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Graham Hendra
Graham Hendra
@grahamh
Member
Reputable Member
Joined: Apr 14, 2021
Last seen: Apr 17, 2025
Profile Activity
Topics: 6 / Replies: 102
AllTopicsReplies
Reply
RE: When will they arrive?

if you have a midea samsung or hitachi heat pumps i have done videos how to adjust your weather comp.hope they help

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Knowing a system will work before we commit to it

all seems resonable to me, i would use allh because the pi runs are long, burying the pipe use rauvitherm pipe in pipe, its very expensive but brillia...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Knowing a system will work before we commit to it

all heat pumps work at 5 degree delta t, so you can only squeeze 10kW down it. its q 68 in book 2 .

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Samsung Launches the EHS Mono HT Quiet – A High Temperature, Low Noise Heat Pump Ideal for Home and Building Renovations

Good points but if flow is restricted the pump is flat out and compressor slows, if there is spare pump capacity (very rare) what you say is true. the...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Samsung Launches the EHS Mono HT Quiet – A High Temperature, Low Noise Heat Pump Ideal for Home and Building Renovations

@editor dont worry to much about it, its just maths, if the delta t is 5 degrees and the flow rate is 30l/ min you are going to be able to deliver 10k...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Samsung Launches the EHS Mono HT Quiet – A High Temperature, Low Noise Heat Pump Ideal for Home and Building Renovations

@jeff no it doesn't stop working, it will fight you, its whole mission is to make a 5 degree delta t so it will slow the compressor therefore output k...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Samsung Launches the EHS Mono HT Quiet – A High Temperature, Low Noise Heat Pump Ideal for Home and Building Renovations

@chickenbig info is easy to get if you know where to look, i have it all. contact another supplier, they will send you everything. data books, leaflet...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Samsung Launches the EHS Mono HT Quiet – A High Temperature, Low Noise Heat Pump Ideal for Home and Building Renovations

@editor no its a 5 degree delta T, so you need about 40 l/min at flat out 14kW

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Samsung Launches the EHS Mono HT Quiet – A High Temperature, Low Noise Heat Pump Ideal for Home and Building Renovations

@kev-m thats not true , you dont measure it as a total box, you need to take into consideration the lumps and bumps and more importantly the dips. its...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Graham Hendra’s e-book is out on Kindle

Thanks Mars, for those who want it signed and cheaper you can also buy it direct from

3 years ago
Forum
Buy & Sell
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RE: Graham Hendra’s e-book is out on Kindle

Thanks Mars. i wrote the book for homeowners, it answers all the simple questions like, how big is a heat pump, can it go in the loft etc. the next bo...

3 years ago
Forum
Buy & Sell
Reply
RE: Will you be able to afford running your air source heat pump this winter?

@saz if its set up right it is the most effective way to run, if its set up badly it costs a fortune. i would get somoene in locally who knows what th...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
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