all boilers are repairable
the only restriction is your budget
''boiler 3 years old''
how long was the manufacturers warranty?
most manufacturers offer a minimum of 5 years warranty
which part did he say was leaking?
find out how much the part costs
shop around for quotes from other gas engineers to replace defective parts
you could also go for a fixed price repair from the big players in the market
British Gas etc
you can also try calling ravenheat direct & asking them
Q, March 2014