HVAC PREVENTATIVE MAINTENANCE CHECKLIST
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:
OUTDOOR UNITS
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Inspect unit for proper refrigerant level and adjust if necessary
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Clean dirt, leaves and debris from inside cabinet
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Inspect base pan for restricted drain openings - remove obstructions as necessary
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Inspect coil and cabinet - clean as needed
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Inspect fan motor and fan blades for wear and damage - on older models lubricate as needed
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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.
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Inspect compressor and associated tubing for damage
INDOOR UNITS
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Inspect and clean blower assembly (includes blower housing, blower wheel and motor)
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On older models, lubricate motor and inspect and replace fan belt if needed
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Check combustion blower housing for lint and debris and clean as necessary
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Inspect evaporator coil, drain pan and condensate drain lines. Clean as needed
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Inspect for gas leaks in gas furnaces
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Inspect burner assembly - clean and adjust as needed
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Inspect ignition system and safety controls - clean and adjust as needed
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Inspect heat exchanger or heating elements
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Inspect flue system - check for proper attachment to the furnace, any dislocated sections, and for signs of corrosion. Replace if necessary.
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Inspect control box, associated controls, wiring and connections
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Clean or replace air filters
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Inspect conditioned airflow system (ductwork) - check for leaks
WHILE YOUR SYSTEM IS OPERATING
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Monitor system starting characteristics and capabilities
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Listen for abnormal noise
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Search for source of unusual odors
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Monitor air conditioning and heat pump systems for correct refrigerant charge
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Measure outdoor dry bulb temperature
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Measure indoor dry and wet bulb temperature
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Measure high and low side system pressures
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Monitor gas furnace for correct line and manifold gas pressure - make adjustments as needed
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Measure temperature rise and adjust airflow as needed
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Check vent system for proper operation
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Monitor system for correct line and load volts/amps
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Monitor system operation per manufacturer's specifications
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Provide system operation report and recommend repairs or replacement as necessary



