How to Avoid Common AC Installation Mistakes

Learn about the most common mistakes when installing AC and how our experts ensure a flawless job.

Incorrect Sizing: Not Too Big, Not Too Small

One of the most common and costly mistakes in climate control is installing a unit that is too small or too large for the room. Many people think that buying a larger unit than necessary will cool the room faster. However, an oversized unit will shut off before it has extracted the humidity from the air, leaving a cold but uncomfortably sticky environment. Conversely, a small unit will work tirelessly, consuming excess energy and breaking down soon. A professional air conditioning installation in Las Rozas always starts with an exact cooling capacity calculation, taking into account square meters, solar orientation, and thermal insulation.

Poor Placement of Indoor and Outdoor Units

Location is everything. Placing the indoor unit (the split) right above a heat source, such as a halogen lamp or near the kitchen, will confuse the thermostat, making the machine cool non-stop. Similarly, installing the outdoor unit on an enclosed balcony without ventilation or where it receives direct sunlight all day drastically reduces the system's efficiency, forcing the compressor to work at extreme pressures. Our technicians meticulously study your home's layout to find the optimal location that guarantees the best airflow and maximum energy efficiency.

Failing to Vacuum the Copper Pipes

This is the invisible mistake made by almost all unqualified installers. Before releasing the refrigerant gas, it is absolutely mandatory to use a vacuum pump to extract all the air and moisture from the copper pipes. If this step is skipped, the moisture will react with the compressor oil, creating corrosive acids that will destroy the motor from the inside within a couple of years. Always demand that your installer performs a deep vacuum of the system; it is the guarantee that your machine will last more than 15 years.

Deficient Insulation and Water Leaks

Air conditioning generates a lot of water condensation. If the copper pipes are not correctly insulated with high-quality lagging along their entire length, that condensation will drip inside your walls or false ceilings, causing mold spots and structural damage. Furthermore, the drain pipe must have the proper incline. A miscalculation in the slope will cause water to pool in the indoor tray, resulting in the split "spitting" water into your living room.