Heating Services Certas Energy Reviews 

Riki Urquhart serviced our oil boiler. Extremely professional, friendly and knowledgeable. He went above and beyond, as we're new to oil, he also took me through all the key components and things to look out for. Highly recommend, thank you.

Mark Armstrong serviced my oil boiler for the first time yesterday and was informative and honest and did a professional job. What makes me give a 5* rating is Mark is a throw back to Happy and proud to do my job in a polite and friendly manner not found much is this day and age and I’m not a past looking old Grump . Certas your lucky to have him as an Ambassador and readers if your in his area you too .

Boiler Service
Mark serviced our boiler today. He has done wonders improving its reliability. Thank you.

Service of my boiler is done by Mark Armstrong for years I find very efficient and clean

Mark Armstrong from Certas has been servicing my boiler for many years. I would highly recommend him for being efficient and polite. He always cleans the boiler and floor area and double checks everything is OK before he leaves.

Our elderly boilers were treated to another Mark Armstrong 5-star service giving us confidence of their best performance through the next winter.
Efficient, effective and cheerful, Mark continues to do us proud.
Great job sir, thank you.

Explained the work step by step. Just got on with the job .

Oil boilers are complex beasts and need a good engineer who is thorough and detailed. Mark Armstrong of Certas has been servicing our boiler for many years. He is a superb engineer and combines his expertise in the field with a warm and friendly personality- the personal touch is very welcome. I look forward to our annual boiler service as I know Mark will fix it and also make me laugh. A top man. Certas you are lucky to have him. Many thanks.

George serviced my boiler, explained everything, was neat, polite and on time.

Excellent service

Mark Armstrong has been servicing our boiler for many years, it is an old boiler but he keeps it in tip top condition, he is very knowledgeable,polite and cheerful. Thankyou for your years of service, can’t recommend highly enough.

Mark Armstrong has carried out the maintenance of our oil fired boiler for many years. His level of service and technical expertise are of the highest standard - I rate him exemplary.

It is such a relief to know that I have a truly professional company to keep my boiler and tank in good condition- I have used smaller companies in the past which are no comparison regarding service, support and reliability. My sincere thanks to your customer support and to the engineer who worked here today, Mark Armstrong. I will be using Certas for sure from now onwards.

Mark sorted out my Aga so that it is now working brilliantly. He services and keeps it running smoothly so I don’t have to worry about it.

Very professional from start to finish- very happy with the engineer Gareth Thomas who visited today- answered all my questions and had a professional manner

We have complete confidence in in Mark Armstrong from Certas. He has serviced our boiler for many years, and is dedicated to the job.
Six stars!

Our service engineer (Philip) was punctual and thorough in his service of our 8 year old oil boiler. He explained what he was doing and relevant details about the service results. I was impressed with the service provided by Certas.

Riki Urquhart rang in advance and arrived promptly. Very efficient and professional

Professional and friendly service. Always reliable and trusted. Thanks Mark Armstrong.

We have used CERTAS to service our Rayburn annualy for a number of years and have no intention of changing this. From our initial contact with head office to completion of the service CERTAS are efficient, professional and trustworthy.
We have been fortunate enough to have always had Mark Airey do the maintaintenance on our Rayburn. Mark arrives on time, is tidy, competent and highly knowledgeable. All of which gives us a reassuring level of confidence.