Preventive maintenance is critical to a well functioning Hvac units.
hvac maintenance offers many benefits such as:

• Increasing the life span of the HVAC unit.
• Lowering the cooling and heating bills.
• Cleaning the interior air creating a comfortable environment for the building occupants.

HVAC maintenance checklist: Replacing HVAC Filters 1 to 6 Months

The best tips for HVAC filter maintenance is to open the panels to easily access the coils and filters.
Replacing HVAC filters is critical to clean air because the air filters clean out air pollutants such as molds, skin cells, and allergens.  It is important to visually inspect HVAC filters ever 1 to 6 months to make sure the filters is not blocked by dirt load.

Getting the Best Filter with the proper capacity

ASHRAE standard is used to rate HVAC filters capacity to filter out air borne pollutants, the ASHRAE standard  assigns MERV rating to  filters based on their efficiency. The higher the MERV rating the more efficient the filter is. Generally when you want to buy a filter, it is best to get a filter with a MERV rating of 11 +.

Treating Coils (after cleaning them)

Maintenance of  coil is very important. After you cleans the coils, it is important to treat them with Antimicrobial treatment to prevent the growth of mold growth. The antimicrobial treatment prevent the microbial processes that lead to mold growth, thus prevent the coil from being fowled by mold. Best to apply the antimicrobial treatment after you clean the coil.

Clean Air Ducts
Another essential step for HVAC maintenance is to check the air ducts every 2 years. It is best to hire a proffessional for air duct cleaning. You can find HVAC professional contractors on the NADCA site. www.nadca.com

Repair Leaks in the Supply Duct and Cabinet annually

It is important to check for air leaks fix fix any leaks using patching or replacing the latches. It is an essential step for HVAC maintenance.The integrity of the duct and cabinet is important, since it is filled with high pressure air which can lead to some air leaks.

Annually check the belts, bearings, and fans

Check the fans motors to make sure it is running in the proper directions. Majority of the time when HVAC technicians check the fan motors, it is usually running the wrong way.  Most people do not notice since there is at least some air flow coming out even when the motor is running the wrong way. It is usually caused by improper wiring which connect to the motor.  Making sure the fan motor is running the proper way can increase interior air flow.

Check the fans to make sure the bearing are properly lubricated since of a failing bearing can be detected by excess vibration, heating coming from the bearing, as well as excessive noise. Be careful of over greasing, that can be damaging as well.

Check the belts to make sure the belt is properly installed. A maladjusted belt can lead to excessive noise and does not last as long as a belt that is well adjusted. Check to make sure that the belts provides proper tension because loose belts can lead to rapid wear, and cause torque loss. If the belt is too tight then it can cause excess load to the motor leading to fast failure of the belts or the bearings.

Inspecting Dampers Annually

Inspecting and cleaning the dampers can have a big positive effect on indoor air quality you breath and can decrease the utility bills. If dampers are not properly maintained and cleaned, the dampers start to stick and can overload the cooling coil with hot air from the outside. After you clean the dampers then it is important to run it though its full range.

Follow hvac maintenance checklist to keep a well functioning HVAC system.
Maintenance of your HVAC units can save you hundreds of dollars in repair. By taking action and performing hvac maintenance with your own hands you can be sure that you don’t get screwed over by companies that break your hvac unit on purpose, so they can tell you there is a problem and charge you more money.

You can also learn more about HVAC Wiring Diagrams by click this link..