ek_1986
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Posts: 12
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« on: February 02, 2012, 07:13:16 PM » |
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Hi All
My Gas boiler broke up last week and I am in search for an immediate replacement.
My current set up is as follows;
Boiler system on ground floor linked to a tank cylinder upstairs that is interlinked between an independent thermostat.
I was keen on going for a Worcester Bosch, Worcester Bosch 28i Junior but I believe this wont the system I have.
Can anyone advise further or recommend a good alternative boiler.
Thanks in advance.
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JohnS
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« Reply #1 on: February 02, 2012, 07:40:28 PM » |
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Not sure why it won't do. Please give more info.
Both Worcester Bosch and Valliant are good middle of the range boilers. From the description of your set up, stay clear of anyone who suggests a combi. You will either need a standard boiler which has a separate pump and expansion vessel or a system boiler where all the above are combined in one package. Makes the plumbing eaise, but if you already have a pump and expansion vessel, it is not needed. Maybe it makes the boiler easier to service if there are less bits inside the casing too.
In respect of sizing, most installers would choose a similar size to the existing, or look at the number of radiators and do a rough check. Was the existing set up ok or did you feel it barely coped in cold weather?
A very rough ball park figure would be £1,000 for the boiler and £2,000 for fitting, including power flush etc.
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2.1kWp solar PV
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Sean
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« Reply #2 on: February 02, 2012, 07:59:57 PM » |
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there's nowt wrong with fitting a combi - I fitted 25/32 oil burning WB combi last year here, just makes the upstairs F&E tanks and the WC redundant more loft space  |
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desperate
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« Reply #3 on: February 02, 2012, 08:10:49 PM » |
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and the WC redundantdo you have to pee in the back garden with a combi  Desp
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Crazy old duffer
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Philip R
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« Reply #4 on: February 02, 2012, 09:08:45 PM » |
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If you have a tanked hot water system, you can at least upgrade it to go renewable with solar thermal one day. So if space is not a problem and you have reasonable Hot water demand then I would say use a heat only or system boiler with your tank. At least if the boiler packs up you can use the immersion heater for a while. With a combi, all or nothing. Besides, for most houses they are oversized for reasonable hot water production and generally way oversized for the central heating. Recent trends with combis of 35KW and above are a case in point.
Vaillants and Glowworms are basically the same inside. Vaillants made for the german market are not the same as the cheaper derivative for the UK, check out the business addresses.
I would go for WB, Vaillant or Glowworm (Flexicom) range.They use the St/ St washing drum type heat exchanger. The latter two use this type.
PhilipR
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JohnS
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« Reply #5 on: February 02, 2012, 09:39:33 PM » |
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I thought that Worceter Bosch use aluminium heat exchangers.
Combis may be fine for a small household but in a larger one they may struggle to cope if two taps are turned on at once.
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2.1kWp solar PV
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Philip R
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« Reply #6 on: February 02, 2012, 09:48:34 PM » |
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John S
As you say WB uses Aluminium alloy in its heatcell. I refered to the last two boilers (Vaillant and Glowworm) (the latter two) using St Steel. Did not mean to spread confusion on the forum.
Philip R
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series530
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« Reply #7 on: February 03, 2012, 06:05:51 AM » |
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Before I get flamed, I know that they enjoyed a poor reputation at one stage, but those days are long gone. We have a viessman boiler ... Again German, fully stainless steel heat exchanger, five year parts and labour warranty and ten years on the heat exchanger. It's been in for a couple of years now and has been excellent.
Whatever you buy, be very careful about the condensate pipe. I took the precaution of routing it from the boiler to the drain fully inside the house. Don't be tempted to route the pipe outside as it will surely freeze and cause no end of trouble in the cold winter months.
It's all to easy to go for a cheap system. Best I think to pay a little more and get quality parts from an installer who knows what they are doing. Some of the quotes and suggested systems that we had while looking were a revelation and a joke..... And we were careful with whom we chose to come and quote!
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Ian
Sanyo HIT H250E01 === Hilti Rail System === Enecys Micro Inversion === Internet and EnviR/Optismart Monitoring
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Sean
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« Reply #9 on: February 03, 2012, 10:29:56 PM » |
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that's because he is a Vaillant and Viessmann reseller, he's bound to say that I've just fitted myself an oil fired WB combi - I'm no cheapskate, nor do I spend my money without due regard to proven reliability - but each to their own |
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andito
Jr. Member
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Posts: 81
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« Reply #10 on: February 03, 2012, 11:15:03 PM » |
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I am also a "boiler engineer" & would agree with Vaillant for reliability, but would also recommend Worcester (I fitted one in my parents house 450 miles away & have one myself). Viessmann boilers are few & far between (in my experience) so cannot comment on reliability. Stay away from any cheap boilers from Wickes/B&Q etc as you generally do get what you pay for with boilers. I am currently looking at adopting my current combi boiler to work as system boiler with some form of DHW storage to allow for future Solar Thermal and WBS input so would keep your current system with DHW cylinder. Whatever boiler you choose having the system powerflushed is an absolute must with new boilers & ensure your installer will guarantee the flush for a decent period of time (I have had to replace heat exchangers just over 1 year old due to poor flushing & the manufacturers warranty will not cover it!!) Good luck, Andy. |
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supremetwo
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« Reply #11 on: February 04, 2012, 01:13:21 AM » |
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that's because he is a Vaillant and Viessmann reseller, he's bound to say that He does not sell or install boilers but has many years experience servicing them. |
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Sean
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« Reply #12 on: February 04, 2012, 02:06:52 PM » |
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that's because he is a Vaillant and Viessmann reseller, he's bound to say that He does not sell or install boilers but has many years experience servicing them. nonsense, he's a jack of all trades master of ..... |
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wookey
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« Reply #13 on: February 04, 2012, 11:49:17 PM » |
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I like atmos boilers - some interesting designs, especially solar+combi setups. I have a viessmann. Seems a nice design, although mine is a bit cranky and usually gives me error F5 (low flow) rather than starting up. Needs a few resets to get the message. May be dodgy flow switch, or air in system.
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Wookey
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garethpuk
Newbie
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Posts: 32
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« Reply #14 on: February 06, 2012, 10:13:34 AM » |
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The guy who does my servicing has always recommended Alpha boilers, he's fitted two for me and both are going strong 5 years later.
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