Troni Brien House in the mountains

Last modified by the author on 04/06/2019 - 00:52

New Construction

  • Building Type : Terraced Individual housing
  • Construction Year : 2014
  • Delivery year : 2015
  • Address 1 - street : Camino a Farellones 40601 Lo Barnechea 76900 SANTIAGO, Chile
  • Climate zone : [Csa] Interior Mediterranean - Mild with dry, hot summer.

  • Net Floor Area : 275 m2
  • Construction/refurbishment cost : 315 000 €
  • Number of Dwelling : 1 Dwelling
  • Cost/m2 : 1145.45 €/m2

Proposed by :

Certifications :

  • Primary energy need
    88 kWhpe/m2.year
    (Calculation method : Other )
Energy consumption
Economical buildingBuilding
< 50A
51 à 90B
91 à 150C
151 à 230D
231 à 330E
331 à 450F
> 450G
Energy-intensive building

Troni-Brien House is a single family project with particular clients which were looking to live in a Zero Energy House, therefore the right standard to design with was Passivhaus. In Chile, normal housing heating demands about 150 to 200 kWh/m2. With Passivhaus requirements this house demands 15kWh/m2 per year.

Troni House is located in the mountain range of Santiago, Chile called Farellones. It‘s a rural area 1350 mamsl with a climate of warm summers and cold winters, with snow and temperatures below 0°C.

The building is facing north with large windows to enjoy the view and solar gains in winter, protected by eaves which provide shade and prevent overheating in summer.

he design phasestarted in 2012, the construction process started in November 2013 and thehouse was completed by April 2015.

The Project development and construction process haveconstantly encountered challenges. The construction cost was an importantissue, in Chile there is only one Passivhaus certified project so theconstruction technical requirements are far from standard, and the site difficult access increased the problem. Including all systems the construction of the project is around 40% more expensive than a traditional house in Chile.

 In order to ease the materials transport to the site,the project was designed with light weight SIP panels, and an additionalinternal steel structure was needed for seismic requirements.

The construction materials and systems were mostly covered by imported products available in Chile, only sealing air tight products were brought from Germany.

See more details about this project

Photo credit

Dino Troni


Construction Manager



Contracting method

General Contractor

Type of market


Building users opinion

The house is performing completely within expectations and we are extremely grateful to all of you for the way in which you have contributed to realize a pioneer house in Chile in terms of sustainability and energy use.
- The interior temperature stays between 20 and 23 degrees regardless of the cold or external heat. Better than expected
- The performance of the Photovoltaic solar panels is very good. We are producing more photovoltaic energy than projected.
- The mechanical ventilation system has been a great discovery. Air quality and sleep improve significantly. Floating dust is drastically reduced.
- The passive solar design lets in the sun in the day in winter and not in summer. The solar angles on the terraces work as designed.
- We are happy to see that everything works as planned.
- We consider our civil and Christian duty to promote the use of renewable and sustainable energies and systems. If you need to take the house as an example with potential clients, testimonies, articles, etc., we will to support you.

Energy consumption

  • 88,00 kWhpe/m2.year
  • 88,00 kWhpe/m2.year
  • Other

    Annual heating demand : 15 kWh/m2a
    Heating load : 12 W/m2

Envelope performance

    Exterior wall : U-value = 0.166 W/(m2K)
    Basement floor / floor slab : U-value = 0.218 W/(m2K)
    Roof : U-value = 0.085 W/(m2K)
    Frame : Uf-value: 1,70W/(m²K) - U w-value = 1.43 W/(m2K)
    Glazing : U g-value = 1.2 W/(m2K) - g -value = 60 %
    Entrance door : U d-value = 1 W/(m2K)

    Thermal envelope description :
    - Exterior wall : From inside to outside: Gypsum plasterboard plate 15 mm, wooden partition filled with glass wool 50 mm, SIP-Panel OSB-OSB 210 mm, fiber cement siding.
    - Basement floor / floor slab : From top to bottom: Wooden pavement, concrete slab 50 mm, EPS plates 30Kg/m3 150 mm, reinforced concrete slab 100 mm.
    - Roof : From bottom to top: EPS plates 30 Kg/m3 120 mm, OSB plate 11 mm, roof framing made with I-Joist rafters and filled with glass wool 240 mm, secondary roof framing made with wooden joists and filled with glass wool 100 mm, 11 mm OSB plate, ventilated roof with Techshield OSB plate.
    - Frame : Kömmerling, Marco PVC Eurodur 3S
    PVC Frame
    - Glazing : Transparent double glazed glass with Low-E coating, argon gas fill and aluminum spacers.
    - Entrance door : Wooden structure insulated with glass wool. Windows with transparent double glazed glass with Low-E coating, argon gas fill and aluminum spacers.


  • 1,90

More information

Consumptions are calculated according to PHPP (passiv'haus)


    • Electric floor heating
    • Individual gas boiler
    • Solar Thermal
    • No cooling system
    • Double flow heat exchanger
    • Solar photovoltaic
    • Solar Thermal
  • 100,00 %
  • Ventilation
    Zehnder, ComfoAir 350
    Integrated cross-counterflow heat exchanger ventilation unit.
    eff. specif. HRE: 82%

    Heating installation
    Electrical sheets floor Jolly Fenix Floor and Jolly Fenix Term.

    Domestic hot water
    UniClima EVO 2.0 solar collectors, W2 Solar SICC 300 liters storage tank, UniClima solar hydraulic kit . Auxiliary gas water heater.

    Photovoltaic installation: Solarwatt 60P 250 Wp solarmodules, SMA Technology Sunny Boy PV Inverter, Solar-Log solar monitoring system.

    Average annual generation: 9.445 kWh/a

    100% of the electricity demand and 76% of the hot water demand it is projected.

Urban environment

    The house is located on an artificial terrace carved into the hill in the mountain range of Santiago, in a rural area at 1350 meters high.

  • 22 900,00 m2
  • 1,00 %


    ComfoAir 350


    HVAC, électricité / ventilation, cooling

    Integrated cross-counterflow heat exchanger ventilation unit.
    eff. specif. HRE: 82%

    easy to install and friendly control

    UniClima EVO 2.0 solar collectors


    HVAC, électricité / heating, hot water

    good performance

    Solarwatt 60P


    Finishing work / Electrical systems - Low and high current

    we are getting more energy than projected

    Sunny Boy PV Inverter

    SMA Technology

    Finishing work / Electrical systems - Low and high current

    good performance

    Solar-Log solar monitoring system


    Finishing work / Electrical systems - Low and high current

    very useful to teach children

Construction and exploitation costs

  • 315 000

Reasons for participating in the competition(s)

?Troni House is a Zero Passive House. The large sun roof that covers 100% of the electricity demand and 76% of the hot water demand, with a heating demand 15 kWh /(m2a ) calculated according to PHPP.

Building candidate in the category

Energy & Temperate Climates

Energy & Temperate Climates

Health & Comfort

Health & Comfort

Users' Choice

Users' Choice

Green Solutions Awards 2019 - Buildings

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Author of the page
Arquiambiente Ltda

Architect, Dr. Enginner

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Green Solutions Awards 2019 - Buildings