What is the eco-mode setting on a boiler? is it cheaper than the normal function? If your boiler isn't functioning correctly, you don't want to wait too long to call a boiler repair service near you with these appliances, one problem can lead to another. Making an appointment is easy! Consequently, this will add to the cost of your new boiler installation our surveyors will advise on the best position for your new boiler and tell you if there will be any.