Advertisement
If you have a new account but are having problems posting or verifying your account, please email us on hello@boards.ie for help. Thanks :)
Hello all! Please ensure that you are posting a new thread or question in the appropriate forum. The Feedback forum is overwhelmed with questions that are having to be moved elsewhere. If you need help to verify your account contact hello@boards.ie
Hi there,
There is an issue with role permissions that is being worked on at the moment.
If you are having trouble with access or permissions on regional forums please post here to get access: https://www.boards.ie/discussion/2058365403/you-do-not-have-permission-for-that#latest

Air to Water Heat Pump - Retro Fit

  • 21-02-2017 10:59pm
    #1
    Road-Hog
    Registered Users, Registered Users 2 Posts: 1,412 ✭✭✭


    Hi there, looking for some advice on the above. Moving house shortly, existing heating system is oil fired with rads and is circa 17-18 years old all single zone, house has a BER of D1.

    Firstly is it possible/practical to install an air to water heat pump that will adequately heat the rads and hot water.

    I've done some 'google based' research which gives mixed views but a common comment is that rads and hot water with an the air/water heat pump will not reach the same temps as conventional oil/gas systems, also heat pumps are more suitable to under floor systems as opposed to conventional radiators.

    Secondly what sort of capital costs would I be looking at, house is approx. 2,300 sq ft and has eleven 17-18 year old radiators?


Comments

  • #2
    agusta
    Closed Accounts Posts: 1,590 ✭✭✭agusta


    Air to water will get the water to the same temperature as oil/gas
    Air to water will not get the radiators to the same temperature as oil/gas,but it does not have to.Air to water can maintain a consistent and desired temperature to every room in your house 24/7. i.e 18/19 or 20 degrees etc .It would be hard to get this consistent temperature with oil/gas due to the cost of oil/gas
    If your are doing renovation work in your house it would be a good time to do it.You probably will have to change some radiators.old cylinder removed.Make space for the air to water unit and space for air to water cylinder etc.There is a fair bit of work involved.My brother is a builder and has fitted alot of air to water heating units to both new houses with underfloor heating and older houses with radiators that he renovated/extended.He fits only this brand..
    http://www.ashgrove.ie/


  • #3
    TPM
    Registered Users, Registered Users 2 Posts: 871 ✭✭✭TPM


    Personally with the information provided I would currently stay away from heat pumps.
    With the age of the house you would be looking at considerably increasing the insulation although not practical to improve the floor insulation.
    You will need to draught proof the house and possibly the cavity
    You may need to upgrade the windows and doors.
    You will need to change and increase the size of the radiators.
    All the heating pipes will need to be properly insulated.
    The heating pipe and controls may need to be upgraded.
    You would most likely need to upgrade your hot water cylinder.
    When the above is completed you would need to get a comprehensive assessment to calculate the heat loss of the house to determine the size of heat pump required
    The principle of heat pumps is to produce constant low level heat which can work well but if heat loss is even slightly higher the running costs increase dramatically


Advertisement