Air leakage / Guides

Why Electric Heating Systems are Best for Sustainable Homes
Heating with electricity

Heating with Electricity - The Best Choice for High Efficiency & Zero Energy Homes?

...airing an air source heat pump with a heat pump water heater can further save energy and money. Air source heat pumps are the most cost-effective type of heat pump for smaller homes (compared to ground source), and they have the additional benefit of doubling as air conditioning in summer. Only in very large or poorl...

Moving to the Countryside - How to make it Work
Lifestyle, location and commuting

Moving to the countryside? Here's how that can work...

...air barrier . Air leakage can be responsible for as much as a third of energy losses from a home due to hot air escaping through the smallest of holes. Again, having a clean indoor facility can make it easier to accomplish any task effectively, including properly air sealing walls. LEED Platinum prefab Kit house ...

Passive House certification - PHI or PHIUS? The Spring House Passive House
Passive House

Everything you need to know about Passive House certification

...airtightness of a building is calculated by measuring leakage - the volume of air (in cubic feet per minute, CFM) entering a building pressurized at 50 Pascals and dividing that measurement by the net air volume of the house. Simple enough. But does it make sense? After all, air leaks happen through a building’s shell ...

Heat Recovery Ventilation - Lunos video
HRV and ERV

Lunos ductless air exchanger

...air-sealed high performance home, bringing in fresh air and removing moisture. An HRV uses the heat in stale exhaust air to warm incoming fresh air. Until now, this has meant a centralized heat transfer core and a network of ducts feeding and drawing air throughout the home. With Lunos wall insert air exchangers that i...

How to Vent Roofs - the Methods, Vent Types, Fans
Walls and Roofs

Why Roofs need to be ventilated and how to ventilate a roof properly

...air rises, so there is always more air pressure at the higher points of any house or building, as in the top floor ceiling. And air will find any hole no matter how small it is. Wind pressure as well as interior mechanical ventilation also affects the air pressure in a home and will force air out any breach in your air...

Passive home designer Harold Orr, one of the original high performance homes
Passive solar home design

The principal designer of the house that inspired the global Passivhaus movement reflects on the project that started it all.

...Air lock entry at the doors. With an air tight building an air lock is not really of much value, the whole house acts as a air lock and air doesn't blow though the house because there are no holes for the air to flow through. Soffits designed to allow full sun in the winter and complete shade for the windows in the s...

BC Energy Step Code - Builder Design Guide &  Requirements explained
Building codes

The new BC energy step code: builder design guide & requirements explained - Vancouver

...air leakage targets, but that just means being a little more vigilant with the way air barriers are installed and the way breaches in the building envelope are sealed; such as plumbing, electrical and ventilation openings, and how to ensure windows and doors are properly sealed . New BC Energy Step Codes - A Step i...

Top Tips for Getting a House Ready for Winter
Wall assemblies - renovation

Winter preparation for your home - are you ready for the cold?

...air leaks can often be fixed with a tube of caulking . In fact, it can be good to do both. If you plan to cover a window with plastic, stopping air leaks first will prevent the plastic from ballooning out and ripping the tape seal. Read more here about how to install windows properly so they don't leak air Air leaks ...

Free Energy Audits, Net Zero Home Grants & Interest Free Home Renovation Loans
Grants and incentives

0% loans & Grants for Green Home Renovations & Construction - A Boost for Canadians in 2020

...aired. A large percentage of heat loss from a home is due to air leakage , so part of your energy audit will be a blower door test , which will help you find and fix air leaks. Our Quebec office recently had a full renovation which gave us an opportunity to try an air barrier spray for sealing air leaks , and we were...

LEED Homes

The 19 LEED for Homes Prerequisites

...air systems must have air filters with a minimum efficiency reporting value (MERV) ≥ 8 and ensure that air handlers can maintain an appropriate system pressure drop. Air filter housings must be airtight to prevent bypass or leakage. 9.1 Radon-resistant construction: Homes in high-risk radon gas areas must have prot...

Spray Foam Insulation - Is it Good or Toxic & Dangerous?
Insulation and soundproofing

Is spray foam insulation a good choice for your home? Or a toxic recipe for disaster?

...air will leak through spray foam after it sets (right after, at least) and as much as we advocate for airtight homes, that can be a very real problem in this case given the risk to health. It is a known fact that indoor air quality in homes can be heavily polluted, and several times more toxic that outdoor air. That’s ...