Whatever you’re looking for, you’ll find the solution with us at ctc. Not a fan of the phone? got a question or need a quote? Swale heating are industry leaders in boiler installations, maintenance and repairs in domestic properties across folkestone with over 40 years of experience and a portfolio that covers over 100,000 properties, we are the first company you should consider if you are looking for a new boiler install in folkestone. Oil-fired.