We came across Lanz about a year ago when we needed some work done for our business. Since then, we've used them for our home's water heater, pool room exhaust fan, and most recently for our new A/C unit. They are quick, reliable and professional. I had follow up questions for almost everything they did, and they were right on top of each query with a rapid and detailed response which answered all of my questions. Highly recommend!!
Amy C.