Real project · 2017–2018

Casa Llucmajor: one build, every installation

From the red underfloor-heating panels to the finished plant room: a year of work told in real photos we took as we went.

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Freshly installed underfloor heating across the whole floor plan during the Casa Llucmajor build, an installation by JSL in Mallorca
RITE-certified by the Ministry of Industry HVAC · Electrical · Water · Pool plant Photo report after every visit Spanish, English and German

Chapter 1

Comfort starts in the floor

The whole floor plan got underfloor heating: circuits balanced room by room and a 7-circuit manifold.

Spiral underfloor-heating circuit in a bedroom during the Casa Llucmajor build, an installation by JSL in Mallorca

Bedroom

Spiral circuit

Every room gets its own circuit, routed to spread heat without cold spots.

Concentric underfloor-heating circuit in the main room during the Casa Llucmajor build, an installation by JSL in Mallorca

Main room

Concentric routing

The pipe traces the room's geometry before disappearing.

7-circuit underfloor-heating manifold during the Casa Llucmajor build, an installation by JSL in Mallorca

7-circuit manifold

Balanced and tested

Every circuit leaves pressure-tested before the screed.

Chapter 2

Then it vanishes under the screed

The best installation is the one you never see: the screed covers the circuits and the house is ready for any flooring.

Exposed PEX underfloor-heating pipe in the hallway during the Casa Llucmajor build, an installation by JSL in Mallorca

The hallway, before

Exposed PEX

Freshly laid circuits on the studded panel.

The same hallway with the screed poured during the Casa Llucmajor build, an installation by JSL in Mallorca

The same hallway

Screed poured

Days later: the screed covers the work for good.

Transition between the red underfloor heating and the grey screed during the Casa Llucmajor build, an installation by JSL in Mallorca

The transition

Red and grey

The exact border between what we install and what you see.

Chapter 3

The heart: the plant room

Heat pump, hot-water storage, water softener and buffer tank — mounted, insulated and arranged to last decades.

Open heat-pump indoor unit during plant-room assembly in the Casa Llucmajor build, an installation by JSL in Mallorca

During assembly

Heat pump · 2018

The indoor unit open: pump, copper and valves in view.

PPR and brass valves and distribution in the plant room during the Casa Llucmajor build, an installation by JSL in Mallorca

Valves and distribution

PPR · Brass

Every line identifiable, every valve reachable.

Finished plant room with cylinder, water softener and buffer tank in the Casa Llucmajor build, an installation by JSL in Mallorca

Finished plant room

Built to last

Cylinder, softener and buffer: insulated and in order.

Chapter 4

Climate you can't see

Ducted air: the machine lives in the false ceiling and all that's left on the wall is a thermostat.

Ducted fan coil hung from the slab in the false ceiling during the Casa Llucmajor build, an installation by JSL in Mallorca

The fan coil, hidden

False ceiling

Hung from the slab and insulated before the ceiling closed.

Refrigerant lines arriving at the air-conditioning unit during the Casa Llucmajor build, an installation by JSL in Mallorca

Refrigerant lines

Outdoor connection

The lines arrive clean at the unit.

Zone-control thermostat on the wall during the Casa Llucmajor build, an installation by JSL in Mallorca

The only visible part

Zone control

Of the whole installation, this is all the client touches.

The result

A house that heats and cools itself

Double-height spaces, a sculptural staircase and not a machine in sight. Finished in 2018, running ever since — and we still do the maintenance.

Finished double-height living room after the Casa Llucmajor build, an installation by JSL in Mallorca

Double height

Main living room

Light, volume and underfloor heating underfoot.

Finished wood and steel staircase after the Casa Llucmajor build, an installation by JSL in Mallorca

The staircase

Wood and steel

The architectural detail that crowns the build.

Finished open-plan living space towards the window after the Casa Llucmajor build, an installation by JSL in Mallorca

Towards the window

Open plan

The same floor you saw in red, now invisible.

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