How quickly do your radiators get up to temperature with a heat pump (ASHP)?

I think reducing the hysteresis will make things worse. It’ll cause the pump to stop more often. I had this issue with my Honeywell remote thermostat and just as the pump was getting to an operating temperature if would turn off and have to restart again. 
A better approach is to reduce the weather curve and allow the system to take longer to reach the thermostat temperature. 
What thermostat do you have controlling your pump?

Not related but your tag at the bottom describes your pump as using R32 refrigerant but the pump model number is the same as mine which uses the older R410a. I think one of those things is incorrect. 

Fair enough, makes sense I think

Just the standard Daikin one

You caught me! Not sure why I did that, but it's gone now.

Hi heat pumpers,

@mrmojorisin04 @hydrosam please let me know if anyone objects to me moving this interesting thread into the public Smart Home category...

Have any of you noticed your fancy new heat pump badges? We thought this would help members to know who they’re speaking to and what sort of questions to ask based on their green tech.

@hydrosam you have allllll the badges thanks to your smart home!  

@Tim_OVO no problem with it being moved from here. I have seen a lot of issues on other forums of people trying to operate their heat pumps like boilers, for short periods at a high temperature. If this thread help informs someone it’s not the best approach then that will be a win. 

I’m afraid one of my badges has to be removed . I don’t have an energy storage battery, I just want one. If OVO want to help fund a battery to make my heat pump use greener electricity then I’d be very happy to take that badge back . 

Edit, just worked out thanks to @juliamc that the badge I thought was a battery was a smart meter so I keep all my badges. I still would like a battery to power my heat pump though… 

Completely agree, Hydrosam - I’m expecting this to be a popular search term over the next few years. 

@hydrosam 
The problem is, unless you go to the extremes of experimentation that you've had to go through, then the heat pump does end up working pretty much like a boiler. In my case, as I've described previously, it comes on two (maybe three) times a day with long periods in between where everything cools back down. The only real difference to. a boiler is that the radiators don't get anywhere near as hot, so it takes a lot longer.

Are you concerned at all that your approach may shorten the life of the pump with it being in pretty much constant operation?

But @mrmojorisin04 they’re designed to run continuously at a low temp.

Heat pumps are designed to run continuously as @juliamc says. The part the doesn’t do heat pumps good is multiple start/stops of the compressor, by this I mean multiple start/stops per hour which could be triggered by a poorly setup thermostat as mine was.

But you are quite right @mrmojorisin04 that I have been analysing my system more than most and installers simply don’t have the time to help owners optimise their setting, so if a thermostat can work then that’s the easy solution. The problem is most owners don’t know whether to, or how to, check whether the cycling is going on. And most installers won’t revisit to check  

I’m led to believe that on the continent this level of optimisation from the installer is common and systems are designed to operate with weather compensation mode enabled and run as efficiently as possible. (Caveat, this is anecdotal and something I’ve picked up from other forums) 

@hydrosam there is a great video just been posted by Heat Geek on YouTube which is aimed at users rather than installers, in short giving tips as to how to get the best out of your pump.

I have been experimenting with all day running, but the weather has been to warm of late to get much of a steer. One thing I have learned is to set the room thermostat up to a reasonably high temp, say 24°, and the curve down to the point that the radiator and room heat loss design run the show. A couple of weeks back I ran for two days at curve -2/40 to 25/25 but again the weather was good, and solar gain heated the house quite high (too high I would say).

we have a few cold days coming up so giving it another try.

Hoping to join you on March 2nd, but work keeps getting in the way. Doh!

Interesting, I’ve just set all my weather compensation numbers for eco Dan but cannot figure out how to set the room temp. When I go into schedule it’s blank and doesn’t let me add. I can only edit when it’s in room temp mode not compensation?any ideas anyone please. Cop is 3.5 currently but flow temp was 55 and only had heating on 4-9 pm at 18 degrees but costing £289 a month in winter. House not warm…. Maybe at 6 pm… but short lived.