Originally Posted By: rwashington This post was automatically imported from our archived forum.
If the dryer vent is exceeding the 25 ft there should be a booster fan installed along the vent. At that 25 ft distance the lint is not being properly pushed out. I cannot locate the IRC reference for that though. Maybe someone else has it…
Originally Posted By: dandersen This post was automatically imported from our archived forum.
Quote:
The vent has no tears and is pushing good air flow
Who's dryer was installed?
If it was the sellers, you don't know if the buyers dryer will do so good!
Just call it out.
You are not wrong to be concerned.
Always go overboard when it's a Safety Issue.
If they don't change it, it's their choice. So long as you called it, no one can come back on you.
Keep up the good inspectin! 
Originally Posted By: mcyr This post was automatically imported from our archived forum.
No matter what the code is, the bottom line is that if the code calculations are used, a dryer vent should not exceed 15 feet. More likely then not, two 90's will be used. Beyond that a forced inline fan booster must be utilized that is tied in with the dryer electrical circuit with the use of a micro switch that turns on the fan when the dryer is energized.
The best thing to report is the fact that the dryer vent seems to exceed it's designed use for length of the exhaust, and recommend review of the manufacturers recommendation of the exhaust criteria for proper venting.
Excessive vent duct could be a fire hazard at it's extremities.
