Recommendations for a CO2 detector please.

[saveasteading]

The steading is done. BCO final visit next week and ...ooops we haven't fitted a CO2 detector as required in one bedroom.

 

A CO2 monitor should be permanently fixed and is required to be mains operated."

 

Does this mean it needs to be fixed to the wall and hardwired? I

.

 

Having  to be hard wired is a pain and awkward being so late.

They seem to be very expensive. £150 and rising.

 

Any recommendations please, considering cost, rapid availability, ease of installation and, of course, that they perform.

[saveasteading]

I see we discussed this in 2021!  have I been on BH that long?

But it was early days I hoping you recent completers can advise.

[Marvin]

Yes but even the mains connected ones don't last for ever. ours lasted about 5 years!

 

Its the same with smoke detectors/heat sensors....

[Marvin]

See part J of the building regulations for positioning....

[saveasteading]

4 minutes ago, Marvin said:

ours lasted about 5 years!

got a name ?  Anything good or annoying about it? eg bright display or sounds.

[Kelvin]

The one we have is by Deta. Hardwired. 

It only lights up when you press the button and it’ll cycle through 8hr average, 24hr average, and 24hr peak. It will display Green, Amber, or Red depending on the level of CO₂ detected. Currently showing 24hr peak. 

 

 

Edited Sunday at 14:00 by Kelvin

[MikeSharp01]

5 minutes ago, Kelvin said:

It will display Green, Amber, or Red depending on the level of CO₂ detected. Currently showing 24hr peak. 

Where is the sensor, I dimly recall it has to be no more than 300mm above the floor. 

[SteamyTea]

I am sure I have asked this before, why a CO₂ detector?

CO is the killer.

 

CO₂ sensors need permanent calibration, so not that reliable in reality.

[BotusBuild]

@SteamyTea see this - https://www.co2meter.com/en-uk/blogs/news/dangers-of-co2-what-you-need-to-know?srsltid=AfmBOorKFZDWt11eb2LlY5H9o5lyfIzqouj0eAm_Xc8cbAPzbeZsuZ-F#co2-dangers

 

In a domestic environment I guess the issue is for basements where the "heavy" gas cannot naturally escape particularly if used as a bedroom

[SteamyTea]

6 minutes ago, BotusBuild said:

@SteamyTea see this - https://www.co2meter.com/en-uk/blogs/news/dangers-of-co2-what-you-need-to-know?srsltid=AfmBOorKFZDWt11eb2LlY5H9o5lyfIzqouj0eAm_Xc8cbAPzbeZsuZ-F#co2-dangers

 

In a domestic environment I guess the issue is for basements where the "heavy" gas cannot naturally escape particularly if used as a bedroom

I think if you see 40k ppm in a confined space, you have bigger immediate problems, like how to scratch your way out of a coffin.

 

 

 

 

[JohnMo]

We use Deta, as linked above. Been ticking away without issue for a couple of years.

 

29 minutes ago, SteamyTea said:

am sure I have asked this before, why a CO₂ detector

To show the people living in the building it is being ventilated correctly.

 

43 minutes ago, MikeSharp01 said:

Where is the sensor, I dimly recall it has to be no more than 300mm above the floor. 

Between 1.4 and 1.6m from floor if wall mounted.

 

https://www.gov.scot/publications/building-standards-technical-handbook-2020-domestic/3-environment/3-14-ventilation/

[JohnMo]

1 hour ago, Marvin said:

part J of the building regulations

Different equipment - you are quoting CO not CO2.

[SteamyTea]

11 minutes ago, JohnMo said:

To show the people living in the building it is being ventilated correctly

Is that because Scotch regulations are different than England's. Better air tightness and mandatory mechanical ventilation below a set ACH level.

If that is the case, it is not really the CO₂ levels that are important, more a case, as you say, the place is being ventilated.

Edited Sunday at 15:04 by SteamyTea

[Kelvin]

1 hour ago, MikeSharp01 said:

Where is the sensor, I dimly recall it has to be no more than 300mm above the floor. 

It doesn’t specify as far as I can remember other than it must be hard wired, easily visible, not covered up, not at the head of the bed, not in corners, good airflow. There are other guidelines about what it displays and how it’s displayed. It also shouldn’t have an alarm as folk will switch them off. We also fitted one in the smaller guest bedroom and the peak reading is much higher. 
 

https://www.gov.scot/binaries/content/documents/govscot/publications/advice-and-guidance/2017/11/building-standards-domestic-ventilation-supporting-guidance/documents/building-standards-domestic-ventilation-supporting-guidance-version-2.1-november-2017/building-standards-domestic-ventilation-supporting-guidance-version-2.1-november-2017/govscot%3Adocument/Building%2Bstandards%2Bdomestic%2Bventilation%2Bguidance%2C%2BNovember%2B2017.pdf

Edited Sunday at 15:31 by Kelvin

[JohnMo]

10 minutes ago, Kelvin said:

1 hour ago, MikeSharp01 said:

Where is the sensor, I dimly recall it has to be no more than 300mm above the floor. 

It doesn’t specify as far as I can remember

It does

Unless otherwise indicated by the manufacturer, a carbon dioxide monitor, with or without an integral detector, should be mounted between 1.4m and 1.6m above floor level. A carbon dioxide detector head (or monitor if integrated) should not be sited within 1m of the expected location of a bed-head.

[Kelvin]

Ah right. I may have mixed up the detector and separate head unit. Ours are integrated and at 144cm. I cut the holes for them so that might be just good luck but more likely under instruction from the electrician. 

[Kelvin]

Oh and congrats @saveasteading on getting there. Given I did actually see it before the renovation work started I know how much work was needed. 

[saveasteading]

6 hours ago, Kelvin said:

congrats @saveasteading on getting there.

This last year has had very little input from me, but masses of work by daughter and soninlaw. They have excelled. 

They've been boarding in the stairway today too. A shame to lose the storage space but needs must.