OTHER DOMESTIC STOVES OR RANGES; DETAILS OF DOMESTIC STOVES AND RANGES, OF GENERAL APPLICATION (radiator stoves of the fluid-circulating type Fulltext... Hierarchy... Expanded...F24H)
In this sub-class: The following terms are used with the meanings indicated:
"Air-conditioning" means the supply of air to rooms or spaces by means which provide for the treatment of the air in at least two of the following ways:
heating,
cooling,
any other kind of treatment, e.g. humidification.
"Ventilation" means the supply of air to, or its extraction from, rooms or spaces, and systems for circulating air within rooms or spaces, but does not cover the mere heating of rooms or spaces by the supply of heated air. The supply or circulation systems may include means for cooling the air or for treating the air in any other way than cooling or heating.
In this sub-class: The term "heater" refers not only to the heat-producing apparatus but also includes the apparatus by which heat is transferred to water or air.
PRODUCING HEAT, USING HEAT, OR HEATING, NOT OTHERWISE PROVIDED FOR (engines or other mechanisms for producing mechanical power from heat, see the relevant classes, e.g. Fulltext... Hierarchy... Expanded...F03G for using solar energy)