We thought our Furnace died on a Sunday night during this Zero degree weather we were having. Lenz responded with a service guy (Scott) to our house within 35 minutes. Thank goodness the furnace was fine. The thermostat is what died. Lenz/Scott were HONEST and told us all we needed was a new thermostat instead, they could’ve easily said the furnace was dead. It is over 13 years old and I would’ve believed them. This means a lot to me! I will call on you guys for a long time! Thank you!