Combi Boiler Market Outlook:
Combi Boiler Market size was over USD 37.1 billion in 2025 and is anticipated to cross USD 76.46 billion by 2035, witnessing more than 7.5% CAGR during the forecast period i.e., between 2026-2035. In the year 2026, the industry size of combi boiler is assessed at USD 39.6 billion.
The reason behind the growth is impelled by the growing demand for heating systems in urban residents, especially in temperate and tundra regions. According to estimates, more than 32% of households globally require both space heating and cooling.
Along with this, various favorable features of combi boilers, such as compact size, space-saving, and lower cost as compared to deploying two different systems for each function, are also projected to fuel the market growth.
The growing advancement in controlling technology is believed to fuel combi boiler market growth. Advancements such as connected controls, and remote and digital monitoring can aid in tracking and showing the boiler's water or steam pressure, and could potentially be used to encourage installers to configure the system properly.
