How do I know if the power flush was actually done?

[Belleende]

At the start of lockdown our boiler went kapput. We had it replaced and had a power flush done. We had to be out of the house all day, as we are fully open plan. I did think at the time that we had no way of knowing if the flush happened.

Now we are using the heating, and the rads upstairs are hot on the bottom and cold at the top which I think means they need bleeding. It got me thinking, surely the a recent powerflush would mean that there should be no need to bleed. @pigletjohn, do you have any sage advice?

Hopefully the experts will be along shortly, we had a powerflush when our boiler was replaced and I thought it was just to shift dirt out of the system. They did go round and bleed the radiators afterwards though.

We have a magnacare thing now that gets emptied annually when the boiler is services.

hot at the bottom, cold at the top, means they need bleeding.

Does your boiler have a pressure gauge?

If so, you will need to look up how to refill it.

The powerflush is to wash dirt out.

Yes, boiler has pressure gauge and it is just a flick of a switch to refill. The boiler does gurgle periodically.

I know the flush washes dirt out (and it was manky), I just thought that the process would almost require the rads to be bled. Or I could just be being suspicious. He was a very grumpy boiler man

It's highly likely that as you had all that work done there was air in the system which has worked its way through. Just bleed the radiators....it only takes a few minutes.

We had our system power flushed when we had a new boiler installed. It took a long time to do and then they started up the system and checked and bled the radiators. They specifically said they needed access to all the radiators. In our case they did the boiler installation one day and the power flush either the day before or the day after (I can't remember which) they said sometimes it can take hours and hours.

Yeah, I don't think the rads were accessed. There was no sign he had been in any of the bedrooms. Hmmm. Is there anyway to find out if a flush has been done?

Didn't have our system power flushed as was advised to get the magnacare instead. Could tell it had been done. No more funny noises coming from the central heating system, boiler much quieter & it stopped breaking down.

Had initially been advised to do power flush but q narrow pipes so sensible plumber said too risky as pipes might get blocked as the silt moved through the system... any clues op?

Our radiators work much better after the power flush, although some of that will be down to the new boiler. It seems to me (and I am an engineer (insert smug emoji)) that there is definitely a better flow through them. They had gone 20 years without any attention though. We’re complaining about being too hot rather than huddling under blankets.

If they’re a reputable company they will have needed Environmental Health documents about how they disposed of the silt. Ours did. Ask for those along with the receipt for your payment.