2023 water furnace 5 series including performance and refrigeration package. Two pump non-pressurized flow center. Alcohol test 0.977 equivalent to 10° f freeze protection Inspect and test run hot water generator circuit. Confirm relay and circulator pump operation, confirm heating temperature rise from 66.7 Entering to 73.2 leaving. During 45 minute run test for cooling season maintenance the tank temperature increased from 63.8 to 71.4 Test run vision pro 8000 thermostat in multi-stage cooling mode and confirm 45.3 supply air temperature. Test run non-pressurized two pump flow center at 13.9 GPMs 30x32x2 pleated air filter is like new and on schedule with homeowners All equipment is clean safe and ready for summer Homeowner will consult water heater plumber regarding any further concerns