Energy Analysis



Rancher/Mr. & Mrs. K. W. Residence

DESIGN CONDITIONS:

   Conditioned Living Floor Area
   Exterior Wall Surface Above Grade
   Window Glazing Area
   Conditioned Interior Volume
   Fuel Source For Heat (Geothermal)
   Fuel Source for Air Conditioning
   Total Above Grade Wall R-Value
   Total Ceiling R- Value

 

4844 sq.ft.
4338 sq.ft.
880 sq.ft.
43,596cu.ft.
Electric
Electric
20.92
39.30

 

GEOGRAPHICAL  CONSIDERATIONS:

   County Jurisdiction within Maryland
   Climate Zone 4
   Radon Zone 1
   Average Deep Ground Temperature
   Latitude
   Annual Precipitation in inches
   Heating Design Temperature
   Cooling Design Temperature

 

Howard
 Mixed Humid
High Levels
55°F
39.100
40.8
13°F
91°F

   

ANNUAL ENERGY
CONSUMPTION-    91.5 Mbtu
(Per heating season @ 70°F indoor temp.)

ANTICIPATED
HEATING COST- $1126.36
(Per heating season @ $.147 per kwh)

Cost To Environment- 10,458 Lbs.
(CO2 Emissions Per Year)

 

 

     
BUILDING ENVELOPE:  
Energy Star
Recommendation
     

Attic

R-38 kraft faced fiberglass with eave baffles

R-38
     

Above Gnd. Exterior Walls

R-19 kraft faced fiberglass batts within 2 x 6 framing cavities
Vapor semi-permeable structural OSB exterior sheathing
Air and water infiltration barrier- all exterior walls & gables wrapped with vapor permeable  spun high density polyethylene fiber building wrap

 

R-13
     
Windows & Full Glass Doors

U.30/ SHGC .40 Pella Architect Series casement- dual glazed. Argon gas filled with metallic oxide low emissivity coating

 

≤U.40/≤SHGC.45
  20% glazed surfaces as a percent of conditioned living area ≤21%
     
Exterior Doors U.15 Thermatru fiberglass clad polyurethane foam core with tight seal weather stripping  
     
Basement Walls

R-13 kraft faced fiberglass insulation affixed within 2x4 perimeter wall cavities. Foundation ten inch thick continuous reinforced concrete wall. R-19 two by six rear exterior walls

 

R-13
     
Basement Slab

R-7.5 polystyrene foam board horizontally placed underneath entire basement slab. One half inch polystyrene capillary and expansion break entire perimeter

R-10 @2’horizontal
     
Envelope Air Infiltration

To be tested as specified by “Blower Door” testing and analysis

≤7ach50 pascels
     
Roof  Eave Overhang

2’-0”  overhang  for summer shading, winter solar gain, and  roof run off protection

1’-9” optimal
(window header height= 1’-1”)
 
Complete three page Home Energy Analysis available pre-construction to facilitate energy related systems selection.