Zak is a fantastic guy, very professional with great knowledge on boiler problems. He came to our flat in 15 minutes after I called him for help on Saturday. He fixed the problem quickly and our boiler is back to work like new. Zak is friendly and honest and works to high standard. The charge is also very reasonable compared to other quotes we got. I will highly recommend to anyone needing central heating repairs, and definitely myself will come back to Zak for any future repairs.