Print: In this video a physiotherapist demonstrates gentle exercises for piriformis syndrome, a form of sciatica. The aim of these exercises is to stretch and mobilise the piriformis muscle in the buttocks and therefore to reduce the symptoms of sciatica. This video is part of a series on exercises for sciatica.
1 AGE: On average, your gas hot water heater should last anywhere between 8 to 12 years, while an electric model will last a bit longer at 10 to 15 years.  WATER: When you use your hot water tap, does the water look a bit tinted?
Now, if your familyâs needs have outgrown your water heater, it may be time to step up to a unit with a larger capacity tank even though a repair on your current one may be simple. How Long Do Water Heaters Last? As a rule of thumb, water heaters are not designed to last much beyond about 10 to 20 years (more or less). So to answer the question of how long does a water heater lastâ¦ it really depends. If you know how to flush a water heater and perform the steps once a year as well as maintain the unit according to any other manufacturerâs specifications, you can get several more years, but the tank will still fail eventually.