TWO PIPES ONE VENT? Electricians Q&A - Ventilation and extractor fan ducting

Рет қаралды 20,834

2 жыл бұрын

Installing ducting for MVHR and MEV systems can be a challenge. A trade-off between balance airflow, system efficiency, noise and ducting size.
In this video, we explore why a parallel run of semi rigid mev ducting was used in our recent review of the envirovent mev range.
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❌ This content on this channel is for electrical professionals.❌ ==================================
📹 Presented by
Joe Robinson - Technical Editor
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#efixx #mev #ventilation

Пікірлер: 19

@edc1569 2 жыл бұрын

Decent mechanical ventilation is so often overlooked in UK homes, even though we live in a climate where we can't have the windows open 6 months of the year. I've retrofitted MVHR into all my homes, even the more drafty ones, and its just nice to always have a fresh atmosphere, the option to keep out pollens and never to have any concern over damp.

@efixx 2 жыл бұрын

Couldn't agree more, surprising we don't have more problems really.

@JimWhitaker 2 жыл бұрын

In my home, there is always a couple of windows open to a greater or lesser extent. I suspect that the current fad for extraction systems will be seen as a poor decision. Ask New Zealand about ill-thought government interventions in construction.

@edc1569 2 жыл бұрын

@@JimWhitaker I put in decent MVHR units, they are cheap on eBay as commercial installers often spec them wrong and have to get rid of the wrong units. Honestly I remember spending more time replacing bathroom extractors than I have had to invest in servicing or repairing the MVHR units - they are super reliable. If they crap out, well you just swap a new unit in - takes an hour or two. Of course you can keep windows open but most people don't want the comfort or heating cost implications of that.

@theblackoutstreamer3070 10 ай бұрын

If i have 8 inch ducting with reducer to 6 inch where should i put the reducer? Close to the fan or close to the hole in wall Fan - - - reducer >>>>>>>>>>>>> hole in wall Or Fan - - - - - - - - - - - - - reducer >>> hole in wall Key - = 8 inch duct > = 6 inch duct Would it make any difference?

@xxxx-wv6hp 2 ай бұрын

There is a nasty smell coming out of those vents can you tell me why I have been sick since I moved here and it’s a brand new apartment filters are clean so I think it’s bringing nasty polluted toxic air inside my apartment

@ColinRichardson 2 жыл бұрын

better than the cup version

@peterlewis1106 2 жыл бұрын

I did the cpd module for ventillation but never had my certificate ?

@efixx 2 жыл бұрын

Hi Peter, can you email me at joe@efixx.co.uk with the date you completed the CPD?

@peterlewis1106 2 жыл бұрын

@@efixx Hi Joe , thanks for prompt attention in sending the certificate.

@efixx 2 жыл бұрын

@@peterlewis1106 my absolute pleasure, thanks for getting in touch. 👍

@osvaldasmockus6995 2 жыл бұрын

I believe it's 75 and 90mm, but maybe there are some manufacturers which has their own ducts...

@UnblockMind 2 жыл бұрын

You can call them LEGS!

@loganbutler7037 2 жыл бұрын

Uh... It's A=πr2

@johnlloyd3377 2 жыл бұрын

The radius is half the diameter : 1/2 When you put diameter into the equation for the area of a circle you square it : 1/4

@charlotterobinson9452 2 жыл бұрын

It's a weird way to write the formula, but it is correct. r=d/2 so r^2=d^2/2^2=d^2/4...

@efixx 2 жыл бұрын

In practical engineering terms it's usually easier to measure the diameter of a cylinder which is why many engineers use the formula in the video. 😊👍

@charlotterobinson9452 2 жыл бұрын

@@efixx personally, I've always measured the diameter, halved it to get the radius and then put that into the formula. Six of one and half a dozen of the other.