All new boilers fitted by DHC Services are A rated high-efficiency appliances that comply to new building regulations that extract more energy from the same amount of gas, resulting in 20% improved efficiency and lower gas bills. If you think it's time to update your heating system, give us a call for a free, no obligation, quotation. DHC Services is a family-run business based in Stamford and Northants. Established in 1997, our engineers have been installing, repairing and maintaining central heating systems in the Northamptonshire area for over thirteen years.