Search with Wattson

Notifications

Clear all

Joining the Renewable Heating Hub forums is completely free and only takes a minute. By registering you’ll be able to ask questions, join discussions, follow topics you’re interested in, bookmark useful threads and receive notifications when someone replies. Non-registered members also do not have access to our AI features. When choosing your username, please note that it cannot be changed later, so we recommend avoiding brand or product names. Before registering, please take a moment to read the Forum Rules & Terms of Use so we can keep the community helpful, respectful and informative for everyone. Thanks for joining!

Trickle vents v mechanical ventilation

heat-pump-newbie · 2022-04-19T14:44:00Z

Having the ASHP I've become very aware how much heat is lost by having our windows open a little for ventilation. We don't have trickle vents, just a lockable vent setting on the window catches. I want to get new double glazing, but the law states they need trickle vents. Catch 22 ! Get high spec double glazed window with frames incorporating a non-thermal bridging construction, then make holes in them for air. Our house never going to be airtight enough for MVHR, so what sort of ventilation would be enough to satisfy the legal requirement to avoid having the trickle vents ?

Page 2 / 2 Prev

Air Source Heat Pumps (ASHPs)

Last Post by heat-pump-newbie 4 years ago

16 Posts

4 Users

22 Reactions

11.9 K Views

RSS

heat-pump-newbie

(@heat-pump-newbie)

Reputable Member Member

Joined: 5 years ago

Posts: 170

Topic starter 21/04/2022 11:14 am

Thanks Jeff. The supplier I'm using is very hot on the regs, which is reassuring really. He's pointed out all the gaps and poorly finished areas of the old windows. They weren't particularly cheap 20 years ago but all the gaps were just covered by upvc trim outside and inside so leaking heat. This bloke strikes me as a perfectionist, and no doubt priced accordingly.

👍

ReplyQuote

Jeff

(@jeff)

Noble Member Member

Joined: 5 years ago

Posts: 644

21/04/2022 11:51 am

Posted by: @heat-pump-newbie

Thanks Jeff. The supplier I'm using is very hot on the regs, which is reassuring really. He's pointed out all the gaps and poorly finished areas of the old windows. They weren't particularly cheap 20 years ago but all the gaps were just covered by upvc trim outside and inside so leaking heat. This bloke strikes me as a perfectionist, and no doubt priced accordingly.

Then you may find he wants you to get building control to sign of any new ventilation prior to him installing new windows without vents if you go down that route.

Sounds like the last thing he would want is to fall foul of an audit inspection.

👍

ReplyQuote

olly

(@olly)

Eminent Member Member

Joined: 5 years ago

Posts: 18

08/11/2022 12:28 am

@heat-pump-newbie what did you decide to do with your ventilation in the end? I am having to make a similar choice soon, so any further information would help

ReplyQuote

heat-pump-newbie

(@heat-pump-newbie)

Reputable Member Member

Joined: 5 years ago

Posts: 170

Topic starter 08/11/2022 1:12 pm

@olly A combination of waiting to sell a property to fund the windows and general procrastination means I haven't actually had any work done yet. However I think a full MVHR system would be too awkward and expensive for us, so I hope to get someone to fit one of these in the bathroom (or similar as I haven't looked at this recently)

https://www.blauberg.co.uk/en/blauberg-uk-mvhr-heat-recovery-ventilation-range/decentralised-single-room-heat-recovery-ventilation-units/blauberg-aeris-midi-decentralised-single-room-ductless-heat-recovery-unit-ventilator-wall-mounted-silent-heat-recycling-ventilation-filtered-fresh-a

and go for the trickle vents as per the regs. If I can use my existing old warm air ducts one day for fresh air input then so much the better.

ReplyQuote