Posting a message to the forum will remove the above advertisement
  1. Hi, welcome to the new look - Login with your usual login details, or sign up if you don't already have an account. If you post just once, all the advertisements get automatically removed. We have some competitions coming soon, and lots of new feaures. 

Discuss BTU Calculations in the Central Heating Forum area at

  1. Lee_Howard

    Lee_Howard New Member

    Hi everyone,
    can anyone recommend a good BTU app. Tried a few. Does anybody rate or recommend any perticular apps?

    Thanks again!
    • Like Like x 1
  2. johnf

    johnf Active Member

    The Heat loss calculator from HHIC used to be good until they doubled the price over night. I asked them about this and they could not even be bothered to reply so Customer service is not that good.
  3. townfanjon

    townfanjon Trusted Plumber GSR Top Contributor!!

    Kw's pal , btu's went years ago lol .
    • Like Like x 3
  4. Chalked

    Chalked Plumber GSR

    Mr combi app
    You can select the level of insulation and window area. It's a few quid, but good.
  5. Lee_Howard

    Lee_Howard New Member

    Hahha just got back into the game mate, thanks for the heads up!
  6. chris watkins

    chris watkins Plumber

    Last edited: Jan 9, 2017
  7. Best

    Best Trusted Plumber Top Contributor!!

    Multiply Watts by 3.412142 to get to BTUs if you are old school
  8. AlexGas

    AlexGas Plumber GSR

    Hope you've changed your prices. :conehead:
    • Like Like x 1
  9. AlexGas

    AlexGas Plumber GSR

  10. townfanjon

    townfanjon Trusted Plumber GSR Top Contributor!!

    I have yet to trust an app for these calcs , in my experience they are way over sized , however I may just try the wrong ones .
    Its the long way but I always feel its the best way, I do them long hand on a piece of paper just like we were shown at plumbing school .
    • Like Like x 4
  11. Lee_Howard

    Lee_Howard New Member

    Haha yes Alex definitely, thanks for your concern! Crazy to see how it has all increased!
    • Like Like x 1
  12. Best

    Best Trusted Plumber Top Contributor!!

    The OP has just started back to plumbing and his brain might only compute in btus, - same as me. I still use inches and feet where I can! :smile:
    • Like Like x 1
  13. Lee_Howard

    Lee_Howard New Member

    Haha, yes mate! I was doing that other night. Then started browsing different apps. Times change and If we can save 35-40mins an evening after grafting all day, it's gotta be done :)
  14. Last Plumber

    Last Plumber Plumber GSR

    Mear Calculator.
    • Like Like x 2
  15. joni os

    joni os Plumber

    Apps. may be convenient for domestic, but when it comes to commercial, manual calcs. allow consideration of options and an understanding of the building, often eliminating the necessity for heating in areas of low fabric loss, provided volumes are incorporated for purpose of air change when sizing perimeter rads.
    BTU is defined as energy required to heat mass of water by rise in temperature and for that purpose is, at times, convenient,with an easy conversion to Kw.
    I've seen fingers press the wrong button too many times to fully trust an App.
    Nonsense in = Nonsense out
    • Like Like x 2