Is $1,700 to install a refurbished Pentair Master Temp 400 heater a fair price?

This quote is for the replacement of an existing pool/spa heater. The homeowner is considering replacing the current 2009 Pentair Mastertemp 400 heater with a new one, potentially the same model or a stronger Pentair heater suitable for a larger pool/spa. The existing heater is malfunctioning, turning on and off and failing to reach the selected temperature, despite previous repair attempts by a pool service company. The quote covers the cost of a new unit and its installation. The homeowner is evaluating whether to invest in a new heater versus repairing the old 16-year-old unit. They are also curious about improvements in Pentair heaters since 2009 and the potential benefit of a stronger model for their pool/spa size. The quote is for a new heater, implying the full cost of the unit and its installation. - Scope: Replacement of existing pool/spa heater - Current Heater: Pentair Mastertemp 400 (from 2009) - New Heater Consideration: Pentair Mastertemp 400 or a stronger Pentair model - Reason for Replacement: Current heater turns on and off, won't reach selected temperature, and previous repair attempts by pool service company failed.

The quote is for repairing a Pentair MasterTemp 400 pool heater that is displaying a "Service Heater" light and a stack flue sensor (SFS) error. The control board was also continuously blinking all red lights. - Diagnosis: Stack flue sensor (SFS) error and continuously blinking red lights on the control board - Included Work: Replacement of the control board - Included Work: Replacement of the stack flue sensor

This quote is for the replacement of an existing pool pump. - New Pump: Pentair 3hp - Service: Installation