Just resat my ACS and passed wish I found these videos earlier, you explain stuff so well and you make the calculations so clear, better than the guy who took my reassessment 👍

watching the recordings more and more you start to arrange everything in one piece, thank you

.. and I’ve just watched this one again too :) Step by step calculations with great explanations. Thanks Derek Asian Jon. Training.

Thank you Mr Derek for simplifying and explaining God bless you

Thanks Derek wish ive seen ur video long time ago make it so clear explanation as if am in classroom don't know hw mach to thank u god bless u big man.

Nice ventilation video Derek, always loads of valuable information to learn, Great. 👍👍 Tomkat gas trainee. 😁👍

I am a student and watch your video many times , which I found Best explaining materials available ! Best of Best

Great training on ventilation make it more understandable thanks Derek

Really amazing easy to understand

Brilliant video Derek. Hoping my portfolio in up to scratch and homework booklet. I'm already studying prepared for future assessments and by watching your videos will really give us confidence when out in the field. ☺

Another great video and well explained. 👍🏽👍🏽😊

Great ... well explained... keep it up...

Very good clear explanation for all gas operatives involved in installation and servicing of flueless gas heaters and ACS training.

Really struggled with the space heaters from the books only just watch this video and you'll understand it well explained by Derek 👍🏻

This vid has helped me a lot, Thanks Derek 👌🏽👌🏽

You are amazing mate. Thanks for the video

Ray Hurrell is brilliant and helpful

Fantastic video. Thanks Derek. Polish Peter - trainee at TomKat😀

U r the best Derek

A great video. Very well explained. Much better than the regulations book 😉. Mo

Well explained. Awesome. Thanks Derek. Asian Jon. Training

Excellent video’s

top video, thanks Derek . Ion Vitiu (Nick)

Excellent you are the best 🌹🌹👍👍

This has been a great help with flueless calculations awesome job! Thank you.

A great video Derek & well explained, I had to go back and look at the window spelling which you spelt wrong, I didn't spot it until you said.. 😂😂. Great video.. 👍👍😀

excellent video clearly explained. Andy Thomas Gas Trainee

SIMPLY THE BEST!!!

Great info .just retaking ACS being told if all appliances in room are open flue then you can take adventatiious air off kw .but if a open Flue and flueless appliance in the room you can't use the advententatious air .

Thanks Derek..

Got my initial assessment next week and practical in a further two weeks. thanks for all your Videos.

Thanks so much Derek Benny

Thanks again great video 👍

Got exams to sit next wee. Great refresher. Thanks

You make it so easy

Infirmative Faisal

Very helpful

Fantastic lecture, If it was up to me I would half your hours and double your money. I realise why I have ALWAYS refused to fit a Flueless space heater, too complicated! One mistake, if you are registered and you are in BIG trouble. This is why British Gas refuse to have anything to do with Flueless space heaters, dont blame em!

Thank you Derek , Mohamed Hassan

Question. What is a space heater conforming to BS EN 449: 2002 and 1A

Massive thank you 👍👍

👌😊

Bloody hell thats a low ceiling !! :0

Watched part 1 now watching part 2 loving it.. soon to be a Gas Engineer building my portfolio

Just watched 👍. Aaron trainee 😁

Thank you

👍👍

like it

Thank you so much, I just passed my as.

Why my training centre hasnt taught like this?? Now i have paws ventilation test test tomorrow 😅😅

ACS Multiple choice. Which of these is required for a room with a cooker less than 5 m3 ? (A ) W I D O W (B) W I D N O W (C) W I N D O W or (D) DEREK Answer = (D) DEREK Because he continues to be a breath of fresh air for the Gas Industry.

I would like to thank you for your efforts to do this and we are great full to have you . God bless you. Don't forget. For What a man sows that will he also real.

Thanks

Hi Mr Derek thank you. Required ventilation for a single burner hot plate of 5 kw in a room of 8 m3? Ventilation is nil Or is it 50 cm2? I think the answer is nil. Please correct me if I am wrong. Thanks again

Great video but where 90 comes from on flueless space heater When you calculate 45 ×90 thanks for your help

👍 Shane Hunt

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Tomkat👍🏻

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Callum Collins - TomKat Training

Jon-Paul Ward

Chris Taylor

steve ward

What is a open flue water heater is it same calculator as open flue boiler

James O’Brien

Marc Crowther watched

're watched 😁 Aaron j trainee

Raza watched 22/04/2022

Dan R

Marcin Masalski

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Thank you

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Raza watched 01/03/2022

Marcin Masalski

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