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Best heating options - C1 BER

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  • 18-04-2024 3:20pm
    #1
    MarkP
    Registered Users Posts: 15 ✭


    We're renovating a dormer house built c.20 years ago, currently rated C1, and looking at heating options (currently OFHC boiler and rads). We can improve the insulation/bridging a little bit in the loft, front door/porch, etc. but much more than that would mean all new triple windows. Ideally, we'd like to keep the one chimney flu for a wood stove (but not as primary heat source).

    We're hoping to swap the gravity fed hot water for a mains pressure system, so we'll be replacing the hot tank anyway. Also replacing hard floor downstairs. Underfloor heating would be ideal downstairs if we could make it work, and lose the radiators, but unsure what height we have to play with there without full excavation cost.

    House is in a rural location, large plot of land, exposed and south facing, and there's a piped well bore (no longer used for water supply).

    Any suggestions, experiences? Water/electric, solar, wind, air/ground source pumps, control systems? How to arrive at a best value decision?



Comments

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    #2
    Sleeper12
    Registered Users Posts: 16,888 ✭✭✭✭Sleeper12


    With a C1 BER you will need gas or oil imo. Heat pump will cost you a fortune unless you can improve the BER. Minimum BER for heat pump is B2 but ideally in the A range.



  • Options
    #3
    Lenar3556
    Registered Users Posts: 1,354 ✭✭✭Lenar3556


    https://www.boards.ie/discussion/2058347462/best-heating-options-c1-ber

    Oil I think would be the more cost effective.



  • Options
    #4
    MarkP
    Registered Users Posts: 15 ✭MarkP


    OK, so we'll need to work on the current rating if we can. Maybe we can pump the wall cavities? Additional loft fibre, dormer slopes? Have to think about the windows. As far as we know from the old plans:

    Floors - 75mm sand cement screed, 150mm concrete slab, 55mm insulation under entire slab, 1 layer 1000 gauge visqueen

    Walls - 300mm cavity wall construction, 100mm concrete block outer leaf, 100mm cavity with 50mm insulation, 100mm concrete block inner leaf (150mm vents)

    Windows - hardwood, double glazed (we have quite a lot of large windows)



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