"Hello For only $199.00 we will install a transformer that will make your new Smart Thermostat perform as it should.
Some HVAC systems were not designed to run with a Smart Thermostat. Infact there was no such a thing as Smart Thermostats when they were designed. We have a work around that will make most of them work."
"The transformer that we will provide will up the voltage to the level needed by the Nest Thermostat."