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ASHP - Terraced house
Comments
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waqasahmed said:Thanks. Looking further it seems that the cellar would require venting to the outside should you pop an ASHP in there
So it is "doable"NE Derbyshire.4kWp S Facing 17.5deg slope (dormer roof).24kWh of Pylontech batteries with Lux controller BEV : Hyundai Ioniq51 -
Picking this up again - as looking at installing an air source heat pump in my newly purchased terraced house.
The house has a 3m (length) by 5.5m (wide) flat roof extension. I bought a heat pump company around earlier, and they told me that I couldn't put the heat pump on the flat roof, because it is within 3 metres of the nearest neighbour's bedroom window. The only feasible way around it, according to them is to install a wall (dwarf wall style) between my flat roof extension and their flat roof extension. I don't really want to do the latter. I have been researching since, and cannot see this restriction referenced anywhere.
We are not in a conservation area, and our house is not listed. How can it be that we cannot put a 1.3m high heat pump on the flat roof?0 -
Noise!
3 metres from a neighbours bedroom window will be too noisy for them, isn't it obvious?0 -
Hi - I don't think it is obvious. Everywhere references 1 metre distance from the neighbouring property, including windows, and just having regard to noise not exceeding 40-60 decibels. The latter is not in planning law, so I don't see how it can be enforced.
Either way newer ASHP units barely hit the lower end of this range.0 -
MCS require a maximum of 42dB at a habitable room which includes bedrooms.
MCS noise laws are part of permitted development, if you exceed this using the maximum noise quoted in the manufacturers documents using the MCS noise calculations then it is not permitted development and planning permission is required.
I doubt you would get it, I didn't get it at 42.5 dB 12 metres from a neighbours bedroom window.
Surely it is obvious, how many people would want a neighbours heat pump within 3 metres of their bedroom window?
Would you?
And even if your neighbour has no objection, mine didn't, it isn't about them, it is about who may move in later
I would imagine that most people would agree with me, it would be really inconsiderate to install a heat pump within 3 metres of a neighbours bedroom, I would expect a load of grief if I did that!0 -
Thank-you for clarifying - and understood now.
Need to look at all of the options fully, to understand if an ASHP is most suitable for us.1 -
Hi All - posting here again, as I am a tad confused.
We have had an updated ASHP system quoted. The maximum DBA is 42DB.
We are looking at citing the unit in the garden. Along the side of the boundary. Given it is 42DB, does it still need to be 1metre from the fence? It would be 8M from the window of the nearest property (except for ours). If yes, does anyone recommend any architects who are used to submitting designs/plans for the systems that they can recommend?0 -
I'm guessing this house is in Wales, where the conditions for permitted development are 3 metres from the boundary. It is 1m in England. https://www.gov.wales/planning-permission-heat-pumps#:~:text=Installing%20a%20ground%20source%20or,to%20check%20on%20local%20policy.koru0
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wrightlilly said:Along the side of the boundary. Given it is 42DB, does it still need to be 1metre from the fence? It would be 8M from the window of the nearest property (except for ours). If yes, does anyone recommend any architects who are used to submitting designs/plans for the systems that they can recommend?
koru0 -
tacpot12 said: A Ground Source Heat Pump might be viable if you have a long garden. Slinky coils need about 50m² of outdoor space per kw if they are installed horizontally, and I would expect you would need at leat 8kw for your house, so your back garden needs to be at least 400m² (or 1.5 tennis courts if that helps visualise the size needed). There is an option to have the slinky coils installed vertically, but getting the machinery that can trench deep enought (at least 2m) into a back garden is going to be very difficult, unless there is unrestricted access from the rear, e.g. from a farmer's field.A bit late in the day to comment, but I'll my comment anyway...An alternative to slinkies is a borehole - You'd need around 10m of borehole depth per kW, so an 8kW GSHP would have an 80m borehole (subject to type of soil). There are some dinky little drilling rigs that can squeeze through small passageways. For example, the Dando Terrier is just 790mm wide. However, it is limited to a drill depth of around 40m with the right mast according to the Dando rep. If you have space for two bore holes, it may be an option.If you are fortunate enough to have ~2.5m wide access, options for bigger drilling rigs increase considerably. In which case, you could get a single 80m or deeper borehole. Drilling boreholes are not cheap though...
Her courage will change the world.
Treasure the moments that you have. Savour them for as long as you can for they will never come back again.0
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