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