July 24, 2012 Uncategorized  No comments

Chances are, if you’re like most residents here in the Minneapolis metro area, you end up running your air conditioner constantly during part of our humid summers. Every year, a certain number of unlucky homeowners end up with water or moisture damage in their homes, even to the point of a ceiling collapse. That’s because air conditioning systems produce more condensation than you’d think and can do quite a bit of damage before the often hidden mold and rotten wood are discovered.

The problem usually occurs when evaporator coil condensation hits a clog, causing an emergency drain pan backup. Avoiding Moisture Damage When Your A/C's Running All The TimeLook for water coming from a pipe near the top of an exterior wall, running down inside the wall, or seeping through the ceiling. When you see those telltale signs, shut off the air conditioner and call your HVAC technician to have the drain-line blockage cleared.

Other causes of water damage are burned condenser contacts, dirty coils, mineral deposits, insect/rodent nests inside the system, or low refrigerant pressure. All of these things can stress the evaporator and cause a freeze-and-defrost cycle, creating more water flow than the drain can handle.

To cut the risk of water damage, contact your HVAC contractor for:

  • Annual professional inspection and preventive maintenance for your air conditioning equipment, including drain pan, emergency drain lines and filter replacement. Your HVAC contractor will clean the coils, check refrigerant pressure and look for blockages or burned contacts, so any needed repairs can be done before a major problem develops.
  • An algaecide treatment to help prevent clogs from algae growth
  • Installation of a safety float switch to automatically shut off the A/C system when standing water accumulates
  • Re-installation of drain lines for proper drainage, if your contractor determines the A/C wasn’t correctly installed initially

In between professional visits, homeowners should:

  • Change the air filter monthly or whenever it’s dirty/clogged.
  • Clear away tall grass/shrubbery around the outdoor condenser unit. Debris restricts airflow, which may overwork the evaporator coil.

Questions about moisture damage in your Twin Cities area home? Contact the experts at Marsh Heating & Air Conditioning. Visit our website or give us a call.

Our goal is to help educate our customers about energy and home comfort issues (specific to HVAC systems).  For more information about moisture damage and other HVAC topics, download our free Home Comfort Resource guide.

Marsh Heating and Air Conditioning services Minnesota’s Twin Cities. Visit our website to see our special offers and get started today!       

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