...and what is the diffenence between a system boiler, combi boiler and a storage combi boiler, and which will i want. i need to heat my radiators and water.
2007-02-27 00:11:50 · 4 answers · asked by EZ 3 in Home & Garden ➔ Other - Home & Garden
The amount of kW you need in a boiler is dependant on the size of the radiators, each radiator has a kW output. If you haven't sized a heating system before, take the measurements of all your rooms, include outside wall positions, ceiling height and fabrication details (walls and floors). If you go to a reputable plumbers merchants they will size the rads and boiler for you. If you want to do it yourself you will need to buy a 'Mears Calculator' which will give the kW need for each room.
A system boiler is a boiler that has the system controls built in (i.e. pump, diverter valve etc), it will do your heating and hot water but you would need a storage cylinder for the water.
A combi boiler is a heating boiler and instantaneous water heater, i.e. when you turn on a hot tap the boiler fires up to heat the water. No storage cylinder is needed.
A storage combi boiler has a built in cylinder which will store a small amount of hot water so that when you turn on a hot tap there is 'instant' hot water.
A combi boiler (either one of the two above) is the easiest system to install if there is no existing heating system as you don't need to allocate space for an airing cupboard or put tanks in your loft.
Hope this helps
2007-02-27 01:05:10 · answer #1 · answered by Anonymous · 0⤊ 0⤋
KW in a gas boiler??? do you have any idea at all what you are asking about? KW is Kilowatts, one measurement of electricity. Has little or nothing to do with a gas boiler.
You want a combination system\storage boiler. this will do both things you need to do. I would however rethink this. get a system boiler for heat, and some of the on demand water heaters for household use. they can be gas, propane or electric. You have all the hot water you need that way, as they heat the water as it is used, but are not heating water needlessly when not in use. I do not know if they make them large enough to be adaptable to a radiator system of heat. It is possible I suppose. Hot water heat is very inefficient in the first place. You might consider doing something else. I hope you have the newer more efficient baseboard radiators and not the old big ones. They are terribly inefficient and ugly.
2007-02-27 08:32:23 · answer #2 · answered by tootall1121 7 · 0⤊ 2⤋
I have a combi boiler,it is a worcester bosch 25si.This heats a 3 bed house with 10 radiators with ease.I have had it 2 years with no probs.Gives instant hot water.I think the units they measure them with is BTU`S.Standard houses use boilers with around 80.000 btu`s .Hope this helps.
2007-02-27 09:03:17 · answer #3 · answered by ? 5 · 0⤊ 0⤋
cant answer that. you need to know sizs of house etc. get a standard boiler with a water tank that is heated by the boiler. they used to have hot water coils in them but were troublesome. hot water heat is the best heat you can have.== in my humble opinion,. i have had them ALL. and radiators are ftne. it is the baseboard that is inefficient. but people dont like to look at radiators. oh well.
2007-03-02 21:13:09 · answer #4 · answered by oldtimer 5 · 0⤊ 0⤋