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Heat Pump HSPF and SEER Tradeoff and Deemed Savings Calculator
The purpose of this calculator is to permit the user to determine alternative combinations of air source he
pump heating and cooling system efficiencies that produce equivalent annual savings to a system with a
minimum HSFP 8.0 and SEER 13 for site built homes and HSPF 8.0 and SEER 12 for manufactured ("H
Code") homes. The user is required to supply the heating and cooling climate zone where the system will
installed, the building type in which it will be installed and the proposed units ARI certified HSPF and SEE
user must also indicate whether the duct system has been or will be sealed to PTCS or equivalent standa
This calculator may also be used to determine the Conservation and Renewable Resources Rate Credit f
source heat pumps that do not qualify as "deemed" savings, but which are considered to produce savings
beyond current codes and practices. INPUT DESCRIPTION
Enter Building Type Post-1992 Single Family Construction Non-Super Good
Enter Cooling Zone Zone 2 - 300 -
Enter Heating Zone Zone 3 - Grea
Is or will the heat pump's duct system be PTCS (or equivalent) certified?
Proposed Case System Efficiency
Enter Heat Pump HSPF (Minimum = 7.2)
Enter Heat Pump Cooling SEER (Minimum = 10)
Enter Existing Building's Heating System Type Air Source Heat Pump
Reference Case Performance
Post-1992 Single Family Construction
Reference Case Heating and Cooling Loads
Space Heating Load (kWh/yr)
Space Cooling Load (kWh/yr)
Reference Case System Efficiency
Heating (HSPF)
Cooling (SEER)
Reference Case Duct System Efficiency - Heating
Reference Case Duct System Efficiency - Cooling
Reference Case Annual Energy Use
Space Heating Use (kWh/yr)
Space Cooling Use (kWh/yr)
Total Annual Space Conditioning Use (kWh/yr)
Proposed Case Performance
Post-1992 Single Family Construction
Proposed Case Annual Energy Use
Space Heating Use (kWh/yr)
Space Cooling Use (kWh/yr)
Total Annual Space Conditioning Use (kWh/yr)
Tradeoff Accepted to Qualify As "Deemed"?
Conservation and Renewable Resource Rate Credit Calculation
Reference Case Annual Savings
Space Heating Savings (kWh/yr)
Space Cooling Savings (kWh/yr)
Total Space Conditioning Savings
Reference Case Conservation and Renewable Discount Rate Credit
Proposed Case Annual Savings
Space Heating Savings (kWh/yr)
Space Heating Savings Adjusted for Non-Equivalent HSPF Tradeoff (kWh/yr)
Space Cooling Savings (kWh/yr)
Space Cooing Savings Adjusted for Non-Equivalent SEER Tradeoff (kWh/yr)
Total Annual Space Conditioning Savings (kWh/yr)
Proposed Case Conservation and Renewable Discount Rate Credit
Calculator
tions of air source heat
gs to a system with a
or manufactured ("HUD
where the system will be
rtified HSPF and SEER. The
S or equivalent standards.
sources Rate Credit for air
ed to produce savings `
VALUE
ly Construction Non-Super Good Cents
Zone 2 - 300 - 600 CDD
Zone 3 - Greater than 7500 HDD
No
8
12
at Pump
16,594
2,726
8.0
13.0
86%
82%
9,606
922
10,528
9,606
999
10,605
No
n
1,067 8,521 (7,454)
168
1,235
$ 402
1,067
1,067
91
45
1,113
$ 351
U V W X Y Z AA AB AC AD AE AF AG AH AI AJ AK AL
1 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37
2 Base Case HP COP Base Case CAC COP Reference Case w/oPTCS Reference Case w/oPTCS Reference Case w/PTCS Reference Case w/PTCS
3 Heat Pump CAC Heat Pump COP CAC COP Heat Pump COP CAC COP
4 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3
5 2.0 2.0 1.8 3.1 3.1 3.1 2.2 2.2 2.0 3.3 3.3 3.3 2.3 2.3 2.1 3.5 3.5 3.5
6 2.0 2.0 1.8 3.1 3.1 3.1 2.2 2.2 2.0 3.3 3.3 3.3 2.3 2.3 2.1 3.5 3.5 3.5
7 2.0 2.0 1.8 3.1 3.1 3.1 2.2 2.2 2.0 3.3 3.3 3.3 2.3 2.3 2.1 3.5 3.5 3.5
8 2.0 2.0 1.8 3.1 3.1 3.1 2.2 2.2 2.0 3.6 3.6 3.6 2.3 2.3 2.1 3.8 3.8 3.8
9 2.0 2.0 1.8 3.1 3.1 3.1 2.2 2.2 2.0 3.6 3.6 3.6 2.3 2.3 2.1 3.8 3.8 3.8
10 2.0 2.0 1.8 3.1 3.1 3.1 2.2 2.2 2.0 3.6 3.6 3.6 2.3 2.3 2.1 3.8 3.8 3.8