[iii]
CO2 Levels Measured in Bedroom
High overnight levels of CO2 are, reportedly, a contributing factor to waking up tired. Should we increase the ACH at night to compensate for this build-up? If we monitor our CO2 levels and see that the level is increasing – is our ventilation system flexible enough that we can boost the ACH (air changes per hour)? The Lunos Decentralised MHRV and DCV have this feature and allow the user more control over their indoor living environment and the ventilation rates. It is even flexible enough so that only the bedrooms are boosted and not the entire house – which is all that is needed at night. As we strive for more air-tight buildings – it more important than ever that we monitor and provide proper ventilation and with the present emphasis of insulating existing buildings to meet energy reduction targets – these are the very homes that were built with inadequate ventilation in the first place. How many of us are familiar with houses built 10 years ago with no bathroom exhaust fans and 4”/100mm ‘holes in the wall’ – normally blocked to stop the draft! Providing adequate ventilation is the only option!
[i] http://www.osstf.on.ca/en-CA/services/health-safety/information-bulletins/inadequate-ventilation-and-high-co2-levels accessed 1 November 2014
[ii] https://www.sciencenews.org/article/elevated-carbon-dioxide-may-impair-reasoning accessed 1 November 2014
[iii] Air Change Measurements Using Tracer Gases: Methods and Results. Significance of air change for indoor air quality By Detlef Laussmann and Dieter Helm - http://www.intechopen.com/books/chemistry-emission-control-radioactive-pollution-and-indoor-air-quality/air-change-measurements-using-tracer-gases-methods-and-results-significance-of-air-change-for-indoor accessed 1 November 2014