The text messaging and call when technician was on his way kept me informed. Dan M was very polite and informative. Advised me of maintenance that I should do to extend the life of the furnace.

- Therese F

Gary came out and took care of everything! Very efficient, knowledgeable, courteous, and respectful. Awesome guy, great service and very reasonable. I will definitely be calling them in the future – and requesting Gary – when I need them.

- Lisa P

Called for furnace repair on Sunday. They were willing to send someone out right away. Seemed like a well run family business by the way the staff answered the phone and communicated. A part was ordered and installed in just a few days. Very friendly, respectful (we have young children who were sleeping that evening), and fair. Thanks for the great furnace service in my Amherst, NY home!

- Benjamin D. Oppenheimer

Fast service excellent price works beautifully !!!

- Eileen Sellers

Very good experience

- Timothy Bennett

Today, a service tech named Gary came to my residence to repair my a/c. He was polite, did his job professionally and answered all my questions. Zenner & Ritter is lucky to have this tech/

- Orval Smith