Often do I see the flexible, cheap plastic hose snaked through ceilings, above boilers, through garages, and depositing into gable vents. All of which are typically not allowed for fire safety reasons.
You can no longer purchase this type of hose in New York state for dryer venting, and for good reason. Laziness.
Most people do not keep the stuff free of lint 'cause they never clean it, Well, some people do, but from what I see it is few and far between.
A good appliance contractor will be able to update this hose with metal exhaust piping which is now required any place this piping must penetrate a wall or floor.
If your do a lot of laundry, this piping will need to be cleaned at least a couple of times per year, If you don't want to pay for it do it yourself. If you are not the type, you will need to pay for this! And you SHOULD to protect you, your family, and your home.
Ray Wilson is a Home Inspector, covering all of Long Island (Nassau and Suffolk), the 5 boroughs of NYC and now upstate NY. For any home inspection related questions he can be reached at Meticulous Home Inspection Corporation. He can be reached at 631-902-6761.