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If the installer is registered with their employer, does that mean the installer is CORGI registered?

If you're referring to me as the DIYer, I'm not designing my system based on what Sanj is saying. To clarify, I took the opportunity to change my radiators while redecorating as the rads were leaking and rusty. I used the radcalcs.com website (recommended on this site) to help determine the...

So to gain the benefits of weather compensation, I really need to have oversized rads in each room to enable lower flow temps thus keeping the boiler in condensing mode for longer? I have been decorating my house and have changed 3 of the rads (in 3 rooms), but this was before I even considered...

For the other 18 hours, is your boiler using gas to keep it as the reduced temp? I worked out my gas bill, and for the last 2 years i have paid approx £510 each year. My electricity bill is about £300 per year. They're both with british gas with dual fuel discount. I recently looked on...

What kind of things can the controller do that a normal one can't? Do you run your boiler 24 hours? Thanks.

According to the Corgi website, the 6 year warranty covers the homeowner if the installer can't fix it. I would like to read the small print and see what it covers, and more importantly, what it doesn't cover. Here's the link...

The Corgi registered installer I found on the Viessmann website has been fitting them for about 2 years now and is Viessmann trained, so the boiler would be guaranteed for 5 years. The 2 other heating engineers that work with him have been on the training course at Viessmann just this month...

I have a washing line but it's not so good in this weather! I am considering a de-humidifier though to help with the moisture.

Hi, I'm considering having the Viessmann Vitodens-W combi boiler installed but wanted to know if anyone has seen one or installed one, since they're very new to the market. Is the weather compensation option really worth it (an extra £150 in my case)? With this option I heard that...

Hello - i'm looking to have a new combi boiler fitted and the choice of boiler is currently down to Vaillant or Worcester Bosch. Both are highly recommended on this forum, and my parents and sister both have Vaillant combi boilers fitted (non-condensing), without any problems. I had an...