Can Martí, Ibiza: Passivhaus Plus home

ideadmin on 6 February 2025

Casa Can Martí is a single-family home located in Ibiza, Balearic Islands, and is certified Passivhaus Plus.

Can Martí, Ibiza: Passivhaus Plus Home

Passivhaus Certification, Thermal bridge calculations

Description

Casa Can Martí is a single-family home located in Ibiza, Balearic Islands, and is certified Passivhaus Plus.

Fraile Project did the Site Supervision and Construction Management for the project. The home was designed by architects Antonio Albaladejo and Josep Ferrer Llaneras and certified by Oliver Style from Praxis Resilient Buildings.

The house is built with a CLT structure with external EPS insulation on the walls and XPS insulation on the roof.

The windows consist of aluminium-timber frames with low-e argon-filled double glazing, and exterior sliding shading devices and two pergolas on the north and south facades.

The house has a very high level of airtightness, tested on-site with a Blower Door test, together with a mechanical ventilation and heat recovery systems, that guarantees good indoor air quality and removes contaminants and excess humidity 24 h/d.

To reach Passivhaus Plus, 24 solar photovoltaic panels were installed on the roof, providing a 10.8 kWP generator, along with a vacuum tube solar collector for domestic hot water.

Links:

PEP

iPHa

Photos: Rafa Fraile

Year: 2025
Location: Santa Eulària des Riu, Islas Baleares, España
Architecture: Fraile Project with Antonio Albaladejo y Josep Ferrer Llaneras
Services provided by Praxis: Passivhaus Certification, Thermal bridge calculations
Passivhaus Certification Class: Passivhaus Plus
Climate zone: Warm
Floor area: 212 m2
Thermal envelope area: 852 m2
Blower Door Result: 0,63 n50
Heating Demand: 11 kWh/m2·a
Cooling Demand: 19 kWh/m2·a
Primary Energy Renewable consumption (EPR): 53 kWh/m2·a
Final Energy consumption: 50 kWh/m2·a
Renewable energy generation: 69 kWh/m2·a
CO2eq emissions: 15 kg/m2·a

Casa SG Mas Alba: Passivhaus Classic home

ideadmin on 6 February 2025

Sg Mas Alba is a single-family home located in Sant Pere de Ribes, on a steeply sloped plot, which defines the design of the house on two levels

Casa SG Mas Alba: Passivhaus Classic Home

Passivhaus Certification

Description

Sg Mas Alba is a single-family home located in Sant Pere de Ribes, on a steeply sloped plot, which defines the design of the house on two levels: the first floor, where the main access and daytime areas are located, and the ground floor, open to the garden, where the bedrooms are located.

The house was designed by the SG Arq architecture practice and certified by Oliver Style of Praxis Resilient Buildings as Passivhaus Classic.

Outer walls are made of honeycomb ceramic brick, insulated with external insulation. The terraces and flat roofs are made of concrete slabs, insulated with XPS insulation. The light external colours of the walls and roofs increase the reflection of solar radiation in the summer and reduce cooling demand- a typical vernacular passive strategy throughout the Mediterranean.

The windows include PVC frames with double glazing and external venetian blinds with adjustable slat angles for controlling solar gains. A Zehnder mechanical ventilation system with heat and humidity recovery provides optimum air quality and removal of excess humidity. Heating and cooling are provided by an air-source heat pump and indoor ducted split units. Domestic hot water is generated by a high-efficiency air-to-water heat pump, both made by Panasonic.

Links:

PEP

iPHa

Photos: Sg Arq

Year: 2025

Location: Sant Pere de Ribes, Barcelona, España

Architecture: Sg Arq

Services provided by Praxis: Passivhaus Certification

Passivhaus Certification Class: Passivhaus Classic

Climate zone: Warm

Floor area: 113 m2

Thermal envelope area: 470 m2

Blower Door Result: 0,42 n50

Heating Demand: 10 kWh/m2·a

Cooling Demand: 14 kWh/m2·a

Primary Energy Renewable consumption (EPR): 46 kWh/m2·a

Final Energy consumption: 37 kWh/m2·a

Renewable energy generation: 0 kWh/m2·a

CO2eq emissions: 13 kg/m2·a

Borda Nova, Andorra: Multifamily Passivhaus

ideadmin on 22 November 2024

La Borda Nova, Andorra: Multiresidential Passivhaus

Public development with 44 social housing units, designed by architects Pau Iglesias Rodríguez and Jacint Gil Rodríguez, with Oliver Style of Praxis Resilient Buildings as Passivhaus certifier

La Borda Nova, Andorra: Multifamily Passivhaus

Passivhaus Certification

Description

Public development with 44 social housing units, designed by architects Pau Iglesias Rodríguez and Jacint Gil Rodríguez, with Oliver Style of Praxis Resilient Buildings as Passivhaus certifier. The building is located in the city of Andorra La Vella, the capital city of Andorra.

The project has a treated floor area of 3350 m2 and includes 228 parking places, ground floor commercial premises and a roof garden.

Alongside the certification of the building, Praxis is carrying out Passivhaus component certification of the Butech (Porcelanosa) prefabricated construction system which is being installed on the façade of the building.

Fotos & renders: Locubsa; Pau Iglesias y Jacint Gil

Year: 2024

Location: Andorra La Vella, Andorra

Architecture: Pau Iglesias Rodríguez – Jacint Gil Rodríguez

Services provided by Praxis: Passivhaus Certification

Passivhaus Certification Class: Passivhaus Classic

Climate zone: Warm Temperate

Floor area: 3350 m2

Thermal envelope area: 4796 m2

Blower Door Result: 0,49 n50

Heating Demand: 17 kWh/m2·a

Cooling Demand: – kWh/m2·a

Primary Energy Renewable consumption (EPR): 70 kWh/m2·a

Final Energy consumption: 78 kWh/m2·a

Renewable energy generation: 0 kWh/m2·a

CO2eq emissions: 17 kg/m2·a

Casa SG Joaquim: Passivhaus Plus

ideadmin on 21 November 2024

Description Casa SG Joaquim is a Passivhaus Plus certified home, designed by architect and Passivhaus Designer Sergi Gargallo of SgARQ Passivhaus Architecture, and certified by Oliver Style of Praxis Resilient Buildings. This terraced home has a façade to the main street and the interior patio to the rear of the property. The building consists of …

Casa SG Joaquim: Passivhaus Plus

Passivhaus

Description

Casa SG Joaquim is a Passivhaus Plus certified home, designed by architect and Passivhaus Designer Sergi Gargallo of SgARQ Passivhaus Architecture, and certified by Oliver Style of Praxis Resilient Buildings. This terraced home has a façade to the main street and the interior patio to the rear of the property.

The building consists of a ground floor and a first floor with an accessible roof terrace, garden and swimming pool. External walls are insulated with 100mm of external insulation, eliminating structural thermal bridges, with 200mm of thermal insulation on the roofs.

High-performance windows and a very low level of air leaks- tested on-site with a Blower Door test- reduce heat losses in winter and heat gains in the summer, keeping the house comfortable with minimal energy consumption.

The home has a whole house balanced mechanical ventilation system with heat and humidity recovery, with a Zehnder ComfoairQ 350 ERV unit, certified as a Passivhaus component for hot climates. To reach Passivhaus Plus, 18 solar photovoltaic panels were installed on the roof, forming a 6.7 kWp array. PHPP energy modelling indicated the home will have an annual consumption of around 4282 kWh/a, with an on-site photovoltaic generation of around 7903 kWh/a.

Links:

PEP (Plataforma Edificación Passivhaus)

iPHa (Base de datos internacional de proyectos Passivhaus)

Photos: Joan Giribet

Year: 2022

Location: Vilanova i la Geltrú, Catalonia, Spain

Architecture: SGArq Passivhaus Architecture

Services provided by Praxis: Passivhaus Certification

Passivhaus Certification Class: Passivhaus Plus

Climate zone: Warm Temperate

Floor area: 149 m2

Thermal envelope area: 475 m2

Blower Door Result: 0,6 n50

Heating Demand: 14 kWh/m2·a

Cooling Demand: 17 kWh/m2·a

Primary Energy Renewable consumption (EPR): 36 kWh/m2·a

Final Energy consumption: 29 kWh/m2·a

Renewable energy generation: 66 kWh/m2·a

CO2eq emissions: 15 kg/m2·a

Bitoriano Etxea: Passivhaus Plus home

ideadmin on 30 September 2024

Description Praxis has carried out Passivhaus Plus certification for this semi-detached single-family home in Bitoriano, Álava, designed by architect and Passivhaus Designer Marçal Bonadona Berdala. The house has two floors with a treated floor area of 117 m². Built with a lightweight timber frame system, the walls have 24 cm of external insulation, 14.5 cm …

Bitoriano Etxea: Passivhaus Plus home

Passivhaus Certification

Description

Praxis has carried out Passivhaus Plus certification for this semi-detached single-family home in Bitoriano, Álava, designed by architect and Passivhaus Designer Marçal Bonadona Berdala.

The house has two floors with a treated floor area of 117 m². Built with a lightweight timber frame system, the walls have 24 cm of external insulation, 14.5 cm between the structure and 4.5cm in the service void. The roof has a total of 28.5 cm of insulation. Ecoven Plus S82 windows were used, along with argon filled low-emissivity triple glazing.

The ventilation system includes a WOLF CWL-2 325 heat recovery unit. Heating and cooling is provided by a radiant floor system with support from fan coils, powered by a Panasonic Aquarea KIT-ADC09JE5C-1 heat pump, which also produces domestic hot water.

The home achieved a blower door test result of n50 = 0.4 air changes per hour (ACH).

On the roof, 13 photovoltaic panels have been installed, generating around 6,000 kWh/year.

Links:

PEP (Plataforma Edificación Passivhaus)

iPHa (Base de datos internacional de proyectos Passivhaus)

Photos: Marçal Bonadona

Year: 2022

Location: Calle Iturribide, Bitoriano (Álava), Spain

Architecture: Marçal Bonadona Berdala

Services provided by Praxis: Passivhaus Certification

Passivhaus Certification Class: Passivhaus Plus

Climate zone: Warm Temperate

Floor area: 117 m2

Thermal envelope area: 498 m2

Blower Door Result: 0,4 n50

Heating Demand: 14 kWh/m2·a

Cooling Demand: 3 kWh/m2·a

Primary Energy Renewable consumption (EPR): 39 kWh/m2·a

Final Energy consumption: 32 kWh/m2·a

Renewable energy generation: 55 kWh/m2·a

CO2eq emissions: 17 kg/m2·a

Bellcaire: PHI Low Energy Building

ideadmin on 30 September 2024

Description Located in Bellcaire d’Empordá, Catalonia, this single-family home was certified by Oliver Style as a PHI Low Energy Building. Designed by Gemma Blanes and Marina Farró from HEM Green & Balanced Architecture, and built by Evowall, the home has a compact triangular shape that takes advantage of the greater height to create two floors …

Bellcaire: PHI Low Energy Building

Passivhaus Certification, Blower Door test, Thermal bridge calculations

Description

Located in Bellcaire d’Empordá, Catalonia, this single-family home was certified by Oliver Style as a PHI Low Energy Building. Designed by Gemma Blanes and Marina Farró from HEM Green & Balanced Architecture, and built by Evowall, the home has a compact triangular shape that takes advantage of the greater height to create two floors and a double-height space in the sitting and dining room area of the house, adding spaciousness. The outdoor area features a pergola for shading in the summer months, adding a dynamic element to the building structure.

The home was built using the Evowall prefabricated steel-frame system, with a patented low-conductivity mortar and EPS and PIR insulation.

The pine timber windows frames are made by Unilux, with argon filled low emissivity double glazing, and traditional “Alicantina” shutters.

A Zehnder ComfoAir 180 balanced mechanical ventilation system with heat recovery provides comfort ventilation.

Heating and cooling are provided by an LG air-to-air heat pump with indoor ducted units. For domestic hot water, a Thermor Aeromax Split heat pump was used. Passivhaus certification was carried out by Praxis Resilient Buildings.

Links:

PEP (Plataforma Edificación Passivhaus)

iPHa (Base de datos internacional de proyectos Passivhaus)

Year: 2023

Location: Bellcaire d’Empordá, Girona, España

Architecture: HEM – Gemma Blanes / Marina Farró

Services provided by Praxis: Passivhaus Certification, Blower Door test, Thermal bridge calculations

Passivhaus Certification Class: PHI Low Energy Building

Climate zone: Warm

Floor area: 114 m2

Thermal envelope area: 481 m2

Blower Door Result: 0,8 n50

Heating Demand: 30 kWh/m2·a

Cooling Demand: 11 kWh/m2·a

Primary Energy Renewable consumption (EPR): 53 kWh/m2·a

Final Energy consumption: 42 kWh/m2·a

Renewable energy generation: 0 kWh/m2·a

CO2eq emissions: 22 kg/m2·a

Deep energy retrofit, Pamplona: EnerPHit Plus

ideadmin on 30 September 2024

Rehabilitación de Vivienda en Pamplona: EnerPHit Plus

Description This deep energy retrofit of a semi-detached home is one of the first in Spain to obtain the EnerPHit Plus certification. The project was certified by Oliver Style of Praxis Resilient Buildings, with Passivhaus design by Alberto Jimenez Tiberio of Arrebol Eficiencia Energética. The dwelling, over three floors, belongs to a row of terraced …

Deep energy retrofit, Pamplona: EnerPHit Plus

Passivhaus Certification

Description

This deep energy retrofit of a semi-detached home is one of the first in Spain to obtain the EnerPHit Plus certification. The project was certified by Oliver Style of Praxis Resilient Buildings, with Passivhaus design by Alberto Jimenez Tiberio of Arrebol Eficiencia Energética.

The dwelling, over three floors, belongs to a row of terraced houses located in Beloso, Pamplona. The exposed brick facades and the aesthetics of the neighbourhood meant the house had to be insulated internally, mainly using mineral wool insulation. To meet the Passivhaus requirements, certified Cortizo A84 window frames were installed together with low emissivity, argon filled triple glazing.

The airtightness of the envelope was massively improved during the renovation, with an excellent result in the final blower door test of n50 = 0.64 ach.

Mechanical ventilation with heat recovery is with a Siber Excellent 4 unit, ensuring a high level of air quality. An air-to-water Mitsubishi heat pump was installed for heating and cooling (using underfloor heating and fan coils), and for domestic hot water production.

Solar photovoltaic panels were installed on the roof, bringing the house to EnerPHit Plus certification. The PV array generates, during a typical year, more energy than the house consumes.

Retrofitting an existing home to Passivhaus standard is a bold step in sustainability, reducing a building’s carbon footprint by reusing the existing structure and slashing operational carbon emissions. The project was certified to EnerPHit Plus by Praxis Resilient Buildings.

Links:

PEP (Plataforma Edificación Passivhaus)

iPHa (Base de datos internacional de proyectos Passivhaus)

Year: 2024

Location: Pamplona, Spain

Architecture: Juan Carlos Muguerza

Services provided by Praxis: Passivhaus Certification

Passivhaus Certification Class: EnerPHit Plus Certification

Climate zone: Warm Temperate

Floor area: 299 m2

Thermal envelope area: 730 m2

Blower Door Result: 0,6 n50

Heating Demand: 20 kWh/m2·a

Cooling Demand: 1 kWh/m2·a

Primary Energy Renewable consumption (EPR): 72 kWh/m2·a

Final Energy consumption: 43 kWh/m2·a

Renewable energy generation: 74 kWh/m2·a

CO2eq emissions: 23 kg/m2·a

Caldes de Malavella: Passivhaus Classic home

ideadmin on 30 September 2024

Caldes de Malavella: Vivienda Passivhaus Classic

Description Single-family home that has achieved Passivhaus Classic certification, designed by architects Enrique Villavieja Martínez and Eva García Sayago, certified by Oliver Style from Praxis Resilient Buildings, and built by Ismael Fernández Ruiz from BYKO Sustainable Project and Construction Management. The home has a Treated Floor area of 132 m2 and is built with a …

Caldes de Malavella: Passivhaus Classic home

Passivhaus Certification, building physics, Blower Door airtightness testing

Description

Single-family home that has achieved Passivhaus Classic certification, designed by architects Enrique Villavieja Martínez and Eva García Sayago, certified by Oliver Style from Praxis Resilient Buildings, and built by Ismael Fernández Ruiz from BYKO Sustainable Project and Construction Management.

The home has a Treated Floor area of 132 m2 and is built with a cellular concrete construction system in floors and walls, and a lightweight timber roof system with mineral wool insulation.

Windows consist of PVC frames with triple low-e and solar control glazing and external roller blinds. Heating and cooling is provided by an all-in-one Passivhaus certified Panasonic Aquarea J series 7kW air-to-water heat pump with ducted indoor fan coils. Domestic Hot Water is generated by the same heat pump. A Zehnder ComfoAir Q350 ERV unit provides balanced mechanical ventilation with heat and moisture recovery. The house has a PV system that produces 6,800 kWh per year.

Links:

PEP (Plataforma Edificación Passivhaus)

iPHa (Base de datos internacional de proyectos Passivhaus)

Year: 2023

Location: C. Consell, Caldes de Malavella, Girona, Spain

Architecture: Enrique Villavieja Martínez y Eva García Sayago

Services provided by Praxis: Passivhaus Certification, building physics, Blower Door airtightness testing

Passivhaus Certification Class: Passivhaus Classic

Climate zone: Warm-temperate

Floor area: 132 m2

Thermal envelope area: 618 m2

Blower Door Result: 0,5 n50

Heating Demand: 15 kWh/m2·a

Cooling Demand: 14 kWh/m2·a

Primary Energy Renewable consumption (EPR): 55 kWh/m2·a

Final Energy consumption: 46 kWh/m2·a

Renewable energy generation: 43 kWh/m2·a

CO2eq emissions: 20 kg/m2·a

Paraparamu: Passivhaus Classic, New Zealand

ideadmin on 30 September 2024

Residencia McKinlay: Passivhaus Classic, Nueva Zelanda

Description The McKinlay Residence is located in the Kāpiti Coast District, Paraparamu, on the North Island of New Zealand. The home was designed by architect Ross Bennett, with Passivhaus consultancy done by Maria Rei of eHaus, and certified Passivhaus Classic by Oliver Style of Praxis Resilient Buildings. This single-story, detached family home has a treated …

Paraparamu: Passivhaus Classic home, New Zealand

Passivhaus Certification

Description

The McKinlay Residence is located in the Kāpiti Coast District, Paraparamu, on the North Island of New Zealand. The home was designed by architect Ross Bennett, with Passivhaus consultancy done by Maria Rei of eHaus, and certified Passivhaus Classic by Oliver Style of Praxis Resilient Buildings.

This single-story, detached family home has a treated floor area of 146 m² and was built using a lightweight timber frame system, with 140 mm of Eco Knauf insulation in the exterior walls, and 210 mm of insulation in the roof. Gealan Eco certified PVC windows were used, with low emissivity argon filled triple glazing.

The blower door test for this home achieved an excellent result of n50 = 0.27 air changes per hour (ACH).

Ventilation is provided by a Zehnder ComfoAir Q350 HRV unit with whole house balanced mechanical ventilation with heat recovery. A Panasonic split system is used for heating and cooling, and a Stiebel Eltron unit produces domestic hot water. Passivhaus certification was carried out by Praxis Resilient Buildings.

Links:

iPHa (Base de datos internacional de proyectos Passivhaus)

Year: 2022

Location: Datum Way, Paraparamu, New Zealand

Architecture: eHaus – Ross Bennett

Services provided by Praxis: Passivhaus Certification

Passivhaus Certification Class: Passivhaus Classic

Climate zone: Warm temperate

Floor area: 146 m2

Thermal envelope area: 558 m2

Blower Door Result: 0,3 n50

Heating Demand: 15 kWh/m2·a

Cooling Demand: 0 kWh/m2·a

Primary Energy Renewable consumption (EPR): 47 kWh/m2·a

Final Energy consumption: 33 kWh/m2·a

Renewable energy generation: 0 kWh/m2·a

CO2eq emissions: 18 kg/m2·a

El Refugi: Passivhaus Classic Single Family Home

ideadmin on 13 September 2024

Developed by Rotllada Immobiliaris, designed by architect Rossend Prat Ribera, with site supervision by Technical Architect Àlex Vidal, Praxis has carried out Passivhaus Design

El Refugi: Passivhaus Classic Single Family Home

Passivhaus Consultancy

Description

Developed by Rotllada Immobiliaris, designed by architect Rossend Prat Ribera, with site supervision by Technical Architect Àlex Vidal, Praxis has carried out Passivhaus Design, Blower Door tests, thermal bridge calculations and HVAC system design for this single-family home that has achieved Passivhaus Classic certification.

With a treated floor area of 104 m², the walls and roof of the home are built with a lightweight timber frame structure, 140 and 220 mm thick respectively, with mineral wool between studs and beams. The exterior walls have a ventilated façade system.

The windows consist of PVC frames, with triple low-e argon filled glazing and exterior blinds. Heating and cooling are supplied by an air-to-water heat pump, DeDietrich Strateo, with ducted indoor fan coil units. Domestic hot water is produced with the same heat pump. Balanced whole-house mechanical ventilation is provided by a Siber sensible heat recovery unit.

Links:

PEP (Spanish Passivhaus Association)
iPHa (International Passivhaus Projects Database)

Year: 2023

Location: Sant Vicenç de Torelló, Catalunya, Spain

Architecture: Rosend Prat Ribera Arquitecte

Services provided by Praxis: Passivhaus Consultancy, building physics, thermal bridge calculations, Blower Door airtightness testing

Passivhaus Certification Class: Passivhaus Classic

Climate zone: Warm-Temperate

Floor area: 104 m2

Thermal envelope area: 443 m2

Blower Door Result: 0,6 n50

Heating Demand: 15 kWh/m2·a

Cooling Demand: 7 kWh/m2·a

Primary Energy Renewable consumption (EPR): 51 kWh/m2·a

Final Energy consumption: 44 kWh/m2·a

Renewable energy generation: 0 kWh/m2·a

CO2eq emissions: 23 kg/m2·a