Don has helped me with numerous leaks and other plumbing problems when it's an emergency, he works hard to get us on his schedule promptly we really appreciate his great work ethic and honesty! Asp kw phases output connection. Be entered into our monthly prize draw when you sign up for newsletters! If you need to replace the "brains" of your boiler - a printed circuit board - you will be looking at paying £ on average. Is made of high grade stainless steel and has a fire tube design.