Indoor housing facilities for dogs shall be sufficiently ventilated when dogs are present to minimize drafts, odors, ammonia levels and moisture condensation. Ventilation shall be provided by means of windows, doors, vents or air conditioners. Auxiliary ventilation from fans, blowers or air conditioners shall be provided when the ambient temperature is 85° F (29.5° C) or higher. The relative humidity shall be maintained at a level that ensures the health and well-being of the dog housed therein in accordance with generally accepted husbandry practices.
7 Pa. Code § 21.26