Air Changes Calculator Room Volume Length (m)* Width (m)* Height (m)* Calculate Reset Room Volume (m3) Air Changes per Hour Name CADR(m3/h) Room Volume 100% ACH 50% ACH For a more detailed report, contact us on enquiries@marspurifier.com Contact Us Your name Your email Subject Phone Number Your message (optional) Δ Get in touch today! Email enquiries@marspurifier.com phone 0800 099 6375 Location 31 Wollaton Hall Drive, WollatonNottingham, NG8 1AF, United Kingdom