Project Description

Vaillant Ecofit Pure 825 Combi Conversion

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This boiler installation would be considered a straight swap because we weren’t relocating the system, but that doesn’t necessarily mean it was a straightforward project. As always, there are differences between the set up of an existing boiler and the requirements of a modern boiler with different engineering.

This installation involved removing the old boiler/cylinder combination and replacing it with a Vaillant Ecofit Pure 825 Combi boiler. This brought with it some key considerations:

  • There was an existing vertical roof flue, however…

  • The customer was understandably keen to avoid the need for scaffolding, plus…

  • There was no drainage in that area of the property, and…

  • The pipework needed changing.

Why did they choose Grand Union Plumbing & Heating?

We have a team of very experienced gas safe registered heating engineers and that always gives prospective customers reassuring peace of mind. However, when they speak to us, they also quickly realise they’re dealing with a company that has the knowledge needed to keep installation costs as low as possible, whilst still ensuring the best quality work is carried out.

What was our new boiler replacement process for this project?

One of the first things we needed to do, once we’d all agreed that a Vaillant Combi was the right choice, was find an adaptor for the flue. The vertical roof flue on the existing boiler was fine, and none of us wanted to have to involve roofing contractors to make a replacement, thus a suitable adaptor was required. We, of course, tracked one down pretty quickly, saving the customer a  lot of money in the process.

However, there was also no drainage above the stairs, so we needed to fit a condensate pipe. And the pipework from the existing system needed to be converted to accommodate the new combi boiler setup.

In addition to this work, we also fitted a new system filter, added inhibitor back into the system, and bled the radiators. We then installed a new wireless thermostat programmer. And finished off by commissioning the system and registering the new boiler with the manufacturer.

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Before InstallationVaillant Combi Boiler

The benefits of our solution

Our experienced gas safe registered heating engineers appreciate that installation costs need to be kept as low as possible. So ensuring that the existing roof flue could be retained through the use of an adaptor meant that the costs of scaffolding and roof contractors were removed.

They were also able to fit a new condensate pipe without significant disruption. And convert the pipework to accommodate the new system without much ado. Plus they ensured that the new system would continue to operate efficiently for a long time by adding inhibitor back in; which would also help to keep fuel bills low in the future too.

In a nutshell:

  • We installed a fabulous new combi boiler making use of as much of the existing system as we could e.g. the vertical flue.

  • We chose a boiler with a 10 year warranty.

  • We modernized their whole system, from pipework to thermostat.

After care

It’s our policy at Grand Union Plumbing & Heating to do a full handover whenever we install a new system. We therefore:

  • Explained the 10 year warranty clearly.

  • Explained the differences between the old system and the new one and took the customer through how it works.

  • Demonstrated how the new thermostat programmer works.

As part of our standard practice, we also took the old boiler and all packaging away to be disposed of in an environmentally acceptable way.

Did we go the extra mile?

Yes… because that’s what we do. We investigated very thoroughly the best way to make use of the existing vertical roof flue, and thus saved our customer a lot of money. Something that made everyone’s day!

Does your boiler need replacing?

If you’re looking to replace your existing traditional boiler with a new combi system, please don’t hesitate to give us a ring on 01908 034194. We love working out how to enable customers to benefit from the efficiencies of modern boiler systems… and keep installation costs manageable too.

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Areas we cover

  • Aylesbury
  • Bedford
  • Leighton Buzzard
  • Northampton
  • Olney
  • Towcester
  • Woburn Sands
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What Our Customers Say

I’ve used Grand Union 3 times and every time the service is excellent and the price very reasonable. Engineers are very good at letting you know what they are doing and there are no hidden charges. They even managed to do a job at short notice. They work tidily and even followed up with a message to check my heating was still ok the following day. Highly recommend

Claire Edwards

Excellent service from Mitch!
Responsive, courteous and informative.
Work swiftly done too, with clear explanations throughout.
Thanks again, Mitch.

Tim
Used grand Union plumbing to service my boiler and couldn’t of asked for a better service. They were on time and actioned the job in a clean and professional manner. Very nice to see they were operating in a covid secure manner without being promoted too

100% will be used again in the future

Tom Holland
Highly recommend Grand Union Plumbing & Heating. We called Mitch after getting nowhere with the first 2 heating engineers we contacted. In contrast to them, Mitch quickly diagnosed the fault, ordered the part and replaced. Totally professional and good value for money.
Mike Kennedy
I found Grand Union on local heroes. Id given up on British gas and NPower/homeserve.
Mitch was honest from the get go. Came round and gave me quote got the worl done within a couple of days once parts came.
Very highly professional. Very friendly. Perfect on time. Clean. Safe. What else can I say. I will be using only Grand Union here on and cannot recommend enough.
Sukhie
Amazing service Mitch Andy and Cory all amazing guys came out Xmas Eve went above and beyond to get me sorted and were amazing with my children letting them watch and so polite couldn’t recommend highly enough 10/10
Steaves Jen
Highly recommend the team to fix any plumbing or heating issues. They arrived as scheduled and it was great to have such a high standard of service. Will definitely be my contact for anymore plumbing issues and for boiler services.
Owen Thomas
Contacted them after having three boiler services being cancelled by a Big Five company only resulting to a wait till May for the 4th appointment. From the first day I contacted them Andy came around in a week’s time and provided excellent customer service and serviced our boiler very efficiently and quickly. The appointment ran a bit late due to another emergency call but both Mitch and Andy were apologetic and polite. Appreciate there excellent customer service on top of a job done well. Will be calling on them in future again for sure. Thank you.
Kaanita Khan
Would highly recommend Grand Union plumbing, really knowledgeable team. They were able to identify the problem with our heating pressure gauge, and release valve really quickly and stop our leak straight away. Thanks
Emma Thompson
Love these guys, have been using them for years and will keep using them for years in the future. They’re helpful, do amazing work each and every time, and are respectful of your home, both Andy and Cory took their shoes off when they came into the house recently, Cory put down dust sheets when he was fitting my new radiator in the bathroom (tiled floor wipes clean, but still put it down).
100% recommend them for any and all plumbing works and looking forward to having them do more work for me later in the year.
Ian Kockelbergh

It’s not very often that you find a quality tradesperson who is reliable, honest, and competitive on his pricing. Mitch has done a number of jobs in our house, including installing a new boiler, water tank and radiators. All to a brilliant standard. I will happily recommend Mitch and Grand Union Plumbing!

S C

I have called Mitch out twice since moving into our new house a month ago. Both times he has managed to fit in an appointment fairly quickly to resolve our issues. He has been professional and friendly, offering advice on other issues that I have seen. I would definitely recommend his services.

Simon Edwards

We have used Grand Union Plumbing several times as we had a really tricky fault. We found Mitch to be really excellent. Very happy to recommend, 10/10

Annette McDade

Called Mitch out on very short notice, extremely reliable and great rates, would highly recommend Grand Union Plumbing and Heating. Also provided advice with other queries aside from the job at hand- with no reluctance. Great service, thank you for your hard work and honesty Mitch.

Dushan Gnanakumar
Great service, polite, attention to detail. Would highly recommend.
Ajvinder Dhatt
Had a leak that needed fixing asap and Mitch gave me advice over the phone to deal with it until he could get to me, then came out within the hour on a weekend! Would highly recommend
Hannah Manners
Great company would highly recommend for any heating & plumbing issues
Terry Adolpho

Definitely recommend these guys. Had a job done by them and they wasted no time to get it done and made sure I was completely happy before any payments. Nowadays companies just want to rush and take your money. Big thumps up

Tevaugh Grant
We always use Grand Union for serving and any other unforseen problems. The service and professionalism is 1st class. Would definitely recommend!!
Stephanie Horne
A great company to do business with… I used them recently for an emergency with a domestic heating system which was rectified very efficiently. A second problem (some months later) and there was no decision to make, called them and they sorted it in no time with minimum fuss, mess and very reasonably priced.
Trevor Gordon

Have used Grand Union twice now. They are very quick to respond to enquiries, reasonably priced, tidy workers and very friendly. I can’t fault them. Definitely my go to guys now for any plumbing needs.
Highly recommended

Emma Verrall
Great service from Mitch. Have used a few times for boiler service, repairs and outdoor tap installation. Always very prompt service, turns up on time and reasonable prices. Would definitely recommend!
Jon Hood

I found Grand Union Plumbing through the Gas Safe Register. I had a boiler service and gas safety certificate. Mitchell was very professional and the prices were very reasonable. I would definitely recommend and use again.

Rebecca Hughes
Mitch was very helpful when fitting my new boiler – he was very fair about price and I couldn’t recommend Mitch enough. Thanks Mitch!
Reece Hussain

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