This blog was posted so that somebody like yourself can see the calculations I use to calculate the cost of a shower and how the low running cost of a ShowerPower Booster certainly helps. In market research we found that most people put a very high emphasis on getting a good shower rather that just a cheap shower so we are pleased that a SHowerPowerBoosster gives an excellent shower.
The starting point is to ask what the point of a shower is and for most this is a means to quickly wash away dirt and suds. At flows less that 6 litres a minute you will spend longer in the shower and will probably use more water. At flows greater than 6 litres a minute the additional benefit of having a greater flow reduces rapidly so you spend the same time in the shower but use more water.
The cost of a shower will depend on how much water you shower with, how long you shower for, and what you heat your water with. A good shower by traditional UK standards is 6 litres a minute and this is what you need to wash suds from long hair, so lets make that a starting point.
WRightChoice Chrome Shower Head
For the purpose of these calculations I have assumed in your home your family takes 4 showers a day. A 12.5 KW electric shower is what you need to give you 6 litres a minute. Put in your own own tariff price for electricity and gas in your area if you wish.
Woman Washing Hair Under Shower
COST OF SHOWERS USING ELECTRICITY – £229.34
Water used for a 6 litre a minute shower for 5 minutes = 30 litres.
Cost of water is 30 litres at 0.1p a litre = 3p.
4 person household at 1 shower a day 365 days a year = 4x365x3p = £43.80.
For each shower:- Cost of electricity 12.2p per KW/HR so 12.5KW x 12.2p x (5/60) = 12.7p
4 person household at 1 shower a day 360 days a year = 4x360x12.7p = £185.54
TOTAL £229.34
COST OF SHOWRS USING A GRAVITY SHOWER BOOSTED WITH SHOWERPOWERBOOSTER
Water used for a 6 litre a minute shower for 5 minutes = 30 litres.
Cost of water is 30 litres at 0.1p a litre = 3p.
4 person household at 1 shower a day 365 days a year = 4x360x3p = £43.80.
For each shower:- Cost of gas 3.89p per KW/HR so 12.5KW x 3.89 x (5/60) = 4.1p
4 person household at 1 shower a day 360 days a year = 4x365x4.1p = £59.86
TOTAL £103.66
The running of a 12.5 watt Shower Power Booster for 20 minutes requires 0.0125 KW/HR so the cost of electricity to run the pump is 0.15p. Over a year the cost of running the Shower Power Booster will be 55p.
SAVING £125.68 per year minus 55p to run the SPB pump.
