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ChandyKris
@chandykris
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Joined: Jul 27, 2024
Last seen: Dec 26, 2025
Profile Activity
Topics: 5 / Replies: 99
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RE: Aira Heat Pump: Stylish Scandinavian Heating

@vsmith1 We switched from an EV tariff to cosy tariff after the heat pump installation. We run hot water twice a day during the cheap period, one hour...

10 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Aira Heat Pump: Stylish Scandinavian Heating

@vsmith1 I too took saw that today. Pretty chuffed with heating CoP of 4.2 and hot water CoP of 3. Especially, when the weather was particularly cold.

10 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Agile: average import cost vs other tariffs?

@broadsman That's a good shout. I can't see the flow data, but can see input power and delivered heat by hour. Also, can track input electricity on th...

11 months ago
Forum
Electricity, Tariffs, Monitoring & Providers
Reply
RE: Agile: average import cost vs other tariffs?

Really interesting thread, thanks for the insights everyone. We recently had an Aira heat pump installed, and straightaway I realised that we need t...

11 months ago
Forum
Electricity, Tariffs, Monitoring & Providers
Reply
RE: Octopus design temperatures confusion

@andrewj Earlier with the gas boiler and Tado TRVs controlling the temperature, I used to think 18 is the right temperature. As otherwise the room use...

11 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Aira Heat Pump: Stylish Scandinavian Heating

@mikeh It's running on an off peak schedule now. To be honest, I don't see a drop in COP. There was only 10 minutes of hot water left yesterday night,...

11 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Aira Heat Pump: Stylish Scandinavian Heating

@mikeh I thought so too, the efficiency can't be that bad if you run the hot water once at night. Yes, maybe when you have visitors and during Christm...

11 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Just one room not reaching desired temperature

@jamespa Few others on the forum mentioned about the 18 degrees too. But, the design engineer didn't budge. I wonder whether that's to keep the existi...

11 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Aira Heat Pump: Stylish Scandinavian Heating

@mikeh Watched your latest YouTube video today. Thanks for the good work. In the video you talk about the hot water schedule during off-peak hours. ...

11 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Just one room not reaching desired temperature

@transparent As it was a retrofit, changing 10 mm microbore to bigger pipes was out of question. Changing pipework for a three storey house would have...

11 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Just one room not reaching desired temperature

Thanks @judith. Definitely, the upstairs bedrooms get a lot warmer, they are all exceeding 22 degrees and staying at that temperature steadily. I have...

11 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Just one room not reaching desired temperature

Thanks @jamespa for the pointers. There are TRVs on all the rads, but they all are fully open. We have 10 mm microbore to the radiators. Let me check ...

11 months ago
Forum
Air Source Heat Pumps (ASHPs)
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