Humidity / Guides

stove hood bathroom fan central vac
Healthy indoor air quality

Removing dust and moisture from homes

...humidity down. Excess humidity in houses can cause moisture damage, but what is not often considered is that added energy consumption involved, as heating moist air requires significantly more energy than heating dry air. When using manufactured wood products for cabinetry, ask for formaldehyde-free plywood then at lea...

Basement Design for walls prevents mold & midlew when renovating & finishing
Healthy indoor air quality

Basement renovations: How to prevent mold when finishing basements

...humidity, which will cost you maybe $20 to $30 at most hardware stores. If you have an issue, and the humidity levels are off the scale, then chances are you've got a moldy basement even if you can't see it yet... To be certain, get a humidity monitor and track humidity levels, see here Top Tips: For a healthy, mol...

Frost in Attics: What causes Attic Ice? How to Fix it?
Roof assemblies - renovation

Why is there frost in my attic? Is ice in roofs a problem & How do I stop it?

...humidity by remembering to use bathroom and kitchen fans when showering and cooking, run a dehumidifier in the basement if needed, and don't hang laundry to dry indoors, unless of course your humidity is down around the 30% RH level then go for it. It will save some dryer energy and a little more humidity will make for...

Skylights can be problematic in a high performance home
Windows and doors

Are skylights an asset or a liability?

...Humidity (RH) is also a factor - condensation is worsened by higher levels of humidity in homes. Lowering humidity levels should make a difference. To further reduce those risks, it's best not to install skylights near humid areas like kitchens and bathrooms. If you already have one installed and it appears to be 'le...

Which Houseplants are Best to Clean Air & Remove Toxins?
Healthy indoor air quality

Which houseplants are best for purifying air? Ecohome investigates

...humidity levels, you have a problem that a fern isn’t going to solve. High humidity levels in basements leads to mold and mildew, and due to the natural stack effect of air flow, mold spores from your basement will find their way into the upper floors of your home. The first step to dealing with basement humidity is ...

Condensation on windows leads to mold & mildew in homes, ERV & HRV systems help

Ventilation & air exchangers

...humidity of 40% to 50% in indoor home environments. This range can be maintained under more or less all conditions with the only energy penalty being the electric for the blower to overcome the pressure drop in the system. If you need help choosing between an HRV & ERV system, see here Indoor air quality is importa...

What is Interstitial Condensation? (And how to stop it!)
Walls and Roofs

What is Interstitial Condensation in Walls or Roofs? (And how to stop it!)

...humidity levels in your home low enough, aim for below 40% Relative Humidity (RH), so step one would be humidity monitoring, followed by installing adequate heat recovery ventilation , and a dehumidifier sized properly for the volume of air you need to condition if necessary. Ironically, interstitial condensation is ...

Condensation on windows in our homes - why is it there? - how to stop it?
Walls and Roofs

Condensation on windows is a pain but is it a problem & how to stop it?

...humidity levels will control the growth of indoor mold – so this is the key. Condensation is a symptom of other issues Consider condensation as a symptom and not a cause of home humidity being too high, so, if there’s condensation happening on windows, the first step we’d suggest is to get hold of a hygrometer or h...

LEED Platinum prefabricated home Kit
LEED Homes

LEED® Platinum prefab kit home has superior air quality and performance

...humidity, CO, temperature) to calculate all possible variations between the indoor and outdoor environments. In fact, the indoor temperature varied at most by one degree Celsius during the winter, while humidity remained constant at 48%, highlighting the superb efficiency and performance of the house. In short, all thi...

How to Choose between an HRV and ERV system

Choosing between an HRV and an ERV

...humidity from the air being extracted to the incoming fresh (and dry) air to help keep the ambient internal humidity level at a reasonable value (between 40 and 60%) at all times. In summer, the humidity transfer in an ERV reverses and the humidity in outside air is removed before it is injected into the home. This s...

Heat Recovery Ventilation - Lunos video

Lunos ductless air exchanger

...humidity. Thus, in the manner of an ERV (Energy Recovery Ventilator), it helps to maintain the relative humidity of the air inside the house. In addition, frost problems are avoided in the device thanks to the frequent reversal of the direction of airflow. The ceramic core was tested at -35 ° C with a relative humidi...