high humidity / Guides

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?

...High humidity in homes First of all, if the relative humidity of air in your home is too high, work to lower it . Anything over 50% RH is a bit much; 35-40% or so is good for humans and houses alike. The more humid the conditioned space of your home is, the more condensation you will probably have in the home, and al...

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

Ventilation & air exchangers

...humidity is generally assumed to be the best for avoiding most health risks and irritants. It’s high enough that you won’t have cracked furniture, chapped lips or constant nose bleeds, and it’s not too damp for comfort, condensation or heat consumption. If you are in an older home, don’t panic. What we write in these...

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

Which houseplants are best for purifying air? Ecohome investigates

...high 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 humidit...

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 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 humidity meter or monitor to test the level of relative humidity in the home – because ironically the higher performance the home gets, with air barriers and better windows and doors,...

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...

Non-toxic building materials can improve home air quality
Healthy indoor air quality

Maintaining healthy indoor air quality

...higher on the food chain can have dangerously high levels, which in some cases includes humans. Air and water currents moving north have led to alarmingly high levels of flame retardants in polar bears, as well as people living in northern communities. Outside of household furnishings, to further reduce your exposure...

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!)

...high. It sure sucks to be homeowners sometimes! The good news though is that there are ways to prevent it so you can avoid these issues and costs. The most important thing is to keep the humidity levels in your home low enough, aim for below 40% Relative Humidity (RH), so step one would be humidity monitoring, follow...

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...

Living green wall
Healthy indoor air quality

Living walls: what they do and don't do

...humidity in a home should ideally be no higher than 50% (particularly in winter) for durability reasons. Troubleshooting this is easy; you can pick up a hygrometer fairly cheaply at a hardware store to monitor indoor relative humidity. If it's too high add a dehumidifier into the mix and the problem’s solved. ...

How to Choose between an HRV and ERV system

Choosing between an HRV and an ERV

...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 saves energy by reducing the load on air conditioning systems and/or dehumidifier. A high efficiency of humid...