Knowles Plumbing and Heating are a York based firm with Customer Service and satisfaction at the forefront of what we do. Our highly motivated, customer orientated team of engineers will arrive when arranged, dressed in uniforms and complete the required work. Engineers carrying out gas work will have an up to date Gas Safe ID card. More than 80% of Knowles weekly jobs come from customers who have used the company before. In fact some customers, who first used Knowles 20 years ago, are still usi - Read more