Boiler flo

FreeBear

HumberFlyer said:

I assume your house is at 18 before going to bed, I suggest you don't let it go off at bedtime but to reduce the setting to 16 deg. Yes, it will fire now and again through the night to hold 16 deg but won't have to work hard the following day to reach 18 deg.

Yup. I have a minimum overnight temperature of 17°C, and a daytime temp of 18°C rising to 19°C in the evening. Currently running at 25-35KWh per day in the current cold spell.

But... It would appear that my late 1920s semi is better insulated than some - The boiler is an old Baxi Bermuda, so not as efficient as a modern combi.

Andy499

Ally_E. said:

Don't let the house get so cold. 13C is cold and the fabric of the house will take a long time to warm back up. Keep it at 15-18C 

I dont understand how anyone can do this?

My house is at 11 degrees during the day, and 9 degrees over night, the heating goes on for 2 hours at night just to warm up a bit and that is costing me £5 in gas a day.

If i had my house at a CONSTANT 15-18 the heating would be on 24/7 - no one (except rich people) can afford to do that.

Andy499

HumberFlyer said:

I assume your house is at 18 before going to bed, I suggest you don't let it go off at bedtime but to reduce the setting to 16 deg. Yes, it will fire now and again through the night to hold 16 deg but won't have to work hard the following day to reach 18 deg. Mine is a worcester bosch ...63 deg flow temp. See here I wrote on a different posting:

HumberFlyer said:

The weather has been consistent the last few days to do a test.... 0 deg. Our normally goes off at 9pm to 9am but have tried not switching it off but reducing through the night to 18 degrees so not working so hard the following day to get the temperature up, it would be normally be16 deg at 9am..........  The result: On for 12 hours, 20/21 deg cost me £2.55 (65kw/h). On for 24 hours 20/21 but 18 through the night... cost me £2.61 (66kw/h)  I have done this test other years with similar results. So for me/us at home near enough 24/7 running the c/h for 24/7 is a yes. The extra cost in elec' was negligable.

How is 65kwh costing £2.55? Its 10p a Kwh. Thats £6.50 at least?

Silverbird65

Sorry to hear that . I agree but I have mine on at least 5hrs a day 3 at night 2 in the morning and gas fire during day to just get some heat as I am disabled

. We have had financial help I think I am using it up.

FreeBear

Andy499 said:

Ally_E. said:

Don't let the house get so cold. 13C is cold and the fabric of the house will take a long time to warm back up. Keep it at 15-18C 

I dont understand how anyone can do this?

My house is at 11 degrees during the day, and 9 degrees over night, the heating goes on for 2 hours at night just to warm up a bit and that is costing me £5 in gas a day.

If i had my house at a CONSTANT 15-18 the heating would be on 24/7 - no one (except rich people) can afford to do that.

If your house is down to 9-11°C, then you really need to look to see where you are losing heat. Plug the draughts, insulate as much (and where) you can. Yes, insulating a building can be expensive, but what price do you put on comfort ? I'm not rich, but can maintain a temperature of 17-19°C without spending a fortune (yesterday cost about £3).

Freezing your nuts off is not healthy.

Ballymoney

What’s the easiest method of measuring the return temp? 

We’ve got a WB Greenstar 30kwh boiler and set the flow to somewhere in the region of 60-65c (5 on the dial) but absolutely no idea what the return temp is? Guessing this is dictated by the flow speed / lock shield position on the radiators?

peter3hg

Ballymoney said:

What’s the easiest method of measuring the return temp? 

We’ve got a WB Greenstar 30kwh boiler and set the flow to somewhere in the region of 60-65c (5 on the dial) but absolutely no idea what the return temp is? Guessing this is dictated by the flow speed / lock shield position on the radiators?

Some boilers can display it but you would need to give the exact model number of your boiler.

Otherwise something like this clipped to the return pipe will give a reasonable idea.
https://www.amazon.co.uk/gp/product/B0B4JG8KCQ/

HumberFlyer

Andy499 said:

HumberFlyer said:

I assume your house is at 18 before going to bed, I suggest you don't let it go off at bedtime but to reduce the setting to 16 deg. Yes, it will fire now and again through the night to hold 16 deg but won't have to work hard the following day to reach 18 deg. Mine is a worcester bosch ...63 deg flow temp. See here I wrote on a different posting:

HumberFlyer said:

The weather has been consistent the last few days to do a test.... 0 deg. Our normally goes off at 9pm to 9am but have tried not switching it off but reducing through the night to 18 degrees so not working so hard the following day to get the temperature up, it would be normally be16 deg at 9am..........  The result: On for 12 hours, 20/21 deg cost me £2.55 (65kw/h). On for 24 hours 20/21 but 18 through the night... cost me £2.61 (66kw/h)  I have done this test other years with similar results. So for me/us at home near enough 24/7 running the c/h for 24/7 is a yes. The extra cost in elec' was negligable.

How is 65kwh costing £2.55? Its 10p a Kwh. Thats £6.50 at least?

You just have to believe me 

Silverbird65

You are on a fixed rate till August 2023 no wonder you use less.

macman

Andy499 said:

Ally_E. said:

Don't let the house get so cold. 13C is cold and the fabric of the house will take a long time to warm back up. Keep it at 15-18C 

I dont understand how anyone can do this?

My house is at 11 degrees during the day, and 9 degrees over night, the heating goes on for 2 hours at night just to warm up a bit and that is costing me £5 in gas a day.

If i had my house at a CONSTANT 15-18 the heating would be on 24/7 - no one (except rich people) can afford to do that.

It's not feasible that your boiler is burning 25kWh every hour, that's beyond the max output of most boilers in DHW mode, let alone CH. What is the boiler rating?
No one is suggesting leaving the heating on 24/7, but running it maybe 2 hours in the morning and 4 or 5 at night is not atypical.
You need to do something to reduce the heat loss-no way should the house drop as low as 9C overnight unless it's leaking heat.