Heat loss through windows / Guides

Triple pane south facing windows on Ecohome's Demo House
Windows and doors

How to install windows for the best performance and durability

...heat flow is more dramatic. A thicker coloured line indicates a longer time taken for heat to move through it. Or in layman terms - more heat in your house...

Hydro towers
Heating with electricity

Heating with electricity

...heat, but energy is also required to distribute that heat throughout your home. Heat loss can occur through ducts in spaces that you don't intend to heat, furth...

Balanced insulation levels in a home
Efficient home design

Balanced insulation: putting it where it does the most good

...heat loss: Yes, a bit more heat is lost through the ceiling than the walls, but not nearly as much as much as you might think. The rate of heat loss fr...

Thermal image showing where home heat loss is occurring.
Insulation and soundproofing

How insulation works

...heating and cooling, and in some respects, how durable it will be. The transfer of heat (or heat loss) occurs in 3 ways: conduction , convection and radiat...

When should you replace windows
Windows and doors

When should you replace old windows?

...through added energy savings from that individual window. How long will it take to save $1,600 worth of heat through a better window, and will you even live tha...

Triple-glazed, argon-filled windows in the Ecohome Demo House
Windows and doors

Choosing windows - Material options and function

...heat loss on northern facing windows, but high quality southern facing windows can actually offer a net gain through passive solar heat collection. Passive sola...

Triple pane, high performance windows
Windows and doors

What to look for when buying windows

...windows which further determines how much heat comes in and how much goes out. Low E coatings on windows will reduce heat loss by reflecting infrared heat back ...

The difference between air barriers and vapour barriers
Air and vapour barriers

The Difference between air barriers and vapour barriers

...through it, but air cannot pass through it. So if you were to have a home with no windows and no vapour barrier but simply a sealed gypsum board box all around,...

Icicles are an indication of heat loss, which can cause damage to insu
Wall assemblies - renovation

Winter troubleshooting - are you ready for the cold?

...windows. Before getting all gung-ho about replacing windows, a seasonal solution can be covering them with a thin sheet of plastic; that will prevent heat loss,...

Off grid, passively heated and cooled house in the Gatineau Hills, Que
Off-grid and Net-Zero Housing

Off grid and passively heated, this house in Low, Quebec is aiming for LEED certification

...heating and cooling - invest in really good windows, face as many of them south as you can to gain heat, and install heavy duty insulation to keep that free hea...

Passively-heated off-grid LEED Gold home
Off-grid and Net-Zero Housing

Off-grid living blog - energy modeling projections and real performance

...heat gain coming through all of the windows, to the tune of 4,306 kWh/year. Putting these figures together shows that over 31% of the total heating needed for t...