HRAI Residential Heat Loss and Heat Gain Calculations Page 1 of BUILDING LOCATION Model. Company. BUILDING CONSTRUCTION DETAILS

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1 Name Address HRAI Residential Heat Loss and Heat Gain Calculations Page 1 of BUILDING LOCATION Model Address Site Lot City and Province Postal Code SUBMITTED FOR DESIGNED/SUBMITTED BY: Name Company Address City and Province Telephone FOR DESIGNER'S USE: Signature: Postal Code City and Province Postal Code Telephone Date Prepared (MM/DD/YY) HRAI # Other Certification # (e.g. BCIN) SECTION A Plan & Drawing No: Attachment: No. of Stories: Weather location: HRV Model Ventilated BUILDING CONSTRUCTION DETAILS Yes No N/A Front facing: Air tightness: Local Shielding: Internal Shading: Units: Building Envelope Assemblies Assumed Assumed Imperial Metric Yes Yes Occupants: No No Above Grade Walls Windows & Skylights Below Grade Walls Headers Ceilings Floors on Soil Doors Exposed Floors Forms Available From: HRAI, 2350 Matheson Blvd. East, Suite 101 Mississauga, Ontario L4W 5G9 ver. Jul / 2017

2 HRAI Residential Heat Loss and Heat Gain Calculations Page 2 of SECTION B DESIGN CONDITIONS HEAT LOSS HEAT Outdoor Design Temperature Heating(ODT) F / C Outdoor Design Temperature Cooling (ODT) F / C Indoor Design Temperature (IDT) F / C Indoor Design Temperature (IDT) F / C Mean Soil Temperature F / C North Latitude Summer Mean Daily Temperature Range F / C Building Volume (Vb) HRV Apparent Sensible Effectiveness = Ventilation System: SECTION C Level Room Name ft 3 / m 3 Building Conditioned Area ft² / m² (insert N/A if no HRV/ERV installed) Case #1: Exhaust Only System Case #2: Direct Ducted System Case #3: Central Forced Air System ROOM HEAT LOSS / HEAT SUMMARY Total Heat Loss Total Heat Gain Total Heat Loss Total Heat Gain Calculated Calculated Calculated Calculated Level Room Name Section 16 Section 17 Section 16 Section 17 SECTION D SUB TOTAL BUILDING HEAT LOSS SUMMARY Section 18 Section 21 Building Sub Total Heat Loss Central Forced Air Ventilation Heat Loss* Total Building Heat Loss (Section 18) (Section 19) (Section 20) *Only applicable for ventilation case #3 SECTION E BUILDING HEAT SUMMARY Building Sub Total Heat Gain (Section 21) Central Forced Air Ventilation Heat Gain* (Section 22) *Only applicable for ventilation case #3 Total Building Heat Gain (Section 23) Notes: Forms Available From: HRAI, 2350 Matheson Blvd. East, Suite 101 Mississauga, Ontario L4W 5G9 ver. Jul / 2017

3 COMPONENTS HRAI Residential Heat Loss and Heat Gain Calculations HL ΔT = HG ΔT = STRUCTURE EFFECTIVE R-VALUE Col 1 HL T (HG T+SC) P SC E R R H Col 2 Col 3 Col 4 A F Page 3 of Area LVL RM HEAT LOSS HEAT 1.GROSS EXPOSED WALLS 2.WINDOWS, GLASS DOORS AND SKYLIGHT 3.EXPOSED DOORS 4.NET EXPOSED WALLS 5.HEADER AREAS 6.EXPOSED CEILINGS 7.EXPOSED FLOORS 8.OTHER 9.FOUNDATION CONDUCTIVE HEAT LOSS 10. TOTAL CONDUCTIVE 11. AIR LEAKAGE TOTAL HEAT LOSS TOTAL HEAT HEAT LOSS MULTIPLIER HEAT MULTIPLIER BASEMENT SLAB ON GRADE LVL 1 LVL 2 LVL 3 LVL 4 12a. VENTILATION: HEAT LOSS MULTIPLIER EXHAUST ONLY HEAT MULTIPLIER 12b. VENTILATION: HEAT LOSS MULTIPLIER Qvr DIRECT DUCTED SYSTEM HEAT MULTIPLIER 13. INTERNAL HEAT (PEOPLE, LIGHTS, APPLIANCES, PLUG LOADS) 14. NET LOADS ADD SECTIONS ( ) 15. DUCT / PIPE HEAT LOSS/ THROUGH UNCONDITIONED SPACES LOSS 16. TOTAL HEAT LOSS FOR EACH ROOM ADD SECTIONS ( ) LOSS 17. TOTAL HEAT FOR EACH ROOM ADD SECTIONS ( ) SUB TOTAL HEAT LOSS (SUM OF SECTION 16) 20. TOTAL HEAT LOSS 19. CENTRAL FORCED AIR VENTILATION HEAT LOSS 21. SUB TOTAL HEAT (SUM OF SECTION 17) 22. CENTRAL FORCED AIR VENTILATION HEAT ADD SECTIONS ( ) 23. TOTAL HEAT ADD SECTIONS ( )

4 HRAI Residential Heat Loss and Heat Gain Calculations Page of COMPONENTS STRUCTURE P E LVL P E LVL P E LVL H RM H RM H RM A F HEAT HEAT A F HEAT HEAT A F HEAT Area LOSS Area LOSS Area LOSS HEAT 1.GROSS EXPOSED WALLS 2.WINDOWS, GLASS DOORS AND SKYLIGHT 3.EXPOSED DOORS 4.NET EXPOSED WALLS 5.HEADER AREAS 6.EXPOSED CEILINGS 7.EXPOSED FLOORS 8.OTHER 9.FOUNDATION HL 10. TOTAL CONDUCTIVE 11. AIR LEAKAGE 12a. VENTILATION: EXHAUST ONLY 12b. VENTILATION: Qvr Qvr Qvr DIRECT DUCTED SYSTEM 13. INTERNAL HEAT 14. NET LOADS 15. DUCT / PIPE HEAT LOSS LOSS LOSS LOSS / 16. TOTAL HL (ROOM) LOSS LOSS LOSS 17. TOTAL HG (ROOM)

5 HRAI Residential Heat Loss and Heat Gain Calculations Page of COMPONENTS STRUCTURE P E LVL P E LVL P E LVL H RM H RM H RM A F HEAT HEAT A F HEAT HEAT A F HEAT Area LOSS Area LOSS Area LOSS HEAT 1.GROSS EXPOSED WALLS 2.WINDOWS, GLASS DOORS AND SKYLIGHT 3.EXPOSED DOORS 4.NET EXPOSED WALLS 5.HEADER AREAS 6.EXPOSED CEILINGS 7.EXPOSED FLOORS 8.OTHER 9.FOUNDATION HL 10. TOTAL CONDUCTIVE 11. AIR LEAKAGE 12a. VENTILATION: EXHAUST ONLY 12b. VENTILATION: Qvr Qvr Qvr DIRECT DUCTED SYSTEM 13. INTERNAL HEAT 14. NET LOADS 15. DUCT / PIPE HEAT LOSS LOSS LOSS LOSS / 16. TOTAL HL (ROOM) LOSS LOSS LOSS 17. TOTAL HG (ROOM)

6 HRAI Residential Heat Loss and Heat Gain Calculations Formula Sheet (For Air Leakage / Ventilation Calculation) Page of BUILDING AIR LEAKAGE HEAT LOSS BUILDING AIR LEAKAGE HEAT B (M) = 0.33 B (M) = 0.33 HL leak = B x LR airh x Vb x HL T B (I) = HG leak = B x LR airc x Vb x HG T B (I) = = x x x = = x x x = AIR LEAKAGE HEAT LOSS/ MULTIPLIER TABLE (SECTION 11) Level Level Factor (LF) Building Air Leakage Heat Loss (HL leak ) Level Conductive Heat Loss: see Section 10 (HL clevel ) Air Leakage Heat Loss Multiplier (LF x HL leak HL clevel ) Air Leakage Heat Gain Multiplier = HG leak = Building Conductive Heat Gain = VENTILATION HEAT LOSS VENTILATION HEAT C (M) = 1.2 HL bvent = C x PVC x HL T x (1 - E) C (I) = 1.08 HG bvent = C x PVC x HG T C (M) = 1.2 C (I) = 1.08 = x x x = = x x = Case #1: Exhaust Only System (Section 12a) Case #1: Exhaust Only System (Section 12a) Multiplier = Level Factor x HL bvent Level Cond. Heat Loss Level LF HL bvent LVL Cond. HL Multiplier Multiplier = Multiplier = HG bvent Building Conductive Heat Gain = HG rvent = Multiplier x Room Conductive Heat Gain HL rvent = Multiplier x Room Conductive Heat Loss Case #2: Direct Ducted System (Section 12b) Case #2: Direct Ducted System (Section 12b) C (M) = 1.2 C (M) = 1.2 Multiplier = C x HL T x (1 - E) C (I) = 1.08 Multiplier = C x HG T C (I) = 1.08 Multiplier = x x = Multiplier = x = Q vr = Room Ventilation Rate HL rvent = Multiplier x Q vr Case #3: Central Forced Air System (Section 19) Q vr = Room Ventilation Rate HG rvent = Multiplier x Q vr Case #3: Central Forced Air System (Section 22) Enter HL bvent in Section 19 HG bvent x 1.3 = x 1.3 = (enter in Section 22)

7 HRAI WINDOW SHADING WORKSHEET Latitude = Page of Direction Window Faces W ( ft / m ) Width of Window H ( ft / m ) Height of Window A ( ft² / m² ) Total Window Area O ( ft / m ) Width of Overhang F (see Table below) F-Shade Factor S ( ft / m ) S = F x O Shade Line D ( ft / m ) Drop SA ( ft² / m² ) SA = (S-D) x W Shaded Area UA ( ft² / m² ) UA = A - SA Unshaded Area NOTES: Level Room Name Shaded area SA will be marked on the HRAI Worksheets as "north" Unshaded area (UA) will be marked on the HRAI Worksheets as the direction the window actually faces Shading calculations are not required for north, northeast and northwest facing windows. If the shaded area (SA) is greater than the window area (A), then: SA = A Shaded area (SA) is never more than window area (A) 5. If shaded area (SA) is negative use a value of zero.

8 TRANSPARENT ASSEMBLY HEAT MULTIPLIER () WORKSHEET Transparent Assembly Heat Gain Multiplier () Page of = HG T R + (SHGC SOLAR ISF) North Latitude HG T Effective R-value HG T #1 R North & Shaded Calculation Table Facing Direction South East / West Northeast / Northwest º ºF / C Southeast / Southwest Horizontal #2 SHGC #3 SOLAR #4 ISF #5 (#2) (#3) (#4) #6 =(#1) + (#5) Latitude to 82 SOLAR = Estimated Solar Radiation North & Northeast / Southeast / South East / West Shaded Northwest Southwest Horizontal Imperial Metric Imperial Metric Imperial Metric Imperial Metric Imperial Metric Imperial Metric Btu/h/ft² W/m² Btu/h/ft² W/m² Btu/h/ft² W/m² Btu/h/ft² W/m² Btu/h/ft² W/m² Btu/h/ft² W/m² ISF = Internal Shading Factors Type of interior shading Type of glazing systems Single Double Triple Heat Mirror No interior shades Interior blinds, curtains, and etc Interior reflective metallic blinds or screens