Find out how much you can borrow, what your monthly repayments will be and more. With plumbing service from einstein's plumbing & heating, inc., you’ll avoid needless interruption and enjoy optimum plumbing system operation. Tens of thousands of aviva customers to be refunded up to £100. If you are replacing your boiler for a new heating system, the old one may have some sale value which we will credit to the replacement project budget. Did you.