I have a rather old boiler (Potterton Performa 30HE) and the heating and water temperature controls don't include numbers – see photo. I have read a lot about how these temperatures can be safely reduced to save money but as there aren't any numbers on the dials I have no clue how far down I can turn them! Any advice?
Currently when I turn on the heating or have a shower the boiler goes full max and hits 80 (see photo) – by turning down the temperature dials will this then only hit 70 or 60? Is either safe?
And yes, I know, a very old boiler which won't be very efficient but it is working fine and has been serviced so no plans on getting a new one!
Thanks!","comment":[{"@type":"Comment","@id":"https://www.hotukdeals.com/comments/permalink/51321985","author":{"@type":"Person","name":"AndyRoyd"},"datePublished":"2023-10-31T21:23:45.000Z","text":"Lower / raise as much as necessary to provide the comfort / performance you want / prefer.
No numbers marked as the output result is relative not absolute.
If you must have numbers, mark your own."},{"@type":"Comment","@id":"https://www.hotukdeals.com/comments/permalink/51340098","author":{"@type":"Person","name":"dcb01"},"datePublished":"2023-11-02T22:08:57.000Z","text":"Why do you keep mentioning it’s “a very old boiler”?
No it’s not!
It’s a high efficiency condensate boiler that your not likely to notice any major savings if you swapped for a shiny new A++++++ one.
If it’s that “Company B…G….” telling you you need a new one, all I will say as a ex employee is the are incentivised/Forced to “Promote “ "},{"@type":"Comment","@id":"https://www.hotukdeals.com/comments/permalink/51326175","author":{"@type":"Person","name":"uni"},"datePublished":"2023-11-01T12:27:43.000Z","text":"when you get your annual service, ask the engineer to balance the rads and set everything the way you want it, instead of guessing and potentially breaking your boiler by changing stuff you don't know"},{"@type":"Comment","@id":"https://www.hotukdeals.com/comments/permalink/51320134","author":{"@type":"Person","name":"martynhardacre"},"datePublished":"2023-10-31T17:15:24.000Z","text":"If your water gets heated on demand then you can have it at wherever temperature you like. Think it's only an issue if it sits in a tank as there can be a chance of legionella with water standing and not being heated to a high enough temperature. Mine is at 50 degrees. On the boiler if it's your flow temperature the general advice is to set it to 60 degrees to get the best results 🏻"},{"@type":"Comment","@id":"https://www.hotukdeals.com/comments/permalink/51320167","author":{"@type":"Person","name":"TristanDeCoonha"},"datePublished":"2023-10-31T17:20:17.000Z","text":"If it is an instant feed then you only need the water temp as high your needs. For a bath/shower (assuming tap fed) then 40 is enough.
If using to clean grease off without chemicals, then crank it up.
You don't need to worry about keeping it at 60 to avoid Legionnaires disease unless you are holding the water in a storage tank. The internal rank is emptied often enough to avoid that.
Can you afford to wait a short time before you receive hot water at the tap? If so, then turn off the constant option, so you are left with on demand. This saves a bit of gas.
How hot do you want your home? The water coming out of the boiler for the heating needs to be higher than your preferred temp so that it can lose heat into the home. That is for you to play with"},{"@type":"Comment","@id":"https://www.hotukdeals.com/comments/permalink/51348824","author":{"@type":"Person","name":"themachman"},"datePublished":"2023-11-03T22:39:53.000Z","text":"Instead of trying to find the exact temperature just turn the dials to suit your needs
I always turn the water down when I have a shower then crank it up for the dishes
The one for radiators i have on full pelt, I know some people get the sweet spot for the condenser boiler to be more efficient, but I found the place took ages to warm up doing it that way."}],"commentCount":16,"interactionStatistic":3,"articleSection":"Misc"}