{"id":739,"date":"2014-07-28T14:38:28","date_gmt":"2014-07-28T19:38:28","guid":{"rendered":"http:\/\/www.kele.com\/keleblog\/?p=739"},"modified":"2022-03-15T16:26:21","modified_gmt":"2022-03-15T21:26:21","slug":"co-and-co2","status":"publish","type":"post","link":"https:\/\/www.kele.com\/content\/blog\/2014\/07\/28\/co-and-co2","title":{"rendered":"What&#8217;s the Real Difference Between CO and CO2?"},"content":{"rendered":"<p>In the past few years, there has been a lot of media attention brought to carbon monoxide (CO), as well as carbon dioxide (CO2) and their affect on occupied spaces and indoor air quality. Both are colorless and odorless gases that can have a negative impact on building occupants. However, be sure you know what sort of activity is happening in the space to accommodate the most appropriate sensor.<\/p>\n<p>A Kele Product Manager states it simply, \u201cCO is a car and CO2 are people.\u201d He tells a story about moving into his new home this spring and discovering that the previous homeowner had installed CO detectors in the attic, right next to the electric water heater and the electric HVAC unit. Umm\u2026someone watched the morning news! \u201cKeep your family safe and make sure you know if they are at risk for high levels of carbon monoxide in your home.\u201d Some consumers, out of misinformation and fear, install them in their homes and businesses to protect their families and visitors from this deadly colorless and odorless gas. However, many could have saved their time and money. Carbon monoxide will not be present in a space unless there is incomplete burning of various fuels, including coal, wood, charcoal, oil, kerosene, propane, and natural gas. Therefore, the electric equipment in the attic didn\u2019t need those detectors. The types of equipment that could produce CO include any equipment powered by internal combustion engines such as cars, portable generators, lawn mowers, and power washers. So, a wood shop or environment in a garage with gas-powered equipment running throughout the day would need CO detectors installed. In environments that only have electric equipment, like our product manager\u2019s attic, actually don\u2019t. Oddly enough, we have had reports that many local codes actually DO call for CO sensors in unlikely places, like hotel rooms. This has been most often mentioned in the Northeast. As always, check your local code books for what is mandatory in your area.<\/p>\n<p>More often, in the building automation industry, your customers will be in need of a <a href=\"\/gas-and-specialty-sensors\/carbon-monoxide.aspx\">carbon dioxide detector<\/a> in occupied spaces such as classrooms, offices, meeting halls or auditoriums. It\u2019s an old science, but demand controlled ventilation has proven the front-runner for saving costs and efficiencies in keeping occupied spaces comfortable with <a href=\"\/gas-and-specialty-sensors\/co2\/iaq.aspx\">CO2 detection<\/a>. Please see the comparison of methods for controlling indoor air quality below:<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter\" src=\"https:\/\/assets.kele.com\/content\/wp-content\/uploads\/2014\/07\/155b713d-7f88-40de-bc02-6abf807cf6b2.png\" alt=\"\" width=\"900\" height=\"486\" \/><\/p>\n<p>As you can see, in looking at the orange line, which indicates the flow of persons in the space, the CO2 sensing method most closely mimics their occupancy of the space. It\u2019s been the preferred method for controlling the air mix for so long, you may have never stopped to consider what other alternatives a company might have, other than just setting the thermostat for particular hours of business or running it full blast all of the time.<\/p>\n<p>As you\u2019re engineering and installing these systems, take a moment to check out this quick checklist borrowed from ASHRAE (the American Society of Heating, Refrigeration and Air-Conditioning Engineers), to make sure you are in compliance with the ASHRAE Standard 61.1-2010 and 2012 IECC for occupant density spaces, and take these into consideration while planning your jobs.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone\" src=\"https:\/\/assets.kele.com\/content\/wp-content\/uploads\/2014\/07\/4c44b928-1b66-4c31-aa49-4ae195a169c2.png\" alt=\"\" width=\"900\" height=\"1219\" \/><\/p>\n<p>This next table below lists the default occupant densities by occupancy category from the 2012 IMC and ASHRAE Standard 62.1-2010 for high-density occupancies. Greyed areas are blank where the category exists in one ventilation standard and not the other. Greyed areas with numbers show the values from separate \u201creferred to\u201d or similar category groups in the same standard.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone\" src=\"https:\/\/assets.kele.com\/content\/wp-content\/uploads\/2014\/07\/0953870e-eb24-4534-a06d-fb8b5ba503f3.png\" alt=\"\" width=\"900\" height=\"1242\" \/><\/p>\n<p>So, as a reminder, CO most likely won\u2019t be in an office space, and unless you\u2019re hosting a sardine party in your garage, you won\u2019t need to sense CO2 there.\u00a0 In the words of our Kele Product Manager,\u201cCO is a car and CO2 are people.\u201d<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In the past few years, there has been a lot of media attention brought to carbon monoxide (CO), as well as carbon dioxide (CO2) and their affect on occupied spaces and indoor air quality. Both are colorless and odorless gases that can have a negative impact on building occupants. However, be sure you know what [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":"","footnotes":""},"categories":[7],"tags":[],"class_list":["post-739","post","type-post","status-publish","format-standard","hentry","category-kele-makes-it-easy"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\r\n<title>What&#039;s the Real Difference Between CO and CO2? - kele.com<\/title>\r\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\r\n<link rel=\"canonical\" href=\"https:\/\/www.kele.com\/content\/blog\/2014\/07\/28\/co-and-co2\" \/>\r\n<meta property=\"og:locale\" content=\"en_US\" \/>\r\n<meta property=\"og:type\" content=\"article\" \/>\r\n<meta property=\"og:title\" content=\"What&#039;s the Real Difference Between CO and CO2? - kele.com\" \/>\r\n<meta property=\"og:description\" content=\"In the past few years, there has been a lot of media attention brought to carbon monoxide (CO), as well as carbon dioxide (CO2) and their affect on occupied spaces and indoor air quality. 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