Maintaining your air conditioning unit is key to ensuring it runs efficiently and effectively, especially during the hot summer months when it’s needed most.
Regular cleaning of the outside AC unit not only extends its life but also improves your heating and cooling system performance.
Here’s a step-by-step guide to help you clean your outside air conditioner unit.
1. Turn Off the Power
Safety first. Before you begin any maintenance on your air conditioner unit, make sure to turn off the power. This is crucial to prevent any accidents or injuries. Locate the exterior power circuit near your unit, usually housed in a metal box mounted on the wall. Flip the switch to the off position. For added safety, you can also turn off the power at the main circuit breaker panel in your home.
2. Remove Debris from Around the Unit
Start by removing any debris surrounding your outdoor AC unit. Leaves, dirt, and branches can accumulate around the air conditioner, obstructing airflow and decreasing efficiency. Use a garden hose to gently rinse away debris from the sides. Avoid using a pressure washer, as high pressure can damage the unit. Make sure to clear a space of at least two feet around the unit to ensure optimal airflow and accessibility for maintenance. Consider renovating your exteriors or installing a concrete pad for your AC unit to prevent soil and grass from getting into it.
3. Temporarily remove protective grilles or outer covers
To access the fins and internal components of your AC condenser unit, start by removing the protective grilles or outer covers. These are usually secured with screws so you will need a screwdriver to do the job. Once removed, you will have a clear view of the unit’s interior, including the back side of the fins. This allows for thorough cleaning and maintenance. This also helps when you spray outward so that the water moves from the inside (near where the fan and motor assembly are) toward the outside, where the fins are located. This direction helps push dirt and debris outward rather than further into the unit.
4. Straighten the Fins
The fins on the evaporator and condenser coils are delicate and can easily get bent, blocking airflow through the coil. To straighten them, use a fin comb, which can be purchased at most hardware stores. Gently run the fin comb through the fins to straighten them. Be gentle to avoid damaging the tubing embedded within the fins.
5. Clean the Coils
Over time, the coils can accumulate dirt and debris that insulate them and decrease the unit’s ability to expel heat. To clean the coils, use a coil cleaner, which can be sprayed directly onto the coil using a spray bottle. Allow the cleaner to foam and lift the dirt off the coils. After a few minutes, rinse the coil with water using a gentle stream from a garden hose. Ensure that all cleaners and debris are thoroughly washed away.
6. Inspect and Clear the Drain Line
The drain line can become clogged with algae and mould, which can cause water to back up and damage the system. To clean the drain line, locate the line near the indoor cooling coil, typically mounted above the furnace in the basement. Use a wet/dry vacuum to suction any blockage out from the drain line. For preventive maintenance, pour a mixture of hot water and vinegar through the drain line to kill any mould or mildew growth.
7. Check the Coolant Lines
The refrigerant lines running from the evaporator coil on the inside of the house to the outside unit should be insulated to maintain efficiency. Check these lines for areas where the insulation may be frayed or missing. Replacing or repairing the insulation can significantly improve the efficiency of your system. Foam insulation sleeves can be easily fitted around the lines, or spray foam can be used to cover any gaps.
Conclusion
Regular maintenance can prevent costly AC repairs and extend the lifespan of your air conditioning system. By following these simple steps, you can ensure that your unit operates at peak efficiency, saving you money on energy bills and keeping your home comfortable during the warmer months.
Remember, if you encounter any issues that seem beyond simple DIY tasks, do not hesitate to call a professional HVAC company to handle more complex problems safely and effectively.
FAQ: Cleaning Your Outside AC Unit
1. How often should I clean my outside AC unit?
It’s recommended to clean your outside AC unit at least once a year, ideally during the spring before you start using it heavily in the summer months. However, if you live in an area with high levels of dust, pollen, or other airborne debris, consider cleaning it twice a year.
2. Can I use a pressure washer to clean my AC unit?
It is not advisable to use a pressure washer to clean your AC unit as the high pressure can damage the fins and other delicate components. Instead, use a gentle stream from a garden hose to rinse off the unit.
3. How can I prevent my AC unit from getting dirty quickly?
To protect your outdoor AC unit from accumulating dirt and debris quickly, ensure that the area around it is clear of leaves, branches, and other debris. Additionally, consider installing a protective cover over the unit during the off-season to keep it clean and ready for use.
4. What are the signs that I need professional help with my AC unit?
You should consider professional help if you notice any of the following: unusual noises coming from the outdoor unit, frequent cycles or the AC turning on and off more often than usual, little to no air coming from the AC, ice formation on the coils even after cleaning, or a significant increase in your energy bills. These could be signs of underlying issues that require expert diagnosis and repair.
