Worcester Heatslave 15/19 - electricity usage

Ripl3y

Hi all,

I am new to the site and need advice please regarding the Worcester Heatslave 15/19 boiler which is in the house I have just moved in to.

I have just received my first and final electricity bill, having switched to a paygo meter which is what I am used to, and for just under 4 weeks it is £65.00. This is the same as 3 months worth in my old house.

I never use over £6.00-£7.00 per week so this was a shock. The only thing which is different is the boiler.

Can someone please tell me how much electricity this boiler should use. Or tell me how to work it out. It's a combi water/heater boiler which was only on for about 30 mins in the mornings (turned off last week), and a few hours in the evenings. It will only be used during the winter months.

I lived in a house with a combi boiler before and I still only used approx £6.00 electricity per week.

All advice appreciated thanx.

w50nky

I have this boiler, it does not seem to use much power really It just has the integral pump and control systems similar to most other boilers. I don't have my amp clamp meter at the moment so cannot give a definite consumption guide but my leccy bill is approx £32 per month. @10p per Kwh I believe. Boiler on couple of hours morning and evening For hw only.

Link to manual here: http://www.london-plumbers.org.uk/manuals/worcesterbosch/oil%20heatslave%2012-14.pdf may help you in future
.

Ripl3y

Hi w50nky, thanx for your reply. In my ignorance, if you used the boiler for CH & HW would the cost be the same or more? I was expecting an increase, but no more than approx £40.00 per month. If you do get the chance to give a definite reading that will be appreciated thanx.

Cardew

Are you sure that your bill was based on the correct actual opening meter reading?

Ripl3y

Cardew wrote: »

Are you sure that your bill was based on the correct actual opening meter reading?

I gave the reading from the meter the day I moved in - so if it was incorrect it's because I read it incorrectly ;-( The engineer who installed the paygo meter took the final reading. The only other thing I can think of is that my landlord had workmen about the last few weeks, and maybe they managed to get access to use my electric while I have been at work? I have asked the question. Failing that this boiler really is expensive to run.

Cardew

I am not sure why you think the boiler is the culprit for high electricity consumption?

w50nky

Ripl3y wrote: »

Hi w50nky, thanx for your reply. In my ignorance, if you used the boiler for CH & HW would the cost be the same or more? I was expecting an increase, but no more than approx £40.00 per month. If you do get the chance to give a definite reading that will be appreciated thanx.

The consumption is the same for hw & heating its just your boiler will run for longer if you are using ch. The diverter valve simply directs water to the rads when hw tank is at temp. As others have suggested I would tend to look elsewhere for the culprit.

Ripl3y

Cardew wrote: »

I am not sure why you think the boiler is the culprit for high electricity consumption?

Hi, thanx for your reply, because all other appliances are the same - this is the only extra appliance now being used. I have some of the radiators turned down to 1 (out of 6) and they are still burning hot to the touch. I've turned the water off via the boiler and that has made a difference. That's why I think it's the boiler, I can't think of anything else. Any ideas?

Cardew

Ripl3y wrote: »

Hi, thanx for your reply, because all other appliances are the same - this is the only extra appliance now being used. I have some of the radiators turned down to 1 (out of 6) and they are still burning hot to the touch. I've turned the water off via the boiler and that has made a difference. That's why I think it's the boiler, I can't think of anything else. Any ideas?

The setting on the radiator either 1 or 6 does not affect how 'hot to the touch' they get.

The temperature control on the boiler determines how hot the water in the CH system will be(say 70C). With CH on that 70C water is flowing round the system.

The settings on the radiator control(TRV) determine the air temperature in the room. with '1' being, say, 16C in steps up to '6' being say, 26C.

Water entering the radiator set to '1' will be at 70C the same as it would be if the radiator was set at '6'. The difference is that with it set at '1' it will shut off the water to the radiator as soon as the room temperature reaches 16 C.

I have no idea what has increased your electricity consumption. It is just that a boiler is a low consumption appliance - just a pump and electronics - and there is nothing to cause the sort of consumption increase you are having.