Recent content by martinwinlow

I gather 'the old system' (pre-part L) recommended 4 air changes per hour generally in domestic premises but that was for an average air-tight building. Given the one in question is a bit more airtight, let's go with three. What follows is a calculation to determine what three changes of air per...

This is such a topical subject (mould hysteria) and needs much more exposure than it gets in the media at the moment.

Hi All, I'm trying to source a replacement mortice sashlock for a front door. Ideally I'd just replace it with the same make and model one which would be a 10 minute job. Problem is, even the lock-maker's website (Zoo Hardware) hasn't got fully dimensioned drawings for their locks, let alone...

Agree on both points but the thing now (Vs even 5 years back) is that PV is potentially way simpler to install (even DIY), is cheaper and hugely more versatile as you can do anything with the PV-generated energy compared to just making hot water with solar thermal.

So, I gather the answer to my OP is 'no'...?

Why?

Thank you for your coments but they do not answer my question. I did not post anticipating a lecture on lock efficacy, whatever the type!

Well, it is in the sense that it is only now being actually marketed... (are you always this stroppy?)...

Wondering if anyone can short-circuit my research into replacing the utterly useless Yale Conexis L1 smart lock I have had this past 2 years? I want one that senses when I am within ~10 feet or so of the door and unlocks it automatically by the time I get to it based on the presence of my mobile...

To be fair, you could probably train a monkey to replace the battery! I hope your L1 (non-keypad) works better than the one I have been fighting with for the last 2 years - and have finally given up on. It was even replaced under warranty and now chews through a set of AAs in about 2 weeks -...

Hi All, (PCM = phase change material) There is a bit of a revolution going on at the moment with respect to the end of the hot water cylinder era and the start of its replacement, the 'heat battery'. Some of you will have heard about this technology already which is being spear-headed by an...

Umm... Thanks for all the suggestions but the words 'Mains-Powered' in the title of the OP obviosuly confused some of you ! Besides which, I was looking for somethng a bit more (well... completely, actually) 'off-the-shelf'. As it happens, an eBay seller has replied suggesting their kit fits...

It all adds up, laddie!! (... and I'm as Scotttish as Big Ben)

Hi, I'm in the market for an Energy Efficient wired and mains-powered Door Bell. I've had a look around on the interweb and all I can find is the usual old-fashioned stuff which appears to use a wire-wound transformer rather than modern switch-mode power supply and incandescent (often...

(Appreciate this is an old thread but it may be useful for others researching the same thing). There are replacement parts still available (but getting scarce, now) for these older Hep2o fittings (grey body with green grab-ring) - specifically the o-ring (though I guess if you just used any old...