Home  5  Books  5  GBEzine  5  News  5  HelpDesk  5  Register  5  GreenBuilding.co.uk
Not signed in (Sign In)


Green Building Bible, Fourth Edition
Green Building Bible, fourth edition (both books)
These two books are the perfect starting place to help you get to grips with one of the most vitally important aspects of our society - our homes and living environment.

PLEASE NOTE: A download link for Volume 1 will be sent to you by email and Volume 2 will be sent to you by post as a book.

Buy individually or both books together. Delivery is free!

powered by Surfing Waves

Vanilla 1.0.3 is a product of Lussumo. More Information: Documentation, Community Support.

Welcome to new Forum Visitors
Join the forum now and benefit from discussions with thousands of other green building fans and discounts on Green Building Press publications: Apply now.

    @Mikel That's interesting, it's a pity they didn't give any information on the type of water storage system used in the three cases. I was surprised that a hot water tap was identified as the cause because I thought Legionnaires was spread via fine droplets of water being breathed in. As Topher has pointed out with an unvented mains system which is used regularly how can the bacteria exist. That was my reasoning for keeping the water at 45C.
    • CommentTimeSep 20th 2021
    The 'regularity of use' is sometimes questioned. Chlorine or other additives have a finite lifetime in water systems (I seem to remember about two weeks?). Bacteria can grow in 'dead legs' - parts of the plumbing that don't see regular flow. Apart from true dead legs, there are various bits that serve as such in our house. The pipes leading to the bath taps aren't used all that regularly, neither are all the showers (yes, a first world problem) etc. We do try to remember to flush them all through every month at least, but who knows. I assume that if legionella breeds in a water system that you regularly use, then your immune system will have time to develop some resistance at the same time. So I think that is one reason why there is a very low occurrence of legionella cases in people's own homes. Much greater risk elsewhere.
    • CommentAuthortopher
    • CommentTimeSep 21st 2021
    Today’s news about gas prices is interesting for us heat pump users, yes? Perhaps the increase in gas price will leak through to electricity. Yes?
    The wholesale price of gas has gone up x5 this year (depending whose numbers you believe) and the wholesale price of electricity has gone up x2 on average (excepting the mad spikes last week when there was no wind blowing).

    So your heating will likely become more expensive, but not increase by as much as if you were on gas central heating.

    Many utility cos buy gas/electricity well in advance, so it will take them time to filter through, those that did not will probably go bust :sad:
    • CommentAuthorrevor
    • CommentTimeSep 21st 2021
    One needs to distinguish between LPG and "gas". Seems that there is surplus LPG so that is not affected. (Yet)
    • CommentAuthortopher
    • CommentTimeOct 11th 2021
    It has been running for a few days now. Some things I have noted

    1. Run time. Although I have put in heat pump settings into Evohome and used the right 'boiler relay', I am concerned it is short cycling. I plan to contact Evohome and Daikin tech support.

    2. Daikin App is quite good and easy to use. I am able to turn HW and CH on and off as I wish.

    3. Circulating pump makes a noise when ever it runs. Would prefer it to be quieter.

    4. In today's light heating demand, when it starts, the circulating pump runs for about 9 minutes before the compressor starts. Then the compressor runs for about 6 minutes.

    5. When not calling for heat, the electrical consumption is about 100 watts. I view this as poor for such a modern device. Your TV is required to have less than 0.5 watt in standby.

    6. Seems lucky that I am insulated against large gas price increases, but I do expect my Octopus electricity costs to rise too.
Add your comments

    Username Password
  • Format comments as
The Ecobuilding Buzz
Site Map    |   Home    |   View Cart    |   Pressroom   |   Business   |   Links   

© Green Building Press