Survey on Households and the Environment Percentage of dwellings, by type of home and available heating system Units: % over the total number of dwellings Availability of heating Electrical heating: Total Electrical heating: Individual electrical furnace Electrical heating: Electrical radiators and accumulators Electrical heating: Underfloor heating Gas heating: Total Central gas heating Individual gas heating Non-channelled gas heating Central diesel heating : Total Central diesel heating Individual diesel heating Other heating systems: Total Other heating systems: Heat pump: Total Heat pump: Channelled Heat pump: Non-channelled Other heating systems: Coal central heating Other heating systems: wood TOTAL 70.3 18.6 4.6 14.0 0.7 32.3 6.6 23.4 2.5 11.7 7.0 4.8 12.8 6.3 2.3 4.0 0.5 2.8 Single-person Household 63.1 18.2 4.4 13.8 0.9 29.9 6.1 20.6 3.4 8.8 4.8 4.0 10.4 4.2 1.4 2.8 0.5 1.9 Couple alone 71.9 18.7 4.8 13.9 0.8 33.2 6.9 24.2 2.5 12.0 7.2 4.9 12.8 6.7 2.6 4.2 0.5 2.8 Couple with children 75.5 18.9 4.6 14.2 0.8 34.9 7.0 26.2 2.1 12.9 7.9 5.1 14.5 7.6 2.7 5.0 0.5 3.0 Father or mother alone alone with at least one child 68.5 18.9 4.5 14.8 0.6 31.8 6.2 22.9 3.0 11.1 5.8 5.2 11.8 5.7 1.9 3.8 0.3 1.8 Another type of household 60.9 18.1 4.5 13.5 0.5 25.3 6.1 17.0 2.5 11.9 7.6 4.4 11.3 4.5 2.1 2.4 0.5 3.7 Notes: Source: National Statistics Institute