ENERGY CALCULATIONSPrescriptive Energy Code Compliance for All Climate Zones in Washington
Project Information Contact Information
KENTNER RESIDENCE H21) ARCHITECTURE + DESIGN
806 CARY RD 23020 EDMONDS WAY #113
EDMONDS, WA 98020 EDMONDS, WA 98020
This project will use the requirements of the Prescriptive Path below and incorporate the
the minimum values listed. In addition, based on the size of the structure, the appropriate
number of additional credits are checked as chosen by the permit applicant.
Authorized Representative
Aff Climate Zones
R Value
U-Factor
Fenestration U-Facto
n/a
0.30
Skylight U-Factor
n/a
0.50
Glazed Fenestration SHGC
n/a
n/a
Ceiling
49
0.026
Wood Frame Wall""
21 int
0.056
Mass Wall R-Value
21/21
0.056
Floor
309
0.029
Below Grade Wall`"'
10/15/21 int + TB
0.042
Slab R-Value & Depth
10, 2 ft
n/a
"Table R402.1.1 and Table R402.1.3 Footnotes included on Page 2.
Date
RECEIVED
MAR 0 5 2020
BUILDING
COPY
Each dwelling unit in a residential building shall comply with sufficient options from Table R406.2 so as to achieve
the following minimum number of credits:
1. Small Dwelling Unit: 1.5 credits
❑ Dwelling units less than 1500 square feet in conditioned floor area with less than 300 square feet of
fenestration area. Additions to existing building that are greater than 500 square feet of heated floor area but
less than 1500 square feet.
❑✓ 2. Medium Dwelling Unit: 3.5 credits
All dwelling units that are not included in #1 or #3. Exception: Dwelling units serving R-2 occupancies shall
require 2.5 credits.
❑3. Large Dwelling Unit: 4.5 credits
Dwelling units exceeding 5000 square feet of conditioned floor area.
❑ 4. Additions less than 500 square feet: .5 credits
Table R406.2 Summary
Option Description
Credit(s)
la
Efficient Building Envelope 1 a
0.5
1b
Efficient Building Envelope 1b
1.0
1c
Efficient Building Envelope 1c
2.0
ld
Efficient Building Envelope 1d
0.5
2a
Air Leakage Control and Efficient Ventilation 2a
0.5
2b
Air Leakage Control and Efficient Ventilation 2b
1.0
2c
Air Leakage Control and Efficient Ventilation 2c
1.5
3a
High Efficiency HVAC 3a
1.0
3b
High Efficiency HVAC 3b
1.0
3c
High Efficiency HVAC 3c
1.5
3d
High Efficiency HVAC 3d
1.0
4
High Efficiency HVAC Distribution System
1.0
5a
Efficient Water Heating 5a
0.5
5b
Efficient Water Heating 5b
1.0
5c
Efficient Water Heating 5c
1.5
5d
Efficient Water Heating 5d
0.5
6
Renewable Electric Energy
0.5
Total Credits
*Please refer to Table R406.2 for complete option descriptions
❑�
0.5
11
1.0
0.5
El
0
1.5
-----] *1200 kwh
0.0
3.50
is LD cow ao-ft79
Table R402.1.1 Footnotes
For Sk 1 foot .= 304.8 mm, ci .= continuous insulation, int .= intermediate framing.
a R-values are minimums. U-factors and SHGC are maximums. When insulation is installed in a cavity which is
less than the label or design thickness of the insulation, the compressed R-value of the insulation from
Appendix Table A101.4 shall not be less than the R-value specified in the table.
b The fenestration U-factor column excludes skylights. The SHGC column applies to all glazed fenestration.
"10/15/21.+TB" means R-10 continuous insulation on the exterior of the wall, or R-15 on the continuous
insulation on the interior of the wall, or R-21 cavity insulation plus a thermal break between the slab and the
basement wall at the interior of the basement wall. "10/15/21.+TB" shall be permitted to be met with R-13
cavity insulation on the interior of the basement wall plus R-5 continuous insulation on the interior or exterior
of the wall. "10/13" means R-10 continuous insulation on the interior or exterior of the home or R-13 cavity
insulation at the interior of the basement wall. "TB" means thermal break between floor slab and basement
wall.
d R-10 continuous insulation is required under heated slab on grade floors. See R402.2.9.1.
e There are no SHGC requirements in the Marine Zone.
f Reserved.
g Reserved.
" Reserved.
The second R-value applies when more than half the insulation is on the interior of the mass wall.
' Reserved.
k For single rafter- or joist -vaulted ceilings, the insulation may be reduced to R-38.
Reserved.
m Int. (intermediate framing) denotes standard framing 16 inches on center with headers insulated with a
minimum of R-10 insulation.
Table R402.1.3 Footnote
a Nonfenestration U-factors shall be obtained from measurement, calculation or an approved source or as
specified in Section R402.1.3.
Simple Heating System Size: Washington State
This heating, system sizing calculator is based on the Prescriptive Requirements of the 2015 Washing on State Energy Code (WSEC) and ACC_A_
Manuals J and S. This calculator will calculate heating loads only- ACCA procedures for sizing cooling s stems should be used to determine cooling
loads.
Please fill out all of the green drop -downs and boxes that are applicable to your project. As you make selections in the drop -downs for each section,
some values will be calculated for you. If you do not see the selection you need in the drop -down options, please call the WSU Energy Extension
Program at (360) 956-2042 for assistance.
Project Information Contact Information
,KENTNER RESIDENCE H2D ARCHITECTURE a DESIGN
,806 CARY RD 23020 EDMONDS WAY #113
EDMONDS, WA 98020 EDMONDS, WA 98020
Heating System Type_ 0AYCidwSystems ®Heat Purry
To see detailed instructions for each section, piece your cursor on the word 'Instructions"
Desi n Ternperature
Instructions Design Temperature Difference (AT) 46
5eano rx ;n + eT=rndoar 70 p RECEIVED
( degrees] -Qutdoorpostri Tem r
Area of Building
Conditioned Floor Area
Instructions Conditioned Floor Area (sq ft)
Average Ceiling Height
Instructions Average Ceiling Height (ft)
Glazing and igoo_ Ts
Instructions
n 0. 'In
Skylights
Instructions
Insulation
Attic
Instructions i -
R.n�,
Single Rafter or Joist Vaulted Ceilings
Instructions No Vaulted Ceilings in this project.
Above Grade Walls isee Flue 11
Instructions f
i R-21 Intermediate
Floors
Instructions
R-38
Below Grade Walls rsee F1aue it
Instructions R-21Interior
Slab Below Grade flee Fluure 1.)
Instructions No SW Beira C:dd1 ,i,;hk�. li��;,•ct.
Slab on Grade (see pluere it
Instrurtions � R_10 Fully Insulated
Location of Duct
Instructions
ikwondawmd Space
Figure 1.
•1Yi0w�Pd+d�
3.623 1 MAR 0 5 2020
Conditioned Volume BUILDING
$.0 28,985
U-Factor X Area = UA
+ 0.280 855 239.48
U-Factor X Area = UA co
0.50 00 cyry
U-Factor X Area - UA
0 026 1,990 51,74
U-Factor X Area UA
U-Factor X Area UA
0,056 3, 3t36 188.51
U-Factor X Area UA
T i 0.025 948 23.70
j U-Factor X Area UA
0.042 505 21.21
F-Factor X Length UA
0.303 L 0
F-Factor X Len th UA
0.360 134 48.24
Duct Leakage Coefficient
•
1.10
Sum of UA
572.88
Envelope Heat Load
26,352
Btu / Hour
Sum of UA X AT
Air Leakage Heat Load
14,400
Btu / Hour
Volume X 0.6 X AT X 018
Building Design Heat Load
40,752
Btu / Hour
Air Leakage + Envelope Heat Loss
Building and Duct Heat Load
44,827
Btu / Hour
Ducts in unconditioned space: Sum of Building Heat Loss X 1 10
Ducts in conditioned space: Sum of Building Heat Loss X 1
Maximum Heat Equipment Output
56,034
Btu / Hour
Building and Duct Heat Loss X 140 for Forced Air Furnace
Building and Duct Hear Loss X 125 for Heat Pump
(07/01/13)