Last seen: Nov 29, 2025
@ashp-bobba I'm not a heating engineer, but with a heat loss of 2.5kw at minus whatever, is there any heat pump that can modulated low enough ...
@cbrenewable What's the heat output each day for the last few days, and the input. My COP is 6 and over at the minute. The big rads not gettin...
@cbrenewable Hi, the graphs from Mel pump would be good. Can you draw your system, have you got a low loss header? or are you directly piped into ...
@sandman1600 you need to measure whats going on really before you make loads of changes. If you can measure the temp of the flow and return to and ...
the reason why cop is bad is the delta t's on the primary circuit are small, so its not giving out much energy by the mitshi calculations. nobody kno...
Has anyone been to check what is going on with the secondary side of the system with the UFH? I’ve not read all the posts recently. The minimum modula...
Yeah, big balance isn’t it. Big enough to heat commonly cold days, but not so big ruins more typical temps. im not sure where in the country the unit ...
I’ve circle your compressor output. It’s just going from low to minimum output to off. And then as we thought, off all day. But it’s warm today, but m...
@sandman1600 it’s tricky. Looking at the graphs: it’s not ideal. It’s on/ off all the time as it can’t modulate lower. Personally, I’d not be hap...
@gary mine was “designed” to 45, bit system can’t get above 36. That bit was nonsense. from looking at your graphs of one day: you’ve got loads of ...
@gary I get where you’re coming from. But I don’t think you’re undersized . You’re trying to cram in all the heat your house needs into certain peri...
Hi, I'm saying this from my experience, not as a heating expert: Your compressor is turned off for too long periods. You may think the UFH is at ...
Latest Posts
-
RE: Electricity price predictions
Also the red crosses on the roundabouts... Unfortu...
By Batpred , 1 hour ago
-
RE: Hitachi Yutaki SCombi Heat Pump - Owners
@sim0n0 Here's a reply to help you out. As a owner ...
By trebor12345 , 1 hour ago
-
RE: Help me keep the faith with my air source heat pump installation
The engineer came yesterday and as the rooms were ok te...
By AdamK , 1 hour ago
-
RE: Replacing my 18 month old Hitachi Yutaki ASHP
@jamespa Can I check something that I done some weeks a...
By trebor12345 , 3 hours ago
-
RE: A2A vs A2W: Which Heat Pump Would You Pick?
The problem I see with A2A (and I'm interested if there...
By Temperature_Gradient , 3 hours ago
-
RE: British Gas vs Octopus Energy vs Heat Geek vs EDF vs Aira vs OVO vs EON.Next vs Boxt
@temperature_gradient I specifically explained to my po...
By Toodles , 4 hours ago
-
RE: Grant Aerona Short Cycling
@damonc I was refering to the 'standard' energy sticker...
By MikeFl , 7 hours ago
-
RE: Havenwise App Help & Forum Support – Get the Most from Your Heat Pump
@hcas where do I find Havenwise Support? On...
By Morgan , 8 hours ago
-
RE: Should Our Water Circulation Pump Be Configured to Run All The Time?
We recently (Aug 25) had a Grant Aeorana 3 installed un...
By GA3_USR , 12 hours ago
-
RE: Grant Aerona circulation/system pump staying on
My AERONA 3 circulation pump runs constantly whatever t...
By damonc , 21 hours ago
-
RE: Configuring third party dongle for Ecodan local control
Thanks, @sheriff-fatman. Happy for you to search any po...
By Majordennisbloodnok , 23 hours ago
-
Thanks, @cathoderay. I was aware of some changes to ...
By Majordennisbloodnok , 24 hours ago
-
RE: Trying to understand my Nibe F1245
@greenlight Many thanks for the information, it's set m...
By Chris12 , 1 day ago
-
This is what I answered, I really have no hope: "......
By Batpred , 2 days ago
-
-
RE: Octopus Cosy Heat Pump Owners & Discussion Thread
@andrewj oh yes they offer Daikin 8kW, they tried to fo...
By AgentGeorge , 2 days ago
-
RE: Solis S6-EH1P8K-L-PLUS – Why I Chose It and What I’ve Learned So Far
@majordennisbloodnok Good point! Just in case anyone re...
By Batpred , 2 days ago
-
RE: Benefits of an extra horizontal loop for GSHP
A correct sized collector is all you need. Saying this,...
By greenlight , 2 days ago
-
