Washer "furring up" may be worst in the valve(s) that turn the water on and off. Change that. I tried but came up against obsolescence. Though it may have been the solenoid winding. I tried using the hot water one but that had failed long ago & I did not notice. Modern washing machines only use cold water.

My microwave was inherited from an aunt 15 years ago and AFAIK she got it second hand. The clue is the brand - Thorn/EMI (the company that gave us the Beatles). Mind you it only has to do 2 minutes a day, or 3 when I have Staffordshire Oatcakes.