How it works

The science of small-duct, high-velocity comfort.

Conventional systems push large volumes of air through bulky ducts. Custom Comfort does the opposite — small, fast jets of conditioned air that mix gently into every room for even, draught-free comfort.

The principle

Aspiration, not air-dumping

Air leaves the outlets at higher velocity, creating a gentle suction (aspiration) that draws the room's own air into the stream. The result is thorough, even mixing — no hot spots, no cold corners, no draughts.

Less than 2°C variance between floor and ceiling, and room to room — for comfort you can genuinely feel.
Even, gently-mixed air throughout the room
Step by step

From source to comfort

1 · A heat source

An air-source heat pump (or boiler) provides heating and cooling energy — making Custom Comfort a natural fit for low-carbon, renewable-ready homes.

2 · The air handler & coil

A compact, insulated air handler conditions the air and drives it at high static pressure. It tucks into a loft, cupboard or plant space.

3 · Small-bore ducts

Flexible 50–63mm sound-attenuating ducts carry the air discreetly through walls, floors and ceilings.

4 · Aspirating outlets

Neat round or slotted outlets release the air to mix evenly — available for wall, floor or ceiling.

5 · Fresh-air ventilation

Optional MVHR recovers heat from outgoing air while supplying fresh, filtered air — balancing humidity year-round.

What's in the system

The Custom Comfort components

A modular kit — sized to your home — that our expert engineers design, supply and install as one.

Air handler

The compact, high-static heart of the system — efficient EC-motor driven, with heating and cooling coils.

Small-bore ducts

Flexible 50–63mm insulated tubing that routes through the building with minimal disruption.

Aspirating outlets

Discreet wall, floor and ceiling outlets that mix air gently and evenly into the room.

Sound attenuators

Inline silencers keep operation whisper-quiet by isolating noise and vibration.

Filtration & MVHR

Air filtration plus optional heat-recovery ventilation for fresh, clean, balanced air.

Smart controls

Intelligent thermostat control puts heating, cooling and ventilation at your fingertips.

Why small-duct, high-velocity

How it compares

FeatureCustom ComfortTraditional system
Duct size50–63mm — hidden in the structureLarge rigid ducts needing boxing-in
RetrofitLow disruption, fits existing homesMajor works, often impractical
Temperature evenness<2°C varianceHot and cold spots common
Wall spaceNo radiators or wall unitsRadiators / cassettes on walls
Air qualityFiltered + optional MVHROften heating only

Could it work in your home?

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