Indoor Air Quality

Ottawa, CanadaHealth 55/100

Mold Busters is one of Canada's largest indoor air quality, mold inspection, and remediation companies, founded in 2005 and headquartered in Ottawa, Ontario. The company provides professional mold testing, air quality testing, asbestos testing, VOC assessment, radon testing, and mold remediation services across Ontario, Quebec, and British Columbia — with major offices in Ottawa, Montreal, Toronto, and Vancouver. Mold Busters offers same-day lab results, IICRC-certified technicians, and comprehensive indoor environmental testing for residential, commercial, and insurance claim customers.

Harrogate, United KingdomHealth 53/100

EnviroVent is a UK-based ventilation manufacturer and indoor air quality specialist founded in 1987 and headquartered in Harrogate, North Yorkshire. Employing over 250 people with 60+ local branches across the UK, EnviroVent designs and manufactures extractor fans, heat recovery systems (MVHR), and positive input ventilation (PIV) units at its Harrogate factory. The company specializes in solving condensation, damp, and mould problems in UK homes through on-site surveys by local ventilation specialists, offering tailored product recommendations and installation for homeowners and landlords.