- residential
- Ventilation Accessories
- Pressure Switches
- Greystone AFS Pressure Switches
Greystone AFS Pressure Switches
The air pressure switch is a general purpose airflow proving switch designed for HVAC and Energy Management applications. It may be used to sense positive, negative, or differential air pressure.
The plated housing contains a diaphragm, a calibration spring and a snap-acting SPDT switch.
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residential
- AirFlow Boosting
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Grilles & Registers
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- Bar Linear Grilles
- Grilles - Rectangular
- Grilles - Round
- Baseboard Registers
- Curved Blade Grilles
- Decorative Grilles
- Filter Grilles
- Perforated Flat Custom Grilles
- Perforated Flanged Custom Grilles
- Plastic Grilles & Registers
- Round Perforated Flat Grilles
- Slot Diffusers & Returns
- Spiral Duct Diffusers
- T-Bar Plastic Supply Diffusers
- T-Bar Metal Supply Diffusers
- T-Bar Return Grilles
- Wood Grilles
- Louvers
- Dampers
- Access Doors
- Air Handlers
- Attic Fans & Vents
- Bathroom Ventilation
- Booster Pumps
- Crawlspace-Radon Ventilation
- COVID-19 Mitigation
- Condensate Pumps
- Dryer-boosting
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Fans
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- Inline Fans
- Inline EC Fans
- AV Closet Cooling
- Basement Ventilation
- Ceiling Mounted Bath Fans
- Crawlspace Ventilation
- Destratification Fans
- Draft Inducers and Chimney Fans
- Dryer Booster Fans
- Explosion Proof Fans
- Exterior Exhaust Fans
- Garage Ventilation
- Hydroponics Fans
- Propeller Fans Direct Drive
- Radon Fans
- Room-to-Room and Register Boosters
- Rotary General Purpose Fans
- Timers
- Exhaust Fan Controls
- Filter Boxes
- Filters & HEPA
- HRVs and ERVs
- Floor Heating
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Indoor Air Quality - IAQ
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- HEPA Filtration
- Inline Filter Boxes
- Medium Efficiency Air Filters
- High Efficiency Air Filters
- Carbon Air Filters
- Air Exchange Ventilators
- Air Inlets & Fresh Air Kits
- Air Purifiers
- Airflow Regulators
- Active Dampness Control
- Dehumidifiers
- Duct Heaters - Electric
- Energy Recovery ERVs
- Garage Ventilation
- Humidifiers
- Heat Recovery HRVs
- Pressure (Air) Balancing
- Radon Fans
- Supply Air Ventilators
- Thermostats
- UVC Lights and Systems
- Zoned Exhaust Systems
- Kitchen Exhaust
- Makeup Air
- Mini-Splits & Heat Pumps
- Pumps & Instant Hot Water
- Solar Air Heating
- Tankless & Flue Venting
- Thermostats and Fan Controls
- Title 24 Products
- Whole House Fans
- Wildfire Smoke Control
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Ventilation Accessories
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- Access Doors
- Air Dampers
- Air Inlets & Fresh Air Kits
- ASHRAE 62.2 Controls
- Attic Vents
- Current Switches
- Discharge Caps - Wall
- Discharge Caps - Roof
- Dryer Exhaust Caps
- Dryer Vent Boxes & Couplings
- Duct and Duct Accessories
- Exhaust Fan Controls
- Grilles - Rectangular
- Grilles - Round
- Louvers
- Occupancy Switches
- Pressure Switches
- Relays & Misc Controls
- Silencers and Backdraft Dampers
- Soffit Vents
- Spare Parts
- Timers
- Tools For Sheet Metal
- Y Fittings and Transitions
- Zoning and Zone Dampers
why buy from us?
We're engineers passionate about home ventilation and serious about customer service – so you can count on us for carefully-selected equipment and expert advice to ensure your project is a success from specification to installation.
Your call is answered by qualified people who will gladly discuss your project in detail, advise you professionally and never sell you inappropriate products.
