Plethysmograph Market Outlook:
Plethysmograph Market size was over USD 117.96 million in 2025 and is poised to exceed USD 197.71 million by 2035, witnessing over 5.3% CAGR during the forecast period i.e., between 2026-2035. In the year 2026, the industry size of plethysmograph is estimated at USD 123.59 million.
The growth of the market can be attributed to the increasing prevalence of chronic respiratory diseases, such as asthma and COPD, as well as the growing demand for accurate diagnosis of respiratory diseases. As of 2019, chronic respiratory diseases accounted for 534,242 deaths in North America, with 50% of deaths occurring in men and 50% in women. The mortality rate among men (42.2 deaths per 100,000) was higher than the mortality rate among women (31.0 deaths per 100,000). Plethysmographs are used to measure the volume of air in the lungs, as well as the amount of oxygen that is inhaled and exhaled. As the prevalence of respiratory diseases increases, the need for more accurate and reliable measurement of air volume and oxygen levels also increases, driving up the market growth.
In addition to these, factors that are believed to fuel the market growth of plethysmographs include growing awareness about health and well-being, increasing prevalence of lifestyle diseases, rising demand for non-invasive and painless diagnostic procedures, Moreover, technological advances in medical devices enable the development of next-generation plethysmographs, which is projected to drive market growth in coming years. For instance, COSMED's Q-Box is an advanced body box designed to accurately measure thoracic gas volume, including static lung volume (TLC, RV, and ITGV) and airway resistance and conductance (RAW and GAW) using complete body plethysmography.
