Pro-Size Water Heater Sizing
A. O. Smith Home
A. O. Smith Corporate
~BRANDNAME~
Apartment Building 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.
Switch to SI/Metric units...
System Settings
Equipment:
Water Heaters Only (no external storage)
Water Heaters with external storage if required
Commercial Tankless Heaters (no storage)
Boilers with external storage tank
Fuel Type:
Natural Gas
Liquid Propane
Electric
Oil
Dual Fuel (Oil / Gas)
Heat Pump / Electric
Equipment Location:
Indoor
Outdoor
Other Requirements:
Low NOx
Ultra Low NOx
ASME Approved
- Requirements of < 40 ng/J or 55 PPM
- Requirements of < 14 ng/J or 20 PPM
Display CDN Products:
# 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
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
Capacity:
USG
Minimum Existing Volume
The minimum existing storage value for A. O. Smith projects is 80 USG. The value has been adjusted
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Application Data
Temperatures
Cold Water Temp:
°F
Stored Water Temp:
°F
Load Profile
Building Use:
Low Peak Demand
Medium Peak Demand
High Peak Demand
More Info...
Building Use
Peak Demand Period (hours)
Description
Low Peak Demand
3.0
High percentage of children; low income; public assistance; no/few occupants working; families; single parent households, complexes with high percent of retired occupants.
Medium Peak Demand
2.0
Moderately priced/older apartments with mixed clientele some: Families, singles, public assistance, single-parent households, and retired couples and singles.
High Peak Demand
1.0
White Collar, midrange to high-end apartments W/high percentage of dual income families and couples where both work. Apartments close to universities w/high percent of students. (Could also be low-income housing with high percentage of more than one family per unit.)
Peak Demand Period:
Hours
(Custom?
)
Unit Application Loads
Shower Head Flowrate:
usgpm
Units with 1 Bath:
Persons per unit:
w/ Clothes Washer
Units with 1-1/2 Baths:
Persons per unit:
w/ Clothes Washer
Units with 2 Baths:
Persons per unit:
w/ Clothes Washer
Units with 2-1/2 Baths:
Persons per unit:
w/ Clothes Washer
Laundry Room or Coin-Op Laundry
Include Coin-Operated Laundry
Model 1 - Quantity:
Capacity:
lb
Model 2 - Quantity:
Capacity:
lb
Additional Load and Intentional Oversize
Additional Load:
usgph
(@ stored temp)
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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