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Boiler installation - options?

Posted by Daniel Coote, on
Hello I have been q**ted almost 6.5k by Scottish Gas for a boiler installation. I understand I can obtain an average for boiler installation from the guides; however I maintain my case is slightly more complicated - so bear with me. My family currently live in a 4 bedroom detached 1996 built Wimpey home in East Kilbride where the current (and original boiler) is situated in a kitchen cupboard (surrounded by internal walls and with a lengthy and now frowned upon internal flue). The 20 year old boiler we have is the infamous IMI Powermax 135 which although is fairly efficient for it's age is now playing up more frequently. While it's not impossible to use (roughly) the same flat/horizontal flue line as before, Scottish Gas insist that the best future boiler installation is to move it up to the upper floor of the house (upstairs airing cupboard where mains water etc is currently accessible) and 'flue out' through the roof. This would provide us with more space where the current boiler is - although the hot water would come from a Gledhill 180ltr unvented stainless steel cylinder in the original cupboard downstairs. Four things to bear in mind too - 1) We like powerful showers and the Powermax gives us approx 20 ltrs/min of HW & two teenage daughters in the future (will need 2 showers at once)! HW flow is important! 2) The cupboard upstairs is not deep enough (and couldn't be easily made deep enough) for a Worcester Highflow, for example 3) By not using the flue downstairs it would allow an easier process (a future option) for us to knock-through an internal unsupported wall from the kitchen to the livingroom as the flue lies at and can't be increased above the visible height of the ceiling (approx 7.5ft). Our kitchen is not big compared with the rest of the house so mounting boilers elsewhere will impact on usable cupboard storage space. 4) The boiler (or any tank for that matter) could not be placed in the roof at all easily because there is no access to gable ends to attach heavy things onto I can understand why there intended setup would work - as is answers a yes to the above questions - but it's mighty exp**sive (I believe). The q**te contains everything from Worcester 24Ri boiler, the tank (mentioned above), vertical flue, scaffolding for roof access, pipe work, HIVE installation and 1 new electric point. Is this q**te reasonable? When I asked if it would be much less to go with the existing installation place (kitchen cupboard) - install a new and visible flue in approx the same place, Highflow boiler he thought the q**te would be in the region of 4.5k. Again does this seem reasonable? Obviously installing a new boiler in the original place would provide us with enough HW flow if the right boiler was sourced (Highflow or Baxi Ecoblue Advance maybe) but it leaves us with an ugly flue to look at and makes it much trickier to extend the kitchen area. I understand the q**te is just a single one so far but I intend on getting some more (obviously I can’t on this website until I know exactly the best option to go ahead with). Really sorry for the long 'question' but these scenarios have been hurting my head for some time and any advice on installation type and the q**tes would be massively appreciated! Thanks in advance Daniel.
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