Anyone used Rointe heaters?

Gerry1

rp1974 said:

Not for all 12,surely not,imagine the expense.

Much less that the extra income generated by selling just one additional heater !

Reed_Richards

If you look at Rointe's prices you will see than can probably afford it - if they manage to sell any.

Hasbeen

Cristos said:

Cardew said:

Cristos said:

Also how do you know a fan heater is 100% efficient. That sounds like nonsense to me. There will be different components  turning electricity to heat with varying efficiency and loss. The power to turn the motor makes your claim not make sense.

Probably more likely that the rointe are getting closer to being 100% efficient and that the cheaper tech never got anywhere close to 100% efficiency.

Impossible I'm afraid and clearly total nonsense. Try providing some proper arguments? For example the power to drive the fan. Losses and inefficiency in the components? Losses in transfer of heat through the materials? I don't believe any heater could possibly be 100% efficient its litterally scientifically impossible. The efficiency of watts consumption to watts in heat output will vary dramatically and fan heaters rate amongst the poorest.

The 100% efficiency is nor our 'opinion'! We are simply quoting a gentleman by the name of Albert Einstein. A century ago he famously stated “Energy cannot be created or destroyed; it can only be changed from one form to another.” scientists the world over agree with him; and now along comes Cristos and 'proves' Einstein was wrong!

I think you need to go back to school my friend  Emergy is lost in all the stages. The noise from the fan. That's energy. The motor turning again uses energy. The air moving again energy. The list goes on. If you had any understanding of the components used for these heaters you would also understand the losses in those too. Really to claim such nonsense in the name of Einstein should really get you banned from a site like this. I'll leave you to dream of your 100% efficient heater :-)

Albert Einstein > Quotes > Quotable Quote

“Energy cannot be created or destroyed, it can only be changed from one form to another.”

― Einstein

Paulb_2

Just been researching electric heaters and came across this thread and I'm interested in this efficiency argument. I use Which as a source of information and on there website for heater best buys they conduct various tests and it states "You'll want a heater that won't keep you waiting as it heats up a room. We time how long each electric heater takes to raise the temperature of a room by ten degrees. The worst can take twice as long as a Best Buy". If this is the case that for the same power input, one heater gets the room up to temperature in half the time of another one then that is going to cost half as much to do that. Doesn't this mean heater efficiency can vary by as much as 50%?

Swipe

Paulb_2 said:

Just been researching electric heaters and came across this thread and I'm interested in this efficiency argument. I use Which as a source of information and on there website for heater best buys they conduct various tests and it states "You'll want a heater that won't keep you waiting as it heats up a room. We time how long each electric heater takes to raise the temperature of a room by ten degrees. The worst can take twice as long as a Best Buy". If this is the case that for the same power input, one heater gets the room up to temperature in half the time of another one then that is going to cost half as much to do that. Doesn't this mean heater efficiency can vary by as much as 50%?

If it takes 30mins longer to heat up then it will also take 30 mins longer to cool down so efficiency will remain the same.

Reed_Richards

All electric heaters convert 100% of their electricity into heat so they are all equally efficient in that sense.  When you switch on a heater it will heat up the room and itself.  Some heaters deliberately store heat whilst with others it is just a facet of the design.  When you switch the heater off again that stored heat is dissipated into the room.  In some scenarios you will benefit from this stored heat, in other you will not.      

QrizB

LittleVermin said:

Rointe's printed material was the subject of three complaints to the Advertising Standards Authority - all 3 complaints were upheld in an adjudication on 19th January which steviegee1982 and fb1969 told us about 4 months ago - here's the link again: http://www.asa.org.uk/ASA-action/Adjudications/2011/1/Rointe/TF_ADJ_49624.aspx

BUT since March the ASA has been able to adjudicate on websites and on Rointe's website on this page http://www.rointe.co.uk/radiator-k-series.html I see a bold heading:

K Series LOW CONSUMPTION DIGITAL ELECTRIC RADIATOR

Down below there's this:


In the K Series radiator test, made in an independent laboratory, we used a 1,430W model to simulate the heating of a 12 m2 room with the thermostat set to 21ºC. The average power needed during the test was 560W, which represents a 40% of the nominal power. That is what we define as the equivalent ratio of consumption, as you can see in the table above.


The ASA asks a company being complained about to comment on the draft adjudication (I've been there - with a complaint!) and apparently Rointe didn't produce any reports, etc justifying their printed advert and brochure. Maybe they'll be more forthcoming with justification for their web material?

Is this clever wording? i.e. a thermostatically controlled cheapo fan heater of the same poswer could give exactly the same results ... and be a LOW CONSUMPTION DIGITAL cheapo ELECTRIC RADIATOR?

Little Vermin posted that on the 7th of June 2011. Ten years (and a few days) later and we've got this gem from their website:

In essence they're saying "if you fit a heater that's 2.5x as big as you need, it will only run for part of the time" and are claiming that as an energy saving.

I haven't seen that much fuzzy logic since "the science bit" of shampoo adverts

Edit to add:

The 2011 ASA ajudication isn't available from their website any more but the Internet Archive helpfully have a copy here:
https://web.archive.org/web/20120621231039/http://www.asa.org.uk/ASA-action/Adjudications/2011/1/Rointe/TF_ADJ_49624.aspx

And there's a second ASA ajudication from 2012 here:
https://web.archive.org/web/20120623222827/https://www.asa.org.uk/ASA-action/Adjudications/2012/6/Rointe/SHP_ADJ_186824.aspx

Paulb_2

Reed_Richards said:

All electric heaters convert 100% of their electricity into heat so they are all equally efficient in that sense.  When you switch on a heater it will heat up the room and itself.  Some heaters deliberately store heat whilst with others it is just a facet of the design.  When you switch the heater off again that stored heat is dissipated into the room.  In some scenarios you will benefit from this stored heat, in other you will not.      

Some of the heaters on the Which report are fan heaters so don't store heat but still heat up the room at different rates for the same power input suggesting some are more efficient at heating than others?

Swipe

Paulb_2 said:

Reed_Richards said:

All electric heaters convert 100% of their electricity into heat so they are all equally efficient in that sense.  When you switch on a heater it will heat up the room and itself.  Some heaters deliberately store heat whilst with others it is just a facet of the design.  When you switch the heater off again that stored heat is dissipated into the room.  In some scenarios you will benefit from this stored heat, in other you will not.      

Some of the heaters on the Which report are fan heaters so don't store heat but still heat up the room at different rates for the same power input suggesting some are more efficient at heating than others?

The only way an electrical heater can not be the same efficiency as another is loss through a turning fan, noise or light. Other than that they are all equal, regardless of the type.

Cardew

Paulb_2 said:

 If this is the case that for the same power input, one heater gets the room up to temperature in half the time of another one then that is going to cost half as much to do that. Doesn't this mean heater efficiency can vary by as much as 50%?

No; albeit some fims would like you to think that is the case.

About the fastest and cheapest domestic appliance to heat a room is a 3kW fan heater costing around £10 that will give almost 'instant' full heat. Have it on max heat for 30 minutes(without the thermostat operating) and it will use 1.5kWh and after that 30 minutes it will produce no heat.

At the other extreme take qty 3 oil filled radiators (each 1kW) and in 30 minutes they will have used 1.5kWh but the room will not be as warm as using the fan heater, as a proportion of that power will have been used to heat the oil in the radiators. However crucially that heated oil will continue to produce heat after there is no power input.

Both examples will have produced exactly the same amount of heat for the same  power input and both are 100% efficient.