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Writer's pictureCatherine Macke

How to Prepare Your HVAC System For Potential Flooding

With spring/summer season comes the potential for precipitation events that can cause flooding. We understand that an HVAC (Heating, Ventilation, and Air Conditioning) system is a large expense, and it’s important to take care of it and prepare it for any extreme weather changes. Preventing flood damage to your HVAC unit is important to maintain its functionality and use. Here are some steps you can take:




  1. Keep Unit Elevated: When having a new unit installed have the unit elevated above potential flood lines. This will ensure that your unit is protected from rising water. If your unit is in reach of flood levels you may want to ask your registered HVAC technician to have it raised on a platform. 

  2. Seal Ductwork & Electrical Components: If any ductwork or electrical components are unsealed or exposed make sure to have them sealed immediately. Open electrical work can be damaged with flooding. Ductwork being flooded can build up moisture. This can cause water damage in your home and cause growth of harmful contaminants like mold. 

  3. Scheduled Maintenance: Have any scheduled maintenance done through your local registered HVAC representative. Have all HVAC components inspected including seals, ducts, electrical components, 

  4. Install a Sump Pump: If your unit is located in low-lying flood zones you may need to install a sump pump. These areas can accumulate so much water that it needs to be moved from the flooded area to prevent excess. This should help from water building up around your HVAC unit. Your local registered plumber should be able to install one for you. 

  5. Gutters & Drains Cleared: Gutters and drains should be kept clear of any debris when flooding happens. Make sure to have this done before a rainstorm to safely remove any blockages from drains and gutters. During a rainstorm blocked gutters and drains can cause pooling in certain areas, potentially where your HVAC unit is located. 

  6. Install a Flood Sensor: Some homes may benefit from flood sensors. Flood sensors are indicators that can be placed around homes and buildings in heavy flood areas. When a flood sensor detects rising water it can trigger alarms and shut off your HVAC system to prevent damage and malfunction.  

  7. Emergency Flood Plan: Create a plan in the event that there could be potential flooding. This includes any necessary procedures to turn off your HVAC system and other utilities. Keep your HVAC unit covered from rain and debris. If needed, put sandbags around the perimeter to direct water flow away from your home and unit to limit rising water levels. 

  8. Flood Insurance: If you don’t already have flood insurance you may want to consider getting it, if it is offered in your area. In the event of flooding, if there is any damage to your HVAC system it could potentially be covered. Talk to your insurance provider to get all the details on what is covered.


Following these preventative measures can reduce the chance of flood damage to your HVAC system. It can continue to keep it operating after flood events, and prevent the need for added maintenance or a unit replacement. If you have any questions about or need to have a scheduled maintenance/inspection contact us at Air-Mart AC  Heating. For any potential work a free quote is provided with our expert registered technicians.


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