PPS/L - Non-heated PIV

Enlarge

MVA42-PIV Units (Positive Input Ventilation)-Loft Mounted PIV Units (3).jpg

MVA42-PIV Units (Positive Input Ventilation)-Loft Mounted PIV Units (4).jpg

MVA42-PIV Units (Positive Input Ventilation)-Loft Mounted PIV Units (5).jpg

MVA42-PIV Units (Positive Input Ventilation)-Loft Mounted PIV Units (6).jpg

MVA42-PIV Units (Positive Input Ventilation)-Loft Mounted PIV Units (1).jpg

PPS/L - Non-heated PIV

(MVA42) PPS/L

£215.00 Per Kit

Airflow

60 L/s

Noise

38dB

Energy

A+

Secure Checkout

Protected payments

Fast UK Delivery

Quick dispatch

Technical Support

Free expert advice

PAS Compliant

Fully certified

In Stock

Improve whole-home air quality and tackle condensation at the source with the Monsoon PPS/L Positive Pressure System. Installed neatly in the loft, PPS/L draws from the roof space (or external air where ducted), filters it, and feeds clean, pressurised air through a central ceiling diffuser. This continuous supply dilutes humidity, odours and indoor pollutants, gently pushing stale, moist air out of the building fabric for a drier, healthier home. Built by Monsoon, the PPS/L uses a high-efficiency EC motor for whisper-quiet, low running costs. The long-life filter is quick to access for straightforward maintenance, while selected models include an integral heater to lightly temper incoming air during colder months. Smart control options offer adjustable trickle/boost modes with humidity/temperature response to handle peak moisture after bathing or cooking. Discreet installation and a central diffuser mean whole-home impact with minimal visual change.

Key Features

Brand: Monsoon — PPS/L loft-mounted PIV
Whole-home condensation control from a single ceiling diffuser
Filtered fresh air supply helps reduce dust and allergens
Quiet, energy-efficient EC motor (continuous trickle + boost)
Optional integral heater for comfort in cooler months
Smart humidity/temperature response with adjustable boost
Long-life, easy-access filter for simple maintenance
Discreet loft installation with insulated flexible ducting
Helps meet UK Building Regulations Part F ventilation guidance

What’s Included

Monsoon PPS/L loft PIV unit
Insulated flexible duct and ceiling diffuser (model dependent)
Filter cartridge (pre-installed)
Mounting feet/straps & fixings
Installation & user instructions

Ideal For

Houses and bungalows seeking whole-home condensation & mould control
Retrofits where an unobtrusive, energy-efficient ventilation upgrade is needed

Installation Notes

Site the PPS/L on a stable loft deck, away from obstructions; isolate via a fused spur (qualified electrician recommended).
Route insulated duct to a central landing diffuser for even distribution.
Maintain background trickle vents in habitable rooms to aid airflow.
Follow Monsoon guidance for intake air source (roof space or ducted external).

Maintenance

Inspect/replace the Monsoon filter at recommended intervals (use environment dependent).
Wipe diffuser; check duct/insulation and test boost periodically.

Technical Overview

Mounting: Loft-mounted, central ceiling diffuser
Motor: High-efficiency EC, continuous operation with boost
Duct size: Ø125–150 mm (model dependent)
Filter: Replaceable long-life (pre-installed)
Heater: Optional integral (selected PPS/L models)
Electrical: 220–240 V AC, fused spur (see datasheet for fuse rating)
Materials: Robust polymer housing with insulated duct for reduced losses

First4Ventilation says:

"We love Positive Input Ventilation which is also known as a positive pressure system. This draws large volumes of air from the loft, filters and in some units heats it, and pushes it through the property using the pressure principle to force stale air out using the natural leakage points or via installed trickle vents. This is a proven and powerful ventilation solution which should show improvements in as little as 48 hours. Nicely quiet, well-built and fully featured. This is a great PIV or PPS solution."

Consumer/Fitter says:

"A family member has had one of these PIV units working in their home for 25 years now with only some filter changes needed. Their home hasn’t got any damp or mould issues and always smells of fresh air because of the impact of this unit." That's why we fitted one to our place as soon as we moved in."

Your basket is empty

hmm

hmm