Got a tip, kitchen tour, or other story our readers should see? Most boiler issues come down to weighing the costs and benefits of repair versus replacement repairs typically cost between. Thanks for printing! don't forget to come back to delta plumbing for fresh articles! If we unblock your drain and we don’t find or suspect that there is a fault, we are happy to return free of charge if the same drain blocks again within days. Brilliant news, thanks everyone! Choose a new boiler from.