<ul><li>Specialist Zip Boiler Engineer&nbsp;attended&nbsp;site on 15th September to&nbsp;service and descale Hydro Boiler.</li><li>Engineer descaled hot tank and&nbsp;replaced the element, thermostate,&nbsp;tap assembly and gasket.&nbsp;</li><li>Site left clean and tidy.</li></ul><p><strong>Breakdown</strong></p><p>Labour: &pound;246.00</p><p>Materials: &pound;253.22</p><p>Our total cost to carry out the above works in normal working hours shall be</p>