This guy isn't a plumber, he's an engineering genius

You bring so much knowledge and craft to the trade a real asset to your local community.

What a nice world it would be if all heating engineers were as knowledgeable and dedicated as you.

This guy is a wizard, makes every plumber/ “heating engineer” I’ve ever hired look like complete clowns. Wish I could find tradesmen like this in my area 👌

Man what i wouldnt do to have done my apprenticeship with this guy.simply class

I’ve watched a hell of a lot of heating engineers on KZfaq but your videos are by far my favourite. Your not speaking or explaining at 100mph, your not showing off your fancy tools or shiny expensive van trying to get free sponsorship or plugging any brands for free crap, your english is perfect and you explain things in such a simple way it makes it really easy to understand. Great workmanship, outstanding work ethic and all round top bloke, if I ever see you in the pub your next pint is on me🍺 keep up the great work my friend 👍

Blown away by your integrity, knowledge and passion

Great upload Si, this is what differs us heating engineers from the run of the mill plumbers. Fault finding can be a bit of a headache and yes sometimes it's better to start from scratch. Keep producing great content pal 👍.

Great watch you’re obviously a very talented plumber/heating engineer that loves what you do, keep the great work up and keep the videos coming 👍👍

Great video, very informative! Nice to see someone taking the extra time to fully sort the issues. Thanks for sharing.

One of the best heating engineer/plumbers l have seen at work clearly knows his stuff.

It’s so nice seeing you thinking, and understanding what is going on. Good work👍👍

I am always impressed when watching you, my father is 3 decades your senior and you fault find and rectify just as brilliantly as he does.

Brilliant fault finding and resolution to the clients problem, excellent video as usual, thanks 👍

I don't even know or do DIY but it's a real pleasure watching you and your obvious interest and love for your job. Many thanks.

I love craftsmanship, and you demonstrate this time and again! Brilliant! 👏

Excellent fault finding skills! Keep up the good work.

I do enjoy your videos, and the standard of your pipework is top notch by the look of it - I bet with this channel you always have work queued up.

Great to see your work.. briliant diagnostics and another great video.

That reminds me of our central heating install 10 years ago. Old house with 8 flats, each with its own combi boiler. Owners decided they wanted to go green and install a central pellet boiler. Got a heating/cooling engineer to do all the planning and supervision. Held a tender with five bidders, all large plumbing/heating companies. Picked lowest bidder (for a reason - the second-lowest bidder admitted he was completely out of his comfort zone and couldn't be bothered and the third bidder's estimate was 25% higher than the lowest) and off we went. 100 kW pellet boiler, two 1500-litre tanks, four pumps for two main feeds (redundancy). Flow and return from the boiler were installed in abandoned chimney flues, which was fairly tricky and apparently because they couldn't get anything bigger through, one of the feeds serving three flats (80-100 m2 each) is 25 mm MLCP. We were promised compact transfer stations (basically a zone valve, an energy meter and a heat exchanger for DHW) in writing. What we actually got was all indivdual components screwed to the bathroom walls. A hydraulic separator, a bunch of gate valves, a circulation pump for the central heating and a DHW heat exchanger module with its own pump (the reason for the hydraulic separator). It looks an utter mess and we complained, getting excuse after excuse. After the third round I gave up. ("You can't get transfer stations for flow temperatures above 55 degrees C - found one for up to 90 degrees. "No, that's too small for the heat loss." Found one that went up to something like 24 kW whereas the original combi boilers were all 18 kW. "The main feeds are too small.") The main circulation pumps run at full power 24/7, 365 days a year because of the hydraulic separation. That makes them quite noisy and they consume 6000 kWh of electricity per year. Initially nothing worked because the main pumps were undersized. The contractor replaced them with Grundfos Magna 3s that didn't work either - the installer had to get a Grundfos engineer in because he couldn't set them up properly. DHW temperature fluctuated like crazy, and I'm talking 20°C swings. We complained, the installer claimed that was as good as it would get. "That's normal.". We got another plumber in (for other tasks) and asked him about the temperature swings and if he could compensate for them by installing a main thermostatic valve. His reply: "Well, I can install that for you but I won't, something's not right with that setup! Have a look at the manual and see if you can get it working as it should!". I grabbed the manual. These transfer stations measure cold water flow and temperature and CH flow rate and temperature and adjust the speed of the CH pump accordingly. I discovered that the minimum pump speed in the menu was set to 75%. What did that mean? At low DHW flow rates, like for showering or washing hands, the controls set the pump as low as possible but the CH flow rate was still way too high so water temperature went up, up, up, until the control went into emergency shutoff. The water got colder, colder, colder until the pump kicked back in, rinse and repeat. One flat had a crazy 30 l/min flow rate at the bath tap and around that the temperature was rock-solid, much below that and the pump couldn't modulate enough. Changing the minimum speed to 25% made the system work reasonably well from 6-7 l and up, which is still a bit much for showering but bearable. We told the installer about those settings and his reaction was priceless! "What, you need to change the settings on those??? The chap who sold me those never told me I had to do that!". We also had endless problems with leaks and ten years in I'd still describe the system as "sort of works". During the whole ordeal one of the owners passed away and then the pandemic came so plans to upgrade the system to something properly working haven't come into fruition yet.

Quality work mate. Brilliant in depth knowledge and fault finding.

This level of knowledge is super impressive.

Excellent job, your problem solving is absolutely stunning well done.

What a great discovery this amazing channel I wish I know just the 5 % that you know, not just doing a perfect job but also teaching us in the meantime and the job is done sooo fast unbelievable. Thank you so much for sharing your vast knowledge and for your time.

Thank you for taking the time to share your knowledge 🙏

Another cracking video. I bet your customer was delighted with the result. Well done 👍

You’re a heating wizard! Brilliant video 👍

I always learn something when watching your videos. Great work.

What a great video. Great problem solving skills and neat professionalism

I've watched a few of your videos and you are a brilliant plummer who knows a fast amount about his trade it's brilliant to watch

Excellent video. You know your 3 Tee rule which many ignore these days. Fault finding and problem prevention. Well done.

I have no clue what's going on I'm not a tradesman but I enjoyed watching this

Love seeing your confidence on this issue! A new subscriber from me! Watching from London! Thumbs up.

Nice job mate, well sorted.

Just amazing.Your knowledge is priceless, keep it up brother 👍🏻

What a mess - really well sorted.

Brilliant work, that was a great job.

Excellent methodical diagnostic & repair 👌

Another great video. Thanks.

I have only recently found your video's through my work partner (that we just went self employed together back in september) with the video of the how to lose £2000 in a week. I have to say your videos are so entertaining and its really refreshing to see someone so knowledgable about their trade and not just slap the boiler on the wall and get out of there. Great videos. Thank you mate :)

Impressed with all the work but sorting the boiler/bypass issues 👌👌👌👌👌👌 beautiful to watch mate

You know your stuff, great video

Excellent video. I have a noisy by-pass valve. Thanks for the explanation. I'll tell the engineer when they visit.

Excellent Workmanship As Always ❤️ Pleasure To Watch 💯 👏 👏

Thoroughly enjoyed your diagnosis process. I'm in the US (New Jersey) a lot of the hot water based systems get removed to add central a/c. The other reason is to eliminate the cost and complexity of up grading to more efficient hot water systems. The down side is like your corrected system the zoned hot water system is soo much more efficient and quiet. It's always a struggle with $. I have been in the HVAC business for 40 years and the best technicians under stand how to "control" the medium what ever it is, water, steam, air and humidity. Nice to see a true technician best sales person any company can have.

Well done at least you can learn about the various problems of the heating system.

Wow what a clever fella great video

Yes it's often quicker to simply start again than try to fix someone else's mess! At least then you can put your name to it with 100% confidence. Excellent work and problem-solving! 👏

This is a Different level, brilliant.

Fantastic,great work.

Beautiful work and extremely knowledgeable. Cant imagine how much you cost.

Hello Simon, Top video, would love to see more videos like this. Lot to learn from YOU. You are a TOP PLUMBER 👏🙌👍🤝 Regards from Liverpool

Awesome work!!

3 words for you, You are amazing! You have an academically sound mind. Knowing how to decipher an awkward situation like this requires high IQ. 👏 👏 👏.

Such a good plumber, I’m qualified to the same level as you. but i don’t have a clue however, im half your age so time to learn my apprenticeship was mainly on installing boilers but now im on breakdowns so hopefully i can learn alot and get to your level nothing better than knowing how everything works and bamboozling customers with science aha great video👌

Complete nightmare job that, must've taken a while just to identify those issues. Good work

Brilliant video mate 👍

Классный подход к работе! Молодец коллега!

Dood this is epic. I learned loads!

Great job, what a mess originally, shows what those with little knowledge can actually mess up. 👍

top video as always your an absolute genius 👏🏽

Fantastic info, great video

Impresive work! Wish all trades were like you bud

Very nicely sorted 👍👍👍👍

Great Vid as Normal . What a bag of nightmares 👍👍👍

That easybleed screw is so Cool.

with your fantastic expertise i wish you were in the colchester essex area to sort my electric heating boiler out

Great video, yes Y 3 port valve is not compatible with the underfloor heating zone, because it defaults to hot water bypass, so your HW will be the same as your boiler temp output when underfloor is on. If you have three wires at your room stats always use Heatmiser

Good video keep them coming 🤙

Good work👏

Good work. Nice job too. Good luck.

Amazing!

excellent video. good job well done

great job

Really enjoyed this video. It’s satisfying to see you figure it all out. Thanks for taking the time. You cover west london at all?

Good job very impressed

I've just watched this video again........what great work. The client's look stinking rich without a clue about building work.....I hope you charged them accordingly.

Excellent video 👍

Clever work.

Nice work and good to see your attention to detail , but I'm interested to know how much did this cost the clients, and they spend any money on insulating their home?

Nice neat pipework and installation. I installed a mains pressure twin coil solar cylinder at home with a thermostatically controlled and pumped hot water circuit. All works well but when working on the top coil only in winter there is a massive difference in temperature between the top and bottom of the cylinder as I time it only to heat water in morning and early evening to save running costs.

Your knowledge of the wiring is far far better than some Sparky's I've hired over the years....you are a serious credit to the plumbing industry..... unfortunately as you are a plumber/gas man......I am legally obligated to say electrians are the better trade 😉

Great job

Top job

Thank you

Great video, nightmare sort out that one. I always use the Honeywell bypass valves as they've never leaked, where as the type in your video I've come across a few times on customers systems where they've been leaking, probably because they aren't set correctly half the time.

Well done👍

Great video, just subscribed

Nice job man

This video has no relevance to me at all. But, I can’t help but watch, like many of your other videos. It’s like watching an artist at work, almost brings a tear to my eye. Normally, I find tradespeople so frustrating - condescending, unreliable, and not especially competent. You, sir, are an absolute rarity! Bravo!

Great video 👍

I’m not a plumber, heating engineer or tradesman of any description but need a new central heating system so have been researching on YT. Had no idea heating could be so fascinating. What’s really clear though from watching quite a few of your videos is that there seem to be a lot of bodged and potentially dangerous installations out there. Was wanting to have a combi boiler installed to replace an old conventional system but am being told this is not really practical for a variety of reasons. Being retired and with fixed income it’s really worrying that I have no way of knowing whether the advice I’m being given is correct or whether the install will be efficient. Shame that everyone doesn’t work to your standards and have your integrity.

Great video

Great video! Can I ask where you gained your knowledge to calculate flow rates, pipe sizing etc? Was it just over time or have you taken a course similar to the heat geek one? Thanks

Very clever chap

Just watching your videos, I so wish you were available to me close to Edinburgh to do a change from a BoilerMate 2000 20 year old system to a new Combi boiler...

Hi. I must say i am really impressed with the level of your fault finding skills and knowledge. I am a plumber but still far from the level you are. I am planning to do a gas course as well. But i really wanted to ask you, how or what did you do to transition from a regular plumber/gas engineer to the genius you are at the moment. If you can give any tips how one can improve that much(reading material,courses etc). I wish you all the best. I always watch your videos and wish i was as good. Thank you for sharing you great work!

That copperwork looked beautiful and almost a shame to cover in insulation! :)

Nice fix

GENIUS !