Should home-buyers have a professional plumbing inspection done? Halsall heating is a trading division of cpl heating and plumbing ltd. Is drain out bathroom septic safe? It doesn’t necessarily mean a whole new system is required, there are many reasons for any central heating system to degrade and we will advise on the best way to get your heating back to its maximum potential quickly. Is a plumber required to be insured and bonded? We do all phases of residential, and commercial.