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Seems obvious it's circulation: Boiler stat is ok, boiler doesn't kettle and the pipes at the pump are too hot to hold so boiler is neither too hot or not hot enough. If the plumber used the pump valves to change the pump and they operated alright it's not the gate stuck in a semi closed...

I understand now, I thought when writing my you were in the third person. The Profile, which I thought you were writing about, has the date of casting on the hex which would give the age.

Why?

I'll let others give their opinion of WHICH, Worcester etc as I work for Vokera. The post is whether a second hand boiler with no warranty is a good choice to save a grand and looking at things that way £700 for 5 years warranty is £140 a year whereas BG cover is likely to be £360 per annum on...

Put it this way, for £700 inc VAT you can put in a Vokera Vibe Max 26C, large bore stainless heat exchanger, larger that the Viessmann, with retarder but no restrictive elbows and constrictions. It’ll modulate to just below 3kW, has dual temp weather comp, OpenTherm, three preheats, wi-fi ready...

Q1: Is risk cost >£1000 A: Don't do it Q2: Is risk vlaue <£1000 A: Do it

CBW is correct, the tube should be installed level as the inner flue tube has an incline falling back to the boiler built in. If there's ever a reason to get a ladder up the side of the property try to lift the terminal end upwards a little, even if it means chipping out a bit of brickwork. The...

Look in a radiator catalogue of a style similar to your own. Do you need it to be that accurate?

Your immersion heater might be switched by the heat pump control or it might be switched separately, you need to find out which. Follow the cable back from the immersion heater or better, ring the installer or his electrician. If the immersion heater is controlled by the heat pump unlock the...

Go to a bathroom shop, not B&Q or Wickes.

https://uk.trustpilot.com/ Type the name of the company you want to check into the search bar.

I work for Vokera and keep an eye on feedback to the review site. If you ask me if it reflects reality I'd have to write, spasmodically. These are customer reviews, some manufacturers ask their installers to review on them. Some manufacturers ask the end user to place a review if they're...

Trust pilot review scores Intergas 4.3 Baxi 4.4 Viessmann 4.1 Ideal 4.8 Vokera 4.2 Vaillant 4.5 Worcester 4.6 Rinnai 0.0

Thermal imaging camera? How often is occasionally?

Part L Building Regs; replacing a fixed appliance with one with an efficiency less than the one being removed is contrary to regas. Should be HP or a better efficiency appliance than the HP.

Is this your 'stay-in' house for say 20 years or a stepping stone? If the former, when you choose an installer whose judgement you trust ask how much. He's there on the job, say it adds £350, over 20 years you've lost nothing and have started from a known good position rather than a maybe. Of...

Why would there be dirty water in a boiler replacement, the system should be thoroughly cleaned. Get another heating engineer to survey regarding boiler and pump.

My preference is the opposite, an installation will have one max flow rate for the design so a look along flow rate axis I’ll show available residual head.

People researching what boiler to purchase and who have 25 minutes to waste might benefit from listening to the recording of a Mr. Know-It-All's call in to Vokera radio

Vaillant invented the combi, Vokera, or the guy that started it 40 years ago bought them into the UK before he got his own designed and started the company, all the others came later.