S M H Gas Specialist
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S M H Gas Specialist
A Father and Son team of two, we are both Gas Safe registered, have full public liability and have built up 65 years' worth of experience between us. As well as extensive expertise, we're full of enthusiasm for the job and believe in building long-term working relationships. We've invested in the most effective equipment so we can carry out our work efficiently, including a thermal imaging camera and a top quality powerflushing unit.

We pride ourselves on our tidy pipework and always clean up carefully after ourselves. Our excellent reputation means we do not advertise, so you won't find us on many internet portals. We've always relied on our established customer base for recommendations. We are Worcester-Bosch accredited installers and are recommended by Worcester-Bosch on their website for the Banbury area.
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Based in Bloxham, Banbury, we are fully qualified Gas Safe registered engineers with decades of experience under our belts. Reliable and meticulous, SMH Gas Specialist pride ourselves on our professional approach, exceptional customer care and competitive prices. We keep up to date with all the latest training requirements and work with most brands.
Choosing SMH Gas Specialist means you are choosing an expert team. We're accredited by Worcester Bosch based on the advice we provide, product knowledge and quality of installations. This means that we can offer you a range of additional benefits including extended guarantees of up to 12 years. At SMH Gas Specialist, we're great believers in long term value.
We'll design your central heating system with your exact requirements in mind. With careful consideration of the size of your property, water consumption and lifestyle, we'll run detailed heat loss calculations so we create the optimum system. Then we'll build it with robust, quality materials for longevity and value.
If it's been a while since you had your boiler serviced, or your radiators aren't as warm as you'd like, we'd thoroughly recommend you get in touch. We can service most makes and model of boiler (we've carried out over 10,000 boiler services in our time) and can powerflush your system - no problem.
It is recommended by boiler manufacturers that every heating system is thoroughly flushed every 10 years - or at least along with every boiler replacement. This is particularly important in 'open-vented' systems.

Corrosion in the system can lead to early boiler and component break down and manufacturer's guarantees are not valid on faults that develop due to system corrosion - so avoiding them is key and regualr Powerflushing is the simple solution.A build up of corrosion can lead to sluggish radiator heat up times and costly gas bills due to system inefficiency.
Reviews (6)
Cristine Smith
Cristine Smith
Aug 27, 2021
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Turned up on time.steve and son Mark.friendly guys.they covered every area and stairs too.we had new boiler for heating and 3 new radiators and some of old ones had to have somethings altered but all well done.we also had a new waterheater in as prefer to keep it separate from heating one.everything professionally done..would recommend these guys anytime.
Mark Saunders
Mark Saunders
Feb 01, 2021
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Positive: Quality, Value
Steve and Mark have just installed a new boiler and 7 radiators. Great quality work. A professional father and son team who have installed a high quality system under a 10 year guarantee. They explained clearly the new system and how to get the best from it , I could not have asked for a better service.
Hollie Press
Hollie Press
Aug 21, 2020
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Positive: Professionalism, Punctuality, Quality, Responsiveness, Value
SMH are brilliant, and we can't recommend them highly enough. We first used them to do a complete refit of our heating, water, and gas when renovating our house, and have used them for every job since, big and small. They're professional, personable, and always reliable.
Jo Abbott
Jo Abbott
Jan 28, 2020
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SMH installed my boiler a few years ago and have serviced it annually since then. Mark, Steve and team are friendly, reliable and quality of work is excellent. Highly recommend.
Conrad O'Brien
Conrad O'Brien
Nov 10, 2019
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5 stars
My Girlfriend and I used SMH Gas Specialist to replace our boiler which had broke.
From start to finish they were unbelievably helpful. They gave us quotes for all the options with everything listed that was included with a list of optional extras. They called us to explain them and we agreed on the quote and extras that we wanted.
We booked them in, and they called us a week before to confirm we were still happy with the agreed days and that we still wanted the extras that we talked about.
They were prompt, clean and tidy, explained everything they were doing, and couldn’t have been
Roslyn Young
Roslyn Young
Jun 11, 2017
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Highly skilled, vastly experienced and with up-to-date training, intelligent and knowledgeable, reliable and decent, fair and trustworthy, respectful and tidy engineers. Attention to detail when 'making good'. Quality products sourced and installed. Choose this company with confidence. I recommend them all the time with 100% commitment. They installed my total central heating system and it is regularly serviced. I know it is in safe hands and have total peace of mind.