Our preventative maintenance visits are always thorough and professional. You can ensure that your visit was up to our standards by following the Preventative Maintenance Checklists below for your equipment type.
Heat Pump / AC
- Verify thermostat operation
- Verify indoor and outdoor unit are functional
- Replace the air filter or clean if reusable
- Verify indoor coil cleanliness
- Verify overall condition of indoor coil
- Inspect condenser motor bearings
- Verify condenser motor amp draw.
- Inspect contactor for pitting
- Verify all capacitor readings
- Verify voltage to outdoor unit
- Verify refrigerant levels
- Verify compressor amp draw.
- Verify crankcase heater operation if applicable
- Verify defrost controls if applicable
- Verify reversing valve operation if applicable
- Verify coil temperature
- Verify outdoor coil cleanliness
- Inspect condensate drain, trap and pan
- Verify required clearances are met
- Verify outdoor unit is secure
- Inspect outdoor unit panels, fasteners, and snow feet
- Clean, vacuum and wax all necessary items
Electric Heat
- Verify thermostat operation
- Verify that the heat works
- Replace the air filter or clean if reusable
- Inspect bearings on blower motor
- Inspect blower belt, wear, tension
- Verify voltage to unit
- Verify amp draw on blower motor
- Verify amperage draw on each element
- Verify total amperage draw on elements
- Inspect heat sequencer
- Inspect electrical wiring and connections
- Verify temperature rise
- Verify supply temperature
- Inspect heat anticipator
- Clean, vacuum and wax all necessary items
Gas Furnace
- Verify thermostat operation
- Verify furnace/heat come on
- Inspect flame sensor and clean
- Inspect drain and pressure tubes for leaks, clogs, or build up
- Inspect condensate trap for build up
- Replace the air filter or clean if reusable
- Inspect blower motor bearings
- Verify blower belt wear, tension
- Inspect flue for rust or corrosion
- Verify flue has chimney liner (If applicable)
- Verify flue has proper orientation and clearances
- Verify ignitor ohms
- Inspect burners for corrosion and efficiency
- Inspect heat exchanger for cracks, soot & rust.
- Verify exhaust co reading
- Verify blower motor amp draw
- Verify inducer motor amp draw
- Verify manifold pressure
- Verify temperature rise
- Verify static pressure
- Check fan controls
- Inspect all safety controls for proper operation
- Inspect condensate drain line if applicable
- Clean, vacuum, and wax unit
Fireplace
- Inspect glass for cracks or other damage
- Inspect the pilot and watch for proper orientation
- Verify proper millivolt readings to pilot
- Cycle burner from remote or wall switch
- Inspect remote batteries for corrosion
- Inspect receiver batteries for corrosion
- Inspect firebox condition, note any rust, cracks etc.
- Remove burner and log assembly and check for any cracks, rust or other damage
- Clean pilot assembly
- Clean burner, firebox and log set
- Clean glass and trim pieces
- Clean gas valve
- Clean under and behind unit
With every Marr’s Maintenance appointment, you will also get high res pictures detailing your equipment in depth so that we can track part and equipment wear year over year. Logging this data at every appointment is what separates Marr's Heating and Air Conditioning from other companies.