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Replace cylinder, change to combi system or something else?

  • 10-11-2021 11:16pm
    #1
    Myles de Selby
    Registered Users, Registered Users 2 Posts: 12 ✭


    I have a leak in my hot water cylinder coil which I have lived with for a while but it is now causing problems with low pressure and my boiler (natural gas) is not working most of the time.

    It will cost 600 euro to have a new cylinder supplied and fitted but I am wondering whether I'd be better spending more now and switching to a more efficient combi system.

    The current boiler is a Mynute 16e so somewhere between 11 and 19 years old. Small 3 bed house with 7 rads but with a ground floor annex with 3 more rads, so ten total.

    Im thinking of zoned controls especially as I am letting the annex in the future. Two bathrooms: The shower in the house is a 9kw electric and in the annex a simple shower/ bath tap unit (but pressure is decent).

    At least some of the rads need replacing so I am looking at a few grand to update the system... and then Im thinking how long will a natural gas boiler be a good option with the move to heat pumps etc. ... and back to considering the shorter term fix and seeing how the technology has developed in 3 or 4 years.

    So going round in circles. Any suggestions?



Comments

  • #2
    Sleeper12
    Registered Users, Registered Users 2 Posts: 17,190 ✭✭✭✭Sleeper12


    Cheapest option is replacing the cylinder.

    Doing a combi boiler correctly isn't cheap. If you have a power shower in a plastic box like a Mira Event, triton AS2000XT or Aqualisa Aquastream then these might need to be replaced if you go with a combi boiler

    I'd replace the cylinder & leave the boiler alone if it's still working ok. Heat pumps are the way forward in the future but you need an extremely well insulated home for a heat pump to be able to heat your home correctly



  • #3
    Myles de Selby
    Registered Users, Registered Users 2 Posts: 12 ✭Myles de Selby


    https://www.boards.ie/discussion/comment/118149425#Comment_118149425

    Thank you. The shower is electric (Triton t90sr) fed from tank rather than a power shower so not affected.

    My house is flimsy early 80s build and I reckon it would take a lot of work to get a high enough insulation level for the heat pump.



  • #4
    Sleeper12
    Registered Users, Registered Users 2 Posts: 17,190 ✭✭✭✭Sleeper12


    I'd replace the cylinder. I'd keep boiler till it breaks. I'd then still replace it with another gas boiler. Eventually there will be a cut off date where gas boilers can no longer be sold. I would buy another one just before this date.

    The above thoughts might change if the government give massive grants for insulation and heat pumps



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