Excerpt: Heating system renovation in single-family homes
In most cases, the entire boiler room is renovated when a building’s heating system is refurbished. Typical renovation measures include replacing the boiler with a more efficient new unit, switching to renewable fuel sources, and installing solar thermal and fresh water technology.
ratiotherm in a single-family home
Detached house, 350 m²:
Before the renovation was carried out:
- Boiler 35 kW
- 300-liter boiler (hot water tank)
- Radiator and underfloor heating
- Annual energy consumption: 4,500 liters of heating oil
Energy savings after renovation: approx. 40%
Measures implemented:
- 28 kW oil condensing boiler installed
- Oskar° 1000-liter stratified storage tank installed
- Fresh water station with high-efficiency pump installed
- 6 Oskar-Sol RA251-4 solar thermal collectors (15m²) installed
- Heating circuits installed with high-efficiency pump and electronic mixer
- Hydraulic balancing performed
- rZR16x2 central controller installed and programmed as higher-level intelligence
- Water treatment plant installed
Detached house, 210 m²:
Before the renovation was carried out:
- electric central heating
- 250-liter electric boiler (hot water tank)
- underfloor heating
- Annual energy costs for heating: 4,000 euros
Energieeinsparung nach Sanierung: ca. 50 %
Measures implemented:
- 16 kW gas condensing boiler installed
- Oskar° stratified storage tank 1300 liters installed
- Fresh water station with high-efficiency pump installed
- 5 solar thermal collectors (12.5 m²) installed
- Heating circuits installed with high-efficiency pump and electronic mixer
- Hydraulic balancing performed
- rZR16x2 central controller installed and programmed as higher-level intelligence
- Water treatment plant installed
Detached house, 200 m²:
Before the renovation was carried out:
- Oil boiler 28 kW
- 200-liter boiler (hot water tank) underneath
- radiator
- Annual energy consumption: 3,000 liters of heating oil
Energieeinsparung nach Sanierung: ca. 40 %
Measures implemented:
- 20 kW oil condensing boiler installed
- Oskar° stratified storage tank 2500 liters installed
- Fresh water station with high-efficiency pump installed
- Oskar-Sol RA251-4 solar thermal collectors mounted at a 45° angle
- Heating circuits installed with high-efficiency pump and electronic mixer
- Hydraulic balancing performed
- rZR16x2 central controller installed and programmed as higher-level intelligence
- Water treatment plant installed
Detached house, 180 m²:
Before the renovation was carried out:
- Boiler 25 kW
- 200-liter boiler (hot water tank)
- radiator
- Annual energy consumption: 4,000 liters of heating oil
Energieeinsparung nach Sanierung: ca. 45 %
Measures implemented:
- 28 kW oil condensing boiler installed
- Oskar° 1000-liter stratified storage tank installed
- Fresh water station with high-efficiency pump installed
- 6 Oskar-Sol RA251-4 solar thermal collectors (15m²) installed
- Heating circuits installed with high-efficiency pump and electronic mixer
- Hydraulic balancing performed
- rZR16x2 central controller installed and programmed as higher-level intelligence
- Water treatment plant installed
