Proper Maintenance – Air Handlers
To prevent injury or death, or property damage, read and follow all instructions and warnings, including labels shipped with or attached to unit before operating your new air conditioning system.
Improper installation, adjustment, alteration, service maintenance, or use can cause explosion, fire, electrical shock, or other conditions which may cause personal injury or property damage. Consult a qualified installer or service agency for information or assistance. The qualified installer or agency must use factory‑authorized kits or accessories when modifying this product.
Disconnect all electric power to the indoor air handler or furnace before removing access panels to perform any maintenance. Disconnect power to both the indoor and outdoor units.
A clean filter saves money.
Help ensure top efficiency by cleaning the filter regularly.
When the unit circulates and filters the air in your home, dust and dirt particles collect on the filter located in your indoor unit. Excessive buildup forces the system to run longer to maintain your set temperature. And you end up paying for it.
Although special care has been taken to minimize sharp edges in the construction of the unit, be extremely careful when handling parts or reaching into the unit.
Clean or replace your filter at least once a month or twice a month when the system is running more.
Don’t waste money heating and cooling when you don’t need to.
When you’re going to be away from home for a few days – or when outdoor temperatures are moderate – don’t let your system run unnecessarily. Lower the thermostat to 55°F in the winter. And raise it to 85°F in summer. Then when you return – or when temperatures dictate – you can reset the system and it will immediately begin making your home comfortable again. Continuous fan mode during cooling operation may not be appropriate in humid climates. If the indoor air exceeds 60% relative humidity or simply feels uncomfortably humid, it is recommended that the fan only be used in the AUTO mode.
If heating system is not operational during the cold weather months, provisions must be taken to prevent
Never stop the system by shutting off the main power.
If the main power is ever disconnected for more than three hours, turn off the thermostat. Then wait for at least three more hours after the power has been restored before turning the thermostat back on. Failure to follow this procedure could result in damage to your system.
How to remove the filter from your Air Handler.
Ask your dealer where the filter is located when your system is installed. It may be behind the bottom panel of your indoor unit. Or it may be at the top, bottom, or either side. Or there may be two filters.
If you have a
Your filter may or may not be framed. 
In any case, removing a filter is easy. Just make sure you insert the clean filter with the arrows on it pointing in the direction of the airflow.
Your installing dealer is your best source of filter and maintenance information.
Both methods are quick and easy and guaranteed to cut the energy
used by your system. When replacing your air handler filters, always use the same size and type that was originally supplied. Filters are available from your dealer.
Cut operating costs by keeping snow, ice and debris clear of your outdoor heat pump unit.
NOTE: Condensation may occur on the surface of the air handler when installed in an unconditioned location.
Efficient operation of your outdoor unit requires the free flow of air over the coils. Anything that blocks this flow forces the unit to work harder to do its job. At no time should anything be stacked against the side of the outdoor unit or draped over it. Keeping it clear of debris helps it work at peak efficiency, and that helps hold down operating costs.
Locate access door marked "FILTER" and lift up the open side of the levers.
Slide dirty filter out, replace with a new filter making sure the arrows printed on it are pointing in the direction of airflow.
Hold the "FILTER" door firmly in place and snap the levers down (closed).
For regular dealer maintenance please refer to www.acca.org/industry/quality
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