viessmann vitodens 100 w boiler Note : The Lennox S40

Note : The Lennox S40 Smart Thermostat with Equipment Interface Module (22X18) works with most 24VAC furnaces

Advanced digital controls in select heating and cooling units and the PureAir™ S air purification system communicate information about various operating parameters to the thermostat to continuously maintain the most efficient operating conditions possible

The HCWB3-17K Bypass Humidifier works with the heating system to prevent the home's air from becoming too dry

Take the lead and choose a sustainable

energy-saving outdoor temperature sensor standard

viessmann vitodens 100 w boiler Note : The Lennox S40Suitable for all homes and budgets with high performance at an attractive price Exceeds ENERGY STAR efficiency requirements Low emission combustion with fully modulating Viessmann MatriX stainless steel cylinder burner for natural gas or propane Versatile Viessmann boiler control interfaces with most external controls; integrated OpenTherm communication capability; energy saving outdoor temperature sensor standard Greater ventilation flexibility with