Biotech Energietechnik GmbH – Heizen mit Biomasse » PRODUCTS » Wood log heating Wood log heating HVZ 25/32/34/45/46L HVZ Pro 35 HVZ Pro 55 HVZ Pro 80 write us an e-mailoffice@nullbiotech-heizung.comcall us now+43 (0)6235 / 50 210-0go to our contact formNon-binding appointment?