Technical information

69°
BEDROOM
69°
BATHROOM
69°
BEDROOM
69°
BATHROOM
69°
BEDROOM
69°
LIVING ROOM
69°
KITCHEN
69°
BATHROOM
69°
DEN
69°
UTILITY
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60°
BEDROOM
60°
BATHROOM
60°
BEDROOM
60°
BATHROOM
60°
BEDROOM
60°
LIVING ROOM
60°
KITCHEN
60°
BATHROOM
60°
DEN
60°
UTILITY

60°
BEDROOM
60°
BATHROOM
60°
BEDROOM
60°
BATHROOM
60°
BEDROOM
69°
LIVING ROOM
69°
KITCHEN
60°
BATHROOM
69°
DEN
60°
UTILITY

60°
BEDROOM
60°
BATHROOM
60°
BEDROOM
60°
BATHROOM
60°
BEDROOM
55°
LIVING ROOM
55°
KITCHEN
55°
BATHROOM
55°
DEN
55°
UTILITY
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Heating System Comparisons
New Construction
Zonal Electric Heat saves costs during construction, and saves energy for the life of the home.
Notes:
•
1 Therm = 100,000 BTUs
•
1 KWH = 3,412 BTUs
*Duct Loss = 20%
*Stack Loss = 20% for 80% Efficient furnace, 10% for 90% Efficient furnace
*Furnace Electricity Usage = Blower and Inducer
Comparison Assumptions
•
1800 Square Foot Home
•
3 Bedrooms, 2.5 baths
•
Heating Zones: 10
•
Electronic Thermostats
•
Location: Portland, OR
•
Winter: Oct 1 - Mar 1
•
Comfort temp:
Day=69° (16 hours)
Sleep=60° (8 hours)
Installation cost
No. of rooms typically
heated at one time
Average heat required
Add furnace duct* loss
Add furnace stack* loss
Add* furnace electricity usage
(converted from KW/HR to BTU/HR)
Total average energy required
TOTAL WINTER BTU USAGE
Central Gas Furnace
Electric Zonal Heat
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CENTRAL GAS FURNACE
80% Efficient 90% Efficient
$4800 - $5200
DAY
10 rooms heated to 69˚
NIGHT
10 rooms heated to 60˚
12,000 BTU/HR 12,000 BTU/HR
+3,000 BTU/HR +3,000 BTU/HR
+3,750 BTU/HR +1,667 BTU/HR
+637 BTU/HR +567 BTU/HR
19,387 BTU/HR 17,234 BTU/HR
70.3 Million 62.5 Million
ELECTRIC ZONAL HEAT
100% Efficient
$900 - $1200
DAY
3 rooms heated to 69˚
7 rooms heated to 60˚
NIGHT
5 rooms heated to 60˚
5 rooms heated to 55˚
10,000
BTU/HR
0
0
0
10,000
BTU/HR
36.2 Million
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