About Us Are you looking for an expert gas engineer St Helens? HPH Property Maintenance Ltd have been replacing and repairing heating systems for our clients for years. Our experience is complemented by the personal touch we offer. Maybe that's why so many property developers and home owners use us time and time again. So whether you simply need to update or replace your whole heating system or old boiler, our expert gas engineers are here to help you. Why not read more about us, and the services we provide?