A typical electric hot water tank may have about 5cm thickness of fiberglass insulation built in.
Insulated hot water tank.
This then means that it requires more energy for the boiler to re heat this water in order to ensure that you have a hot shower when you get in from work.
Water is a convenient heat storage medium because it has a high specific heat capacity this means compared to other substances it can store more heat per unit of.
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Hot water tank heater insulation jacket diy premium kit energy saving reflective foil fits 40 gallon 180 litres.
Assuming you will be insulating the outside of the tank with a similar material the power consumption to maintain a given tank temperature will be inversely proportional to the total insulation thickness.
And all tank designs are available in 316l or 2205 duplex stainless steel not available in 40 50 80 80a 120 120a or 200 gallon.
If you have an older hot water tank check to see if it has insulation with an r value of at least 24.
If not consider insulating your water tank which could reduce standby heat losses by 25 45 and save you about 7 16 in water heating costs and should pay for itself in about.
If your water tank is new it is likely already insulated.
Reach barrier 3016 water heater insulation kit.
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The tank is where your hot water gets stored after being heated by the boiler and if it is poorly insulated it will lose heat much quicker.