Can a commercial landlord require a tenant to install a vent to the outdoors for a clothes dryer?

Question Details: The business was purchase 7 years ago; it had been operating in the space for 6 years prior. The lease says that the space can only be used for that particular business. The business operates a clothes dryer vented to the indoors, as was the case when the business originally started. Recently, it has become known that the dryer is not vented properly per the fire code. The landlord now wants the tenant to have a vent installed through the roof the vent the dryer. As a tenant I feel the building owner should pay for the vent. The owner was aware of the intended use of the space, but did not mention that I would eventually have to install a vent.

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