Pennco Silver 15B-235K 9 Zone 235,000 BTU Residential Cast Iron Natural Gas Boiler
- SKU #: PEN15B235K
- MPN #: 15B-235K
MSRP:
$5,221.00
$4,855.24
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Make The Switch To Efficient, Quiet Heat With The Viessmann Vitodens 100‑W B1HE‑85 85,000 BTU Wall‑Hung Condensing Boiler
ncy Wall‑Hung Condensing Hydronic BoilerLooking for reliable heat without taking up floor space? The Vitodens 100‑W B1HE‑85 is a heating‑only, wall‑hung gas condensing boiler that’s efficient, quiet, and easy to live with. It runs at 95% AFUE, modulates from 8.5–85 MBH to match demand, and uses an Inox‑Radial stainless steel heat exchanger to help keep performance high season after season. Built‑in WiFi works with ViCare for simple control from your phone.
- Brand: Pennco
- MPN: 15B‑235K (15B Series K)
- Type: Gas‑Fired, Cast Iron Non‑Condensing Hot Water Boiler
- Fuel: Natural Gas (LP conversion kit available)
- Input: 235,000 BTU/h
- DOE Heating Capacity: 197,000 BTU/h
- Net AHRI (Water): 171,000 BTU/h
- AFUE: 84%
- Ignition: Intermittent Electronic with factory vent damper
- Venting: Built‑in draft diverter; 7" flue to a lined masonry or metal chimney
- Water Return/Supply: 1‑1/4" NPT
- Gas Inlet: 1" NPT
- Water Content: 4.6 gallons
- Electrical: 120V, 60 Hz; <12 A (15 A circuit recommended)
- Dimensions (W × H × D): 27‑1/2" × 32‑1/8" × 24‑1/8"
- Warranty: 20‑Year Limited heat exchanger (residential; see terms)
High Efficiency, Lower Fuel Bills
At 95% AFUE with a 10:1 turndown ratio, the B1HE‑85 matches output to demand to reduce cycling and help cut gas costs.
Right‑Sized For Small To Mid‑Size Homes
The 8.5–85 MBH input range is a great fit for many baseboard and radiant systems. It runs gently on mild days and ramps up when winter really hits—keeping rooms comfortable without oversizing.
Stainless Steel Heat Exchanger
The Inox‑Radial stainless‑steel heat exchanger is purpose‑built for condensing operation—resisting corrosion and supporting long service life.
Compact, Quiet, Easy To Service
A slim, 17.7"‑wide cabinet and front‑access components make tight installs and annual service straightforward. Sound levels are designed to be pleasantly quiet in typical mechanical spaces.
Flexible Venting For Retrofits
Choose concentric 80/125 mm (or 100/150 mm) or 2"/3"/4" two‑pipe venting to handle longer runs and tricky layouts—ideal for replacements where routing is limited.
Smartphone Control With ViCare
Built‑in WiFi connects to the ViCare app so you can view temperatures, set schedules, and receive alerts right from your phone.