Viessmann Manufacturing® B2HAA58 Vitodens B2HA 399 200-W Gas-Fired Boiler, 399 mbh Capacity, 120 VAC, Natural Gas

Item Features

• Outstanding efficiency – Up to 95% AFUE rating, and modulation ratio up to 6.5:1.
• Mobile ViCare app available – Stay connected with your boiler by adding the Vitoconnect WiFi module (sold separately).
• Fuel flexibility – Uses natural gas or liquid propane – no fuel conversion kit required.
• Extended application range – With increased capacity up to 530 MBH (single boiler) or 4240 MBH as a cascade of 8 boilers.
• Intelligent combustion system – Automatically adjusts to gas quality.
• Venting flexibility – Multiple venting options and flexibility with vent length up to 180 ft.