Certified Group Ltd Unit 10 Hawley Road, Dartford DA1 1PX

"I absolutely recommend Aziz, Keba, Michael and Danny. If I could give them 6 stars I would. They came in to do a pretty big job - completely redoing our underfloor heating system, installing a new boiler, and reinforcing the construction of our loft. They were all so friendly and really took pride and care in what they do. And they were so tidy! While I didn't enjoy being without hot water for a few days, but they were a delight to have around!"

"Great team. Professional, friendly, efficient, know exactly what they are doing, explain things along the way, clean and tidy. Couldn't have asked for more. It was a big job - from changing the boiler, to changing flues, toilets and piping. They always turned up when they said they would, worked extremely hard and were very easy to deal with. I'd recommend them to friends and family, and they would be my go-to company for any plumbing-related issues in the future. Thanks for the great work, folks!"

"Aziz and Kebba are the superstars of the Gas Heating and plumbing world! Professional, honest and helpful beyond measure, nothing was too much for them. From the start, I got a complete breakdown and costing for my job and they kept me up to date every step of the way. They completed the job on time and within the cost that they gave me. They were clean, tidy and a genuine pleasure to have around. My heating has never been better! I really cannot recommend them highly enough."

"A friendly, helpful and professional team. They provided an excellent service. They were polite, efficient and tidy and I am happy to recommend them. They serviced the boiler and all gas appliances and replaced all the radiators. They also replaced the thermostat with one that is much easier to use and manage and were great at making sure I know how to use it! A definite 5 star team and service."

"Aziz and his team were one of the most amazing tradesmen that i have come across, they completed a full house renovation for me and I couldn’t be happier with the work that they carried out. They were punctual, polite and very tidy (which is very rare in a tradesmen). I recommend these lovely boys 100% and i will definitely be using them in the near future!"