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ERGOVENT

Use case

Concealed diffusers for renovations

Renovation is where a visible grille is most obvious — surrounded by a freshly finished ceiling, the old vent is the one thing that still looks dated. Replacing it with a concealed diffuser is one of the highest-impact upgrades a refurbishment can make.

ERGOVENT concealed diffusers integrate into new plasterboard ceilings and can work from existing ducting, giving renovation projects in Thailand clean, uninterrupted surfaces.

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The problem

The old grille lets down the new finish

In a refurbishment, everything else gets upgraded — surfaces, lighting, joinery — and then a tired grille sits in the middle of it, drawing the eye. Keeping it undoes some of the work; replacing it with another visible grille barely improves things.

Renovations also work within existing constraints: current ducting, ceiling voids and construction that can't always be changed. The solution has to fit what's already there.

The ERGOVENT solution

A clean ceiling from what you already have

Concealed diffusers are built into the new plasterboard ceiling, plastered flush and painted to match, so the refurbished surface stays continuous. Round point diffusers are a natural fit where the renovation works from existing round ducting.

Feasibility depends on the ceiling build-up and duct route — which is why we confirm the details for your specific situation before anything is ordered.

Recommended products

Where to start

The families most often specified for this kind of project — final model selection is confirmed against your requirements.

RONDO

Round concealed point diffuser — a discreet circle of air, flush with the surface and painted to match.

  • Supply & extract
  • Paintable
  • Flush ceiling or wall mount
  • Plasterboard-ready

Best for: Round ceiling or wall integration — renovations and room-by-room ventilation.

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KVADRO

Square concealed point diffuser — crisp geometry that disappears into the painted surface.

  • Supply & extract
  • Paintable
  • Flush ceiling or wall mount
  • Plasterboard-ready

Best for: Square geometry that follows rectilinear interiors and joinery lines.

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LINEO

Concealed linear slot diffuser — ventilation as a single clean line across the ceiling.

  • Supply & extract
  • Paintable
  • Flush ceiling mount
  • Plasterboard-ready

Best for: A linear, minimal ceiling detail in living spaces and suites.

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Design & installation

What to coordinate

For a retrofit, confirm what the existing building allows:

  • Duct size and connection type at each outlet.
  • Airflow and direction (supply or extract) per position.
  • Ceiling or wall build-up depth for the diffuser body.
  • Plasterboard / gypsum construction suitable for a flush finish.
  • The painting sequence and who delivers the flush, painted finish.
  • Maintenance access requirements for each position.
  • Coordination between the HVAC contractor and the ceiling and painting trades.

All technical data must be verified against the current manufacturer documentation for your specific configuration before specification and installation.

Gallery

How it looks

  • Before: a typical plastic ventilation grille interrupting a ceiling
  • After: the same ceiling with a concealed ERGOVENT diffuser painted to match
  • RONDO diffuser painted over and flush in a bedroom ceiling

Keep learning

Related guides

Frequently asked questions

Can I replace an existing grille with a concealed diffuser?
Often yes, subject to the ceiling build-up and duct route. The concealed diffuser is built into the new plasterboard and painted to match. Confirm feasibility with us for your specific situation.
Can concealed diffusers work with existing round ducting?
Round point diffusers (RONDO) are a natural fit for existing round ductwork. Send your duct sizes and we confirm the configuration.
Do I need to replace the whole ceiling?
Not necessarily — the diffuser integrates into the plasterboard around the position. The extent of work depends on the existing ceiling and duct route.
Is this suitable for a Thai condo or villa renovation?
Yes — replacing visible grilles is one of the most common renovation upgrades, and ERGOVENT Thailand supports it with local selection and coordination.
What do you need to assess a renovation?
Photos or drawings of the existing ceiling and grille positions, duct sizes if known, and the project location. Send what you have to start.

Have a project like this?

Send your drawings, BOQ or ceiling plan and the project location — our Thailand team will recommend models, confirm the configuration and prepare a quotation.

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