Passive House Plus in Markovo

Passive House School was the certifier of the Passive House Plus in Markovo.

The detached villa is located in the beautiful area near Markovo Plovdiv, in the Rodopi Mountains.

The goal of the team is to build a second, certified Passive House in Bulgaria that has a very attractive exterior. In this way, were combined the advantages of the Passive House standard with the trends in modern architecture.

OBERON Konzeptbau
Passive House Consultant
Engr. A. Stavrev
Passive House Certifier
Svetlin Dobrevski – Certifier at Passive House School

Certified building
Passive House Plus new build

Treated Floor Area according to PHPP
199 m2

Construction type
masonry construction

Building type
detached single-family house

Markovo, Bulgaria

Air tightness
n50 = 0.3/h

Annual heating demand
14 kWh /(m2a ) calculated according to PHPP

Heating load
13 W/m2

PER demand (Renewable Primary Energy)
34 kWh /(m2a ) on heating installation, domestic hot water, household electricity and auxiliary electricity calculated according to PHPP

Generation of renewable energy
48 kWh /(m2a ) based on the projected area

Cooling load
9 W/m2

Cooling and dehumidification demand
11 kWh /(m2a ) calculated according to PHPP

Exterior wall
Stahlbeton + WDVS Baumit mit 26cm EPS Austrotherm
U-value = 0.118 W/(m2K)


Basement floor / floor slab
Austrotherm XPS (038) 20cm

U-value = 0.144 W/(m2K)

Stahlbeton / WDVS Baumit / mit 26cm EPS Austrotherm
U-value = 0.1 W/(m2K)

Fensterrahmen aus Kunststoffprofilen mit gedämmten Hohlkammern; Dämmstoff-Einschieblinge aus EPS
Uw-value = 0.85 W/(m2K)

Verglasung im Norden:
SAINT-GOBAIN GLASS Verglasung mit Ug: 0,60, g-Wert: 0,60 44mm (4/16/4/16/4)

Entrance door
U d-value = 1 W/(m2K)

Zehder, ComfoAir350
Ventilation unit with eff. specif. HRE: 90%

Heating installation
DAIKIN Altherma thermal pump
Supply air heating

Domestic hot water
DAIKIN Altherma thermal pump
In addition, thermal solar system 14m² with a corresponding storage volume of 300 l, time-controlled circulation

More detailed information about the project you can find here.

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