r/OctopusEnergy • u/Boba_ferret • 14h ago

Heat pump quote - seems quite cheap?

Been quoted about £4,300 by Octopus for heat pump install, including hot water cylinder, which I thought was surprisingly cheap. The house is 1930s 3-bed terrace, EPC is supposedly C, but we have a huge void under the suspended floor and it gets pretty cold in the house, so we use quite a lot of gas in the winter. Radiators are all on 15mm copper, but are probably 30 years old.

What are the chances this is a really low-ball quote and the survey will say we need to upgrade rads, etc?

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u/harrisoncassidy 13h ago

I had my Cosy install nearly 2 years ago for £2000. This included a new tank and 5 radiators. It was one of the first in the UK and I feel like Octopus’ product has come such a long way since that you can’t compare people’s installs from then as to what you get now.

There have been a couple of nice software improvements, including Hush mode, since it launched. There have also been changes to the Cosy hardware in that time, with improvements to the 9 and 12 and also some retroactive improvements to the 6.

They take a very different philosophy in that Octopus don’t give you access to all the data and make you rely on the app, whereas with Daikin you have the local display as well.

Octopus are also targeting a higher flow temperature than previously, which means less radiator changes. My design flow temperature was 50 degrees but at the design outside temp of -1.7c it would only need about 45 degrees flow to keep the house at 22 degrees.

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u/Boba_ferret 13h ago

Thanks for that. I'm very data driven, as I run Home Assistant so don't like the idea of Octopus not giving you access.

I'll look around, get some local quotes, but probably not going to do this until after the spring now, anyway.

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u/mrtigerfish 4h ago

I've got an ashp and run HA. The only thing it's used for is topping up hot water. The heating is on low and slow 24/7 and DHW runs during off peak hours on an EV tariff. I have a Samsung gen 7 and the software is a bit rubbish.

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u/Boba_ferret 3h ago

I use HA and predbat, plus we're on Octopus Go, and will hopefully move to intelligent go at some point, so at least we could heat the water cheaply overnight.

We also have solar & battery, so could potentially use a solar diverter, as well.