Marshallgas Reviews 5

TrustScore 3.5 out of 5

3.4

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3.4

Average

TrustScore 3.5 out of 5

5 reviews

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Rated 5 out of 5 stars

This is our 2nd positive experience…

This is our 2nd positive experience with this company! Our boiler was banging and bringing up an error code. They had a cancellation and came out within the hour. Josh knew exactly what the problem was just by us explaining, he was super friendly, knowledgeable and fixed our boiler without any hassle at all. He went off, got the part and fixed it in no time. So impressed. Definitely will use again and highly recommend MarshallGas. Thank you Josh

May 29, 2026
Unprompted review
Rated 1 out of 5 stars

I wish I had checked on here before…

I wish I had checked on here before using this company. Their unprofessional advice and service has left me and my children (all disabled) without a properly functioning heating and hot water system. Have to now start an investigation through AHPC and recovery through the courts.

October 14, 2025
Unprompted review
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Reply from Marshallgas

Marshall Gas Ltd followed its documented complaints procedure in full.

The property was attended, findings were issued, and the customer was then signposted to an independent third-party dispute resolution body, in line with industry best practice and our regulatory obligations.

The matter is no longer within our internal complaints process, and any further investigation or outcome now sits with the third party referenced. This was clearly explained to the customer in writing.

We refute any suggestion that the complaint was ignored or handled unprofessionally. Due to confidentiality, we cannot comment further on individual circumstances in a public forum.

— Marshall Gas Ltd

Rated 1 out of 5 stars

One to avoid!

One to avoid!

My experience with Marshall Gas, from their recommendation of an unvented system to the installation, was both extremely stressful and profoundly disappointing.

From the outset their 2 installers displayed a total lack of professionalism. They failed to use protective coverings during their work, which led to carpet damage, including burn marks from soldering, and even left my front door wide open when they left on their breaks. When they left after installation I was beset with problems. There was constant pipe banging, taps became inoperative when others were in use, and the pipework leaving the cylinder was not installed the way I was told it would be done.

When I raised these concerns with Marshall Gas, they explained that complaints had also been raised by previous customers about these very installers, who they were now in the process of dismissing. This revelation was deeply concerning as I could not understand why installers with complaints against them had been assigned to my project.

I made continuous efforts to resolve the issues by working with representatives Steve and Jo. Although they initially responded with understanding and empathy, they were unwilling to rectify all the problems and my frustration continued to grow. Steve even advised that in his opinion the banging was the result of a loose pipe and I should pay for a plumber to find it and secure it! After months of little progresses Marshall Gas advised that if I remained dissatisfied, I should refer the matter to the Association of Plumbing and Heating Contractors (APHC) which I did. The independent assessor sent out by APHC found that essential water pressure checks had not been performed prior to the installation which was the reason for many of my issues and what I was left with was unsuitable for my house in its existing set up. They suggested a number of solutions and even including the removal of the system and going back to the original gravity fed system.

The APHC process dragged on for months with endless back-and-forth so finally I escalated the situation by filing a claim with my credit card company under Section 75 of the Consumer Credit Act. Unsurprisingly, after they had carried out their own investigation, they ruled in my favour and now after a year of stress I am able to arrange for another company to come and put right the issues Marshall Gas left me with.

While some may have had different experiences, mine has left me with serious reservations. I feel compelled to warn prospective customers to proceed with caution when considering Marshall Gas for their installation needs.

June 18, 2025
Unprompted review
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Reply from Marshallgas

Dear Mr Powell,

We are sorry that your experience with Marshall Gas did not meet your expectations. However, we strongly refute the suggestion that we were unwilling to engage with you or resolve matters properly. In fact, we spent a significant amount of time in written correspondence with you, involving both internal discussions and third-party mediation via the Association of Plumbing and Heating Contractors (APHC), to address your concerns thoroughly and fairly.

It’s important to make clear that at no point did we refuse responsibility for investigating the issues. We acted on your feedback, provided support during and after the installation, and followed correct procedure by referring the matter to the APHC for independent technical assessment. Their involvement was welcomed by us as a neutral means to assess the situation professionally and objectively.

We must also clarify a key point: after many months of dialogue, you chose to escalate the matter via your credit card provider under Section 75 of the Consumer Credit Act. When the card provider ruled in your favour, you received a refund. Following this, you continued to pursue further financial compensation from us directly.

As we explained at the time, pursuing dual compensation—via both a Section 75 claim and a separate financial settlement with us—is not permissible. We were advised to seek legal clarification before proceeding further, and we requested that you provide written confirmation from your card provider stating that they would not seek to recover funds from us should a secondary settlement be agreed. You were either unwilling or unable to provide that assurance, which left the matter unresolved from our side.

We understand your frustration and are sincerely disappointed that the situation escalated in this way. We do not assign blame lightly and always aim to improve based on feedback. Nonetheless, we also have a duty to act with integrity and protect our business from duplicate claims.

We now consider this matter closed and will not be engaging further unless required to do so through formal legal channels.

Kind regards,
Marshall Gas Ltd

Rated 5 out of 5 stars

Who can you trust to do a good clean quality job, MARSHALLS

After our Ideal Mexico standard heat boiler had run without fault for 27.5 years we thought we would get something more economical a condensing boiler. We set of on our new boiler journey with 5 quotes but who do you trust?
Finally we selected Marshalls and set up a visit from their sales team.
First point to make the engineer was spot on time, very polite and suggested we could save money by replacing our floor standing boiler with a wall mounted one in a better location. The engineer left and produced his quotes as promised.
After consideration we agreed with him it would be a better idea to reposition on the wall thus saving space in our garage so another quote was produced.
Finally we submitted our deposit and shortly after Mr Marshall contacted us with an install date.
Now we were nervous as only a week before this we had one of our rented properties fitted with the same type of boiler but using a different installation company, NOT Marshalls and what a mess they left.
The installation day arrived and precisely on time two smartly dressed gas engineers along with Mr Marshall, just like a military exercise.
They suggested the best boiler position and pipe routes for us to agree before commencing to remove the very heavy old boiler.
Boiler removed using a sack barrow and dust sheets laid ready for the repair of the single brick wall in the garage using the correct white cement with lime and yellow sand, what a perfect job done, mess cleaned up.
Mr Marshall using the boiler template taped to the wall agreed with us again the new boiler position including the flue outlet.
The gas engineer ex sub mariner and his apprentice soon core drilled a perfect 125mm hole through the wall and proceeded to fit the new boiler again at each step asking us if we were happy with what was proposed. This gave us more confidence and the pipe work was soon installed very neatly allowing for the correct depth of insulation clearance all around the pipes.
On completion the additional wiring was also now in and the system flushed, cleaned to drain. After air locks in the system were removed the inhibitor was added giving us system protection for corrosion.
Next morning the gas safety certificate arrived by email.
The team on a hot summers day worked tirelessly, on time, polite, conscientious, and with quality workmanship cleaning up after themselves.
Now we happy as on this occasion our minds are at rest,
many thanks to Marshalls and their merry band of men. We would recommend them again.

June 23, 2023
Unprompted review
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Reply from Marshallgas

Thank you

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