New build · Passivhaus
Larchfield Passivhaus
Surrey · 5-bed detached
91%
Heat recovery
28dB
In-room noise
90%
Heat recovery efficiency
MVHR · Rigid Ductwork · Commissioning
Air,
Air,
engineered from
first drawing.
We design, supply, install and commission whole-house mechanical ventilation with heat recovery — using precision rigid rectangular ducting from Domus and Greenmill. One accountable team, from analysis to airflow balancing.
Domus Ventilation
Greenmill AV
Building Regs Part F
PAS 2035 Retrofit
BPEC Certified
TR19 Ductwork Hygiene
ATTMA Airtightness
Passivhaus Ready
Our discipline
Most ventilation fails not at the unit, but in the ducting — in tight bends, leaky joints and routes that were never calculated. We treat the duct network as the engineered backbone of the system, sized and drawn before a single fixing is placed.
A premium ventilation system is a quiet one. Quietness is a by-product of low resistance — and low resistance is designed, never improvised.
That is why every AERIS project begins on the drawing board: room-by-room flow rates, pressure-loss modelling and a fully detailed rigid-duct layout. By the time materials arrive on site, the outcome is already known.
The result is filtered, tempered fresh air in every habitable room, near-silent operation, and documented compliance you can hand to a building inspector with confidence.
The drawing, alive
Scroll — and the system breathes.
01 · INTAKE & EXHAUSTTwo sealed routes through the roof — fresh air drawn in, stale air pushed out.
02 · HEAT RECOVERY0% of outgoing warmth captured and returned to the incoming air.
03 · SUPPLYFiltered, tempered air delivered to the bedroom and living room.
04 · EXTRACTMoisture and stale air pulled from the kitchen and bathroom — continuously, silently.
The engagement
Four stages,
Four stages,
one accountable team.
No hand-offs, no finger-pointing between designer, installer and commissioner. We own the system from the first analysis to the final measured airflow certificate.
01
Design & Analysis
HEAT-LOSS CALCSCAD LAYOUTSPART F
The foundation stage. We survey the property, calculate required ventilation rates and produce full technical drawings of the rigid-duct network before any quotation is fixed.
- Room-by-room extract & supply flow-rate schedule
- Pressure-loss & acoustic modelling of every duct run
- Coordinated CAD drawings & full project documentation
02
Ductwork Supply & Install
DOMUSGREENMILLRIGID RECTANGULAR
We supply and install rigid rectangular ducting — not crushable flexible hose — routed along the low-resistance paths defined in the design stage and sealed for an airtight network.
- Genuine Domus & Greenmill rectangular duct & fittings
- Sealed, gasketed joints for measured airtightness
- Acoustic & condensation control on every run
03
MVHR Installation
UNIT SIZINGHEAT RECOVERYFILTRATION
The heat-recovery unit is selected to match the calculated airflow, then installed, insulated and connected so it performs to specification — quietly and efficiently.
- Correctly sized unit for the building's demand
- Insulated condensate & intake/exhaust routing
- F7-grade filtration for clean incoming air
04
Commissioning & Balancing
AIRFLOW BALANCEMEASUREDCERTIFIED
A system is only finished when it is proven. We commission, balance and measure every valve, then hand over a full set of documented airflow results.
- Each terminal balanced to its design flow rate
- Anemometer-measured commissioning certificate
- Homeowner handover, O&M manual & filter schedule
What we deliver
Complete ventilation,
Complete ventilation,
nothing outsourced.
Design intelligence, genuine manufacturer components and certified commissioning — delivered as a single, fixed-scope engagement.
/01
Design, Analysis & Drawings
The first and most important stage. Ventilation calculations, pressure-loss modelling and fully detailed CAD duct layouts that make the build predictable and compliant.
Ventilation & heat-loss calculationsCoordinated CAD duct drawingsPart F compliance documentation
/02
Rigid Rectangular Ductwork
Supply and installation of Domus and Greenmill rigid rectangular duct systems — engineered routes, sealed joints and stable, low-resistance airflow throughout the home.
Genuine Domus & Greenmill componentsAirtight, gasketed connectionsAcoustic & condensation control
/03
MVHR Unit Installation
Mechanical ventilation with heat recovery, correctly sized and installed. Up to 90% of outgoing heat reclaimed, with filtered fresh air delivered to every habitable room.
Demand-matched unit selectionHigh-efficiency heat exchangerQuiet, insulated installation
/04
Commissioning & Balancing
Every system is set up, balanced and measured. We tune each terminal to its design flow rate and certify performance — so what was drawn is what you receive.
Measured airflow at every valveCommissioning certificate issuedFull handover & maintenance plan
Selected work
Delivered &
Delivered &
measured.
Every system handed over with documented, measured airflow. A few representative engagements below.
Illustrative samples — replace with real projects at launch
Deep retrofit · PAS 2035
Victorian Terrace Retrofit
London E5 · 3-bed terrace
100%
Valves balanced
3.1m³/h
Per terminal
Multi-unit · Developer
Riverside Apartments
Kent · 24 dwellings
24
Units commissioned
90%
Avg. recovery
Why heat recovery
Fresh air that
Fresh air that
keeps its warmth.
MVHR continuously replaces stale, humid indoor air with filtered fresh air — while a heat exchanger keeps the warmth you have already paid for inside the building.
90%
Heat retained
Up to 90% of the heat in outgoing air is recovered and returned to incoming fresh air.
F7
Filtered intake
Pollen, dust and particulates filtered out before air ever enters your living space.
0mould
Condensation control
Constant moisture extraction protects the fabric of the building from damp and mould.
24/7
Continuous, quiet
Near-silent background ventilation that runs day and night without open windows.
Engineered components
Built on systems
Built on systems
that perform.
We specify rigid rectangular ducting from two of the UK's most trusted manufacturers — chosen for low resistance, durability and a clean, sealed install.
Domus.
Rigid Rectangular
Domus Ventilation's rigid rectangular duct range gives a slim, low-profile run that fits within floor and ceiling voids while maintaining a smooth internal bore — minimising pressure loss and noise across the whole network.
220×90
mm profile
110×54
mm profile
Sealed
gasket system
Greenmill
AV Ducting
Greenmill AV supplies a comprehensive rigid ducting and fittings system engineered for residential MVHR. Robust, consistent components mean fewer joints, tighter seals and a duct route that behaves exactly as the design predicts.
Full
fittings range
Low
resistance bends
PVC
durable build
Rigid rectangular duct is specified over flexible hose because it resists crushing, holds its cross-section, and delivers the calculated airflow for the life of the system.
≤ 35 dB(A)
Target in-room noise level at habitable terminals
≈ 90%
Sensible heat recovery efficiency
Part F + L
Building Regulations alignment
100% measured
Every terminal commissioned & recorded
2×/yr
Recommended filter service interval
From enquiry to handover
A clear path,
A clear path,
start to finish.
A typical whole-house project, sequenced so you always know what happens next and who is responsible for it.
Week 01Survey & brief
Site survey and requirements
We assess the property, discuss the brief and gather the data needed to calculate the system accurately.
Week 02–03Design package
Drawings, analysis & fixed quote
Flow-rate schedules, pressure-loss modelling and coordinated duct drawings — delivered with a fixed-scope proposal.
Week 04–05First fix
Rigid ductwork installation
Domus and Greenmill rectangular duct routed and sealed to the approved design during the building's first-fix phase.
Week 06Second fix
MVHR unit & terminals
Heat-recovery unit, valves and grilles installed, insulated and connected ready for commissioning.
Week 07Handover
Commissioning & certification
Every terminal balanced and measured, certificate issued, and the system handed over with full documentation.
The people
Engineers,
Engineers,
not just installers.
Ventilation is an engineering discipline. Every AERIS project is led by accredited specialists across design, installation and commissioning.
Roles shown — named, verifiable team added at launchVentilation Design Engineers
Flow-rate calculations, pressure-loss modelling and fully detailed rigid-duct CAD layouts — the foundation of every system.
Part FPHPP-literateCAD
Installation Leads
Sealed, gasketed rigid ductwork installed to the approved design — clean routes, airtight joints, condensation control.
BPEC CertifiedTR19CSCS
Commissioning Engineers
Anemometer-measured balancing of every terminal, with certificates and handover documentation that satisfy building control.
BPEC CommissioningATTMA
In their words
Trusted by
Trusted by
technical buyers.
Illustrative sample quotes — replace with real, attributed reviews at launch
“The design package was the most thorough we’ve had from a ventilation contractor — our building control inspector signed off without a single query.”
Project Manager
Residential Developer · Kent
“They gave us proper duct drawings to coordinate against, not a vague schematic. That’s rare, and it saved us on site.”
Associate Architect
Practice · London
“Quiet, warm and no condensation anywhere. They handed us measured airflow figures for every room — exactly what was promised.”
Homeowner
Self-build · Surrey
How we price
Transparent on
Transparent on
what drives cost.
Every system is bespoke, so we scope before we quote. Four factors shape the figure — and we fix the scope before any work begins.
Dwelling size
Number of habitable rooms and wet rooms sets the airflow demand and duct run length.
New build vs retrofit
Retrofits need more design effort to route rigid duct through existing voids and ceilings.
Certification target
Passivhaus or low-energy targets raise the bar on airtightness, modelling and verification.
Duct routing complexity
Constrained routes and acoustic requirements add fittings, labour and design time.
from £950
for a full design package — calculations, room-by-room flow schedule and coordinated duct drawings. Credited against the installation if you proceed. (indicative demo figure)
For specifiers
The Part F & ductwork spec one-pager.
A concise reference for architects and developers: required ventilation rates, rigid vs flexible duct, and what a compliant MVHR design must show. Free, no obligation.
Good questions
Answered
Answered
plainly.
If your question isn't here, our engineers are happy to talk it through before you commit to anything.
MVHR — Mechanical Ventilation with Heat Recovery — continuously extracts stale air from wet rooms and supplies filtered fresh air to living spaces, recovering up to 90% of the heat in the process. In airtight new builds and deep retrofits it's often required to satisfy Building Regulations Part F, and it's the most comfortable way to ventilate a well-insulated home without losing heat through open windows.
Flexible hose sags, kinks and crushes — every imperfection adds resistance and noise, and starves rooms of their design airflow. Rigid rectangular duct from Domus and Greenmill holds its cross-section permanently, follows the engineered route, and delivers the calculated flow rate quietly for the life of the system. It is the single biggest factor in whether a ventilation system performs as promised.
Because the outcome is decided on paper. By calculating room-by-room flow rates and modelling pressure loss before installation, we size the unit correctly, choose low-resistance duct routes, and guarantee the system can be balanced to specification. Skipping this stage is the most common reason ventilation systems end up noisy, ineffective or non-compliant.
Both. New builds give us the cleanest duct routes, but we regularly design and install ventilation in renovations and retrofits, working within existing voids and ceilings. The PAS 2035 framework guides our retrofit approach, and the design stage is where we resolve the practical routing challenges before work begins.
A fully balanced system and the paperwork to prove it: measured airflow readings at every terminal, a commissioning certificate, an operation & maintenance manual, and a filter-service schedule. It's documentation you can hand directly to a building inspector or keep for warranty and resale.
Begin with stage one
Start with a
Illustrative — confirm at launch
Start with a
design, not a guess.
Tell us about your project. We'll arrange a survey and return a clear, fixed-scope design proposal — the foundation everything else is built on.
Speak to an engineer
0800 246 8120
Email the design team
design@aeris-ventilation.co.uk
Working across
London & the South East, UK-wide on request
Quick message
WhatsApp us
Prefer to talk?
Book a 15-min design call
12-year guaranteeWORKMANSHIP
£5m liabilityFULLY INSURED
BPEC accreditedCERTIFIED
Thank you — request received.
One of our ventilation engineers will be in touch within one working day to arrange your survey.