Air Source Heat Pump to Air Source Heat Pump Criteria

Equipment Qualification

• Heat pump meets one of the following as determined by AHRI Standard 210/240:
  • 8.2 HSPF
  • 8.5 or higher HSPF
  • AHRI-rated/matching condensing unit and evaporator coil installed (split systems only) and listed in the AHRI Certified Directory of Unitary Equipment found at www.ahridirectory.org.
  • Heat pump is 5 tons or less.
  • Heat pump is sized using Manual J or equivalent and selected coil combination has capacity that is within ½ ton of the calculated dominant design load (heating or cooling).
  • Heat pump replaces an existing heat pump.

Installation Qualification

• Visually inspect ductwork; verify there are no disconnected ducts. Repair disconnect(s) before installing equipment.
• Confirm system airflow is at least 325 CFM/Ton as measured with TrueFlow® Meter.
• Confirm refrigerant charge is within 3° of target subcooling when checked in either cooling or heating mode (latter only applies if outdoor unit has TXV). For winter installations (outdoor temperature below 65º F), Installer also has option of comparing suction and discharge pressures with manufacturer targets.

Heat Pump Controls Setup/Checkout

• Auxiliary heat can never operate on Stage 1 heating call.
• Compressor low-ambient lockout is set no higher than 0°F.
• If outdoor sensor is used to control auxiliary heat, sensor output (omhs) is checked and compared to expected value.

Single Stage Compressor Systems

• Confirm discharge air temperature sensor is not installed or is disabled.
• Confirm auxiliary heat cannot operate at outside air temperatures above 35°F.

Multi-Stage Compressor Systems

• If discharge air temperature sensor can control auxiliary heat, confirm staging temp. is set no higher than 85°F, OR
• If staging temperature is set above 85°F, confirm resistance heat cannot operate at outside temperature above 35°F.

Note: If the air-source heat pump is sized to Program standards, heating rate of recovery and comfort will be sufficient. Note that strip heat can be used to supplement the compressor when outdoor temperatures are below 35°F.

Submit the following to Idaho Power

To avoid a delay in processing, ensure forms and worksheets are completed in full.

• Air Source Heat Pump Incentive Application
• Air Source Heat Pump Installation Worksheet
• Certificate of AHRI-Certified Performance for heat pump (or AHRI number)
• Manual J or equivalent (such as the Idaho Power Heat Pump Sizing Worksheet)
• Copy of proof of payment and a copy of itemized receipt/invoice

 

Electric Heat System to Air Source Heat Pump Criteria

Equipment Qualification

• Heat pump meets one of the following as determined by AHRI Standard 210/240:
  • 8.2 HSPF
  • 8.5 or higher HSPF
• AHRI-rated/matching condensing unit and evaporator coil installed (split systems only) and listed in the AHRI Certified Directory of Unitary Equipment found at www.ahridirectory.org.
• Heat pump is 5 tons or less
• Heat pump is sized using Manual J or equivalent and selected coil combination has capacity that is within ½ ton of the calculated dominant design load (heating or cooling).
• Heat pump replaces an existing electric heating system (i.e. furnace, baseboards, etc.) with a heat pump with electric backup.

Installation Qualification

• Visually inspect ductwork; verify there are no disconnected ducts. Repair disconnect(s) before installing equipment.
• Confirm system airflow is at least 325 CFM/Ton as measured with TrueFlow® Meter.
• Confirm refrigerant charge is within 3° of target subcooling when checked in either cooling or heating mode (latter only applies if outdoor unit has TXV). For winter installations (outdoor temperature below 65º F), Installer also has option of comparing suction and discharge pressures with manufacturer targets. (See Note at the end of this Section (4) or Appendix A for more details.)

Heat Pump Controls Setup/Checkout

• Auxiliary heat can never operate on Stage 1 heating call.
• Compressor low-ambient lockout is set no higher than 0°F.
• If outdoor sensor is used to control auxiliary heat, sensor output (ohms) is checked and compared to expected value.

Single Stage Compressor Systems

• Confirm discharge air temperature sensor is not installed or disabled.
• Confirm auxiliary heat cannot operate at air temperatures above 35°F.

Multi-Stage Compressor Systems

• If discharge air temperature sensor can control auxiliary heat, confirm staging temp. is set no higher than 85°F, OR
• If staging temperature is above set above 85°F, confirm resistance heat cannot operate at outside temperature above 35°F.

Note: If the air-source heat pump is sized to Program standards, heating rate of recovery and comfort will be sufficient. Note that strip heat can be used to supplement the compressor when outdoor temperatures are below 35°F.

Submit the following to Idaho Power

To avoid a delay in processing, ensure forms and worksheets are completed in full.

• Air Source Heat Pump Incentive Application
• Air Source Heat Pump Installation Worksheet
• Certificate of AHRI-Certified Performance for heat pump (or AHRI number)
• Manual J or equivalent (such as the Idaho Power Heat Pump Sizing Worksheet)
• Copy of proof of payment and a copy of itemized receipt/invoice

   

Oil or Propane Heating System to Air Source Heat Pump Criteria

Equipment Qualification

• Heat pump meets one of the following as determined by AHRI Standard 210/240:
  • 8.2 HSPF
  • 8.5 or higher HSPF
• AHRI-rated/matching condensing unit and evaporator coil installed (split systems only) and listed in the AHRI Certified Directory of Unitary Equipment found at www.ahridirectory.org.
• Heat pump is 5 tons or less
• Heat pump is sized using Manual J or equivalent and selected coil combination has capacity that is within ½ ton of the calculated dominant design load (heating or cooling).

Installation Qualification

• Visually inspect ductwork; verify there are no disconnected ducts. Repair disconnect(s) before installing equipment.
• Confirm system airflow is at least 325 CFM/Ton as measured with TrueFlow® Meter.
• Confirm refrigerant charge is within 3° of target subcooling when checked in either cooling or heating mode (latter only applies if outdoor unit has TXV). For winter installations (outdoor temperature below 65º F), Installer also has option of comparing suction and discharge pressures with manufacturer targets. (See Note at the end of this Section (4) or Appendix A for more details.)
• Home must be located in an area where natural gas is not available.

Heat Pump Controls Setup/Checkout

• Auxiliary heat can never operate on Stage 1 heating call.
• Compressor low-ambient lockout is set no higher than 0°F.
• If outdoor sensor is used to control auxiliary heat, sensor output (ohms) is checked and compared to expected value.

Single Stage Compressor Systems

• Confirmed  discharge air temperature sensor is not installed or disabled
• Confirmed auxiliary heat cannot operate at air temperatures above 35°F.

Multi-Stage Compressor Systems

• If discharge air temperature sensor can control auxiliary heat, confirm staging temp. is set no higher than 85°F, OR
• If staging temperature is above set above 85°F, confirm resistance heat cannot operate at outside
  temperature above 35°F.

Note: If the air-source heat pump is sized to Program standards, heating rate of recovery and comfort will be sufficient. Note that strip heat can be used to supplement the compressor when outdoor temperatures are below 35°F.

Submit the following to Idaho Power

To avoid a delay in processing, ensure forms and worksheets are completed in full.

• Air Source Heat Pump Incentive Application
• Air Source Heat Pump Installation Worksheet
• Certificate of AHRI-Certified Performance for heat pump (or AHRI number)
• Manual J or equivalent (such as the Idaho Power Heat Pump Sizing Worksheet)
• Copy of proof of payment and a copy of itemized receipt/invoice

 

New Construction Air Source Heat Pump Criteria

Equipment Qualification

• Heat pump meets one of the following as determined by AHRI Standard 210/240:
  • 8.2 HSPF
  • 8.5 or higher HSPF
• AHRI-rated/matching condensing unit and evaporator coil installed (split systems only) and listed in the AHRI Certified Directory of Unitary Equipment found at www.ahridirectory.org.
• Heat pump is 5 tons or less
• Heat pump is sized using Manual J or equivalent and selected coil combination has capacity that is within ½ ton of the calculated dominant design load (heating or cooling).
• Home is constructed in an area where natural gas is not available.
• Construction must be completed and certificate of occupancy issued prior to submitting incentive paperwork.

Installation Qualification

• Visually inspect ductwork; verify there are no disconnected ducts. Repair disconnect(s) before installing equipment.
• Confirm system airflow is at least 325 CFM/Ton as measured with TrueFlow® Meter.
• Confirm refrigerant charge is within 3° of target subcooling when checked in either cooling or heating mode (latter only applies if outdoor unit has TXV). For winter installations (outdoor temperature below 65º F), Installer also has option of comparing suction and discharge pressures with manufacturer targets. (See Note at the end of this Section (4) or Appendix A for more details.)
• Home must be located in an area where natural gas is not available.

Heat Pump Controls Setup/Checkout

• Auxiliary heat can never operate on Stage 1 heating call.
• Compressor low-ambient lockout is set no higher than 0°F.
• If outdoor sensor is used to control auxiliary heat, sensor output (ohms) is checked and compared to expected value.

Single Stage Compressor Systems

• Confirmed  discharge air temperature sensor is not installed or disabled
• Confirmed auxiliary heat cannot operate at air temperatures above 35°F

Multi-Stage Compressor Systems

• If discharge air temperature sensor can control auxiliary heat, confirm staging temp. is set no higher than 85°F, OR
• If staging temperature is above set above 85°F, confirm resistance heat cannot operate at outside temperature above 35°F.

Note: If the air-source heat pump is sized to Program standards, heating rate of recovery and comfort will be sufficient. Note that strip heat can be used to supplement the compressor when outdoor temperatures are below 35°F.

Submit the following to Idaho Power

To avoid a delay in processing, ensure forms and worksheets are completed in full.

• Air Source Heat Pump Incentive Application
• Air Source Heat Pump Installation Worksheet
• Certificate of AHRI-Certified Performance for heat pump (or AHRI number)
• Manual J or equivalent (such as the Idaho Power Heat Pump Sizing Worksheet)
• Copy of proof of payment and a copy of itemized receipt/invoice

Note: Winter Installation Criteria If an air-source heat pump is installed in the winter (outdoor temperature below 65°F), the installer can confirm accuracy of charge by comparing operating suction and discharge pressures with manufacturer’s target values (which are typically listed vs. outdoor temperature). Line set adjustments must be made before checking charge. Manufacturers typically allow a 5 or 10 psig tolerance band around the target operating pressures.