Keeping your outdoor A/C unit in good shape is the key to a cool, climate-controlled summer—especially in sunny San Antonio, where temperatures hover over 90 degrees for much of the season. However, not all the tips and tricks for maintaining your outdoor A/C unit are intuitive for homeowners, and it can be easy to take an “out of sight, out of mind” approach. Today we’re discussing our top do’s and don’ts for your outdoor A/C unit.
A/C Maintenance “Don’ts”
Over the past few months residential A/C misting systems have increased in popularity. These devices may even sound like a good idea–they mist water over your outdoor unit when your air conditioner is running to reduce the temperature of the surrounding air, supposedly preventing your A/C unit from being overworked. However, this continual misting can cause a build-up of mineral deposits like lime, iron, and calcium, especially with San Antonio’s mineral-rich water. HVAC misting systems can also rust your unit and could even void your unit’s warranty. Instead, leave your system alone and let it run as intended.
On the topic of water, power-washing your unit is also something we can’t recommend. The real cause for concern with power-washing isn’t from the water – your unit likely gets rained on without issue – it’s the pressure. Using a harsh stream of water can damage the delicate aluminum fins on your unit. Instead, be careful as you wipe down, gently hose off your unit of dirt and debris that may be blocking airflow once or twice a year. Better yet, have your HVAC technician clean your unit during your HVAC system’s regular check-ups.
Don’t let pets urinate on your unit! Pet urine is far more damaging to your unit than water; frequent exposure to this urine can corrode your coils and lead to refrigerant leaks. Keep an eye on your pets when they’re outside. If they’re especially interested in your unit, consider creating a barrier.
It’s common for homeowners to plant bushes or shrubs to hide their unit or keep children and pets away from it. While this practice is fine, it’s important to not allow plant growth or other objects to block your A/C condenser. This can block airflow, which causes performance issues. If you’re not keen on yard maintenance, consider a privacy fence instead. Whatever you decide on, just be sure to maintain proper clearance of at least 2 feet around your unit so HVAC technicians can get in there when needed and your HVAC system can do its job.
You may wonder if shielding your unit from the elements or even shading your unit during those hot summer months might be helpful. Truthfully, outdoor HVAC units are designed to withstand these conditions, and it’s important to maintain minimum spacing, usually at least five to six feet, above the unit to ensure proper airflow. Furthermore, efficiency studies show that the effect of shading your unit is minimal at best—let your unit do what it was designed to do without interference.
A/C Maintenance “Do’s”
First and most importantly, keep your A/C unit clean. Outdoor units are exposed to lots of dirt and debris but a dirty air conditioner can’t function as effectively, so regularly check your unit for any blockages. Periodically rinse the outdoor coil to prevent buildup.
Finally, be sure to schedule regular preventive maintenance for your HVAC unit. It’s crucial to have your unit professionally serviced by a certified HVAC technician, like the experienced techs at North East Air Conditioning, Heating & Plumbing. Our HVAC professionals can inspect your entire system and perform any repairs necessary, helping to extend the lifespan of your unit.
