Best Envirovent Loft Mounted Positive Input Ventilation Piv Unit of 2026

Last updated on 17/04/2026

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Dryzone Positive Input & Passive Ventilation Kit for Condensation & Mould Control | Loft Cube PIV Unit with Heater | 4 Passive Telescopic Wall Vents for Multiple Rooms

Dryzone Positive Input & Passive Ventilation Kit for Condensation & Mould Control | Loft Cube PIV Unit with Heater | 4 Passive Telescopic Wall Vents for Multiple Rooms

Improves indoor air quality.
Reduces condensation and mould.
Quiet, low maintenance design.

Main Highlights

Dryzone PIV & Passive Vent Bundle for 1 to 5 bedroom homes | Improve indoor air quality and help resolve everyday condensation & mould problems with this complete kit.
Loft Cube PIV Kit for the Whole Home | Supplies fresh, filtered & tempered air through a ceiling diffuser, reducing surface condensation and preventing mould.
Telescopic Passive Wall Vents for 4 Bedrooms/Living Rooms | Provides background trickle ventilation for busy rooms. Silent, low maintenance & supports natural airflow.
Quiet, Always-On Background Ventilation | The Passive Wall Vent works together with the flow of fresh air provided by Positive Input Ventilation to ensure a fresh and comfortable living environment.
Ideal for Landlords, Housing Teams and Homeowners | A straightforward, evidence based way to monitor humidity trends and tackle recurring condensation & black mould.

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Dryzone Positive Input & Passive Ventilation Kit for Condensation & Mould Control | Loft Cube PIV Unit with Heater | 4 Passive Telescopic Wall Vents for Multiple Rooms

Improves indoor air quality.
Reduces condensation and mould.
Quiet, low maintenance design.

Main Highlights

Dryzone PIV & Passive Vent Bundle for 1 to 5 bedroom homes | Improve indoor air quality and help resolve everyday condensation & mould problems with this complete kit.
Loft Cube PIV Kit for the Whole Home | Supplies fresh, filtered & tempered air through a ceiling diffuser, reducing surface condensation and preventing mould.
Telescopic Passive Wall Vents for 4 Bedrooms/Living Rooms | Provides background trickle ventilation for busy rooms. Silent, low maintenance & supports natural airflow.
Quiet, Always-On Background Ventilation | The Passive Wall Vent works together with the flow of fresh air provided by Positive Input Ventilation to ensure a fresh and comfortable living environment.
Ideal for Landlords, Housing Teams and Homeowners | A straightforward, evidence based way to monitor humidity trends and tackle recurring condensation & black mould.

Value for Money

Airtec Air+ Wall PIV Positive Input Ventilation Unit

Airtec Air+ Wall PIV Positive Input Ventilation Unit

Ultraquiet operation with DC motor.
Energy efficient and cost-effective.
Versatile with adjustable airflow.

Main Highlights

7 Year product guarantee
Energy efficient - consumes as little as 4 Watts. Running cost as low as 9p per week.
Extremely compact - able to be fully hidden behind 200x200mm decorative boxing
DC motor and anti-vibration EPP body for ultra quiet operation
Fully adjustable airflow up to 30l/s or 4 pre-set speeds for ease of installation with pre-heater facility as standard

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Airtec Air+ Wall PIV Positive Input Ventilation Unit

Ultraquiet operation with DC motor.
Energy efficient and cost-effective.
Versatile with adjustable airflow.

Main Highlights

7 Year product guarantee
Energy efficient - consumes as little as 4 Watts. Running cost as low as 9p per week.
Extremely compact - able to be fully hidden behind 200x200mm decorative boxing
DC motor and anti-vibration EPP body for ultra quiet operation
Fully adjustable airflow up to 30l/s or 4 pre-set speeds for ease of installation with pre-heater facility as standard

Dryzone PIV Unit with HEATER | Quiet Loft Whole-House Positive Input Ventilation System for 1-5 Bedrooms | Filters Air to Stop Condensation & Damp, Prevent Mould | Complete Home Ventilation Kit

Dryzone PIV Unit with HEATER | Quiet Loft Whole-House Positive Input Ventilation System for 1-5 Bedrooms | Filters Air to Stop Condensation & Damp, Prevent Mould | Complete Home Ventilation Kit

Fights damp and condensation effectively.
Maintains comfort in all seasons.
Easy installation for quick setup.

Main Highlights

BEAT DAMP, CONDENSATION & MOULD: Quiet positive input ventilation (PIV) unit introduces filtered loft air into living areas, forcing out humid air and allergens to stop condensation and mould growth.
YEAR-ROUND COMFORT: This PIV system with heater tempers frigid loft air when it falls below 10 °C, helping to maintain comfortable draught-free ventilation that helps keep walls damp-free in winter.
FITS MOST HOMES: Four selectable fan speeds on the PIV fan unit serve 1-5 bedroom properties, delivering up to 49 L/s airflow to help improve air circulation in the home and help reduce condensation.
FAST DIY INSTALL: Includes a loft cube PIV, 1 m of 200 mm flexible duct, white 200 mm ceiling diffuser and fixings, for easy mould control system installation. No need for redecoration.
WHISPER-QUIET & RELIABLE: Your new ventilation unit for condensation prevention runs near-silently (25 dB(A) at a 1 m distance) and carries a three-year warranty for peace of mind.

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Dryzone PIV Unit with HEATER | Quiet Loft Whole-House Positive Input Ventilation System for 1-5 Bedrooms | Filters Air to Stop Condensation & Damp, Prevent Mould | Complete Home Ventilation Kit

Fights damp and condensation effectively.
Maintains comfort in all seasons.
Easy installation for quick setup.

Main Highlights

BEAT DAMP, CONDENSATION & MOULD: Quiet positive input ventilation (PIV) unit introduces filtered loft air into living areas, forcing out humid air and allergens to stop condensation and mould growth.
YEAR-ROUND COMFORT: This PIV system with heater tempers frigid loft air when it falls below 10 °C, helping to maintain comfortable draught-free ventilation that helps keep walls damp-free in winter.
FITS MOST HOMES: Four selectable fan speeds on the PIV fan unit serve 1-5 bedroom properties, delivering up to 49 L/s airflow to help improve air circulation in the home and help reduce condensation.
FAST DIY INSTALL: Includes a loft cube PIV, 1 m of 200 mm flexible duct, white 200 mm ceiling diffuser and fixings, for easy mould control system installation. No need for redecoration.
WHISPER-QUIET & RELIABLE: Your new ventilation unit for condensation prevention runs near-silently (25 dB(A) at a 1 m distance) and carries a three-year warranty for peace of mind.

Dryzone Positive Input & Passive Ventilation Kit for Condensation & Mould Control | Loft Cube PIV Unit with Heater | 3 Passive Telescopic Wall Vents for Multiple Rooms

Dryzone Positive Input & Passive Ventilation Kit for Condensation & Mould Control | Loft Cube PIV Unit with Heater | 3 Passive Telescopic Wall Vents for Multiple Rooms

Improves indoor air quality.
Reduces condensation and mould.
Whole home air refresh.

Main Highlights

Dryzone PIV & Passive Vent Bundle for 1 to 5 bedroom homes | Improve indoor air quality and help resolve everyday condensation & mould problems with this complete kit.
Loft Cube PIV Kit for the Whole Home | Supplies fresh, filtered & tempered air through a ceiling diffuser, reducing surface condensation and preventing mould.
Telescopic Passive Wall Vents for 3 Bedrooms/Living Rooms | Provides background trickle ventilation for busy rooms. Silent, low maintenance & supports natural airflow.
Quiet, Always-On Background Ventilation | The Passive Wall Vent works together with the flow of fresh air provided by Positive Input Ventilation to ensure a fresh and comfortable living environment.
Ideal for Landlords, Housing Teams and Homeowners | A straightforward, evidence based way to monitor humidity trends and tackle recurring condensation & black mould.

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Dryzone Positive Input & Passive Ventilation Kit for Condensation & Mould Control | Loft Cube PIV Unit with Heater | 3 Passive Telescopic Wall Vents for Multiple Rooms

Improves indoor air quality.
Reduces condensation and mould.
Whole home air refresh.

Main Highlights

Dryzone PIV & Passive Vent Bundle for 1 to 5 bedroom homes | Improve indoor air quality and help resolve everyday condensation & mould problems with this complete kit.
Loft Cube PIV Kit for the Whole Home | Supplies fresh, filtered & tempered air through a ceiling diffuser, reducing surface condensation and preventing mould.
Telescopic Passive Wall Vents for 3 Bedrooms/Living Rooms | Provides background trickle ventilation for busy rooms. Silent, low maintenance & supports natural airflow.
Quiet, Always-On Background Ventilation | The Passive Wall Vent works together with the flow of fresh air provided by Positive Input Ventilation to ensure a fresh and comfortable living environment.
Ideal for Landlords, Housing Teams and Homeowners | A straightforward, evidence based way to monitor humidity trends and tackle recurring condensation & black mould.

Kair Kalahari PIV Unit - ECO Positive Input Ventilation System, Loft PIV Ventilation System for Condensation Control (Standard)

Kair Kalahari PIV Unit - ECO Positive Input Ventilation System, Loft PIV Ventilation System for Condensation Control (Standard)

Effective condensation control.
Discreet ceiling design.
Quiet operational noise.

Main Highlights

Whole-house condensation control from a single, energy-efficient PIV unit
Positive Input Ventilation (PIV) continuously supplies dry, filtered air to reduce moisture levels
Loft-mounted PIV ventilation system keeps the unit hidden and living spaces clutter-free
Very low noise operation due to installation within the loft cavity
Discreet ceiling diffuser delivers airflow evenly throughout the property

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Kair Kalahari PIV Unit - ECO Positive Input Ventilation System, Loft PIV Ventilation System for Condensation Control (Standard)

Effective condensation control.
Discreet ceiling design.
Quiet operational noise.

Main Highlights

Whole-house condensation control from a single, energy-efficient PIV unit
Positive Input Ventilation (PIV) continuously supplies dry, filtered air to reduce moisture levels
Loft-mounted PIV ventilation system keeps the unit hidden and living spaces clutter-free
Very low noise operation due to installation within the loft cavity
Discreet ceiling diffuser delivers airflow evenly throughout the property

LV-EVL-H Home Loft PIV Envirovent Unit with Heater, Energy-efficient Ventilation System, Heat Recovery

LV-EVL-H Home Loft PIV Envirovent Unit with Heater, Energy-efficient Ventilation System, Heat Recovery

Effective fresh air circulation.
Reduces dampness and condensation.
Whisper-quiet for home comfort.

Main Highlights

VENTILATION SYSTEM: Positive Input Ventilation (PIV) unit designed for loft installation, effectively circulates fresh air throughout the home whilst removing stale air
MOISTURE CONTROL: Advanced system reduces condensation and dampness by extracting excess moisture from your living spaces
HEAT RECOVERY: Integrated heating element and heat recovery technology helps maintain comfortable temperatures while maximising energy efficiency
QUIET OPERATION: Engineered for whisper-quiet performance, ensuring minimal disruption to your home environment
INSTALLATION: Compact unit measures approximately 30 cm x 30 cm, designed for straightforward loft mounting with included fixtures

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LV-EVL-H Home Loft PIV Envirovent Unit with Heater, Energy-efficient Ventilation System, Heat Recovery

Effective fresh air circulation.
Reduces dampness and condensation.
Whisper-quiet for home comfort.

Main Highlights

VENTILATION SYSTEM: Positive Input Ventilation (PIV) unit designed for loft installation, effectively circulates fresh air throughout the home whilst removing stale air
MOISTURE CONTROL: Advanced system reduces condensation and dampness by extracting excess moisture from your living spaces
HEAT RECOVERY: Integrated heating element and heat recovery technology helps maintain comfortable temperatures while maximising energy efficiency
QUIET OPERATION: Engineered for whisper-quiet performance, ensuring minimal disruption to your home environment
INSTALLATION: Compact unit measures approximately 30 cm x 30 cm, designed for straightforward loft mounting with included fixtures

Brookvent Airplus Positive Input Ventilation (PIV) - For Condensation and Mould Control

Brookvent Airplus Positive Input Ventilation (PIV) - For Condensation and Mould Control

Reduces condensation and moulds.
Energy-saving with loft heat.
Quiet and efficient operation.

Main Highlights

Reduces condensation which is the cause of issues like streaming windows, surface condensation, musty smells, dampness and moulds by introducing fresh, clean and filtered air into the dwelling so to dilute, displace and replace the internal stale, contaminated, humid air
Energy savings, the airplus system utilises otherwise unused energy in the loft from solar gain and heat loss from the home. This energy gain is significantly more than the energy used by the unit’s motor
Improved heat distribution warm air naturally rises to the ceiling. The difference between the ground level and air near the ceiling can be as high as 7oC the airplus PIV system pressurizes the dwelling allowing for improved temperature distribution.
Health benefits stale, humid contaminated air trapped in our homes leads among others to mould growth. Mould naturally releases spores into the air which will be inhaled by the inhabitants leading to respiratory problems such as asthma and allergies. The airplus system pressurize the apartment to dilute, displace and replace stale and therefore significantly reduce mould growth.
Minimum maintenance due to a very large filter area (over 0,5 sqm) the unit can provide even up to 5-10 years filter life depending on operating speed and air quality. Easy access to the filter for cleaning and replacements.
Quiet and efficient operation due to the use of a modern low watt EC fan with integrated thermal protection, mounted on sealed for life ball bearings and antivibration support.
Tested to the latest standards: Units are tested in the TÜV recognized laboratory, BRE labs (UK) and produced in accordance with LVD and EMC regulation meaning accurate, up to date information on electrical safety, performance and noise level that can be relied upon.
Easy installation with fixing eyelets as part of the fan body. Suitable for floor or suspended installation (optional).

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Brookvent Airplus Positive Input Ventilation (PIV) - For Condensation and Mould Control

Reduces condensation and moulds.
Energy-saving with loft heat.
Quiet and efficient operation.

Main Highlights

Reduces condensation which is the cause of issues like streaming windows, surface condensation, musty smells, dampness and moulds by introducing fresh, clean and filtered air into the dwelling so to dilute, displace and replace the internal stale, contaminated, humid air
Energy savings, the airplus system utilises otherwise unused energy in the loft from solar gain and heat loss from the home. This energy gain is significantly more than the energy used by the unit’s motor
Improved heat distribution warm air naturally rises to the ceiling. The difference between the ground level and air near the ceiling can be as high as 7oC the airplus PIV system pressurizes the dwelling allowing for improved temperature distribution.
Health benefits stale, humid contaminated air trapped in our homes leads among others to mould growth. Mould naturally releases spores into the air which will be inhaled by the inhabitants leading to respiratory problems such as asthma and allergies. The airplus system pressurize the apartment to dilute, displace and replace stale and therefore significantly reduce mould growth.
Minimum maintenance due to a very large filter area (over 0,5 sqm) the unit can provide even up to 5-10 years filter life depending on operating speed and air quality. Easy access to the filter for cleaning and replacements.
Quiet and efficient operation due to the use of a modern low watt EC fan with integrated thermal protection, mounted on sealed for life ball bearings and antivibration support.
Tested to the latest standards: Units are tested in the TÜV recognized laboratory, BRE labs (UK) and produced in accordance with LVD and EMC regulation meaning accurate, up to date information on electrical safety, performance and noise level that can be relied upon.
Easy installation with fixing eyelets as part of the fan body. Suitable for floor or suspended installation (optional).

Envirovent ATMOS & ATMOS DUAL PIV G4 Filter Replacement Loft Mounted Unit MIV

Envirovent ATMOS & ATMOS DUAL PIV G4 Filter Replacement Loft Mounted Unit MIV

Improves indoor air quality.
Easy to replace and install.
Durable for long-lasting performance.

Main Highlights

Envirovent ATMOS and ATMOS DUAL PIV G4 Filter Replacement Loft Mounted Unit MIV
Brand : Generic
Product type: HVAC AIR FILTER
1 Count Pack of 1
mounted piv

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Envirovent ATMOS & ATMOS DUAL PIV G4 Filter Replacement Loft Mounted Unit MIV

Improves indoor air quality.
Easy to replace and install.
Durable for long-lasting performance.

Main Highlights

Envirovent ATMOS and ATMOS DUAL PIV G4 Filter Replacement Loft Mounted Unit MIV
Brand : Generic
Product type: HVAC AIR FILTER
1 Count Pack of 1
mounted piv

We scanned 1646 products

We reviewed these offers relevant to the Envirovent Loft Mounted Positive Input Ventilation Piv Unit within online retailers such as Amazon, eBay and other local retailers, ensuring we covered all major brands and models. The products we selected come from trusted brands like Dryzone, Airtec, Kair, Generic, Brookvent, all of which have a reputation for consistently delivering high-quality products that users love and innovative approaches for function & design.

For the best Envirovent Loft Mounted Positive Input Ventilation Piv Unit in the market, we considered we took a deep dive into 8231 online reviews , focusing on elements like user satisfaction, performance in real-world conditions, and long-term reliability. Our ranking also evaluates each review’s relevancy, authenticity, up-to-dateness and depth so that the comparison is more sound.

We concluded that:

The clear winner of our analysis is Dryzone Positive Input & Passive Ventilation Kit for Condensation & Mould Control | Loft Cube PIV Unit with Heater | 4 Passive Telescopic Wall Vents for Multiple Rooms. We love many things about this product by Dryzone. What sets it apart from the competition is Improves indoor air quality, Reduces condensation and mould, Quiet, low maintenance design.
The best value product for most shoppers and where user satisfaction is continuously the highest is Airtec Air+ Wall PIV Positive Input Ventilation Unit by Airtec based on online reviews by bloggers, experts and online shoppers.
The biggest bargain at the moment for Envirovent Loft Mounted Positive Input Ventilation Piv Unit and the best cost-to-value ratio is Brookvent Airplus Positive Input Ventilation (PIV) - For Condensation and Mould Controlat Brookvent with a 33% discount.
Our list of the best Envirovent Loft Mounted Positive Input Ventilation Piv Unit is updated regularly to reflect new releases and changes in product availability, so be sure to check back often for the latest rankings and discounts.