Fresh Air Valve With Thermostat is a passive fresh-air inlet valve with a built-in mechanical thermostat for residential and small commercial ventilation.
Fresh Air Valve With Thermostat is an energy-efficient passive ventilation solution for continuous fresh air in residential and small commercial spaces.
The valve automatically adjusts its opening based on outdoor temperature, helping provide fresh air while minimizing energy loss during colder conditions.
Designed for simple room ventilation, this thermostatic fresh-air valve combines automatic temperature response, passive operation and practical manual control.
A built-in mechanical thermostat adjusts the valve opening according to outdoor temperature without electrical connection.
The valve supports room-scale fresh-air intake for homes, offices and other spaces that need passive ventilation.
When outdoor temperature is above +10°C, the valve fully opens to increase fresh-air supply.
When outdoor temperature drops below -5°C, the valve closes to help reduce cold-air entry and energy loss.
Operation is based on thermal expansion of the thermostat element, so no wiring or power supply is required.
The valve can also be manually closed when the user needs temporary air shutoff.
| Duct Size | Extendable Duct Length | Max Allowed Air Flow | Sound Level | Application Area |
|---|---|---|---|---|
| 100mm | 250 – 500mm | 30m³/h | 20 – 35dB | 10m² |
Automatic thermostat control: The valve fully opens when outdoor temperature is above +10°C and fully closes when the temperature drops below -5°C.
Mechanical operation: The valve operates based on thermal expansion of the thermostat element, with no wiring or power supply required.
Manual closure: The product can also be manually closed when the room does not require fresh-air intake.
Application range: Suitable for apartments, residential homes, offices, meeting rooms, bathrooms, kitchens, utility spaces, storage rooms and similar passive ventilation environments.
Passive ventilation for compact spaces that need outdoor air intake without electrical wiring.
Passive fresh-air intake for bedrooms, living rooms and residential units.
Simple ventilation support for offices, meeting rooms and small commercial spaces.
Bathrooms, kitchens, storage rooms and other spaces requiring steady air renewal.
We eliminate procurement and installation risks through rigorous factory verification and straightforward B2B warranty support.
Every batch undergoes strict functional and dimensional routing tests, including thermostat mechanics, manual closure, and 100mm duct sizing alignment. We ensure that every single unit arrives at your project site fully functional and ready for flawless installation.
We stand firmly behind our manufacturing craftsmanship. In the rare event of any material defect or mechanical failure under standard project operations, KCVENTS provides a straightforward, hassle-free hardware replacement service to secure your timeline.
As a global manufacturer of HVAC and ventilation equipment, KCVENTS is dedicated to providing flexible customization services and robust long-term supply chain warranty terms for contractors, brands, and wholesalers.
We support full private labeling (OEM) and custom housing finishes. Our ODM engineering covers custom chassis modifications, specialized airflow curves, and regional electrical standards (e.g., 110V/60Hz, 24V variable frequency).
For large-scale HVAC and green building deployments, we offer structured MOQ tiers, staged shipping contracts, and agile multi-batch delivery aligned with your construction timeline. Technical submittals and parameter validation are included.
Motors enjoy an extended warranty of up to 3 to 5 years, backed by a comprehensive 1-year full system warranty. Bulk orders are eligible for a dedicated percentage of maintenance spares along with 1-on-1 remote engineering support.
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