Research Methodology Baseline Methodology Our dedicated team of industry experts has monitored and analyzed various aspects of the global HVAC cleaning services market. The team has analyzed the outlook of various segments of this market, while considering the major influencing factors such as HVAC cleaning services. The study includes market forecasting, which would enable our clients to take better decisions while planning their strategy to achieve sustainability in the global HVAC cleaning services market. Methodology Followed forCalculation of Market Size: • Market Size by Value : Market size, in terms of value, for the year 2020 was calculated based on information collected through exhaustive secondary research and primary surveys, with various key opinion leaders/stakeholders, such as HVAC cleaning services companies, channel partners, market influencers & end-users, industry experts, and other industry participants. • The team interviewed more than 15 – 20 HVAC cleaning services companies, 100 – 120 end-users, and 15 – 20 industry experts and other value chain stakeholders in the global HVAC cleaning services market to obtain the overall market size from 2016 to 2020, which was validated by the Delphi technique. Taking standard deviation into consideration, the market size was averaged out, to arrive at the market size data during 2016-2020. 21