Where to Put the Boiler

Boilers have tended to occupy a traditional position in the kitchen, taking up valuable floor space. Some modern gas boilers are very small, hold very small quantities of water and can be hung on walls, fitted in cupboards or even fitted on outside walls. All heating systems require some form of controls. The small low-water content gas boiler usually requires a moderately sophisticated control system, which provides considerable efficiency and economy in operation.

Full or part?

Central heating may be said to fall into four general categories-full, partial, background and zoned heating. Full central heating means that desired comfort levels are maintained when the ambient (all-round) temperature outside the home is 1°C. In both partial and background heating, other appliances must be used to maintain the required levels of comfort.

Background heating, though supplying some level of comfort in various parts of the home, assumes that topping up is needed at various times of the year and in certain rooms. This level is usually around 12.8°C.

Partial central heating includes background heating but is not restricted to this. It may mean that all rooms are partially heated to a standard lower than that for full central heating or background heating, or it may mean that some rooms have no heating at all. This also assumes that some leakage of heat from one room to another takes place.

Background heating applies to the standard of heating provided, while partial heating may refer either to the standard of heating or to the fact that only certain rooms are heated at all.

Both partial and background heating, provided there is sufficient capacity to meet extra demand, may later be extended to provide full central heating.


Zoned or selected central heating falls between the two previous definitions. Here the boiler or heat-producing appliance lacks the capacity to heat the entire house at one time and the heat must be ‘zoned’ to those rooms of maximum occupation at a given time, such as living rooms by day.

Controls are frequently employed to perform this zoning function, which can either be automatic or carried out manually, by switching in or out various radiators or convectors.

While all systems take account of the transfer of heat between various parts of the home, methods other than full central heating have limitations, since the essence of effective central heating is to heat adequately both the space and the fabric of a structure.

Topping up

Making up lost heat uses less energy than to restore a considerable loss of fabric and space temperature, as a result of switching the system out completely for periods during the day and at night. It is best to operate the heating system at a lower temperature during such times, as it will prove cheaper to top up the system to the optimum temperatures than heating completely from ‘cold’.

10. November 2011 by admin
Categories: Featured, Handyman Tips | Tags: , , , , , , , , , | Comments Off on Where to Put the Boiler


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