vehicle air quality
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When Should You Switch from Recirculation to Fresh Air in a Hot Car? A Real CO₂ Test
In a real sun-heated vehicle test, we ventilated the cabin, used A/C recirculation for rapid cooling, and measured 1,034 ppm CO₂ with EVO-CO2V before…
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CO₂, Formaldehyde and TVOC in a Car: What We Measured in Three Real-World Tests
Our team compared CO₂, formaldehyde and TVOC readings across three real car-cabin conditions. The results showed that these measurements can behave very differently, including…
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Why Do Two CO₂ Monitors Show Different Readings? Our Side-by-Side Car Test
Our team placed two CO₂ monitors side by side inside a car. The readings began close together at about 697 and 710 ppm, but…
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Does Automatic Car Climate Control Switch to Fresh Air When CO₂ Rises? Our Real Test
Our team monitored cabin CO₂ while the vehicle climate system was operating in automatic mode. During the recorded sequence, CO₂ rose from about 2,980…
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Can a Parking Air Conditioner Keep Cabin Air Fresh? Our Real CO₂ Test
A parking air conditioner can make a parked vehicle much more comfortable in hot weather. But cooling the cabin raises another question: Does a…
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Is Cracking Car Windows Enough to Control CO₂ While Parked? Our Real Test
Our team tested cabin CO₂ while sitting in a parked car with two windows slightly open and a parking air conditioner running. After an…
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Can a Car Air Purifier Reduce CO₂? Our Real Cabin Test
Our team ran a car air purifier inside a vehicle while monitoring cabin CO₂. During the real-world test, CO₂ still rose from about 735…
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Can a Car Air Freshener Reduce CO₂? Our Real Cabin Test
Our team tested whether a hanging car air freshener could noticeably affect cabin CO₂. During our real-world test, the reading still rose from about…
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Can Wearing Masks Reduce CO₂ Buildup in a Car? Our Real Test
Our team tested two people wearing masks inside a car to see whether masks would reduce cabin CO₂ buildup. During the real-world test, CO₂…