Cool Tech Mechanical

Why is my 10 year old A/C coil already leaking?

Leaking evaporator coils have became more common in newer systems due to a variety of factors. Manufactures have had to make the tubing thinner and added rifling groves on the inside of the tubing in order to get better heat transfer to meet government mandated energy efficiency levels. These thin spots in the tubing are also being exposed to higher concentrations of VOCs (Volatile Organic Compounds). VOCs are produced from paint, glues and other construction materials that “out gas” these compounds especially in new construction. New home are also more air tight so these VOCs are more likely to be trapped in the home and then condense onto the coil and contribute to the formation of these pinhole leaks along with the electrolysis created by two dissimilar metals in the cooper tube and aluminum fin on the coil. Manufactures like Amana, Goodman and Trane are going to all aluminum tubing to try to combat this. Carrier and other are using tin plating to try to extend coil life. Lennox, American Standard, Byrant, Rheen, Ruud and other manufactures are all working on this known problem. Reducing VOC with proper ventilation with ERV (Energy Recovery Ventilators) and filtration with VOC reducing filters like Lennox's “Pure Aire” which using UVA lights and a catalyst to be one of the only filters that removes VOC will help extend coil life and create a healthier environment.For more information or to schedule a free equipment replacement estimate or service call in the Arlington TX, Ft. Worth TX, Mansfield TX or Tarrant County and surrounding area, check out our website www.cooltechmechanical.com.