New
Automatic.Solid fuel.Finally.
A fully automatic solid fuel damper, listed to UL 378, with an audible and visual alarm for NFPA 211. Pairs with WBC, WBC DUO, and SFDC.
Meet the damper
Ventilation systems for combustion and exhaust
Every building breathes. We control how.
X-VENTISO draft inducers, controls, and makeup air work as one system, so every combustion and exhaust appliance in the building vents the way it should. Code Compliant, Every Time.1
The pressure problem
Tight buildings. Powerful exhaust. Appliances that need air.
Modern construction seals the building envelope tighter every year. A single 400 CFM exhaust appliance can pull a tight building envelope negative by roughly 7 Pa. An open fireplace can begin to spill at 3 to 4 Pa.
When the building pulls harder than the chimney lifts, the chimney loses.
- 400 CFM exhaust, tight building envelope
- ≈ 7 Pa
- Open fireplace begins to spill
- 3 to 4 Pa
The fix: mechanical draft, with makeup air to match.
Typical values. Actual depressurization depends on building size, tightness, and exhaust flow.
Systems, not parts
One system. Three promises.
- 01
Quiet by design
Draft inducers built for pressure, WSPRDraft flue silencers tested to ISO 7235, and vibration isolation that keeps the fan from talking to the structure.
- 02
No field wiring
Factory-wired from fan to controller, with a service disconnect at the fan. Plug it in, connect the Molex, done.
- 03
Code compliant, every time.1
Proven draft, interlocks, and alarms ship in the box with every controller package. Nothing to add, nothing to forget.
The lineup
Product families
XV Series
Draft inducers
XV150 · XV250 · XV350. Built for pressure, listed for gas, solid fuel, and grease.
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Meridian
Self-modulating control
Meridian and Meridian DUO. Measures the flue and the space it serves. Nothing to dial in.
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Controlled Power
Draft control
WBC and WBC DUO. Proven draft and a complete code package in every box.
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VMASS
Makeup air
25 to 400 CFM, sensing its own zone. Replaces the air your exhaust removes.
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Silencers · Dampers · Dampeners
WSPRDraft flue silencers, gas and solid fuel dampers, vibration dampeners.
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Flagship
Meridian.Nothing to dial in.
Meridian measures the flue and the space it serves, modulating the draft inducer continuously with XV-FLUX. Fully automatic, no commissioning required. Two flues? Meridian DUO handles each one independently from a single controller.
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Bring us the project. We'll find the yes.
Listed to UL 378 · UL 705 · UL 705 Supplement SC · CSA B255. CAD, spec sheets, and BACnet/Modbus integration in Spec & Support.