Reviews

Had a full boiler refit. Grand Union quoted me a better price than British Gas, and over 3 days of power flushing, fitting, and Hive setup, it was a stress free process. Connor was friendly, professional and efficient, doing all the work (on his own throughout) with zero fuss. Admin process is also great. Easy to contact Mitch or Lauren, pay invoices and get details of the work electronically. It is a very professionally run business with top notch customer service. After care service is also great and always happy to help, and their Home Cover contracts are great value. I would highly recommend Grand Union to anyone in Milton Keynes for any of their plumbing and heating needs!

Really good friendly service very helpful and informative. Was honest and genuine. On time and a very good job done.

The team at Grand Union are personable, diligent and kind. Having had work done on our house for many weeks, we built a great relationship with the team as well as having a top notch bathroom at the end of it. They've been great with snagging issues & were super flexible in the planning process too.

Mitchell of Grand Union arrived on time and rendered professional service to me.

Excellent customer service. Very friendly, professional and very good. Very polite and efficient Andy explain me everything.

Been using Grand Union for years now, always professional and provide a great service.

Again , excellent customer service. Appointment booked to accommodate my work pattern. Marco arrived as scheduled, fixed problem efficiently and left kitchen as he found it. Really can’t recommend this firm highly enough. Now, wouldn’t use anyone else for plumbing and heating needs. Wish they sorted gardens

Professional communication, transparent and honest. Hard to come across plumbs that have all three! Added bonus was fast call out and very reasonable quote.

A 5 star experience, we recently had a full air source heat pump and central heating system installed, which was a massive job. Mitch and Connor did an amazing job, they were clear and upfront about the whole process from day one, they were very thorough and careful with their work and the result is outstanding, the job has been finished to the highest quality and the care and attention to their work really shows.

communication with customers professional approach and on time this is everything what I need absolutely recommend this professionals know how to do it thank you

I recently had a new water softener installed by Grand Union Plumbing, and I’m so happy with the whole experience! After dealing with other plumbers who either said my softener was too big or suggested awkward setups that would waste space, I was fed up and decided to find a reliable company online. That’s how I found Grand Union and I’m so glad I did. From the very first call, everything was smooth and professional. They asked me to upload photos of the job, sent SMS updates when the engineer was on the way, and arrived right on time. Mitchell was the engineer who came, and he was just fantastic. He was friendly, polite, and super respectful of our home. From the very first site visit he even took his shoes off before coming in without me asking! The installation was done efficiently, neatly, and with so much attention to detail. He even wiped footprints off my tiles that he’d made after the installation! How often does that happen? He gave great advice on where to place the softener and single-handedly modified the under-sink plumbing, cut the shelf, and got everything installed perfectly. Within a few hours, our water was softened, and everything looked neat and tidy. I honestly can’t recommend Grand Union and Mitchell enough. It’s such a relief to meet someone who’s not just highly skilled but also genuinely friendly. It made the whole process so easy and pleasant. I’m even thinking of getting them to do my annual boiler check!

great professionals, Trustworthy professional fare priced. Will be using them again.

Having used Grand Union Plumbing for a few years now, I can honestly say that they are the best I’ve come across. A fantastic & efficient team, they know their stuff. I cannot fault Marco, his friendly demeanour and professionalism make every interaction a pleasure! You’ll struggle to find a more reliable and trustworthy company.

Anglian Water contacted us to say we had a leak (12-15 litres an hour). Despite searching everywhere we couldn't find it. Having used Grand Union in the past, Connor came to look, and via numerous tests and obvious experience, confirmed that the leak was actually under the tiled kitchen floor. He quickly worked out a way to re-route the hot and cold pipes which meant not having to dig up the kitchen floor, which was a godsend. Anglian Water have confirmed the leak is fixed, so all good. Fantastic service, Connor was very polite, courteous and even cleaned everything up. Very grateful, thankyou !

Had the boiler changed by Mitch. Job went smoothly, he kept me updated step by step. Mitch was professional, nice and friendly. Totally recommend.

best boiler installation company in Milton Keynes. thank you so much

Fantastic service, friendly and very efficient.

The go-to boiler installation folks in Milton Keynes. I called 5 local plumbers in MK and Grand Union were the only people to provide me with a reasonable quote so I went with them and I'm glad I did. Mitchell was very respectful of the property - he was the only engineer who took his shoes off before entering without me asking. I had to stop everyone else and ask them to take off their shoes as my whole flat is carpeted. He carried out the new boiler instal in a clean and efficient manner. He was also very friendly and knowledgeable. I'd whole heartedly recommend them

Great communication and scheduling service! Job got done promptly and thoroughly!

Fantastic service keeps you up-to-date all the way and the engineer was very professional and lovely to speak to would highly recommend them

I recently used Grand Union Plumbing Heating & Bathrooms and couldn’t be happier with the service. From start to finish, the team was professional, punctual, and extremely knowledgeable. They explained everything clearly, worked efficiently, and left everything spotless. The quality of workmanship is outstanding, and they went above and beyond to make sure everything was perfect. I highly recommend them for anyone looking for reliable plumbing, heating, or bathroom services. Excellent experience all around!

GREAT COMPANY MARCOS WHO DID THE REPAIR WAS EXCELLANT

Great service! Thank you

Always a positive experience, pleasant employee and very helpful

Excellent. On time. Job completed in a short time. No fuss. Very polite. Just what you want in a plumber.

First class service will use again.

Great company, communication was there throughout - very helpful, competitively priced and and all round cracking service! Will 100% use again

Quick and easy gas safety check carried out. Friendly staff member, arrived within the time slot booked. Also received a message 10 minutes before arrival. Thank you

Would highly recommend, Lauren in the office most helpful from start of job . On commence of work all were very friendly kept me informed on the day. The workmanship and pride in doing a good job showed.

Great job, professional and quick! Thank you guys

We had returned from holidays , house was a little chilled , when I got txt from grand union for my normal winter service on , and straight away I booked it. and called the young lady so polite and very helpful , also being pensioners so need house nice and warm. She organised for marco to come and get all systems go for the heating before 3:30pm Thank you so much for a quick response 👍👍 Definately five star service we got.

Had a considerable gas leak.They were quick to respond, arrived on time as promised, polite professional service.Goodwork by Andy and Marco.

Andy texted with an estimated time of arrival. Arrived on time, very polite & chatted for a little while. Very tidy & completed job with no problems. Very happy. Andy also helped & advised with future projects. Thank you Andy.

Andy and Lauren were professional, knowledgeable, and helpful. Communication was great so I knew what to expect and when, and how much it would cost. Thank you both!

Andy was very quick and efficient and a lovely guy. Also when I called to check on times ect the lady I spoke to on the phone was very professional with handling my enquiries and very nice and personable. We will definitely use your services again. Thank you very much.

Contacted Grand Union with our problem of a leak on the downstairs toilet. Had immediate response with a timed visit for the following day. The engineer Kennon arrived on time and did an excellent job fixing the leak as he had spare parts on the van. It’s so good to receive old fashioned quality service .So impressed I've booked them for my annual boiler service in January.

Excellent plumbing and heating service! Prompt response, clear communication, and professional workmanship. They explained everything in detail and made sure the system was running smoothly before leaving. Great value for money 🙂

Shout out to all the team for their great communication either via telephone or email. I would recommend Grand Union Plumbing & Heating

Thank you to Grand Union for fitting our new hot water tank and immersion heater. It was not as straight forward as expected but they sorted it all out and did an excellent job. Thank you Mitchell and Andy.

Always professional and friendly, either on the phone or in person. I have Andy fix my boiler quite often. He is a friendly guy and always knows exactly what is wrong with it. Highly recommend.

Andy attended to my issue just two hours after I contacted Grand Union. He was very professional. He quickly diagnosed the problem and solution. A brilliant service.

Grand Union have completed a few jobs for me over the past couple of years. Another awesome job completed by new recruit Keenan who installed a power shower for my mum - she’s one happy lady.

Boiler service quick and easy!! Ready for the winter. They have previously installed a new radiator in our kitchen/diner and relocated another. Couldn’t fault them!

We recently had a visit of an engineer from Grand Union Plumbing and Heating to address a boiler leak issue. The engineer arrived promptly and carried out a thorough assessment of the fault. After identifying the defective part, the repair was completed within just one day of the initial visit. Throughout the process, the engineer was friendly, positive, and highly professional. They took the time to explain everything clearly, which was greatly appreciated. Since the repair, the boiler has been functioning good. Highly recommended for their quick response, excellent service, and approachable attitude.