LochSpec Pro-Size
Applications
Payback Calculator
Product Documents
Apartment Building Sizing
Complete the equipment settings and application sizing fields to have LochSpec Pro-Size calculate the estimated hot water loads. When ready click the "Continue" button to view the recommended Lochinvar heaters for your project.
Step 2 of 4
Specify System and Loads
US/IP
SI/Metric
System Settings
Equipment
Circulating Water Heaters with external storage tank
Water Heaters Only (no external storage)
Heat Pump Heaters
Fuel Type
Natural Gas
Liquid Propane
Electric
Equipment Location
Indoor
Outdoor
LowNox
Ultra LowNox
ASME Approved
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
Building Use
Low Peak Demand
Medium Peak Demand
High Peak Demand
More Info
Project Information
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
[Customize
]
Not greater than 0
Unit Application Loads
Shower Head Flowrate
usgpm
Not greater than 0
Units with 1-Bath
Quantity
Not greater than 0
Persons Per
Not greater than 0
Clothes Washer
Units with 1-1/2 Baths
Quantity
Not greater than 0
Persons Per
Not greater than 0
Clothes Washer
Units with 2 Baths
Quantity
Not greater than 0
Persons Per
Not greater than 0
Clothes Washer
Units with 2-1/2 Baths
Quantity
Not greater than 0
Persons Per
Not greater than 0
Clothes Washer
Include Laundry Services
Laundry Model 1
Quantity
Not greater than 0
Capacity
lb
Not greater than 0
Laundry Model 2
Quantity
Not greater than 0
Capacity
lb
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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