A few cases where functional hardware is a design element. An obvious one, above, is the pint sized chemical plant on top of the Penn Station LIRR entrance on 34th St. Left, an apparently permanent crane (like a windshield wiper) at 18th St. & 7th Ave.
Below left, on Allen St. near Rivington, ventilation pipes for the place next door -- so its exhaust doesn't foul the cheesy stallion medallion on the new hulk? Below right, on 23rd St. off 3rd Ave., some proudly exposed pipe.
Below left, a headband of small HVAC units above Lexington Ave. in the upper 20s; below right, one big HVAC perched like a tiny head on a robot at Purves & Jackson in Long Island City.
And below, one of my favorite pieces of hardware headgear -- at once functional, futuristic, and vaguely fascist -- on Warehouse 11 in Williamsburg.