Wayne Miller Plumbing & Heating Specialists. As plumbers domestic, our engineers are Corgi Registered Installers. Central heating services provided include gas central heating, servicing, boiler replacements, OFTEC Oil servicing, bathroom installations, underfloor heating, oil gas and solid fuel services, boiler repairs and servicing, pressurized systems and power flushing. We provide a valuable plumbing and heating service to York, Harrogate, Leeds and all surronding areas. We also offer a 24 hour call out service.