Western New York's Best Home Services Company. Heating & Cooling, Plumbing, Generator Systems, Duct Cleaning, Radon Mitigation and more! Zenner & Ritter is Western New York's premiere Home Services Company. From Heating and Cooling, to Automatic Standby Generators, to Water Heaters and Plumbing Services, there is simply no better choice than Zenner & Ritter. Indeed, for over 90 years, Zenner & Ritter has provided: Western New York Homes and Businesses with an unbeatable combination of Affordable Prices, Quality Work, and Reliable Service. With our Best Price Guarantee, Zenner & Ritter Customers always receive a great price and never need to haggle!