Ontario

Summary

The current building energy code is Part 12 of the Ontario Building Code, which is split in to two sections (2012 amendments), SB-10 for large buildings and SB-12 for Housing (3 stories or less). The building code is a provincial regulation that applies across Ontario. Both sections address the thermal envelope requirements and energy consumption is addressed through performance requirements for most systems including, heating, cooling, ventilation, hot water systems and lighting (SB-10 only). Compliance can be shown through meeting prescriptive measures or an alternative simulated (reference building) performance method.

Ontario has a long history of building energy codes with the first code for energy efficiency of buildings being released in 1975. Since then, Ontario has continued to improve requirements with the current code including many dynamic aspects; low maximum U-value requirements, minimum efficiency requirements for most systems, strict air-tightness and thermal bridging requirements, increased performance labeling through EnerGuide, performance-based requirements for residential buildings undergoing renovation, code development overseen by a technical advisory committee and well implemented dissemination of training and information to the public. 

General Information

Full Title of Code

Ontario Building Code - Part 12 Resource Conservation (SB-10 and SB-12) Amendment.

Year of Adoption

2012

Date of Enforcement

Sunday, January 1, 2012

Authority in Charge

Ministry of Municipal Affairs and Housing Building and Development Branch.

Link

https://www.publications.serviceontario.ca

Link to Relevant Web Page

http://www.mah.gov.on.ca

Remit of Code

Geographical Coverage

Ontario

Code set at:

Regional/States Level

Coverage

Coverage of Building Code:

  • Residential buildings
    • One family
    • Multiple family buildings
    • The energy performance budget is based and depends on the type of building, location etc. No EUI value available.
  • Commercial buildings
    • Offices
    • Retail and wholesale
    • Hotels
    • Hospitals
    • Educational buildings
    • The energy performance budget is based and depends on the type of building, location etc. No EUI value available.
  • Public buildings
    • Offices
    • Hospitals
    • Educational buildings
    • The energy performance budget is based and depends on the type of building, location etc. No EUI value available.

GBPN Climate Classification:

  • Heating Based

Type of Building Code

Type of Building Code:

  • Model code, frame or actual code:
    Provincial Code (State Code).
  • Prescriptive Codes:
    Predominantly prescriptive requirements, Sb-10 and SB-12. Prescriptive requires that the building conforms to a package of thermal insulation, window and mechanical system efficiency requirements. Energy efficiency design modeling and testing of the building is not required under this option.
  • Trade Off:
    Trade off method concerning the building envelope is available to large buildings.
  • Performance Codes for New Builds:
    Partially, calculations are based on a comparison with a prescriptive package (reference building).
  • Model / reference Building:
    Performance requirements are applicable if the design differs from the basic prescribed requirements, Sb-10 and SB-12. Performance refers to the alternative method of compliance - Energy Budget. Using this approach the designer must use recognized energy simulation software (such as HOT2000 V9.34c1.2 or newer), and submit documents which show that the annual energy use of the building is equal to a prescriptive package.

Energy Covered

Basis for Energy Requirements:

  • Final Energy:
    Site Energy - energy used onsite, renewable energy can be credited against total onsite energy used.
  • Life Cycle Assessment considered (embedded energy):
    Partially, no requirements at the design stage for residential buildings, however, LCA is considered when the prescriptive requirements are established for a new code. Large buildings are required to consider LCA when designing the building envelope.

Energy Uses and Functions Covered by the Code:

  • Heating
  • Cooling
  • Ventilation
  • Airtightness
  • Thermal bridging
  • Hot water
  • Building parts (lifts, pumps etc)
  • Lighting
  • Design, position & orientation of building
  • Heat recovery
  • Passive solar
  • Passive cooling
  • Natural ventilation
  • Solar protection
  • Daylighting requirements
  • Renewable Energy (solar, PV, others):
    Partially, no mandatory requirements at this stage, there are many local incentive programs where renewable systems are supported financially. Renewable energy produced can be credited against the allowed energy budget.

Enforcement

Enforcement Status of Code:

Mandatory

Type of Enforcement:

  • Local enforcement
  • Third party inspection

On-site Inspections Occur

  • During construction
  • Post completion

Certification to Support Enforcement of Code:

  • Inspection of boilers
  • Inspection of HVAC systems

Penalties for Non-compliance:

  • Fine
  • Refusal of permission to occupy
  • Refusal of permission to construct

Measures Supporting Enforcement:

  • Commissioning requirements
  • Airtightness testing required prior to compliance
  • Mandatory Computer Modeling
  • Training of Inspectors

Values for New Buildings

Residential Buildings - Energy Efficiency For Housing (SB-12), ZONE 1 - Compliance Packages for Space Heating Equipment with AFUE ≥90%

GBPN Climate Classification

Heating based

Coefficient for Comparison of Climate Zones

0.00

MeanMinMax
HDD (°C)440744074407
CDD (°C)322322322
U-Value (W/m²K)
Roof0.11Roof20.18
Wall0.24Wall2-
Floor0.18Floor2-
Window1.6Window22.8
Others---
Overall U-Value---
Window1Window2
G Value/SHGC--
Visible Transmission--
Percent--

Other Requirements Set for:

  • Thermal bridge demands
  • Ventilation:
    90% Space Heating Equipment Minimum AFUE
  • Domestic Hot Water COP - Heat Pump:
    0.57
  • Value for airtightness:
    n50 at 2.5 ACH for detached homes and n50 at 3.0 ACH for attached homes
  • Heat Recovery
  • Technical HVAC systems:
    Coefficient of performance of HVAC system is 90% Space Heating Equipment Minimum AFUE.
  • Efficient Lighting

Residential Buildings - Energy Efficiency For Housing (SB-12), ZONE 1 - Compliance Packages for Space Heating Equipment with AFUE ≥78 % and < 90%

GBPN Climate Classification

Heating based

Coefficient for Comparison of Climate Zones

0.00

MeanMinMax
HDD (°C)440744074407
CDD (°C)322322322
U-Value (W/m²K)
Roof0.11Roof20.18
Wall0.2Wall2-
Floor0.18Floor2-
Window1.6Window22.8
Others---
Overall U-Value---
Window1Window2
G Value/SHGC--
Visible Transmission--
Percent--

Other Requirements Set for:

  • Thermal bridge demands
  • Ventilation:
    78% Space Heating Equipment Minimum AFUE
  • Value for airtightness:
    n50 at 2.5 ACH for detached homes and n50 at 3.0 ACH for attached homes
  • Heat Recovery
  • Technical HVAC systems
  • Efficient Lighting

Residential Buildings - Energy Efficiency For Housing (SB-12), ZONE 1 - Compliance Packages for Electric Space Heating

GBPN Climate Classification

Heating based

Coefficient for Comparison of Climate Zones

0.00

MeanMinMax
HDD (°C)440744074407
CDD (°C)322322322
U-Value (W/m²K)
Roof0.11Roof20.18
Wall0.2Wall2-
Floor0.18Floor2-
Window1.6Window22.8
Others---
Overall U-Value---
Window1Window2
G Value/SHGC--
Visible Transmission--
Percent--

Other Requirements Set for:

  • Thermal bridge demands
  • Value for airtightness:
    n50 at 2.5 ACH for detached homes and n50 at 3.0 ACH for attached homes
  • Heat Recovery
  • Technical HVAC systems
  • Efficient Lighting

Energy Efficiency For large buildings (SB-10).

GBPN Climate Classification

Heating based

Coefficient for Comparison of Climate Zones

0.00

MeanMinMax
HDD (°C)440744074407
CDD (°C)322322322
U-Value (W/m²K)
Roof0.12Roof20.2
Wall0.29Wall20.45
Floor0.15Floor20.36
Window1.42Window22.56
Others---
Overall U-Value---
Window1Window2
G Value/SHGC0.350.36
Visible Transmission--
Percent--

Other Requirements Set for:

  • Thermal bridge demands
  • Domestic Hot Water COP - Heat Pump:
    Not known at this stage
  • Heat Recovery
  • Technical HVAC systems:
    Coefficient of performance of HVAC system is Not known at this stage
  • Efficient Lighting

Energy Efficiency For large buildings (SB-10).

GBPN Climate Classification

Heating based

Coefficient for Comparison of Climate Zones

0.00

MeanMinMax
HDD (°C)440744074407
CDD (°C)322322322
U-Value (W/m²K)
Roof0.12Roof20.2
Wall0.26Wall20.4
Floor0.15Floor20.32
Window1.42Window22.56
Others---
Overall U-Value---
Window1Window2
G Value/SHGC0.40.36
Visible Transmission--
Percent--

Other Requirements Set for:

  • Thermal bridge demands
  • Heat Recovery
  • Technical HVAC systems:
    Coefficient of performance of HVAC system is Not known at this stage
  • Efficient Lighting

Energy Efficiency For large buildings (SB-10).

GBPN Climate Classification

Heating based

Coefficient for Comparison of Climate Zones

0.00

MeanMinMax
HDD (°C)440744074407
CDD (°C)322322322
U-Value (W/m²K)
Roof0.19Roof20.53
Wall0.36Wall20.7
Floor0.19Floor20.61
Window3.12Window27.72
Others---
Overall U-Value---
Window1Window2
G Value/SHGC--
Visible Transmission--
Percent--

Other Requirements Set for:

  • Thermal bridge demands
  • Ventilation:
    Depends on the type and size of system.
  • Domestic Hot Water COP - Heat Pump:
    Depends on the type and size of system.
  • Heat Recovery
  • Technical HVAC systems
  • Efficient Lighting

Energy Efficiency For large buildings (SB-10).

GBPN Climate Classification

Heating based

Coefficient for Comparison of Climate Zones

0.00

MeanMinMax
HDD (°C)440744074407
CDD (°C)322322322
U-Value (W/m²K)
Roof0.12Roof20.18
Wall0.26Wall20.4
Floor0.15Floor20.32
Window1.42Window22.56
Others---
Overall U-Value---
Window1Window2
G Value/SHGC0.40.46
Visible Transmission--
Percent--

Other Requirements Set for:

  • Thermal bridge demands
  • Ventilation:
    Depends on the type and size of system.
  • Domestic Hot Water COP - Heat Pump:
    Depends on the type and size of system.
  • Heat Recovery
  • Technical HVAC systems
  • Efficient Lighting

Energy Efficiency For large buildings (SB-10).

GBPN Climate Classification

Heating based

Coefficient for Comparison of Climate Zones

0.00

MeanMinMax
HDD (°C)440744074407
CDD (°C)322322322
U-Value (W/m²K)
Roof0.12Roof20.18
Wall0.26Wall20.34
Floor0.15Floor20.29
Window1.42Window22.56
Others---
Overall U-Value---
Window1Window2
G Value/SHGC0.40.39
Visible Transmission--
Percent--

Other Requirements Set for:

  • Thermal bridge demands
  • Ventilation:
    Depends on the type and size of system.
  • Domestic Hot Water COP - Heat Pump:
    Depends on the type and size of system.
  • Heat Recovery
  • Technical HVAC systems
  • Efficient Lighting

Energy Efficiency For large buildings (SB-10).

GBPN Climate Classification

Heating based

Coefficient for Comparison of Climate Zones

0.00

MeanMinMax
HDD (°C)440744074407
CDD (°C)322322322
U-Value (W/m²K)
Roof0.15Roof20.39
Wall0.36Wall20.59
Floor0.19Floor20.61
Window2.56Window27.72
Others---
Overall U-Value---
Window1Window2
G Value/SHGC--
Visible Transmission--
Percent--

Other Requirements Set for:

  • Thermal bridge demands
  • Ventilation:
    Depends on the type and size of system.
  • Domestic Hot Water COP - Heat Pump:
    Depends on the type and size of system.
  • Heat Recovery
  • Technical HVAC systems
  • Efficient Lighting

Energy Efficiency For large buildings (SB-10).

GBPN Climate Classification

Heating based

Coefficient for Comparison of Climate Zones

0.00

MeanMinMax
HDD (°C)440744074407
CDD (°C)322322322
U-Value (W/m²K)
Roof0.1Roof20.16
Wall0.26Wall20.34
Floor0.15Floor20.25
Window1.42Window22.56
Others---
Overall U-Value---
Window1Window2
G Value/SHGC0.450.46
Visible Transmission--
Percent--

Other Requirements Set for:

  • Thermal bridge demands
  • Ventilation:
    Depends on the type and size of system.
  • Domestic Hot Water COP - Heat Pump:
    Depends on the type and size of system.
  • Heat Recovery
  • Technical HVAC systems
  • Efficient Lighting

Energy Efficiency For large buildings (SB-10).

GBPN Climate Classification

Heating based

Coefficient for Comparison of Climate Zones

0.00

MeanMinMax
HDD (°C)440744074407
CDD (°C)322322322
U-Value (W/m²K)
Roof0.1Roof20.16
Wall0.26Wall20.34
Floor0.15Floor20.25
Window1.42Window22.56
Others---
Overall U-Value---
Window1Window2
G Value/SHGC--
Visible Transmission--
Percent--

Other Requirements Set for:

  • Thermal bridge demands
  • Ventilation:
    Depends on the type and size of system.
  • Domestic Hot Water COP - Heat Pump:
    Depends on the type and size of system.
  • Heat Recovery
  • Technical HVAC systems
  • Efficient Lighting

Energy Efficiency For large buildings (SB-10).

GBPN Climate Classification

Heating based

Coefficient for Comparison of Climate Zones

0.00

MeanMinMax
HDD (°C)440744074407
CDD (°C)322322322
U-Value (W/m²K)
Roof0.15Roof20.39
Wall0.36Wall20.51
Floor0.19Floor20.5
Window2.56Window27.72
Others---
Overall U-Value---
Window1Window2
G Value/SHGC--
Visible Transmission--
Percent--

Other Requirements Set for:

  • Thermal bridge demands
  • Ventilation:
    Depends on the type and size of system.
  • Domestic Hot Water COP - Heat Pump:
    Depends on the type and size of system.
  • Heat Recovery
  • Technical HVAC systems
  • Efficient Lighting

Code History and Future Targets

General Process in Setting Requirements:

  • Stakeholders are informed of future targets far in advance:
    Stakeholders are involved in the development process and informed of future targets as soon as possible.

Zero Energy Targets:

  • All end uses are not included
  • There is not a realistic roadmap in place
  • There is no national target date set for nZEB
  • Links

Number of Earlier Codes

3

Multiple set of data:

  • Levels beyond minimum:
    SB-12 allows compliance through an increased performance labeling schemes called EnerGuide. As an optional performance compliance path EnerGuide houses are validated by NRCan authorized energy advisors and must achieve a rating of 80 or more when evaluated in accordance with EnerGuide administrative and technical procedures.
  • Year historic or aspirational codes (planned) :
    1975
  • Actual level of energy consumption in target
    • Relative target in percent:
      0

Supporting Measures

Incentives/Rewards to Encourage People to go beyond Minimum Level?

Schemes and incentive programs are available.

Involvement of Stakeholders in the Development of Codes

The advisory council is made up of stakeholders, initial comments are considered (informal) then there is a public consultation process, then feedback goes to the technical advisory committee. The technical advisory committee then review and make recommendations to the minister.

Level of Training Provided to Stakeholders Following Implementation of Code?

The Ontario Ministry of Municipal Affairs and Housing and its counterparts in other provinces have hosted training seminars on the building energy code and energy efficiency in houses. There are also specialized courses and online modules on issues like HVAC, building envelope and code updates.

Provision of Appropriate Information for General Public

Road trips where the requirements are explained in an public forum. There are also voice over slideshows, checklists and training courses available online.

Education Systems to Ensure Capacity

Education is provided.

Supporting Certification Schemes

EnerGuide Rating System to design energy efficiency upgrades during construction. ENERGY STAR® for New Homes promotes new homes that are more energy efficient than those built to minimum building codes. R-2000 homes meet an even higher standard for increased energy efficiency, indoor air quality and environmental responsibility in home construction.

Codes Free to Access?

http://www.mah.gov.on.ca/Asset9372.aspx?method=1 & http://www.mah.gov.on.ca/AssetFactory.aspx?did=9227