Filling a kettle with cold water, and boiling it, or running the hot tap until the water heats up, filling the kettle with hot water, then boiling it? I have a gas powered combi boiler.
2006-10-20 21:07:57 · 12 answers · asked by andygos 3 in Science & Mathematics ➔ Other - Science
It depends on the distance between the boiler and the tap. If it is very short, so that it comes through quickly, or if you have just used hot water for something else, so that it is there already, then using the boiler is better. If it is a long way away and takes a while for the hot water to come through, then using cold water is better.
You have stated that you have a combi boiler, so the 'old' rules about not using hot water (due to it sitting around in tanks etc.) do not apply.
Time for a cuppa now, methinks...(With cold water - it takes forever to come through on my system!)
2006-10-22 06:17:44 · answer #1 · answered by Trevor P 2 · 0⤊ 0⤋
I think boiling the water on a gas stove is both cheaper and more environmentally sound.. but from your two choices in terms of energy use, provided your hot water boiler is already running and doesn't have to start, it's putting hot water in the kettle and boiling that.. BUT.. you shouldn't really drink water coming from your hot tap as it has sat in your hot water tank and has been circulated through pipes so may be contaminated.
2006-10-21 00:49:52 · answer #2 · answered by blue_cabbage 2 · 0⤊ 0⤋
filling a kettle with cold water and boiling it is much cheaper because it takes a while sometimes for the tap water to be hot. you would be wasting a lot of water until you get that hot water. And if you boil a large kettle of cold tap water, you can save the rest in the refrigerator. none of it went to waste but will be used later.
2006-10-20 21:22:07 · answer #3 · answered by Fiona 2 · 0⤊ 0⤋
hmmm well its actually healthier to put a cup of cold water in your kettle (just enough for one) and boil it instead of using water from your boiler as that water is constantly reheated and not to correct temperatures for ingestion, it is also environmentally friendly to only fill the kettle with enough water to use instead of filling it right up and wasting and also leaving your tap to run to get to water you think is hot enough is also a waste of natural resources so overall just fill the kettle with enough water to make the tea or coffee or whatever it is you want it for and you will be doing the world a big favour and saving money in the meantime.
2006-10-20 21:26:54 · answer #4 · answered by ? 2 · 0⤊ 0⤋
boiling a kettle is a massive use of energy, it will stall a generator that runs cement mixers easily, so using warm water is the best option, when you take the water out the boiler needs to do very little work to heat up the water
2006-10-20 21:12:18 · answer #5 · answered by orfeo_fp 4 · 0⤊ 0⤋
fill the kettle with hot water than put in on gas boiler it will be economical
2006-10-20 21:11:24 · answer #6 · answered by sunny k 2 · 0⤊ 0⤋
Domestic Hot Water is not really meant to be consumed. It has stood around in tanks that could have God Knows What in them, been heated, run through pipes of differing materials, and it's revolting. The only truly potable water is cold water, direct from the rising main.
2006-10-20 21:27:58 · answer #7 · answered by Phish 5 · 0⤊ 0⤋
Much cheaper and environmentally better to drink a cup of cold water - don't run your cold tap any more than needed to put the water you are going to drink into the cup - re-use the cup.
Best of luck - Mike
2006-10-20 21:44:33 · answer #8 · answered by Anonymous · 0⤊ 0⤋
It might be cheaper to use the hot water, but the hot water may have heavy metals in it from your water heater. Using cold water and heating it up on the stove is healthiest.
2006-10-20 21:17:06 · answer #9 · answered by Wingaddict 2 · 0⤊ 0⤋
use cold water and boil the kettle
2006-10-20 22:10:14 · answer #10 · answered by Anonymous · 0⤊ 0⤋