GLN

A white duvet in early sun, with long shadows of leaves falling on the bedroom wall.
Illustrative photograph

The room stays the same. The day doesn’t.

GLN heats and cools your home through slim panels on the wall. No vents, no ducts, and no fan in the room.

Book a visit

One day in July

Outside, Wuhan climbs from 27°C at dawn to 36°C in the afternoon. Inside, the room holds 25°C.

Illustrative photographs

  1. A dim bedroom at dawn. A single shaft of sun falls on the wall above an unmade bed.

    First sun on the bedroom wall. The room is as cool as it was at midnight.

    Outside 27°C. In the room 25°C.

  2. Morning sun throws the shadow of a window frame across a patterned tile wall behind a kitchen counter.

    The window lays its frame across the tiles. With no air blowing, steam from the kettle rises straight up.

    Outside 30°C. In the room 25°C.

  3. A narrow desk along a window, with an open notebook, a pencil pot and a small globe lamp; a chair pulled up to it.

    It passes 34°C in the street. At the desk, loose pages stay where you put them.

    Outside 34°C. In the room 25°C.

  4. A wide tatami room with shoji screens open to a garden; afternoon sun draws a lattice of light on the mats.

    The hottest hour, 36°C outside. Lie down on the mats and nothing blows on your neck.

    Outside 36°C. In the room 25°C.

  5. A low olive corduroy sofa against a warm wall, lit from the side by a standing lamp in the evening.

    Evening light on the far wall. Every seat on the sofa feels the same; none of them sits in a draught.

    Outside 32°C. In the room 25°C.

  6. A dark tatami room late at night: a low table and a floor cushion in one pool of light.

    Lights low. No fan starts up in the night, and no vent ticks in the ceiling.

    Outside 29°C. In the room 25°C.

What you won’t notice

Most of what GLN does, you notice by what isn’t there.

A bare beige wall with the afternoon shadows of a vase of twigs and a cup.
A wall with nothing on it but the afternoon. Illustrative photograph.

The panel

A slim frame of aluminium fins that stands 90 mm off the wall. Water, warmed or cooled by the heat pump outside, runs through it, and the surfaces of the room settle at the temperature you set.

Size
600 × 1800 × 90 mm
Cooling
about 420 W per panel
Heating
about 510 W per panel

Output figures are demo figures for this draft.

Finish

Pipes stay inside the wall

They come down inside the wall from the ceiling and join the panel at a single fitting. No condensation water appears indoors.

What you actually feel

Felt temperature is roughly the average of the air and the surfaces around you (ASHRAE 55). With air at 27°C and walls at 22°C, a room feels about 24.5°C.

Drawing of the GLN panel Front view and side section. The panel is 600 mm wide and 1800 mm tall and stands 90 mm from the wall. Two pipes come down inside the wall from the ceiling and meet the panel at one fitting. Ceiling Floor 1800 600 90 Front Side section
Panel P-1800, drawn to scale. Dashed lines are the flow and return pipes, hidden inside the wall.

Visit the showroom

Sit in a room with the panels running, in July heat or January cold, then decide. A visit takes about 40 minutes. Bring a floor plan if you have one.

Address
3F, 188 Zhongnan Road, Wuchang District, Wuhan
Hours
Tuesday to Sunday, 10:00 to 18:00
Phone
027 8765 4321
Preferred day

We call you back to fix a time. This is a demo page, so nothing is sent.

A tatami room with a round window and a glass door open to a garden, in soft daylight.
Illustrative photograph, not the GLN showroom.