The house that saves from heating
The implementation of the first passive buildings in Bulgaria starts in Sofia
See the whole article in the site of the "Pari" newspaper
Passive Houses in Europe in 2015
A 100 sq.m. passive house spends under 300 leva per year for heating and air conditioning
See the whole article in the site of the "Pari" newspaper
“Pari” newspaper, copy 227, 21 November 2008