---
title: "Passive House Standard Energy Efficiency Canada | AVANORTH"
canonical_url: "https://avanorth.ca/blog/passive-house-standard-ultimate-energy-efficiency"
last_updated: "2026-03-10T07:33:40.132Z"
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description: "Passive House guide: superinsulation, airtightness, HRV, performance targets, and wall assemblies for ultimate energy efficiency in Canadian construction."
"og:description": "Passive House guide: superinsulation, airtightness, HRV, performance targets, and wall assemblies for ultimate energy efficiency in Canadian construction."
"og:title": "Passive House Standard Energy Efficiency Canada"
"twitter:description": "Passive House guide: superinsulation, airtightness, HRV, performance targets, and wall assemblies for ultimate energy efficiency in Canadian construction."
"twitter:title": "Passive House Standard Energy Efficiency Canada"
---
AVANORTH Home
**Green Building**·April 10, 2026· 4 min read
# **Passive House Standard: The Ultimate in Energy Efficiency**
The Passive House (Passivhaus) standard achieves 90% heating energy reduction through superinsulation, airtight construction, high-performance windows, and heat recovery ventilation. It represents the gold standard for energy-efficient buildings.
**AVANORTH Team**
AVANORTH Construction
The Passive House standard, developed in Germany in 1991, represents the most rigorous energy efficiency standard for buildings in the world. A certified Passive House uses up to 90% less heating and cooling energy than a conventional building. In Canada's cold climate, this translates to heating demands so low that a small heat pump or even a post-heater on the ventilation system can keep the entire building comfortable in January.
---
## Core Passive House Principles
| Principle | Target | How Achieved |
| --- | --- | --- |
| Superinsulation | Walls R-40 to R-60+, Roofs R-60 to R-80+ | Thick insulation layers, advanced assemblies |
| Airtight construction | 0.6 ACH50 or less | Continuous air barrier, meticulous sealing |
| High-performance windows | U-value 0.80 W/m2K or better | Triple-pane, insulated frames, Low-E, gas fill |
| Thermal bridge-free design | Minimal thermal bridging | Continuous insulation, detailed connections |
| Heat recovery ventilation | 75%+ heat recovery efficiency | HRV or ERV with high-efficiency cores |
---
## Performance Targets
| Metric | Passive House Classic | Passive House Plus | Passive House Premium |
| --- | --- | --- | --- |
| Heating demand | 15 kWh/m2/yr | 15 kWh/m2/yr | 15 kWh/m2/yr |
| Cooling demand | 15 kWh/m2/yr | 15 kWh/m2/yr | 15 kWh/m2/yr |
| Primary energy (renewable) | 60 kWh/m2/yr | 45 kWh/m2/yr | 30 kWh/m2/yr |
| Renewable energy generation | Not required | 60 kWh/m2/yr | 120 kWh/m2/yr |
| Airtightness | 0.6 ACH50 | 0.6 ACH50 | 0.6 ACH50 |
> **Perspective:** A typical new Ontario home meeting code uses approximately 80-120 kWh/m2/year for heating. A Passive House uses 15 kWh/m2/year. For a 200 m2 home, that is the difference between $2,400-3,600/year and $450/year for heating (at current Ontario gas and electricity prices). Over 30 years, the savings are substantial.
---
## Superinsulation Strategies for Cold Climates
### Wall Assemblies
- **Double-stud wall:** Two parallel 2x4 or 2x6 stud walls with a gap filled with blown cellulose or mineral wool. Total wall thickness 300-400 mm. R-40 to R-55. Eliminates thermal bridging through studs.
- **Exterior insulated 2x6 wall:** Standard 2x6 stud wall with 100-150 mm of continuous mineral wool or rigid foam on the exterior. R-35 to R-50.
- **Structural insulated panels (SIPs):** Factory-made panels with foam core (EPS or polyurethane) between OSB skins. R-30 to R-50 depending on thickness.
- **Insulated concrete forms (ICFs):** Concrete walls with permanent EPS forms providing insulation on both sides. R-25 to R-40. Excellent for basement/foundation in Passive House projects.
### Foundation
The foundation is often the weakest thermal link. Passive House foundations typically use:
1. Insulated raft slab (slab-on-grade on continuous rigid insulation, minimum R-30 under slab and at perimeter)
2. Full-depth insulated basement with continuous exterior insulation extending below frost line
3. Insulated frost-protected shallow foundation (in milder zones)
---
## Airtightness
The 0.6 ACH50 target means that at a pressure difference of 50 Pascals, no more than 60% of the building's air volume leaks out per hour. For comparison:
| Building Type | Typical ACH50 |
| --- | --- |
| Old unretrofitted house | 8-15 ACH50 |
| Average new house (OBC code) | 3.0-3.5 ACH50 |
| Energy Star house | 2.0-2.5 ACH50 |
| R-2000 house | 1.5 ACH50 |
| Passive House | 0.6 ACH50 or less |
Achieving 0.6 ACH50 requires a designated air barrier layer that is continuous and unbroken around the entire building. Every penetration (pipe, wire, duct, window, door) must be individually sealed. Blower door testing during construction (not just at completion) is essential to find and fix leaks.
---
## Heat Recovery Ventilation (HRV)
Because the building is so airtight, mechanical ventilation is essential. The HRV provides continuous fresh air while recovering 75-90% of the heat from the exhaust air. In a Passive House, the HRV is the primary ventilation and significantly contributes to the heating system.
### HRV vs. ERV in Canada
- **HRV (Heat Recovery Ventilator):** Recovers sensible heat only. Best for colder, drier climates where humidity is not excessive. Standard choice for most of Ontario.
- **ERV (Energy Recovery Ventilator):** Recovers both heat and moisture. Better for mixed climates or homes with humidity concerns. Prevents excessive winter dryness.
> **AVANORTH Capability:** We have Certified Passive House Tradesperson (CPHT) trained team members and have completed Passive House projects in Ontario. The premium for building to Passive House standard is typically 8-15% over code-minimum construction. Given the dramatic reduction in operating energy and the superior comfort (no drafts, no cold spots, quiet), we believe it is the best investment a homeowner can make. As energy prices rise, the payback accelerates.
#passive-house #energy-efficiency #superinsulation
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