Maintain your air-conditioning unit and save your money on energy. 10 Best steps to maintain Air conditioner units in India. An HVAC supporter of service experts. The best time to use these tips is just before each cooling season begins.
Your heating, ventilating, and air conditioning unit system (HVAC) will include a furnace and AC or a heat pump, which both heats and cools.
Both variants will have an internal air conditioning units (evaporator and blower) and an external unit (condenser coil and compressor). These instructions apply to the entire house air conditioning unit or heat pump unit.
- 1 STEP 1: Shut Off The Power
- 2 STEP 2: Remove Debris
- 3 STEP 3: Clean The Fins
- 4 STEP 4: Straighten The Fins
- 5 STEP 5: Clean Area Around The Air Conditioning Unit
- 6 STEP 6: Level the Unit
- 7 STEP 7: Clean the Evaporator Coil
- 8 STEP 8: Clean a Plugged Evaporator Drain
- 9 STEP 9: Change The Blower Filter
- 10 STEP 10: Turn The Power Back On
- 11 Conclusion
STEP 1: Shut Off The Power
Due to the hazards of working around electricity and the moving parts of air-conditioners, it is necessary to shut down the unit completely. On the external condenser / compressor, look for an external shut-off box near the unit. Indoors, turn off the power on the breaker box.
STEP 2: Remove Debris
On the external condenser/compressor, remove the fan cage. Using a screwdriver or wrench, remove the fasteners and lift the cage or fan grill away from the top of the unit. Wet / dry vacuum by hand, or from the interior, with clean leaves and other debris.
STEP 3: Clean The Fins
Remove the outer coverings and use a brush attachment on a powerful outlet vacuum to remove all external dirt. Then, using a gentle stream from the garden hose, spray through the wings from the inside to remove any built up dirt or debris from between them.
Never use a pressure washer, as pressure can damage the wings. If the fins are particularly dirty, use commercially available fin cleaning sprays (available at home improvement centers, read and follow manufacturer instructions).
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STEP 4: Straighten The Fins
Since any reduction in airflow through the wings can reduce efficiency, carefully straighten the wing using a butter knife or a commercially available fin-straightening tool. Be gentle so that the tubing within the wings is not damaged.
STEP 5: Clean Area Around The Air Conditioning Unit
Once finished with the cleaning, replace the fan cage. Rake leaves and debris outside the condenser and cut at least 2 feet of branches and vegetation in all directions to ensure proper airflow around the unit.
During the winter months when the condenser is not in use, it is good to cover the top of the Air Conditioning Unit with a piece of plywood or plastic to prevent debris from falling inside. However, do not completely cover the edges of the unit, as moisture may build up. Inside and cause rust.
In addition, a fully covered unit encourages vermin to build nests inside. Remove any cover during the operation of the Air Conditioning Unit.
STEP 6: Level the Unit
Over time, the pad on which the condenser unit sits can begin to tip as the soil settles beneath it. An out-of-level condenser unit can cause an early failure within the compressor. Check the condenser for leveling and use sedimentation shims to bring it back to leveling.
Moody of service experts adds this exception: “If you have a heat pump system, it is okay for the pad to move slightly away from the foundation of the house to allow defrost run-off during the winter.”
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STEP 7: Clean the Evaporator Coil
Air conditioner servicing: Now it’s time to go in. On the blower / furnace unit inside, find the evaporator coil door. You may need to remove some foil duct tape and remove some screws or bolts. Inside the air conditioning unit, use a soft brush to dust the coil, then spray the coil with a commercially available no-rinse coil cleaner (available at home improvement stores).
The spray will foam and then drip into the drain pan. Clean the drain pan with soap, warm water and a little bleach. Then, pour a cup of 50% bleach / 50% water down the drain.
To keep the drain clean for a longer period of time, place a commercially available drain pan tablet in the pan. This will impede future algae growth.
If the bleach solution is easily removed, skip the next step. If not, proceed to the next step. Replace the evaporator coil door and, if necessary, use foil duct tape to re-seal.
STEP 8: Clean a Plugged Evaporator Drain
Evaporator air conditioner: On the interior, hot, moist air is blown through the evaporator coil from the interior of your home. The cold coil absorbs heat from the air, cooling it before the air is circulated back into your home.
The moisture in the air condenses as liquid water on the cold surface of the evaporative coil, dripping into the bottom pan. From the pan, water flows into a drain tube that typically leads to a basement floor drain, utility sink, or outside.
Over time, algae and mold can build up and potentially plug the drain, so if the drain is either not flowing or is flowing too slowly, it will have to be unplugged.
A plugged drain can either cause flood damage to the floor or, if the system is equipped with a drain float, prevent the system from cooling to avoid flooding.
First, find the drain line where this evaporator leaves the coil enclosure. The drain is usually one-inch PVC pipe (white, gray, or black).
Finally, follow it where it drains. Often the line near the condenser unit goes outside the drains, but can also go into a utility sink or basement floor drain or, in the case of attic Air Conditioning Units, under an exterior wall.
Once located, use a wet/dry vacuum to clean the drain. It is best to remove the paper filter from a wet / dry vacuum so as not to waste the filter. Hold the wet / dry vacuum hose to the end of the drain line.
You can use duct tape or simply hold a rip around the gap. Turn on the vacuum for 2-3 minutes then switch off. This will clear the drain of any growing organic matter.
STEP 9: Change The Blower Filter
The filter in your HVAC Conditioning system must be changed at least twice a year – once when the heating season begins and once before the cooling season begins. If you live in a particularly dusty area, you may want to change it more often.
Always replace the filter with a new filter that has the same airflow rating. Then, Moody said, “Beware of ‘air purifying’ or HEPA filters,” he says, “because they can dramatically reduce the airflow in your system. Low airflow can cause indoor coils to freeze. . “
Locate the filter enclosure at the indoor furnace / AC, where large fresh air enters the return duct unit. You may need a screwdriver to turn the latch to open the door for the filter enclosure.
Remove the old filter and install the new filter by matching the air-flow direction arrow on the filter to the arrow on the unit. Close the door and fasten it.
STEP 10: Turn The Power Back On
While these steps will help keep your AC system in top shape, keep in mind that there are maintenance items that only a trained HVAC technician will be able to do.
For example, a slow refrigerant leak in your AC system can result in costly compressor failure, but a homeowner does not have the equipment or skills necessary to check coolant levels.
In addition, clean ducts and proper airflow are essential to a well functioning system, but homeowners lack the tools needed for the job. Bottom-line? While some AC maintenance can be done by a general homeowner, it is still necessary to periodically check with an expert technician.
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