Low temperature operation on average accounts for a small percentage of the total operating time of a given heat pump chiller. Integrating a boiler into the water loop can help supplement the heating demands of a space during these times. The Trailblazer HP absorbs heat from the ambient air and transfers it to the water loop. This water is then cycled through the boiler, which can further increase the water temperature if the heat pump chiller is unable to meet the setpoint temperature during colder ambient temperatures. This ensures that water loop temperature is maintained for consistent heating while also benefitting from the energy-saving features of the Trailblazer HP air cooled chiller with heat pump.