My wife and I are starting to review the proposed pool equipment from my PB. When it comes to heating, this is what I have come up with. What do you all think of this comparison:
Assumptions:
No pool cover so the pool will be cool in the morning. 78 degrees +/-?
We are on PG&E's E-6 Rate Schedule
https://www.pge.com/tariffs/tm2/pdf/ELEC_SCHEDS_E-6.pdf
Electric Rates:
9pm to 10am = $0.24362/kWh
1pm to 7pm = $0.43566/kWh
Gas Rate: $2.39/therm
Analysis:
Electric Heater – Off Peak - Morning
http://www.hayward-pool.com/pdf/manuals/Spa-Heaters-ISCSPAXI.pdf
Hayward 11kW Electric Heater
11kW = 37,532 btu/hr @ $0.24362/kWh = $2.68/hr or $1.00 buys 14,005 btu
Electric Heater – Peak – Mid Day
http://www.hayward-pool.com/pdf/manuals/Spa-Heaters-ISCSPAXI.pdf
Hayward 11kW Electric Heater
11kW = 37,532 btu/hr @ $0.43566/kWh = $4.79/hr or $1.00 buys 7,832 btu
Heat Pump – Off Peak - Morning
http://www.jandy.com/~/media/zodiac/global/downloads/sl/sl6408.pdf
Jandy JE3000T
Low Ambient Temp: 6.34kW = 86,000 btu = $1.54/hr or $1.00 buys 55,679 btu
Heat Pump – Peak – Mid Day
http://www.jandy.com/~/media/zodiac/global/downloads/sl/sl6408.pdf
Jandy JE3000T
Warm Ambient Temp: 6.34kW = 130,000 btu = $2.76/hr or $1.00 buys 47,065 btu
Gas Heater – Anytime
JXi Pool Spa Heater | Jandy Pro Series
Jandy JXi400
Assume 82% Efficiency: 4 therms of NG = 328,000 btu; $1.00 buys 34,310 btu
Thoughts?
Assumptions:
No pool cover so the pool will be cool in the morning. 78 degrees +/-?
We are on PG&E's E-6 Rate Schedule
https://www.pge.com/tariffs/tm2/pdf/ELEC_SCHEDS_E-6.pdf
Electric Rates:
9pm to 10am = $0.24362/kWh
1pm to 7pm = $0.43566/kWh
Gas Rate: $2.39/therm
Analysis:
Electric Heater – Off Peak - Morning
http://www.hayward-pool.com/pdf/manuals/Spa-Heaters-ISCSPAXI.pdf
Hayward 11kW Electric Heater
11kW = 37,532 btu/hr @ $0.24362/kWh = $2.68/hr or $1.00 buys 14,005 btu
Electric Heater – Peak – Mid Day
http://www.hayward-pool.com/pdf/manuals/Spa-Heaters-ISCSPAXI.pdf
Hayward 11kW Electric Heater
11kW = 37,532 btu/hr @ $0.43566/kWh = $4.79/hr or $1.00 buys 7,832 btu
Heat Pump – Off Peak - Morning
http://www.jandy.com/~/media/zodiac/global/downloads/sl/sl6408.pdf
Jandy JE3000T
Low Ambient Temp: 6.34kW = 86,000 btu = $1.54/hr or $1.00 buys 55,679 btu
Heat Pump – Peak – Mid Day
http://www.jandy.com/~/media/zodiac/global/downloads/sl/sl6408.pdf
Jandy JE3000T
Warm Ambient Temp: 6.34kW = 130,000 btu = $2.76/hr or $1.00 buys 47,065 btu
Gas Heater – Anytime
JXi Pool Spa Heater | Jandy Pro Series
Jandy JXi400
Assume 82% Efficiency: 4 therms of NG = 328,000 btu; $1.00 buys 34,310 btu
Thoughts?