This cold spell has caused me to think about replacing some of our
older single panel rads (non-finned) with new K2 double/double rads.

Any recommendation on best quality would be welcome.
Perhaps more importantly, any warnings about "bad-uns" would be
welcome, too.
Naffer

On 6 Jan, 17:18, naffer wrote:
This cold spell has caused me to think about replacing some of our
older single panel rads (non-finned) with new K2 double/double rads.

Any recommendation on best quality would be welcome.
Perhaps more importantly, any warnings about "bad-uns" would be
welcome, too.
Naffer

You have considered the ability of your boiler to provide enough heat
to match the extra thermal load?

You have considered the ability of your boiler to provide enough heat
to match the extra thermal load?
Of course.
30Kw new condenser, off lots of the time. 6 bed house with just two
people now kids have gone,
most rads off but inadequate rads in large sitting room.

So, recommendations about rads, please.
Naffer

On 6 Jan, 20:10, naffer wrote:
You have considered the ability of your boiler to provide enough heat
to match the extra thermal load?

Of course.
30Kw new condenser, off lots of the time. 6 bed house with just two
people now kids have gone,
most rads off but inadequate rads in large sitting room.

So, *recommendations about rads, please.
Naffer

Actually, I recommend reclaimed cast iron radiators. I got three
recently via eBay, had them shotblasted, painted them, fitted adaptors
and installed them, and I'm amazed at the amount of heat they chuck
out, compared to my old single-panelled rads - I still have some of
the latter in a couple of rooms, and there's no comparison. Cast iron
column rads have a large surface area. Unbelievably heavy though.

Cheers
Richard

In an earlier contribution to this discussion,
naffer wrote:

You have considered the ability of your boiler to provide enough heat
to match the extra thermal load?
Of course.
30Kw new condenser, off lots of the time. 6 bed house with just two
people now kids have gone,
most rads off but inadequate rads in large sitting room.

So, recommendations about rads, please.
Naffer

Radiators are very much a commodity - so find some that look ok, at a
reasonable price. I've used rads from Stelrad, Myson, Barlo, etc. as well as
unbranded ones from Wickes and Screwfix - and they've all been ok. For a
given size and construction (single with or without fins, double with single
or double fins) they all have pretty much the same heating capacity.

But don't forget to downrate them for the lower temperatures used by
condensing boilers - so you'll need much bigger rads than would be indicated
by believing the manufacturers' output figures.
--
Cheers,
Roger
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Email address maintained for newsgroup use only, and not regularly
monitored.. Messages sent to it may not be read for several weeks.
PLEASE REPLY TO NEWSGROUP!

cynic wrote:

You have considered the ability of your boiler to provide enough heat
to match the extra thermal load?

What extra thermal load?

If anything the boiler will work better by having a lower return temp.
so its efficiency will go up, less heat going out of the vent and more
into the house.

Andy

In article
,
naffer writes
This cold spell has caused me to think about replacing some of our
older single panel rads (non-finned) with new K2 double/double rads.

Any recommendation on best quality would be welcome.
Perhaps more importantly, any warnings about "bad-uns" would be
welcome, too.

Stelrad Elite, simple, good quality, no nonsense but I would use (& have
used) K+ instead of K2, they are double panels with a single convector
and I find them to be a more discrete solution, despite requiring more
wall area for the same output.

A bit like my ice cream preferences, a single nougat is an indulgence
but a double nougat it just rude.
--
fred
BBC3, ITV2/3/4, channels going to the DOGs

On 7 Jan, 00:38, fred wrote:
In article
,
naffer writes

This cold spell has caused me to think about replacing some of our
older single panel rads (non-finned) with new K2 double/double rads.

Any recommendation on best quality would be welcome.
Perhaps more importantly, any warnings about "bad-uns" would be
welcome, too.

Stelrad Elite, simple, good quality, no nonsense but I would use (& have
used) K+ instead of K2, they are double panels with a single convector
and I find them to be a more discrete solution, despite requiring more
wall area for the same output.

A bit like my ice cream preferences, a single nougat is an indulgence
but a double nougat it just rude.
--
fred
BBC3, ITV2/3/4, channels going to the DOGs

I would steer clear of rads where the bleed valve is a small thin
brass screw inserted into a welded fixture located on the sides (the
type found at Wickes). I've known a few break off leaving the screwed
in part remaining in the rad. I'd go for ones where the bleed screw is
quite chunky and screwed into a removable fixing at the ends of the
rad.

On Wed, 6 Jan 2010 09:18:23 -0800 (PST)
naffer wrote:

This cold spell has caused me to think about replacing some of our
older single panel rads (non-finned) with new K2 double/double rads.

Any recommendation on best quality would be welcome.
Perhaps more importantly, any warnings about "bad-uns" would be
welcome, too.
Naffer

I use Stelrad Compact - only because SWMBO likes them. I've noticed
when buying them on-line that you can find different prices all over
the place, but in the end PlumbCentre (Wolesey Ltd) turn up to deliver
from the local depot. The price differences are only a few pounds, but
hey if they are the same stock....

R.

On 6 Jan, 22:41, Andy Champ wrote:
cynic wrote:

You have considered the ability of your boiler to provide enough heat
to match the extra thermal load?

What extra thermal load?

Think about it - double panels with fins against single panel
unfinned!

If anything the boiler will work better by having a lower return temp.
so its efficiency will go up, less heat going out of the vent and more
into the house.

older model boilers can be quickly destroyed by excessively low return
temperatures causing condensing. For a non condensing boiler which the
original post did not clarify ths is a very undesirable situation.

Andy

In article
,
nafuk writes
On 7 Jan, 00:38, fred wrote:

Stelrad Elite, simple, good quality, no nonsense but I would use (& have
used) K+ instead of K2, they are double panels with a single convector
and I find them to be a more discrete solution, despite requiring more
wall area for the same output.

I would steer clear of rads where the bleed valve is a small thin
brass screw inserted into a welded fixture located on the sides (the
type found at Wickes). I've known a few break off leaving the screwed
in part remaining in the rad. I'd go for ones where the bleed screw is
quite chunky and screwed into a removable fixing at the ends of the
rad.

Agree totally although that does not apply to Stelrad Elites, they have
full size ports at each corner and a replaceable vent plug goes in one
of the top ports.
--
fred
BBC3, ITV2/3/4, channels going to the DOGs

On Thu, 7 Jan 2010 17:22:49 +0000, fred wrote:

Agree totally although that does not apply to Stelrad Elites, they have
full size ports at each corner and a replaceable vent plug goes in one
of the top ports.
--

Same as the Fix ones from Screwfix made by D D Heating of Bedford. Can
be fitted either way up .

cynic wrote:
On 6 Jan, 22:41, Andy Champ wrote:
cynic wrote:

You have considered the ability of your boiler to provide enough heat
to match the extra thermal load?
What extra thermal load?

Think about it - double panels with fins against single panel
unfinned!

The amount of heat needed to keep the house warm is the same regardless
of the radiators. The amount of heat needed to take the radiator to a
set temperature will go up - but you don't need to take the rad. to a
temp., it's the house that matters!

If anything the boiler will work better by having a lower return temp.
so its efficiency will go up, less heat going out of the vent and more
into the house.

older model boilers can be quickly destroyed by excessively low return
temperatures causing condensing. For a non condensing boiler which the
original post did not clarify ths is a very undesirable situation.


.... And that's a completely different issue to "extra thermal load".

Andy