Air Conditioning/Heating System
	Description HVAC stands for "heating, ventilation, and air conditioning." These three functions are closely interrelated by providing comfort, acceptable indoor air quality and reasonable operation. HVAC systems can provide ventilation, reduce air infiltration, and maintain pressure relationships between spaces.

Maintenance Checklist

• Schedule an annual A/C check-up in the Spring.
• Schedule an annual Heater check-up in the Fall.
• Be sure the evaporator coil inside your attic is inspected and cleaned if necessary.
• Scan windows and exterior doors to ensure no air is seeping through.
• Inspect the fireplace and flues for repairs and clean as needed.
• Inspect, clean and replace air filters monthly.
• Make sure the outside condenser is free of debris by trimming plants and shrubs that could obstruct proper airflow and circulation.
• Visually inspect exhaust vents for rust, damage or deterioration.

Troubleshooting - A/C & Heating System

Problem	Potential Cause	Potential Solution
The unit will not power on.	Fuse is blown or the breaker is tripped or electric switch in attic is turned off.	Inspect the circuit breaker and replace the fuses in disconnect box. Be sure the circuit breaker box is turned off.
The air is not cool.	Dirty condenser coil.	Clean the condenser coil.
The unit continuously turns off and on.	Dirty filter.	Clean or replace the filter.
Water is leaking into walls and ceiling.	The drain pan for the evaporator coil in the attic is clogged.	Unclog the hose so water can freely flow.
No heat from unit.	There is no power to the unit.	Be sure the unit is on.
	Blower motor is broken.	Replace the motor.
The room is not warm enough.	Dirty filter.	Replace the filter.
	Dirty registers.	Clean the registers and be sure they are open.
	Air leaks in the ducts.	Seal the leaks.
	Blocked ducts.	Remove obstructions from the ducts.
	Registers are closed.	Open registers.
	Duct damper is incorrectly positioned.	Adjust dampers correctly.
Dust gathers in home.	Dirty filter.	Replace filter.
	Dirty ducts.	Contact a professional to clean the ducts.
The blower motor makes noise.	Loose pulley.	Tighten the pulley screws.
	Belt is worn or the tension is tight.	Replace the belt or tighten the tension.
	Blower bearings need oil.	Oil the bearings.