Type of heating​

Fuel measurement

Fuel heat value, W

Average COP (coefficient of performance)

Natural gas boiler

m³

9350

0,93

Condensing gas boiler

m³

9350

1,08

Propane boiler (cylinders cassette)

kg

13960

0,93

Liquid gas boiler

kg

13960

0,93

Electric heating (tubular heating element boiler, infrared heater, electrical oil heaters, cable and film heaters)

kWh

1000

0,8 – 0,99

Ion boiler (heater) STAFOR

kWh

1000

1,57

Geothermal heat pump with underfloor heating​ *

kWh

1000

4,5 *

Geothermal heat pump with radiators​ *

kWh

1000

3,4 *

Air heat pump​ *

kWh

1000

2,0 *

Steel wood boiler

assambled m³

2080000

0,7

Cast-iron wood boiler

assambled m³

2080000

0,55

Pellets boiler/burner

kg (8% hymidity)

5000

0,85

Steel coal boiler

kg

7500

0,75

Cast-iron coal boiler

kg

7500

0,65

Diesel boiler

ltr

10000

0,9

Grain boiler (pellets boiler)

kg (12% humidity)

4000

0,85