HVAC PREVENTATIVE MAINTENANCE CHECKLIST

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AccuTech Mechanical Services provide priority service for our customers who have an annual maintenance/service agreement. Bi-annual preventative maintenance will ensure that your system runs as efficiently and effectively as possible. AccuTech Mechanical Services will perform the following tasks, depending on the unit:

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OUTDOOR UNITS

• Inspect unit for proper refrigerant level and adjust if necessary

• Clean dirt, leaves and debris from inside cabinet

• Inspect base pan for restricted drain openings - remove obstructions as necessary

• Inspect coil and cabinet - clean as needed

• Inspect fan motor and fan blades for wear and damage - on older models lubricate as needed

• Inspect control box, associated controls/accessories, wiring and connections. Controls may include contactors, relays, circuit boards, capacitors, sump heat and other accessories. All control box and electrical parts should be checked for wear or damage.

• Inspect compressor and associated tubing for damage

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INDOOR UNITS

• Inspect and clean blower assembly (includes blower housing, blower wheel and motor)

• On older models, lubricate motor and inspect and replace fan belt if needed

• Check combustion blower housing for lint and debris and clean as necessary

• Inspect evaporator coil, drain pan and condensate drain lines. Clean as needed

• Inspect for gas leaks in gas furnaces

• Inspect burner assembly - clean and adjust as needed

• Inspect ignition system and safety controls - clean and adjust as needed

• Inspect heat exchanger or heating elements

• Inspect flue system - check for proper attachment to the furnace, any dislocated sections, and for signs of corrosion. Replace if necessary.

• Inspect control box, associated controls, wiring and connections

• Clean or replace air filters

• Inspect conditioned airflow system (ductwork) - check for leaks

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WHILE YOUR SYSTEM IS OPERATING

• Monitor system starting characteristics and capabilities

• Listen for abnormal noise

• Search for source of unusual odors

• Monitor air conditioning and heat pump systems for correct refrigerant charge

• Measure outdoor dry bulb temperature

• Measure indoor dry and wet bulb temperature

• Measure high and low side system pressures

• Monitor gas furnace for correct line and manifold gas pressure - make adjustments as needed

• Measure temperature rise and adjust airflow as needed

• Check vent system for proper operation

• Monitor system for correct line and load volts/amps

• Monitor system operation per manufacturer's specifications

• Provide system operation report and recommend repairs or replacement as necessary