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Cheapest way to use the immersion heater

edited 30 November -1 at 12:00AM in Energy
150 replies 318.5K views
1235715

Replies

  • Woah....do not.. under any circumstances leave the immersion on all the time. They use a lot of electricity and are hugely expensive to run.
  • Dinx_2Dinx_2 Forumite
    7 posts
    even using the 2 rate meter? using it during the night?
  • MagentasueMagentasue Forumite
    4.2K posts
    How much are you paying per kwh for gas? How much for off peak electricity.
  • Dinx_2Dinx_2 Forumite
    7 posts
    ok let me do some research.

    I am on the standard dual fuel trarrif

    gas -
    tier 1 7.160p per kwh
    tier 2 3.410p per kwh

    electricity
    night flat rate 5.584p kwh
    day tier 1 32.379p kwh
    day tier 2 12.157 kwh

    vat inclu
  • MagentasueMagentasue Forumite
    4.2K posts
    Assuming you use enough gas to pay for all of the tier 1 kwh, you would be paying 3.4p per kwh to heat your water by gas, or 5.6p by electricity.
  • Important update! We have recently reviewed and updated our Forum Rules and FAQs. Please take the time to familiarise yourself with the latest version.
  • Dinx_2Dinx_2 Forumite
    7 posts
    ok I understand that. I just really have to work out how much units are charged at tier 1.

    only use the immersion heater while I am in tier one and then let the gas boiler do rest of the work when I hit tier two.
  • Dinx_2Dinx_2 Forumite
    7 posts
    Tier 1 applies to the first 670 kWh per quarter (2680 kWh per annum for Pay As You Go Energy™) and all subsequent consumption is charged at Tier 2.

    thats is copied from British Gas website.

    this gets very confusing now becuase bills dated dec says i have been charged first 749kwh at tier one and then my latest bills is 661kwh at tier one. either there has been a change in the amounts of units in tier one or I have been billed wrongly.
  • MagentasueMagentasue Forumite
    4.2K posts
    DINX wrote: »
    thats is copied from British Gas website.

    this gets very confusing now becuase bills dated dec says i have been charged first 749kwh at tier one and then my latest bills is 661kwh at tier one. either there has been a change in the amounts of units in tier one or I have been billed wrongly.

    Different number of days in those quarters?
  • Dinx_2Dinx_2 Forumite
    7 posts
    could be then becuase I have always sent a meter reading just to make sure its all correct and I sent a new bill with the updates changing the number of days in a quarter. I need to dig up the past few bills now the online account only lets me go back 3 bills.
  • CardewCardew Forumite
    28.3K posts
    Part of the Furniture 10,000 Posts Name Dropper Rampant Recycler
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    ben37564 wrote: »
    Woah....do not.. under any circumstances leave the immersion on all the time. They use a lot of electricity and are hugely expensive to run.

    Within reason it doesn't matter how long you leave them on as they all have a thermostat which switches them off - just like your electric kettle. except the thermostat switches them off at a set temperature, say, 65C.

    There really is a lot of nonsense talked about the huge cost of leaving on immersion heaters 24/7.

    Whilst I am not in any way suggesting you should leave it on 24/7 the real difference between 24/7 and timed is not more than 1kWh to 2kWh a day.
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