If there was a flood from the HVAC was a result of the tenant not changing an air filter (I don't see the connection but I am not an HVAC expert) then you might have a claim against tenant. However, if there was a flood due to other causes then I think that liability may fall on you. You would definitely need to have the mold taken care of. While mold suits are difficult to prove (as far as damages, especially if you take care of the mold), that does not mean the tenant cannot sue. You didn't mention what he HVAC person thought was the cause of the problem. But, even if the HVAC related flooding was due to the tenant, you still would have a responsibility to have the mold problem remediated, but you may be able to charge the costs to the tenant if it was his fault.
Answered on Sep 15th, 2017 at 7:46 AM