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User-Supplied Demand Sizing
Complete the equipment settings and application sizing fields to have Pro-Size calculate the estimated hot water loads. When ready click the "Continue" button to view the recommended A. O. Smith heaters for your project.
US/IP
SI/Metric
System Settings
Equipment
Water Heaters Only (no external storage)
Water Heaters with external storage if required
Commercial Tankless Heaters (no storage)
Commercial Tankless Heaters + Storage Tanks
Heat Pump Heaters
Boilers with external storage tank
Fuel Type
Natural Gas
Liquid Propane
Electric
Equipment Location
Indoor
Outdoor
LowNox
Ultra LowNox
ASME Approved
Recommend Canadian Products
Number of Heaters
Not Specified (Auto)
1
2
3
4
5
6
Altitude
Less than 2000 ft
2000 ft to 3000 ft
3000 ft to 4000 ft
4000 ft to 5000 ft
5000 ft to 6000 ft
6000 ft to 7000 ft
7000 ft to 8000 ft
8000 ft to 9000 ft
9000 ft to 10000 ft
10000 ft to 11000 ft
11000 ft to 12000 ft
Electricity Cost
$ Per KWH
Not greater than 0
Heat Pump Location
Indoor
Outdoor
Tank Location
Indoor
Outdoor
ASME Required
No
Yes
System Configuration
Multi-Pass
Single-Pass
(If Split System HPWH)
Heat Pump Load %
%
Not greater than 0
Storage Settings
Approx. Capacity
25%
30%
40%
50%
60%
70%
80%
90%
100%
125%
150%
200%
of first hour load
# of Storage Tanks
Not Specified (Auto)
1
2
3
4
New Tank Capacity
Not Specified (Auto)
50
80
100
119
120
125
140
175
200
250
300
325
350
375
400
450
500
550
600
650
700
750
800
900
1000
1250
1500
1750
1800
2000
2250
2500
3000
3500
4000
4500
5000
6000
7500
8000
10000
12500
USG Each
Existing Storage
No
Yes
Existing Storage Capacity
USG
Not greater than 0
Minimum Existing Volume
The minimum existing storage value for A. O. Smith projects is 80 USG. The value has been adjusted.
Storage Settings
Max Storage Volume:
USG
Not greater than 0
Application Data
Temperatures
Min Heat Pump Ambient Air Temp
[Lookup?
]
Not greater than 0
Zip Code
Get Air Temperature...
Cold Water Temperature
°F
Not greater than 0
Stored Water Temperature
°F
Not greater than 0
Load Profile
Total Demand
USGPH
Not greater than 0
Additional Load and Intentional Oversize
Additional Load
usgph
Not greater than 0
Design Oversize
0%
10%
20%
30%
40%
50%
60%
70%
80%
90%
100%
Load Summary
Peak Demand
0 USGPH
Temperature Rise
100 °F
Volume Per Peak
0 USG
Minimum Usable Storage
0 USG
180 °F Demand
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