There are actually several things that you should know concerning hot water storage systems and how they function. Every homeowner needs to know how the appliances in their home function, and they need to know the basics of repairing them.
We can never be certain when appliances like these may completely malfunction, or need a slight adjustment. If however, we know enough to give our appliances proper maintenance, then we may be able to troubleshoot the problem for ourselves and circumvent the need for a repairman.
One of the first things to know is what type of hot water storage system you currently have. If you know nothing about these things then here are some tips to help you determine the style you have. You can also check various water tank designs online at KlipTank.
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If you have a tank that has the words pressurized system written on it, then you have a combination system, and you do not have to drain these tanks if you are going to be away for a length of time.
These tanks are fed water straight from the main water lines that are coming into your home and they do not hold enough water for it to grow stagnant from sitting. You will more than likely never have any problems with this type of system freezing on you either.