Flood Damaged HVAC Equipment

The South Central, Midwest, and the Northeast have seen record rainfall in the last couple of weeks with more coming , especially, the next couple of days.  Rivers are over flood stage.  Sewer systems cannot keep up with all the rain and sewers backed up into basements.  Water also entered many basements from windows and doors and some people had water up to the first floor of their homes and some even higher.


Soon,  the clean up will begins and the damage created by the storms and the flooding, once again brings attention to the safety hazards involved with flood damaged HVAC equipment.

Submerged HVAC equipment typically is damaged beyond what would be considered cost-effective repair. Fully submerged equipment requires replacement of all open exposed electrical controls and motors. Likewise, gas piping, controls and burner systems require a combination of component part replacement and cleaning to assure proper, safe operation. Flood damaged equipment is NOT covered by any manufacturer’s warranty.

In addition, submerged equipment, along with the air handling or duct systems are subjected to the potential biological hazards caused by contaminated flood water and sewer back-up getting into the system. This can also get into the unit insulation of the furnace or air handler as well as the duct work and can create molds and other problems.

It is strongly recommended that complete equipment change-out coupled with a thorough duct system replacement or cleaning is likely the action required to restore safe, reliable HVAC system operation.

It is also strongly recommended that all flood damaged HVAC systems remain offline until properly inspected and dispositioned by a skilled HVAC professional.

We all hope that we are never in this position but, when it does happen, it is always best to “do it right the first time” and avoid a possible second disaster because we tried to shortcut the initial repair.


About yorkcentraltechtalk

I have been in the HVAC industry most of my life. I worked 25 years for contractors on anything from residential to large commercial boilers and power burners. For the past 23+ years I had been employed by York International UPG Division ( a division of Johnson Controls) as a Technical support/Service Manager but I am now retired. One of my goals has always been to "educate" dealers and contractors. The reason for starting this blog was to share some knowledge, thoughts, ideas, etc with anyone who takes the time to read it. The contents of this blog are my own opinions, thoughts, experiences and should not be construed as those of Johnson Controls York UPG in any way. I hope you find this a help. I always welcome comments and suggestions for postings and will do my best to address any thoughts, questions, or topics you may want to hear about. Thanks for taking the time to read my postings! Mike Bishop
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4 Responses to Flood Damaged HVAC Equipment

  1. Richard Parker says:

    About the only time attic mounted furnaces and air handlers make sense is when a flood can be expected.

  2. jk says:

    hi this is not regarding this topic, but i need help on a york roof i am a licence g2 tech and i have a roof top unit everything comes on fine but theres fire shooting out of the breather hole of the pilot tubing ( breather hole meaning the square cut out beside the flare nut)

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