Recent content by nightmareflat

I have a Ferroli LEB 9.0 TS 9kW Electric Boiler Can I add a heating circulator booster pump, like a Grundfos Alpha 1, to the output pipe so that the flat heats up more quickly? If it's not advisable is there a reason why? Thanks

So with the 9KW, the flow temperature gets up to 70c within about 30 mins on a ~5C day. So, presumably that would take 2.25 x long (so ~70 mins with a 4KW boiler). But once it gets to that temperature it then keeps it there , so would it not just be cooler for the first 70 mins (rather than...

Thanks. I think where I'm confused is that if my heating is only on for c. 10 hours a day, and the boiler is currently using 6.5 hours of full whack electric per day, then surely if my 4KW was running for 9 hours - it still wouldn't be costing as much? 6.5 x 9 = 58.5 KWH 10 x 4 = 40 KWH

Cost per day for heating I have a smartmeter. On days when I don't turn on the central heating at all the daily cost is around £2.50 - when the heating is on it's £17, 18, 20 etc. Est. £15 surplus / £2.25 per hour = 6.6 hours of boiler running on full whack The house is set to around 20 on...

Sorry, forgot to add. It's a leasehold flat so I can't install solar panels, ASHP nor air conditioning. I also don't have the storage space/capacity to put any more water tanks in. The existing 150l cylinder just heats up hot water for shower/kitchen/bath taps - it is not connected to the...

Hi, Under the advice of my builder I replaced the gas combi boiler in my flat with an electric 9kw ferroli boiler + an immersion heater tank. It's a 2 bed 900sqfoot flat with 3 large radiators and 2 small ones. As expected, the electric bills are ghastly. I've had double glazing installed...