Heard that combi boilers fire up when you turn on the hot water tap... So when washing your hands during a day, they burn crap tons of gas heating water that spends its time going through the pipes, only for you to turn off the hot water tap before it comes out of the thing.

Guy from swalec said it was about £90 a year in wasted gas.

depends on your house. You're not wasting gas on keeping a tank full of water hot. Also, it still takes time for the water to get form the boiler to your tap.
I am lucky as My Boiler is right above my Kitchen & my bathroom next to where the boiler is. So the longest the hot water has to go is about 5m of piping to the kitchen sink & 2m to the bathroom.


I get hot water out of the kitchen tap in less than 10 seconds. Shower is almost instant.
The boiler is only used when I shower really. Dont use hot water out of a tap often.
Dishwasher heats the cold water up.


My average gas bill is less than £40 a month averaged over 12 months (always below the suppliers estimate - but my eleccy is always over!).
I also a full gas range cooker.

Quote from: Eggtastico on December 11, 2013, 15:11:55 PM
Make sure all the radiator gets hot & not just the bottom.

heat rises. its an impressive trick for the bottom to get warm and not the top. ive got a rad which does the opposite. it sometimes can get a cold pocket near the exit. usually caused by one of them fancy baffled rads that has an airlock. smacking it usually helps.

one more to add to the list.

get a boiler engineer out to tune the boiler and rads.  we've been spanking our boiler all year and still couldnt get the office room warm.
turns out the boiler was on a low setting and was only putting 42 degree hot water out. should be 70 odd. he tuned the boiler then turned some of the rads down until all rooms got warm at same rate.

and another one. get a remote thermostat.
take it into the room you use most. turn the rads in rooms you dont use at all down a little. you wont believe how many houses have the thermostat in the hallway. why? you spend no time in there and its drafty.

Quote from: bytejunkie on December 19, 2013, 12:28:22 PM

Quote from: Eggtastico on December 11, 2013, 15:11:55 PM
Make sure all the radiator gets hot & not just the bottom.

heat rises. its an impressive trick for the bottom to get warm and not the top. ive got a rad which does the opposite. it sometimes can get a cold pocket near the exit. usually caused by one of them fancy baffled rads that has an airlock. smacking it usually helps.

if a radiator is full of air and needs bleeding, it'll be cold at the top where the air pocked is :-)

Quote from: bytejunkie on December 19, 2013, 12:28:22 PM

Quote from: Eggtastico on December 11, 2013, 15:11:55 PM
Make sure all the radiator gets hot & not just the bottom.

heat rises. its an impressive trick for the bottom to get warm and not the top. ive got a rad which does the opposite. it sometimes can get a cold pocket near the exit. usually caused by one of them fancy baffled rads that has an airlock. smacking it usually helps.

Air dont heat the radiators, hot water does! Also its a pressured system filled with water. If there is any air in the system, then it usually found in a radiator as the pressure is not pushing the water all around the rads.
if the rads arent balanced you could get cold radiators.

Quote from: bytejunkie on December 19, 2013, 12:31:41 PM

turns out the boiler was on a low setting and was only putting 42 degree hot water out. should be 70 odd. he tuned the boiler then turned some of the rads down until all rooms got warm at same rate.

balancing.
http://www.homebuilding.co.uk/advice/DIY/how-balance-radiators

Bled our radiators as the dining room was cold in the top half.  Couldn't believe how much air was in it.  The rest were fine though.

Sent from my GT-I9300 using Tapatalk

Quote from: zpyder on December 19, 2013, 20:03:38 PM
Bled our radiators as the dining room was cold in the top half.  Couldn't believe how much air was in it.  The rest were fine though.

Sent from my GT-I9300 using Tapatalk

Is there  a pressure gauge on your boiler?  you may need to top the water up - that air needs to be replaced with water.

How about about 16 p a day per room 5 rooms 80 p   unless u have small rooms it will be less  

http://www.trueactivist.com/how-to-easily-heat-your-home-using-flower-pots-tea-lights/