HVAC system.  Studies show that you can save up to 18% on your electric bill and be more comfortable at a higher temperature.

It's not the heat, it's the humidity
Humidity control is key when it comes to comfort.  When you lower your relative humidity (RH) to a range of 40% to 60%, you can actually raise the setting on your thermostat and be more comfortable.  Why is that?  Lowering the RH allows your body’s natural cooling system, perspiration, to operate more efficiently, eliminating the need to lower the temperature and make your air conditioning system work harder than it has to.  Studies show that by raising your thermostat setting 3 degrees, you can achieve up to 18% savings!

Aprilaire has an entire family of whole-house dehumidifiers that work in conjunction with your home’s HVAC system to properly dehumidify your entire house.  And, unlike noisy, portable dehumidifiers that take up space in your living room, Aprilaire works quietly in your equipment room.  Out of sight and out of mind, just the way it's supposed to be.

Call your Aprilaire dealer and schedule your installation today.  You'll be glad you did.

Aprilaire - Keeping you comfortable and saving you money for over 50 years.
 

MERV Explained - Garbage In , No Garbage Out

Friday, August 7, 2009 by Tom Ruse

What is a MERV Rating?

 

MERV, which stands for Minimum Efficiency Reporting Value, is a rating that was developed by ASHRAE (the American Society of Heating, Refrigerating, and Air-Conditioning Engineers) used to assess the filtering power of a furnace filter/air cleaner.

The MERV scale consists of ratings from 1 to 16, with filter performance being greater as the number increases. On the MERV scale, dirt particles are graded from 0.3 microns to 10 microns. A micron is 1 millionth of a millimeter, and to give you an idea of just how small that is, you can look at the size of a single human hair. The average strand of human hair is about 100 microns thick, so imagine just how small 0.3 microns of dirt is!

 

Why is MERV Rating Important?

 

When you’re purchasing an air conditioner or furnace filter for your home, you want to be sure that you are buying a filter that will keep the air in your home clean. While all Aprilaire air cleaners will provide you with the filtering efficiency needed to improve the air quality of your home, depending on the particular needs of your family, you may require a filter that has a higher MERV rating, like the Aprilaire Model 5000 Electronic Air Cleaner.

Cases in which this is likely are those when you or someone in your home suffers from allergies, respiratory problems, or other similar incidences. Then again, you may just want to get the best filter for your family so that the indoor air quality around your home is the best it can be.

With Aprilaire AIr Cleaners, it's
Garbage in, NO Garbage out!

Green Renovation

Friday, August 7, 2009 by Tom Ruse
This is kinda cool. Aprilaire is sponsoring a big green renovation project in Florida. I just wrote the press release about it so you can read all the gory details below.

Cool site about it too.

And here.


And here's the press release......

Aprilaire Sponsors Terre Verde Green Renovation Project

Control of indoor air quality at the forefront of “Greenovation”

 

Madison, Wis. – Aprilaire, manufacturer of products that provide whole-house solutions to indoor air quality problems, is sponsoring a massive renovation project in Florida by providing the latest technology in air filtration, humidity control and zoned temperature control systems.

 

The project is Terre Verde, a 1970’s Florida-style ranch home adjacent to the Ocala national forest in central Florida. The home has been virtually untouched with any improvements in its entire 40 years.

 

Dr. Anna Marie, health specialist for The Weather Channel and host of the syndicated better living show YOUR LIFE WITH DR. ANNA MARIE, is leading this green renovation project to transform this home into an eco-friendly, energy efficient and ultimately healthy home.

 

Part of the renovation will employ new building technologies to make Terre Verde much tighter in order to save energy. While good for the pocket book and the environment, these kinds of advancements lead to the increase of indoor air pollutants – houses that don’t breathe like they use to. 

 

Working with local Aprilaire representatives and indoor air quality specialists, Aprilaire has installed the latest in air cleaning technology with One Touch active control, allowing the homeowner to control when and how much air cleaning takes place based on their lifestyle and need. Also provided is Aprilaire high-capacity Central Dehumidification and Zoned Comfort Control; a system which provides for focusing temperature control in specific areas of the home only where and when it is needed.

 

“These products help save energy by providing comfort while running air conditioning less often, but that’s just the beginning, noted Dr. Anna Marie, “They also provide for a much healthier, more sustainable environment by dramatically controlling the growth of mold and mildew, and trapping airborne allergens and other harmful particles from the entire home. Aprilaire products work together to protect the home’s furnishings, materials and of course it’s inhabitants. And that’ll be me, eventually!”

 

“Aprilaire is committed to the project and to help promote sustainable living, said Tom Ruse, Marketing Communications Manager. “We’re excited to help showcase the latest technologies available to make homes healthier, more comfortable and energy efficient”.

 

Terre Verde will be showcased at the Lake County Florida Builder Association’s Parade of Homes in March 2010.  

 

Aprilaire (www.aprilaire.com)

Aprilaire has been a brand leader in the indoor air quality industry for over 60 years. The company designs, develops, manufactures and distributes whole-home indoor air quality products that provide comfort, health, energy efficiency, and the protection and preservation of the home. For more information on central air cleaners, visit www.aprilaire.com.