OpenTherm IoT Gateway Market Seen Reaching $2.2B by 2030

The OpenTherm Internet of Things gateway market is forecast to grow from $1.12 billion in 2025 to $2.2 billion by 2030, driven by smart home adoption, energy efficiency demands and retrofit heating upgrades. North America led the market in 2025, while Asia-Pacific is expected to grow fastest.

Why it matters: - OpenTherm IoT gateways sit at the intersection of smart heating, building automation and energy management. - The market’s growth points to broader demand for connected home and retrofit technologies that can cut heating costs and improve control. - The segment is also becoming more relevant as households and buildings look for vendor-neutral ways to connect boilers, thermostats and platform software.

What happened: - The Business Research Company projected the OpenTherm Internet of Things gateway market will rise from $1.12 billion in 2025 to $1.28 billion in 2026. - The company forecast the market will reach $2.2 billion by 2030. - The report cited a 14.8% CAGR for the 2025-2026 period and a 14.4% CAGR through 2030. - North America was the largest regional market in 2025. - Asia-Pacific is expected to be the fastest-growing region during the forecast period. - The report covers Asia-Pacific, South East Asia, Western Europe, Eastern Europe, North America, South America, the Middle East and Africa.

The details: - OpenTherm IoT gateways bridge OpenTherm-compatible heating systems with the internet or local networks. - The gateways convert data between OpenTherm protocols and IoT platforms. - The devices enable remote monitoring and control for heating systems. - The report said earlier growth came from limited interoperability among heating systems and control platforms, early adoption of smart thermostats in residential heating, fragmented communication protocols used by HVAC makers, rising demand for remote heating control in urban homes and higher energy costs. - Forecast growth is linked to smart building automation, energy-efficient heating management, retrofit adoption for legacy boilers and tighter integration with centralized building platforms. - Expected trends include OpenTherm-enabled boiler modernization, vendor-neutral heating control interfaces, retrofit installs of smart thermostat gateways in existing HVAC systems and demand-response automation for heating optimization. - The report also highlighted wider use of smart home automation systems, which let users remotely control heating, lighting, security and appliances. - The market is benefiting from growing IoT adoption tied to automation and real-time data connectivity. - The European Commission said in July 2025 that installed IoT-connected devices reached about 40 billion in 2023 and are expected to hit 49 billion by 2026. - Eurostat data from October 2024 showed average household electricity prices in the European Union rose to $31.21 per 100 kWh in the first half of 2023 from $27.32 per 100 kWh in the same period of 2022. - Ireland’s Central Statistics Office reported in October 2024 that 30% of internet users adopted smart home security solutions in 2024, up from 17% in 2022.

Between the lines: - The forecast suggests heating controls are moving from standalone hardware toward networked systems that can be managed alongside other building functions. - Rising energy costs are making efficiency features easier to sell, especially for legacy boiler retrofits and residential upgrades. - The regional outlook suggests mature smart-home markets remain large, but faster expansion may come from Asia-Pacific as connected infrastructure broadens.

What's next: - The Business Research Company said future growth will likely come from continued smart building automation, more retrofit installations and broader integration with centralized platforms. - The company also said demand-response automation and boiler modernization should remain key themes through 2030. - The report is available as a free sample and full report from the company’s announcement and the full report.

The bottom line: - OpenTherm IoT gateways are poised to grow with the shift toward smarter, more efficient heating systems, especially as retrofit demand and energy savings become bigger priorities.