{"product_id":"vent-axia-476312-lo-carbon-pozidry-pro-fd-piv-unit-with-heater","title":"Vent-Axia 476312 Lo-Carbon PoziDry Pro FD Positive Input Ventilation (PIV) Unit with Heater","description":"\u003ch4\u003e\u003cstrong\u003eVent-Axia 476312 Lo-Carbon PoziDry Pro FD Positive Input Ventilation (PIV) Unit with Heater\u003c\/strong\u003e\u003c\/h4\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eVent-Axia 476312 Lo-Carbon PoziDry Pro FD Positive Input Ventilation (PIV) Unit with Heater\u003c\/strong\u003e is an advanced, energy-efficient whole-house ventilation system designed to help combat condensation, reduce mould growth and improve indoor air quality. Featuring an integrated 500W heater, a ceiling diffuser with integral fire damper and intelligent SmartSense™ controls, this loft-mounted PIV unit provides a practical ventilation solution for domestic properties, social housing and residential refurbishment projects.\u003c\/p\u003e\n\n\u003cp\u003ePowered by Vent-Axia's Lo-Carbon DC motor technology, the PoziDry Pro FD delivers exceptionally quiet operation with adjustable airflow rates from 11 to 49 litres per second. Its integrated heater helps temper incoming air during colder conditions, while automatic loft temperature monitoring, G4 filtration and flexible mounting options support comfortable, efficient year-round ventilation.\u003c\/p\u003e\n\n\u003ch4\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePositive Input Ventilation (PIV):\u003c\/strong\u003e Continuously supplies fresh, filtered air to help reduce condensation, damp conditions and mould growth.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntegrated 500W Heater:\u003c\/strong\u003e Automatically warms incoming air when required to improve comfort during colder weather.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntegral Fire Damper:\u003c\/strong\u003e Supplied with a purpose-designed ceiling diffuser incorporating a fire damper.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSmartSense™ Technology:\u003c\/strong\u003e Intelligent control platform provides automatic speed selection, straightforward commissioning and operational data logging.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdjustable Airflow:\u003c\/strong\u003e Fully configurable ventilation rates between 11 and 49 l\/s to suit different property sizes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnergy-Efficient Lo-Carbon Motor:\u003c\/strong\u003e Electronically controlled DC motor technology helps minimise fan running costs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUltra-Quiet Performance:\u003c\/strong\u003e Designed for discreet continuous operation with minimal disturbance to occupants.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAutomatic Temperature Monitoring:\u003c\/strong\u003e Adjusts ventilation according to loft temperature and operating conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnergy Recovery Mode:\u003c\/strong\u003e Increases airflow when excess heat is detected in the loft to help redistribute otherwise wasted heat.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSummer Standby Mode:\u003c\/strong\u003e Reduces the introduction of excessively warm loft air when temperatures exceed the adjustable threshold.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eG4 Air Filtration:\u003c\/strong\u003e Supplied with G4 filters to help capture common airborne particles, including dust and pollen.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptional F7 Filter Upgrade:\u003c\/strong\u003e Enhanced PM2.5 filtration available for improved fine-particle removal.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlexible Loft Mounting:\u003c\/strong\u003e Supplied with anti-vibration joist mounting legs and a hanging kit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSmart Air™ Diffuser Technology:\u003c\/strong\u003e Designed to reduce air supply noise while improving airflow performance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRadon Operating Mode:\u003c\/strong\u003e Continuous ventilation setting available for properties requiring additional radon management measures.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIPX2 Rated:\u003c\/strong\u003e Suitable for protected indoor installation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e5-Year Warranty:\u003c\/strong\u003e Manufacturer-backed warranty for long-term peace of mind.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003e\u003cstrong\u003eWhole-House Condensation and Mould Control\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eThe Vent-Axia PoziDry Pro FD uses positive input ventilation technology to address excessive indoor moisture, condensation and poor air circulation.\u003c\/p\u003e\n\n\u003cp\u003eInstalled within the loft, the unit draws in air, filters it and gently distributes it throughout the dwelling via a centrally positioned ceiling diffuser. The continuous supply of filtered air helps dilute and displace moisture-laden indoor air, encouraging stale air to escape through existing ventilation openings and natural leakage paths.\u003c\/p\u003e\n\n\u003cp\u003eBy improving air circulation and reducing excessive humidity, the system helps create a fresher, more comfortable living environment while reducing the conditions that encourage mould growth.\u003c\/p\u003e\n\n\u003ch4\u003e\u003cstrong\u003eIntegrated 500W Heater for Improved Comfort\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eUnlike standard non-heated PIV models, the \u003cstrong\u003eVent-Axia 476312 PoziDry Pro FD\u003c\/strong\u003e includes an integrated 500W heater designed to temper incoming air during colder weather.\u003c\/p\u003e\n\n\u003cp\u003eThe heater operates automatically when required, helping reduce the sensation of cold draughts associated with introducing fresh loft air into the home.\u003c\/p\u003e\n\n\u003cp\u003eSmartSense™ controls allow the heater activation settings to be adjusted to suit property requirements and occupant preferences, supporting comfortable ventilation throughout the colder months.\u003c\/p\u003e\n\n\u003ch4\u003e\u003cstrong\u003eCeiling Diffuser with Integral Fire Damper\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eThe PoziDry Pro FD is supplied with a purpose-designed ceiling diffuser incorporating an integral fire damper. This makes the unit suitable for installations where a fire-damper-equipped diffuser is specified, subject to the applicable fire safety design and installation requirements.\u003c\/p\u003e\n\n\u003cp\u003eThe discreet white circular diffuser features a low-profile design that blends into residential interiors. Its four-point contact fixing arrangement supports quick installation, while the diffuser design helps maintain a neat finish against uneven ceiling surfaces.\u003c\/p\u003e\n\n\u003cp\u003eSmart Air™ technology is designed to reduce air supply noise and improve airflow performance by up to 10%. Clip-in blanking plates also allow installers to control the direction of air distribution within the property.\u003c\/p\u003e\n\n\u003ch4\u003e\u003cstrong\u003eSmartSense™ Intelligent Control and Data Logging\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eThe integrated SmartSense™ system simplifies installation and ongoing ventilation management by automatically selecting appropriate airflow settings based on the number of bedrooms within the property.\u003c\/p\u003e\n\n\u003cp\u003eInstallers can configure Trickle and Energy Recovery speeds, manually adjust airflow where necessary and lock the control interface to prevent unauthorised changes.\u003c\/p\u003e\n\n\u003cp\u003eThe system also records useful operational information, including:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eTotal operating time at different fan speeds.\u003c\/li\u003e\n\u003cli\u003eNumber of days the ventilation unit has been powered.\u003c\/li\u003e\n\u003cli\u003eDuration of integrated heater operation.\u003c\/li\u003e\n\u003cli\u003eEnergy consumption information associated with heater activity.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eThis information supports maintenance, performance monitoring and effective management of residential ventilation systems.\u003c\/p\u003e\n\n\u003ch4\u003e\u003cstrong\u003eAutomatic Temperature Control and Energy Recovery\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eThe Vent-Axia 476312 incorporates intelligent loft temperature monitoring to optimise ventilation performance and household comfort throughout the year.\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrickle Mode:\u003c\/strong\u003e Maintains continuous, low-noise ventilation during normal operating conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnergy Recovery Mode:\u003c\/strong\u003e Increases airflow when excess heat is detected in the loft, helping redistribute heat that might otherwise escape through the roof.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSummer Standby Mode:\u003c\/strong\u003e Activates when loft temperatures exceed the adjustable 27°C threshold, helping prevent excessively warm air from entering the home.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeater Operation:\u003c\/strong\u003e Uses the integrated 500W heater to temper incoming air during colder conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRadon Mode:\u003c\/strong\u003e Provides continuous airflow for properties where additional radon management ventilation is required.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003e\u003cstrong\u003eEnergy-Efficient and Ultra-Quiet Motor\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eThe PoziDry Pro FD features an electronically controlled Lo-Carbon DC motor engineered for quiet, efficient and reliable continuous operation.\u003c\/p\u003e\n\n\u003cp\u003eThe motor incorporates long-life ball bearings and overload protection, while anti-vibration mounting components help minimise noise transmission through the building structure.\u003c\/p\u003e\n\n\u003cp\u003eDesigned for ambient operating temperatures between -25°C and +40°C, the unit provides dependable ventilation performance across a wide range of loft conditions.\u003c\/p\u003e\n\n\u003ch4\u003e\u003cstrong\u003eG4 Filtration with Optional F7 Upgrade\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eThe Vent-Axia PoziDry Pro FD is supplied with G4 filters designed to remove common airborne particles, including dust and pollen, before incoming air is distributed throughout the property.\u003c\/p\u003e\n\n\u003cp\u003eFor enhanced filtration, optional F7 filters are available to provide improved capture of PM2.5 fine particles, including certain smoke particles, diesel particulates and other airborne pollutants.\u003c\/p\u003e\n\n\u003cp\u003eThe replaceable filtration system supports straightforward maintenance and helps maintain effective air distribution.\u003c\/p\u003e\n\n\u003ch4\u003e\u003cstrong\u003eFlexible Loft Installation\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eThe Vent-Axia 476312 is designed for straightforward installation in domestic loft spaces, with both high-sided anti-vibration mounting legs and a hanging kit supplied as standard.\u003c\/p\u003e\n\n\u003cp\u003eThe mounting legs accommodate joist spacings between 300mm and 650mm, while clip-and-fit connections simplify assembly. An integrated carrying handle allows the unit to be transported more easily through loft hatches.\u003c\/p\u003e\n\n\u003cp\u003eThe supplied fire-damper-equipped diffuser is typically positioned above the stairwell, on a landing or within a central hallway to promote effective whole-house air circulation.\u003c\/p\u003e\n\n\u003ch4\u003e\u003cstrong\u003eTechnical Specifications\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Vent-Axia\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Code:\u003c\/strong\u003e 476312\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Range:\u003c\/strong\u003e Lo-Carbon PoziDry Pro\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e PoziDry Pro FD with Heater\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Positive Input Ventilation Unit with Heater\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVentilation Type:\u003c\/strong\u003e Positive Input Ventilation (PIV)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstallation Location:\u003c\/strong\u003e Loft Mounted\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAirflow Range:\u003c\/strong\u003e 11-49 l\/s\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntegrated Heater:\u003c\/strong\u003e 500W\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFire Damper:\u003c\/strong\u003e Integral to Ceiling Diffuser\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMotor Type:\u003c\/strong\u003e Electronically Controlled Lo-Carbon DC Motor\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eControl Technology:\u003c\/strong\u003e SmartSense™\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperating Modes:\u003c\/strong\u003e Trickle, Energy Recovery, Summer Standby and Radon\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature Monitoring:\u003c\/strong\u003e Automatic Loft Temperature Sensor\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSummer Standby Threshold:\u003c\/strong\u003e 27°C (Adjustable)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandard Filtration:\u003c\/strong\u003e G4 (PM10)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptional Filtration:\u003c\/strong\u003e F7 (PM2.5)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIP Rating:\u003c\/strong\u003e IPX2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting Options:\u003c\/strong\u003e Anti-Vibration Joist Legs and Hanging Kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Joist Spacing:\u003c\/strong\u003e 300-650mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCeiling Diffuser:\u003c\/strong\u003e White Circular Diffuser with Integral Fire Damper\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMotor Protection:\u003c\/strong\u003e Overload Protection\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMotor Bearings:\u003c\/strong\u003e Long-Life Ball Bearings\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAmbient Operating Temperature:\u003c\/strong\u003e -25°C to +40°C\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eData Logging:\u003c\/strong\u003e Running Time, Fan Speeds, Days Powered and Heater Activity\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrimary Application:\u003c\/strong\u003e Domestic and Social Housing Ventilation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 5 Years\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003e\u003cstrong\u003eApplications\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eWhole-house positive input ventilation systems\u003c\/li\u003e\n\u003cli\u003eDomestic condensation and mould prevention\u003c\/li\u003e\n\u003cli\u003eSocial housing ventilation upgrades\u003c\/li\u003e\n\u003cli\u003eResidential refurbishment and renovation projects\u003c\/li\u003e\n\u003cli\u003eLoft-mounted ventilation installations requiring a fire damper\u003c\/li\u003e\n\u003cli\u003eProperties requiring tempered incoming ventilation air\u003c\/li\u003e\n\u003cli\u003eEnergy-efficient continuous home ventilation\u003c\/li\u003e\n\u003cli\u003eIndoor air quality and moisture management\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003e\u003cstrong\u003eAdditional Installation Information\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eSuitable internal airflow paths are important for effective whole-house ventilation. Where internal doors do not provide a 10mm undercut, an optional air replacement grille set may be required.\u003c\/p\u003e\n\n\u003cp\u003eThe optional two-piece telescopic grille set fits on either side of an internal door and is suitable for a minimum fixing thickness of 30mm. Grille dimensions are 454 x 90mm.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e The F7 filtration upgrade and air replacement grille set are optional accessories. Fire damper installation and suitability must be assessed against the property's fire safety requirements and the manufacturer's instructions.\u003c\/p\u003e\n\n\u003ch4\u003e\u003cstrong\u003eData Sheet\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/asset.eezybridge.com\/nc\/ba7b9546-29dd-40c4-87a7-885627281b87\/VA_LC_Pozidry_Pro_Catalogue.pdf\" title=\"Vent-Axia 476312 Lo-Carbon PoziDry Pro FD with Heater Data Sheet\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cstrong\u003eClick Here for Data Sheet\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e\n\n\u003ch4\u003e\u003cstrong\u003eInstallation Guide\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/asset.eezybridge.com\/nc\/ba7b9546-29dd-40c4-87a7-885627281b87\/476705.pdf\" title=\"Vent-Axia 476312 PoziDry Pro FD with Heater Installation Guide\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cstrong\u003eClick Here for Installation Guide\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"Vent-Axia","offers":[{"title":"Default Title","offer_id":59042166276477,"sku":"476312","price":486.3,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0582\/1693\/9618\/files\/lo-carbon_pozidry_pro_0_8d284f45-5409-4796-aa90-f90077759160.webp?v=1793857573","url":"https:\/\/b2belectrical.com\/products\/vent-axia-476312-lo-carbon-pozidry-pro-fd-piv-unit-with-heater","provider":"B2Belectrical.com","version":"1.0","type":"link"}