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Anyone got experience of Navien boilers on here? 13:47 - Oct 23 with 714 viewsBent_double

Got a quote for a new gas boiler from a local tradesman, he's recommending a Navien combi boiler to replace my old Valliant one.

The brand is South Korean, apparently, and they're aggressively moving into the UK market by offering high quality products at lower prices to get market share.

The trustpilot reviews are all pretty good, bar a few recent ones with the usual 'avoid at all costs', hence was wondering if anyone had one, or anyone works with them/installs them?

Poll: So what do we think will happen with MM and the Aston Villa job?

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Anyone got experience of Navien boilers on here? on 14:21 - Oct 23 with 658 viewsLeaky

If your Vaillant gave you good service over the years stick with them. Viessmann did the same sales approach years ago , invited heating engineers for a 2 day p!ss up in Telford all expenses paid. It needed to be free to go to Telford !
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Anyone got experience of Navien boilers on here? on 15:03 - Oct 23 with 592 viewsEuanTown

Get a second opinion. Worcester always a good bet. But no official opinion. Personally s Korean??. A no from me.
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Anyone got experience of Navien boilers on here? on 15:08 - Oct 23 with 579 viewsZx1988

A few thoughts here:

1) As Euantown has said - get a second or even a third opinion from other trusted tradespeople.

2) Take into account the warranty length - boilers are much more of a consumable item than they were in the past. Taking a cynical point of view, I wouldn't expect a modern boiler to last much longer than the manufacturer's warranty.

3) Is your old boiler completely beyond repair? If it's an older 'built to last' model, and only needs some new parts, consider spending the money to keep it running rather than binning it for a shiny new model. The savings you make from a newer, more efficient boiler will only serve to pay for your next boiler when the new one packs up. If you've already got a relatively modern boiler, ignore the above; welcome to late-stage capitalism!

You ain't a beauty but, hey, you're alright.
Poll: Stone Island - immediate associations

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Anyone got experience of Navien boilers on here? on 16:13 - Oct 23 with 500 viewsBent_double

Anyone got experience of Navien boilers on here? on 15:08 - Oct 23 by Zx1988

A few thoughts here:

1) As Euantown has said - get a second or even a third opinion from other trusted tradespeople.

2) Take into account the warranty length - boilers are much more of a consumable item than they were in the past. Taking a cynical point of view, I wouldn't expect a modern boiler to last much longer than the manufacturer's warranty.

3) Is your old boiler completely beyond repair? If it's an older 'built to last' model, and only needs some new parts, consider spending the money to keep it running rather than binning it for a shiny new model. The savings you make from a newer, more efficient boiler will only serve to pay for your next boiler when the new one packs up. If you've already got a relatively modern boiler, ignore the above; welcome to late-stage capitalism!


The warranty is 10 years, and by all accounts they are very well made, stainless steel where others use copper.

As for the current Valliant, its done over 15 years, most of the parts have been replaced, BG won't touch it anymore, so even though it's working OK (apart from the frequent failing to ignite error messages!) it's got to go.

The Naviens are 'hydrogen' ready too, if that's ever going to be a thing in the UK.

Poll: So what do we think will happen with MM and the Aston Villa job?

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Anyone got experience of Navien boilers on here? on 16:19 - Oct 23 with 484 viewsZx1988

Anyone got experience of Navien boilers on here? on 16:13 - Oct 23 by Bent_double

The warranty is 10 years, and by all accounts they are very well made, stainless steel where others use copper.

As for the current Valliant, its done over 15 years, most of the parts have been replaced, BG won't touch it anymore, so even though it's working OK (apart from the frequent failing to ignite error messages!) it's got to go.

The Naviens are 'hydrogen' ready too, if that's ever going to be a thing in the UK.


Can you not find a decent independent tradesperson to service it and undertake any necessary repairs?

BG probably have a vested interest in declaring it 'obsolete', with the hope that they can then sell you a new boiler.

My dad's early-80s Thorn Apollo boiler only gave up the ghost for good a couple of years ago owing to a lack of available parts, but had been serviced and maintained by a decent local engineer over the intervening 40-or-so years.

You ain't a beauty but, hey, you're alright.
Poll: Stone Island - immediate associations

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Anyone got experience of Navien boilers on here? on 16:45 - Oct 23 with 449 viewsOldFart71

Our boiler was in our property when we moved in 19 years ago, According to those in the trade the new boilers are only given around a 10 year life span. I couldn't really tell you which make to go for. I would just be wary of anything that is cheap.
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Anyone got experience of Navien boilers on here? on 17:45 - Oct 23 with 392 viewsBlueForYou

Are you sure BG are not the problem here?

Edit.... Just did some research on this. They are a very longstanding & successful company from South Korea. It occurred to me that anyone who might buy a Hyundai or Kia car, & there are many, pave the way for a Heating appliance from Navien. Being in the business, I think I would give this company a serious look. If they are backed by British Gas & you contract with them for your servicing, then why not?
[Post edited 23 Oct 19:08]
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Anyone got experience of Navien boilers on here? on 21:39 - Oct 23 with 306 viewssoupytwist

Having recently decided upon a Samsung fridge and telly the fact that they're South Korean wouldn't bother me in the slightest especially given what Hyundai and Kia are doing in the electric car space.

Wouldn't take British Gas' word for anything, their advice will be based on what's best for them. If you know a decent local heating engineer ask them about the likely lifespan of your existing Vaillant.

When I went through the boiler replacement rigmarole about 3 years ago I went for an Atag. They're Dutch and I've been perfectly happy with it.

On the other hand, a perhaps cautionary tale about going for a currently obscure brand in the UK market. The one the Atag replaced was a MAN Heiztechnik boiler a German company, whose domestic boilers were imported to the UK by one company based in North Yorkshire. The importers went bust shortly after I bought it, meaning that their servicing operation went with it. That was OK as one of their middle aged ex-employees set up on his own, but he covered the whole country so if something did go wrong you sometimes had to wait a while for him to be down south. Gradually parts supply became more difficult and when Dave (for that was his name) decided to retire there was no one out there who really knew anything about them. I'm pretty sure that it could have been kept going for longer but in the end it became too much hassle and in the end I decided that the next repair would be the point at which we replaced it.


Having learnt my lesson, when I needed to replace my car I bought a Saab 9-5 estate.
[Post edited 23 Oct 21:40]
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Anyone got experience of Navien boilers on here? on 22:45 - Oct 23 with 236 viewsWicklowBlue

My old house which is Sale Agreed has a 20+ year old Potterton LPG boiler that is obsolete not as efficient as modern condensing boilers but still running. It was a bone of contention in the house sale where the agent was telling me to replace it. I said why should I because if I did so it would be the cheap end of the market here which is the Ideal boiler range.

It is all down to budget, even the Potterton can still be serviced so Im sure your Valiant can be despite BG saying no. A local certified gas (RGI in Ireland) installer will help.

Otherwise, depending on budget can go cheap or spend more on established brands for peace of mind in terms of warranty, parts availability etc.

If you want efficency and can afford it rip it out and go down the heatpump route.

Im in the midst of a full energy retrofit of my new home and had an Ecodan heatpump installed in August. It was costly but loving the fact when tuned correctly it just keeps the house warm constantly whatever the weather. As I have underfloor heating throughout no need to boost heat etc. Combined with solar and battery it is a game changer from the old gas boiler in terms of short heating cycles.

But both are a significant outlay which take 5-7 years to pay off. But doing my part for the planet.

Edit: typos
[Post edited 23 Oct 22:47]
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