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Plumbing

Electric water heater - hot feed to appliances?

Anonymous user 03/03/2024 - 3.33 PM

My house just has a small electric water heater. Refitting the kitchen, I've discovered the appliances are fed from the hot supply. Which struck me as odd considering. Presumably more expensive. Now I'm wondering whether this was to maintain tap water temp when appliances are in use. As if they're fed from the cold, that would reduce flow and so increase the temp from the heater? Does that sound correct? Should I switch appliances back to cold feed?

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2 Answers

Anonymous user

How do you know they’re hot and cold pipes? Appliances are normally attached to the cold feed. A plumber may have used a red isolation valve on the cold feed giving the illusion you’re connected to the hot. I’m pretty confident that your appliances would struggle to work if hooked up to the hot feed. Anyway, perhaps a plumber / heating engineer needs to answer this one. Regards, Carl.
Answered16 October 2020
2

CSR Plumbing Services

Rating: 5 out of 5
Guildford
Appliances always used to be connected to both hot and cold feeds. Manufacturers then moved away from this and just ran them from the cold feed. The trouble with using the hot feed would be that by the time the hot water reached the appliance the appliance was already full of water. There is the chance if it was using the hot only that the water could get too hot. If the pipes are accessable then it should be possible to work out whether it is the hot or cold supply.
Answered9 November 2020
0