Five Common MVHR Installation Problems Solved by Ergovent

One of the most frustrating obstacles in MVHR installation is a shallow ceiling void. Many modern homes, especially apartments and retrofits, simply don't have the ceiling depth to accommodate a conventional plenum box, forcing installers to compromise on duct routing or valve placement.

The Ergovent Aero Pro Slim Box Plenum is designed specifically for these situations. It fits in ceiling cavities as shallow as 14 cm, and thanks to its adjustable side brackets, it can flex up to 20 cm to suit uneven concrete soffits. A single-screw fixing to a concrete ceiling means rapid installation without specialist tools. Where space is the enemy, the Slim Box wins.

Architects and homeowners investing in premium finishes don't want to look up and see chunky plastic grilles interrupting a beautifully plastered ceiling.  Conventional ventilation terminals are often a visual afterthought, which is increasingly unacceptable on quality residential projects.

Ergovent's invisible air valve range, including the circular RONDO and the geometric KVADRO,  are flush-mounted, frameless diffusers that sit completely flush with the ceiling surface. Both can be plastered and painted to match the surrounding ceiling exactly, making them virtually undetectable after installation.  For projects where aesthetics are non-negotiable, these valves allow the ventilation to disappear into the architecture.

A poorly balanced MVHR system creates draughts in some areas and stagnant air in others.  Standard circular valves concentrate airflow in a single point, making it harder to distribute conditioned air evenly, especially in open-plan spaces or rooms with unusual geometry.

The Ergovent LINEO Pro range takes a completely different approach: linear hidden diffusers that are fully concealed within plasterboard ceilings and walls.  By distributing airflow along a line rather than from a single point, LINEO Pro creates a gentle, even wash of air across the space, eliminating cold spots and draughts.  Compatible with 75 mm and 90 mm flexible duct, and installable vertically or horizontally, it also adapts to the duct layout rather than the other way around.

MVHR installations involve a large number of supply and extract terminals throughout a property. If each one takes significant time to fit (or requires multiple fixings, tools, and adjustments), the labour costs mount quickly and project programmes slip.

Ergovent products are engineered with the installer in mind. The Slim Box Plenum requires just a single screw to fix to a concrete ceiling. The LINEO Pro's duct locking system makes flexible duct connection fast and secure, with no specialist knowledge required. The RONDO and KVADRO valves slot into their plenums cleanly with a simple click-fit action. The cumulative time saving across a full property installation is significant. A more straightforward install means fewer callbacks too.

One of the most common complaints about MVHR systems, even well-designed ones, is audible airflow noise at the terminals. In bedrooms and quiet living rooms, even a modest hiss or whistle from a valve can disturb occupants and undermine confidence in the whole system.

Quiet operation is a core design priority across the entire Ergovent range. The RONDO and KVADRO invisible valves are specifically engineered for draught-free, low-noise performance. By delivering air at a low velocity across a wide, flush surface, they eliminate the turbulence that causes noise at conventional grilles. The result is a genuinely silent ventilation experience — the kind that lets MVHR deliver on its comfort promise, not undermine it.

In Conclusion