Preventing HVAC Water Damage

Water Restoration

The heating, ventilation, and air conditioning (HVAC) system can cause extensive water damage if it’s not maintained properly. Water may leak inside your home if the drain becomes clogged, the evaporator coils freeze or if the pipes are not connected properly. Here’s a look at how to prevent HVAC water damage:

  • Change HVAC filter regularly at least once a month to help prevent the unit from overworking, which can cause freezing and then defrosting on the evaporator coils, leading to water damage. Choose high-efficiency particulate air (HEPA) filters, but check the instructions manual first to know what type of filter you need. If the filters are located inside the furnace or air handler, hire a contractor to change the filters.
  • Maintain the condensation drain line.
    • When your AC unit is running, check the condensation line opening to make sure you see water flowing to the drain. The amount of water that flows depends on the humidity level in the house.
    • Flush the drain with an algae inhibitor. Once or twice a year, flush out your drain line with an algaecide to prevent mold or algae from forming. Use a commercial solution or regular bleach.
    • If the drain line is already clogged, attach a wet/dry vacuum to the drain line (removing the paper filter first) and suck the clog out.
    • Make sure that the main drain line and emergency drain line are properly connected and installed.
    • Also check that the pipe is oriented correctly as it might be knocked out of alignment.
  • Install a condensation pump to help excess water flow into the proper disposal drain. Additionally, install a safety float switch to automatically shut down the power to the AC unit whenever condensation builds up and there is a risk of water overflow.
  • Have your HVAC system inspected professionally. HVAC inspection and maintenance can be difficult for homeowners, so hiring a professional is a good idea. Besides the tasks already mentioned, they can inspect and fix problems related to HVAC components like the ductwork, furnace flames, grills and registers, AC compressors, the thermostat, and more.

The moisture in HVAC systems also promotes mold growth that can contaminate the air in your home. Check out how to prevent mold in HVAC systems. For mold remediation service and water removal service, contact your local PuroClean office.

PuroClean is a leading commercial and residential restoration franchising company.  Founded in 2001, the company offers fire and water cleanup and restoration services, mold mitigation and remediation, and biohazard cleanup and removal throughout the United States and Canada through its franchise network of 240 offices. Learn more. 
Last edited on 10th of October 2023