Ideal Logic 24kw v Gloworm 30kw v Ideal Vogue 26kw

maccydoodies

Im in the market for a new boiler and I'm lost with all the jargon. We have 9 rads and I want something economical and reliable and easy to obtain spare parts if required. Apparently the ideal logic comes with a "free" magna cleanse however I do know that some units come with them built in. Please advise lads. Me head is melted. Oh i'm being quoted €1449 for the ideal logic am I being ripped? The vogue is coming in at an extra €300 approx.

OwenM

24kw seems like a big boiler for 9 rads. I'm pretty sure my oil boiler is 21kw and my stove is 17. These heat my 9 rads, not at the same time, only one boiler is on at any one time.

Dtp1979

Those boilers are massively oversized. Nearly 3 times too big.
1400 installed is a complete rip off. Correct. The price should be around 2,000 if done correctly

Cantonahuges

Both makes of boilers are fine but are way over sized 18kw is loads . I would personally prefer the gloworm

micks_address

Cantonahuges wrote: »

Both makes of boilers are fine but are way over sized 18kw is loads . I would personally prefer the gloworm

We have similar amount of rads and have 24kw ideal classic. Being replaced with ideal vogue this week

Nearly every job I go to the boiler is over sized which can often lead to gas lines being up graded at the expense of the home owner.

As a very quick calculation if I needed to know a ruff requirement I’d use 1 1/2 kw per rad and 5kw for a Cylinder (unvented cylinders 23-30kw depending on size).

If you run your heating at separate times to your hot water you don’t need to add the hot water requirement to the sizing of the boiler.

Cerco

Are double rads counted simply as two rads or is there another way of calculating them? Just thinking the output might be less than two single rads of the same size. Just wondering.

Cerco

Cerco wrote: »

Are double rads counted simply as two rads or is there another way of calculating them? Just thinking the output might be less than two single rads of the same size. Just wondering.

A double rad is just a rad, each type style of rad has its own value, in a ideal world the value of each rad will be had and those values will be added together to give the KW requirement to heat those rads.

Dardania

You could also take the floor area of the house and approximate 80w/m2 for heat input required, or maybe 90w/m2 for a really cold day. And then add on the amount for the hot water cylinder - I’ve seen coil ratings starting from about 7kw up to 15kw, but as said if there’s load shifting (hot water being heated at different times to the space) you can disregard it to some degree.

Problems with oversized boiler is it will short cycle , being on and off frequently as it can’t dissipate the heat it generates fast enough. Like driving with your foot to the floor the whole time - the only way to control your car speed is by Turning the engine on and off.

maccydoodies

Thanks for the advice peeps. Just to add the house is around 1000sq ft. At the moment we have an 18kw heap of crap that was never upgraded after we got an extension and an attic conversion. I'm about to pay the deposit on the works for the boiler and heating controls, just waiting on the final quote.

I may come back and ask for your final words of advice if thats ok?

micks_address

maccydoodies wrote: »

Thanks for the advice peeps. Just to add the house is around 1000sq ft. At the moment we have an 18kw heap of crap that was never upgraded after we got an extension and an attic conversion. I'm about to pay the deposit on the works for the boiler and heating controls, just waiting on the final quote.

I may come back and ask for your final words of advice if thats ok?

What boiler and controls are you going for?