Survey on Households and the Environment 
Classification by characteristics of the dwelling
Percentage of dwellings, by size of the dwelling (no. of persons occupying it) 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;
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;
1-person dwelling;63.0;17.9;4.2;13.6;0.9;29.9;6.1;20.6;3.4;8.9;4.9;4.1;10.5;4.3;1.4;2.9;0.5;1.9;
2-person dwelling;70.6;19.2;4.7;14.5;0.7;32.3;6.4;23.4;2.7;11.7;6.8;5.0;12.5;6.3;2.5;3.8;0.5;2.7;
3-person dwelling;71.2;18.9;4.8;14.3;0.7;32.9;6.6;24.2;2.3;11.6;7.2;4.5;13.0;6.6;2.6;4.1;0.6;3.2;
Dwelling with 4 or more persons;73.6;18.4;4.6;13.7;0.7;33.4;7.2;24.6;2.0;13.5;8.3;5.3;14.4;7.3;2.4;4.9;0.5;3.0;
Notes:
Source: National Statistics Institute