Worcester Bosch 4000 Boiler Review: Plumbing's Verdict 

Hey Mandy, glad you found it useful - thanks for watching!

Great to hear from you all the way from Aurora Colarado - thanks so much for the feedback! Are you looking at purchasing the Worcester Bosch 4000?

@@Heatable You’re welcome ! Yes I’m purchasing a Worchester 4000 today. I recently signed up for abc program at Bosch thermotechnolgy from Bosch. I’m looking to start offering this product instead on navien, rheem, or others. Recently attended specific training on this product and will have more training trough the year. You guys are awesome! Keep the good work going.

@@pacificairsystems9683 It's definitely worth having the training if you're looking at potentially offering it to customers. Also, don't forget to subscribe if you like the videos!

Thanks Allen, it was great to hear your thoughts on the 4000!

Cheers Rodger. For your sake, we hope it doesn't kick the bucket too soon.

Hey, the Bosch Easy Control thermostat requires a direct hard-wire connection to the boiler when it's mounted on the wall. However, if you're using the Easy Control on its stand, it doesn't need to be hard-wired. This is because the stand includes a specially designed transformer built into the plug, allowing you to simply plug it into a standard electrical outlet for power.

It's definitely one of the best features, the 4000 could be a good option if your current 10KW is too much!

I have the 4000 15kw System boiler and it modulates down to 1.9kw. When it's about 10C outside that's what it ticks over at.

OK if you live in a one room flat, but 3Kw won't be of any use if you live in a 3 bedroomed house.

@@Gary-Seven-and-Isis-in-1968 of course it will….on milder days you can keep a 4 bedroom house at 21degrees with 3kw. It’ll take more to get it to 21 but once there all you need is to replace the heat lost. At -2 outside my house needs about 7kw to maintain 21degrees.

Hey, thanks for the comment! How come you waited 4 years to get a new one?

@@Heatable it took me that long to save for one along with installation costs. If my mortgage hadn't doubled then it would have been sorted a few years ago

Hi Dev, sorry to hear you're dealing with this. You're correct, your flue shouldn't be leaking. We recommend you get in touch with a reputable local installer for a second opinion to see if they can find the issue.

@@Heatable thanks for your quick reply on this

@@devbhari5480 Hope you get it sorted!

Hi heatable no it’s got worse as British Gas are now insisting a plume kit be fitted. Worcester we’re going to send a senior technician but based on the advice of a plume kit from British Gas have confirmed a plume kit is the only way forward. I’ve asked Worcester directly should the flue leak and they will not answer the question. Really bad from both

Hey Kate, what control do you have?

Hey Rob, thanks for your comment. Range rating sets the upper limit for your boiler, ensuring it doesn't operate beyond what's needed for your home, which can improve efficiency and reduce wear. While modulation adjusts the boiler's output within that set range based on real-time demand, range rating ensures the boiler's top-end is appropriate for the property. Regarding cycling, frequent on-and-off actions can wear out components faster and can be less efficient than steady operation. While 6kW at 50% duty does provide the same average output as 3kW, the continuous operation at 3kW offers more consistent heating and can be more efficient.

@@Heatable Many thanks. It sounds like what we're doing with the range rating/max output setting is giving the boiler a clue as to what is likely to be needed so it doesn't start out full blast unnecessarily. As a computer programmer I can imagine automating this by giving the boiler a memory and having it learn how the CH water temperature responds and remembering for next time. But that's because I like to over-complicate things!

Hi Daz, appreciate the helpful feedback. In future videos, we'll try to be more accurate when it comes to fact-checking.

@@Heatable keep up the good work tho :)

Hi Christopher, range-rating your 30kW boiler means adjusting its maximum output to suit your home's specific heating demands, which can result in energy savings by preventing the production of excess heat. A lower setting will cause the boiler to heat up more slowly, and while it does affect gas consumption, it won't save on electricity unless you're dealing with an electric boiler or an integral electric pump. For your semi-detached 3-bedroom house with a living room, kitchen, conservatory, and 9 double radiators, a rough initial estimate for range rating could be based on the guideline of approximately 1.5kW per radiator, which would mean a starting point around 13.5kW or 45% of your boiler's capacity. However, the ideal percentage for range rating is really determined by the house's specific heat loss, which can only be accurately gauged with a professional assessment considering factors like insulation quality, window types, and radiator sizes. The current setting of 60% range rating and 60°C temperature might be fine for the current weather, but as temperatures drop, you'll likely need to increase both the range rating and the boiler temperature to maintain comfort. It's not very efficient to just turn up the CH temperature with a lower range rating; instead, it's better to find the right balance between range rating and flow temperature. The boiler should operate at the lowest possible temperature while still providing comfort, which not only saves energy but also maintains the efficiency of your condensing boiler. When adjusting your boiler, observe how well your home maintains heat at the lowest setting that is still comfortable. Incrementally increase the range rating if necessary during colder weather. Also, make sure to keep the return temperature substantially lower than the flow temperature to confirm the boiler is running efficiently.

@Heatable thanks for the reply. Last question when looking at the range rating the highest percentage it goes up to is up to 80%. Is this correct?

@@sidboi19 This depends on which boiler you have?

@@Heatable it's the worcester 4000 30kw

@@sidboi19 Yes the highest rate range for this boiler would be 80%!

Ahbal 😂

@@adelfaragalla3621 i need it can someone help me to get it

Installing a boiler safely involves more than just connecting a few pipes - gas safe exists for a reason!

I have a 25 KW and the hot water is really fast at heating and very hot - better than the Baxi duo-tech - I am here just to find out how to turn the damn thing down because the radiators are too hot too and the boiler makes a noise like a plane taking off - I've already adjusted the setting to 50 for heating and 53 for water

@@DrBiohazard Did you figure out how to stop the excessive noise? We've just had ours installed and its far too loud in my opinion.

Yeh, I got rid of some of the noises but it still sounds like a vacuum cleaner, especially when the heating stops or a tap is turned off - if you go to the service menu by pressing the rad and tap at the same time then go to settings>Heating>Max heat output - the % output can be lowered if you only have a few radiators - hope this helps@@orpheusjones7313

My parents have an electric shower, so the 25kW would be ideal for them as they only need hot water for hand and dish washing.

We’ll work better on our facial expressions for next time

My Worcester Bosch 30 CDI is causing me financial hardship, no question! Heating engineer due on Monday 9.01.23, maybe he should become a lodger! ,

we'll tell him to look more interested next time 😂