Advertisement
If you have a new account but are having problems posting or verifying your account, please email us on [email protected] for help. Thanks :)
Private profiles - please note that profiles marked as private will soon be public. This will facilitate moderation so mods can view users' warning histories. All of your posts across the site will appear on your profile page (including PI, RI). Groups posts will remain private except to users who have access to the same Groups as you. Thread here
Some important site news, please read here. Thanks!

heat pump and solar panels

  • 04-09-2018 10:05pm
    #1
    Registered Users Posts: 5 pitchfork


    I'm looking for advice about heat pump and solar panels. We were initially advised that we only needed a heat pump to heat a 260 sq mtr house. We have been told today that we need to have solar panels as well. The reason is due the provision of 4kWh/m2/Annum will require PV as the well as a heat pump since the heat pump alone will not meet the legal requirements of the building regulations under part L. Can anyone advise if there is an alternative to consider.


Comments

  • Moderators, Category Moderators, Motoring & Transport Moderators, Regional East Moderators Posts: 59,697 CMod ✭✭✭✭ unkel


    Solar PV does not work to heat your house in Ireland. I have no idea about the regulations under part L, they might say you'll be grand. But you won't.

    "Wind is Ireland's oil" - An Taoiseach, 25/05/2022



  • Registered Users Posts: 1,627 ✭✭✭ quentingargan


    pitchfork wrote: »
    I'm looking for advice about heat pump and solar panels. We were initially advised that we only needed a heat pump to heat a 260 sq mtr house. We have been told today that we need to have solar panels as well. The reason is due the provision of 4kWh/m2/Annum will require PV as the well as a heat pump since the heat pump alone will not meet the legal requirements of the building regulations under part L. Can anyone advise if there is an alternative to consider.
    This is quite a common problem. Your house is so well insulated that the heat pump isn't running enough to make your renewables component. Funnily enough, if you downgraded your double glazing, your heat pump might run enough to meet the renewables.

    Not that I would recommend that...

    Your BER assessor can work out how many panels you need. Usually 2 or 3 does the trick, but since extra panels are so cheap, you might put in a larger system to produce usable amounts of power and/or get your hot water from it in summer.

    The alternative is fossil fuel, oil or gas and solar PV alone. If your house is exceptionally well insulated, your heating bills won't be all that high either way


Advertisement