R.H. NORTHROP CORPORATION Current Page: Home Services Careers Contact 24 Hour Service PROVIDING LEADING SERVICE IN COMMERCIAL HEATING, VENTILATION, AIR CONDITIONING, AND REFRIGERATION SINCE 1977. “R.H. Northrop has been an invaluable HVAC service provider to The Chateau Restaurants and Jake n Joes Sports Bar & Grille for the past 25 years. Their service teams have provided exceptional 24-hour service, with competitive industry pricing. The R.H. Northrop team has been indispensable in the construction of our restaurants.” -Joe Nocera, President, The Chateau Restaurants