


Air handler boot impossible to seal to duct.
Gotta love home owning. The boot under my air handler isnt even attached to the main duct. I just sealed both sides with hvac tape. But the other sides are against joist and the duct is fixed 2inches below the floor board. I attempted using half inch tubing and injecting duct mastic, but it just made a mess and didnt work. Was thinking maybe hvac company can lower it somehow but prob cant since all my electrical and water lines directly beneath it. I strongly feel they have to seal it from above by removing flooring or take out the whole air handler to get it. I think my last resorts would be to spray foam the sides and hope it dont expand inside it, or put the fiber glass up around it like how it was and just hope it slows it down, or just try seal it at the joist and hope all the hot air leaking out in that little space dosent rot the wood around it somehow.