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?
An average water heater tank lasts about 10 years. If youâre not sure whether to repair or replace a water heater, a good rule of thumb is to never spend more than half the cost of replacement on a repair. According to our hot water heater installation price guide, the cost to replace a hot water heater is $850. Therefore, if your repair bid comes in above $425 and your hot water heater is more than seven years old, you may want to consider replacement versus repair.