Viessmann 7722774 Vitodens 100-W B1HE-150 150,000 BTU High Efficiency Hydronic Boiler

Viessmann 7722774 Vitodens 100‑W B1HE‑150 | 150,000 BTU High‑Efficiency Wall‑Hung Condensing Hydronic Boiler (95% AFUE)

The Viessmann Vitodens 100‑W B1HE‑150 is a high‑efficiency, wall‑hung condensing boiler designed for reliable hydronic space heating. With a 95% AFUE, a wide 10:1 turndown ratio, and Viessmann’s durable Inox‑Radial stainless steel heat exchanger, this 150,000 BTU model delivers steady comfort while helping lower fuel use. Built‑in WiFi brings the ViCare app to your phone for simple control and scheduling.

• Brand: Viessmann
• MPN: 7722774 (Vitodens 100‑W B1HE‑150, Heating‑Only)
• Type: Wall‑Mounted, Gas‑Fired Condensing Heating‑Only Boiler
• Fuel: Natural Gas or LP (field convertible; software change, no mechanical adjustments)
• Input (NG): 15.5–150 MBH
• Input (LP): 14–150 MBH
• DOE Heating Capacity: 141 MBH
• Net AHRI (Water): 123 MBH
• AFUE: 95%
• Turndown Ratio: 10:1
• Max Operating Pressure: 60 psig
• NOx Emissions: < 20 ppm (at 3% O₂)
• Altitude Rating: Up to 10,000 ft without input de‑rate (software setting)
• Noise Level: ~51 dB (full load); ~31 dB (part load) @ 1 m
• Venting (Coax): 80/125 mm up to 33 ft equiv.; 100/150 (or 110/160) up to 43 ft equiv.
• Venting (Two‑Pipe): 3" up to 98 ft equiv.; 4" up to 148 ft equiv.
• Clearances: Zero clearance to combustibles; front service access
• Heating Connections: 1" NPT supply/return
• DHW Tank Piping (for indirect): 1" NPT supply/return (use with indirect tank)
• Gas Connection: 3/4" NPT (male)
• Dimensions (W × D × H): 17.75" × 22" × 34.5" (450 × 556 × 875 mm)
• Included: 30 psi boiler PRV, installation fittings/hardware, outdoor temperature sensor
• Warranty: Limited lifetime (residential applications)

High Efficiency, Lower Fuel Bills

At 95% AFUE and with a generous 10:1 turndown, the B1HE‑150 modulates smoothly to match real‑world demand—cutting cycling, improving comfort, and reducing gas consumption compared to older non‑condensing boilers.

Heating‑Only, Ideal For Indirect DHW

Pair the B1HE‑150 with a separate indirect water heater for robust domestic hot water. The boiler provides dedicated 1" supply/return connections for a tank coil and includes an outdoor sensor for easy outdoor‑reset control.

Stainless Steel Inox‑Radial Heat Exchanger

Viessmann’s Inox‑Radial stainless steel heat exchanger and MatriX‑Plus burner are engineered to resist corrosion in condensing operation, helping the unit maintain efficiency year after year.

Compact, Quiet, Easy To Service

A slim 17.75"‑wide cabinet, front‑access components, and zero clearance to combustibles simplify installations in tight mechanical rooms, closets, or utility spaces. Sound levels around 51 dB at full fire help keep homes quiet.

Flexible Fuel & Venting Options

Convert between natural gas and propane via software settings. Choose coaxial (80/125 or 100/150) or two‑pipe (3" or 4") venting, with equivalent lengths up to 148 ft (4" two‑pipe) to fit challenging layouts. Rated for altitudes to 10,000 ft without derating.

Built‑In WiFi & ViCare App

Connect the boiler to your network and use ViCare for remote temperature adjustments, schedules, and helpful notifications—from anywhere.