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!

Double or Triple Glazed Windows?

TRBob · 2023-01-03T10:37:03Z

Firstly, apologies I cannot see an appropriate place to post this, I'm going with ASHP as that is what I have. So far in our 1983 built house which we renovated and moved into last year we have replaced the two front bedroom windows with modern double glazed units, as they were letting air/noise in, one could just be opened even when locked. The rest of the house is double glazed with what looks to be quite old double glazed units which are ok for now but we aim to do everywhere as we can afford it. When I started the renovation I was warned off triple glazing as apparently modern double is almost as good and is lighter/cheaper. I've read all sorts of different view points online and am interested to hear from people with ASHP. The recent cold snap highlighted what needs to be done as a priority; The lounge, a bay window - thinking about doing away with if it's not too much hassle as the top and bottom will not be insulated, gets condensation the worst by far. At the other end is a north facing, sliding patio door with metal frame that gets condensation. When we replace, we're not sure what to go with, bi-folds are nice, but I hear that they are very expensive. Personally I'm not that bothered about having the whole space open in summer. The main bathroom, north facing window, two external walls, it got noticeably colder compared to the other upstairs rooms (the en-suite next door being the main basis for comparison) despite having a large new radiator that does get hot. I am considering a triple glazed unit here if no where else. To address the condensation I mentioned, since the temperature dropped we got really bad condensation on the windows, so I got a heated PIV installed which cured the upstairs overnight, even when set to full which is supposedly for a much bigger home we still had a significant amount downstairs, so I've set it lower so that it keeps upstairs clear. My gut tells me that it's the old cold windows that are the issue, not the PIV as my study (was internal garage and now probably the most well insulated room in the house) which has a brand new double glazed unit is always bone dry and doesn't get overly warm as the radiator is at the end of the heating loop. Also we have powerful extractors in the bathrooms and always use the extractor when cooking. I've tried using the de-humidifier downstairs, but its reading a pretty low humidity after a short period.

Page 2 / 2 Prev

Insulation

Last Post by TRBob 9 months ago

13 Posts

9 Users

2 Reactions

5,091 Views

RSS

TRBob

(@trbob)

Trusted Member Member

Joined: 3 years ago

Posts: 56

Topic starter 31/07/2025 11:09 am

@toodles Glad to hear things are progressing well for you.

I opted for Triple Glazing, they are Argon filled 4-12-4-12-4 Clear Softcoat Triple Black Thermal.

We still have some more to do as funds allow, but the ones that have been done are great, glad that I got them done.

Mitsubishi Ecodan 8.5kW
4.4kW Solar PV
5.2 kWh Battery Storage
1983 build, 300mm loft insulation, cavity wall insulation (beads)

ReplyQuote

Page 2 / 2 Prev

26 Forums
2,590 Topics
60.3 K Posts
287 Online
6,922 Members

Forum Icons: Forum contains no unread posts Forum contains unread posts

Topic Icons: Not Replied Replied Active Hot Sticky Unapproved Solved Private Closed

RE: Octopus Cosy Heat Pump Owners & Discussion Thread

Hush mode now released. I've not tried it yet. Should b...

By swwils , 20 minutes ago
RE: Air-to-air heat pumps - best models and installers

Are you creating a whole new category for A2A?

By ASHP-BOBBA , 28 minutes ago
RE: A2A vs A2W: Which Heat Pump Would You Pick?

There isn’t as far as I know, @djh, but you’re welcome ...

By Majordennisbloodnok , 13 hours ago
RE: Can anyone explain the following behaviour with a Grant Aerona 3 R30 / Smart Controller?

Final Update. Yesterday, I was going through the moti...

By Unsure , 14 hours ago
RE: How much can an east/west solar solar system be oversized?

Best performance occurs with PV string near inverter no...

By bobflux , 14 hours ago
RE: Forum updates, announcements & issues

Thank you Mars for all your dedication to improvements;...

By Toodles , 17 hours ago
RE: Who do I complain to about a poor ECO4 installation, can anyone advise?

Take it one step at a time. If you can get the dhw and...

By JamesPa , 23 hours ago
RE: Selling 2 x Kensa Shoebox 7kw GSHP (New)

Hi Jain, we’ve got an ashp so I’m afraid we won’t be yo...

By Judith , 23 hours ago
RE: Day 1 of my install

No buffer or low loss header Grant controller in sens...

By JamesPa , 1 day ago
RE: Are We Sleepwalking Into Another Race to the Bottom?

That's an amazing job to get all that in there! A truly...

By Batpred , 1 day ago
RE: Anyone concerned about GivEnergy?

Thanks for your advice - I'll keep trying with the inst...

By JohnDwyer , 2 days ago
RE: Plug and play solar. Thoughts?

I am also yet to find a case where an installation that...

By Batpred , 2 days ago
RE: British Gas vs Octopus Energy vs Heat Geek vs EDF vs Aira vs OVO vs EON.Next vs Boxt

This is what I got from OVO. At least it was quick.. ...

By Batpred , 2 days ago
RE: IVT greenline HT Plus E - Circulation Pump Constantly On

Welcome to the forums. Irrespective of which brand yo...

By Mars , 2 days ago
RE: 7.5kW Heat Loss, But Quoted a 10kW Midea. No Re-Pipe, No Buffer Tank. Does This Add Up?

Oh, how I love these old scientists!I'm in with your 5 ...

By LeJamaisContent , 2 days ago
RE: Jokes and fun posts about heat pumps and renewables

@jamespa Someone who is not easily phased I suppose.

By Toodles , 3 days ago
RE: Gas supply disconnection

@downfield Once OE had removed our gas meter and capped...

By Toodles , 3 days ago
Living with a Low Loss Header (Or Measure For Measure, it’s All About the Pump)

I know, low loss headers (LLHs) aren’t necessarily ‘low...

By Toodles , 3 days ago
RE: What is the main ‘dictator’ of Agile’s unit price?

After seeing umpteen negative price slots again today, ...

By ChandyKris , 3 days ago
RE: The Reality Behind a Failed Heat Pump Installation – and an IWA Insurance Rejection

@ian-w Getting back to the problem in hand, what do yo...

By JamesPa , 3 days ago
RE: Solar Power Output – Let’s Compare Generation Figures

@papahuhu Generally, I leave Homely to take care of mat...

By Toodles , 4 days ago
RE: George Cove and Lord Kelvin: The Missed Convergence That Could Have Reshaped Renewables & the World

@judith, glad you found the story interesting. On eff...

By Mars , 4 days ago

Forums

Double or Triple Glazed Windows?

Join Us!

Worth Watching

Latest Posts

Members Online