Boiler installation, repairs and servicing. Feeling the chill working on the farm? visit. We’ve helped over 130,000 people. Registered in england no: 2489546 vat registration number: 408556737. One major independent firm of plumbers said that over the past three to four years it has made thousands of call-outs to mend condensing boilers, and that the greenhouse gas emissions from its vans were probably greater than the.