Today I came to Melanie’s Edgemont home becuase the main floor thermostat is working intermittently. The same issue happened last year with the second floor thermostat. Upon diagnostics of the 19 year old system I found the wireless thermostat was not communicating with the equipment interface module. Like last year, I reset the programming of the interface and thermostat and reconnected. The system is working now but will likely fail again. I recommend the thermostats be replaced. The furnaces are also 19 years old and at their life’s expectancy. Scheduled to return Thursday September 4 2025 in the morning to replace both wireless thermostats and equipment interface modules. 50% paid today with the remainder due at time of job completion. 25% restocking fee should the job be cancelled.