The heat therapy units market was valued at USD 4,365.7 million in 2025, is projected to reach USD 9780.2 million by 2035 and is forecast to register an 8.4% CAGR between 2025 and 2035. In 2025, shortwave diathermy units hold 46.4% of product type demand and physiotherapy centers represent 34.7% of end user sales.