Home Ventilation
Modern homes are built – and increasingly retrofitted – to be airtight, which is good for heating bills and bad for air quality. Without a proper way for moist, stale air to get out, that air condenses on cold surfaces, feeds mould, and leaves rooms feeling stuffy no matter how often you open a window. BioCraft designs and installs home ventilation systems that solve this properly, sized and specified for your property rather than fitted as a generic add-on.
✓ Every system specified to your property’s insulation, layout and airflow – not a one-size-fits-all fan
✓ BPEC & NICEIC accredited installers, SMAS SSIP certified, Nuaire product-trained
✓ MVHR, PIV or extract fans – fitted with manufacturers including Nuaire, Vectaire, Manrose and Vent-Axia
✓ We service what we install, so performance doesn’t quietly drop off
Book a ventilation survey and get the system that’s actually right for your home.
Why Home Ventilation Matters
Every home generates moisture – cooking, bathing, drying laundry, even breathing overnight – and that moisture needs somewhere to go. In an older, draughtier home, gaps around doors and windows used to do that job by accident. In a well-insulated modern home, they don’t, which is why condensation, mould, and poor indoor air quality have become more common as homes have got more energy-efficient, not less. The right ventilation system replaces that lost air movement deliberately and efficiently, without losing the heat you’re paying for.
Signs Your Home Needs Better Ventilation
- Windows regularly misting up, especially overnight in bedrooms
- A stuffy or stale smell in rooms with little natural airflow
- Mould appearing in bathrooms, kitchens, or on external walls despite regular cleaning
- Existing extractor fans that run but don’t seem to clear steam or smells
- A recent insulation or double-glazing upgrade followed by new damp or condensation issues
Ventilation Systems We Install
We install and specify the full range of domestic ventilation equipment, matched to the property rather than a one-size-fits-all recommendation:
- Intermittent extract fans – standard bathroom and kitchen fans that run on demand or with a humidity sensor
- Decentralised Mechanical Extract Ventilation (dMEV) – continuous, low-noise background extraction for individual wet rooms
- Centralised Mechanical Extract Ventilation (cMEV) – a single whole-house unit extracting from multiple wet rooms via ducting
- Positive Input Ventilation (PIV) – a loft or hallway-mounted unit that pushes filtered, tempered air into the home to dilute moisture throughout
- Mechanical Ventilation with Heat Recovery (MVHR) – whole-house, continuous ventilation that recovers heat from outgoing air, suited to well-insulated and newly built homes
We work with established manufacturers including Nuaire, Vectaire, Manrose, and Vent-Axia, and our recommendation is based on your property’s insulation level, layout, and existing airflow – not a single default product.
Get in touch with us
For further information get in touch with Biocraft:
MVHR vs PIV vs Extract Fans: Which Is Right for You?
As a general guide: individual extract fans suit a single problem room, such as one bathroom with recurring condensation. PIV suits a whole-house condensation problem in a property that isn’t heavily insulated, and is usually the simpler, lower-cost retrofit. MVHR suits highly insulated or newly built homes where continuous, whole-house ventilation is needed without losing the heat you’ve paid to keep in – it costs more to install but recovers a significant proportion of that heat rather than exhausting it outside. A survey will confirm which fits your property; we cover this in more detail, including running costs, in our dedicated MVHR vs PIV vs extract fans guide.
Ventilation Equipment Servicing
Ventilation systems lose efficiency without regular servicing – filters clog, fans wear, and an MVHR unit in particular needs periodic maintenance to keep recovering heat effectively. BioCraft services the systems we install, including MVHR units, so performance doesn’t quietly drop off a few years after installation (see our ventilation servicing page for details).
That means the system you get is specified by someone trained on how it actually performs, not just how it’s marketed – and installed to the electrical and building-regulation standards our accreditations require.
Frequently Asked Questions
What is the best home ventilation system?
There isn’t a single best system – it depends on the property. A single problem room usually needs an extract fan; a whole-house condensation issue in a standard-insulated home often suits PIV; a highly insulated or new-build home benefits most from MVHR, which recovers heat from the air it extracts. A survey is the reliable way to confirm which applies to your home.
How do I ventilate my home without losing heat?
Mechanical Ventilation with Heat Recovery (MVHR) is designed for exactly this – it extracts stale air and uses the heat in it to warm incoming fresh air before it enters the home, typically recovering a large majority of that heat rather than losing it outside. For homes not suited to a full MVHR retrofit, PIV and correctly sized extract fans still ventilate effectively with a much smaller heat cost than leaving windows open.
Do I need planning permission for home ventilation systems?
Most domestic ventilation installations, including MVHR, PIV, and extract fans, fall under permitted development and building regulations compliance handled by the installer rather than requiring separate planning permission. We confirm what applies to your specific property as part of the survey.
How often does home ventilation equipment need servicing?
This varies by system – extract fans and PIV units typically need a filter check annually, while MVHR systems usually need filter changes every 6–12 months and a fuller service periodically to maintain heat-recovery performance. We agree a servicing schedule at installation.
Get a Ventilation Survey
If condensation, mould, or stuffy rooms are a recurring problem, book a ventilation survey with BioCraft. BPEC & NICEIC accredited – we’ll assess your property and recommend the system that actually fits it.
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