Whilst The Sleep Council recommends that a bed is changed every 7 years a quality bed should last for 10 years. A Hypnos bed comes with a 10 year guarantee. However it is important that your bed is judged on how comfortable and supportive it is for both you and your partner and not on its age. Regular mattress replacement every 7 years will also reduce the build up of asthma-triggering dust mites which love mattresses because we each lose around 285ml of fluid each night and shed 454 grams of dead skin cell each year. Pillows need to be replaced more often !