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copyright 2016 Part9NRG and Qualistat

The 2014 Alberta Building Code section 9.36 Energy Efficiency and NECB are divided into 3 main scopes, that cover 3 main areas of the buildings energy efficiency;

      1.Building Envelope
      2.HVAC
      3.Service Water Heating (DHW)

There are 3 compliance paths

1. Prescriptive - with and without heat recovery
2. Simple trade off (only within the building envelope)
3. Performance - Energy model required

NOTE: The code uses Effective Insulation levels – NOT Nominal levels – I.E. a 2X6 wall with studs at 16” on center with nominal R-20 batts, has an effective value of approximately R-15.5.

PRECRIPTIVE
SIMPLE TRADE OFF
PERFORMANCE
​No Energy Model Required
Insulation Calculations required on Blueprints
Follow the prescriptive Requirements - with heat recovery or without heat Recovery

Example - Climate Zone – 7A 5000-5999 Degree Days 
Calgary, Red Deer, Edmonton



                                                       NO HRV                         With HRV
Attic Insulation                             R- 60                             R- 50
Wall & Rim Insulation                  R-24 Batt                      R-22 Batt          
Foundation Insulation                 R-24 Batt                      R-22 Batt
Cantilevers                                   R- 28.5                          R- 28.5
Heated Bsmt Floor                         R-16.13                          R-16.13
Windows Overall Average             U-1.60 or  25 Energy Rating
HRV                                                N/A                        60%  efficiency
Furnace                                                        92% AFUE                   
 A/C                                                              14.5  SEER                   
Boilers                                                          90% AFUE                                    
DHW – Natural Gas Tank                              67% EF
DHW – Natural Gas Tankless                        80% EF

Air Tightness                                               2.5 or 3.2
if prescriptive air tightness requirements are followed


Example
You can decrease insulation in attic by increasing insulation in walls. 

Trade only within Building Envelope
Nominal Values are shown, however ssection 9.36 uses EFFECTIVE Values which must be calculated.
Simplified List - See 2014 ABC section 9.36 for details
See 2014 ABC Part 9.36 for details or contact us for consultation.

We have a full team to perform energy compliance reports for permit.
OPTION 1
OPTION 2
​No Energy Model Required
Insulation Calculations required on Blueprints
Follow the prescriptive Requirements - with heat recovery or without heat Recovery


As above, but trade wall insulation, attic insulation foundation insulation or windows 

Build an energy model of the house you plan to build called the PROPOSED house. 

By adding heat recovery (HRV) you will likely achieve compliance without adding any other items as long as you follow the prescriptive requirements for achieving the 2.5 ACH.  

You can model for lower ACH numbers, but anything lower than 2.5 will require an on-site air test (following prescriptive air tightness allows you to forgo the on-site air tightness testing)

FOR MOST NEW HOMES - ADD HEAT RECOVERY AND YOU WILL COMPLY (Energy model required)
OPTION 3
Energy Model required
Prescriptive air tightness 2.5 (no on site test required)**
R-20 walls and rim, 
R-40 attic, 
R-28 Cantilevers, 
R-12 frost walls
R-10 underslab when in-floor heat
Dual, Low E, argon Windows
95% AFUE furnace
67% EF DHW tank
HRV

**A house can be modeled to a lower ACH, which will reduce energy usage, but an on site blower door test must be used to achieve compliance. Using a prescriptive 2.5 ACH will allow you to forgo the on site blower door test 

The above represents an example ONLY - Each house must be energy modeled and compared to a prescriptive REFERENCE house to determine compliance 


Use the PROPOSED house to build the REFERENCE house.

The REFERENCE house uses the insulation values from the non-HRV tables. It also places equal amount of windows on 4 sides at between 17% and 22% window to wall ratio (FDWR). The REFERENCE house does not have heat recovery.

WINDOWS - Most new homes have between 8%-12% windows to wall ratio or FDWR ( Fenestration Door Wall  Ratio). If you have less than 17% windows in the PROPOSED house, you will have to add windows to the REFERENCE house to bring it up to a 17% minimum, divided equally on 4 sides. If you have more than 22% windows in the PROPOSED house, you can only model the REFERENCE house with a 22% maximum FDWR. Anything between 17%-22% will use the actual FDWR number.

The total energy consumption of this REFERENCE house is the baseline energy consumption.

If the PROPOSED house is equal to or lower than the REFERENCE (baseline) house, then  you comply with the code.  

​Qualistat Building Performance Consultants offer  performance compliance energy modeling for new homes. 

Most average new homes are approximately  $400 + GST

Contact us for more details
CONDENSED Section 9.36 PDF
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