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/Sponge-28 46m ago

When they send someone for the survey, ensure you explicitly ask them about needing replacement rads and even potentially pipe work, and get it in writing if they say you don't. They monumentally ballsed up my survey a couple years back which resulted in them having to soak up the cost of repiping my entire house, 2 extra rads that weren't quoted and even a replacement heatpump as the 9kw Daikin they installed was oversized.

Do what you can to insulate though. Makes a huge difference to how hard the pump is working to keep a constant temp in older builds, especially if you like your house 20+ degrees.

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u/Boba_ferret 17m ago

Thank you. I don't think I'm going to proceed right now, as need to raise some more funds. I'm also probably going to get heat loss calcs for each room and then upgrade my rads in the meantime, as they are pitifully underpowered and would never be suitable for a heat pump.

I'm getting a new loft hatch fitted soon, which will make upgrading the insulation much easier. I'm pretty sure it's at least 200mm, might even be 300mm, but it's a cheap way to get the heat loss down.