Combi Boiler Market Report 2026

The combi boiler market size has grown strongly in recent years. It will grow from $33.3 billion in 2025 to $36.12 billion in 2026 at a compound annual growth rate (CAGR) of 8.5%. The growth in the historic period can be attributed to growth of urban housing developments, replacement of traditional boiler systems, demand for energy efficient home heating, limited space availability in residential buildings, rising natural gas infrastructure.

The combi boiler market size is expected to see strong growth in the next few years. It will grow to $49.42 billion in 2030 at a compound annual growth rate (CAGR) of 8.2%. The growth in the forecast period can be attributed to stricter carbon emission regulations, expansion of hydrogen blending initiatives, growth of smart home adoption, increasing electricity grid decarbonization, rising residential renovation activities. Major trends in the forecast period include growing adoption of condensing combi boilers, rising demand for hydrogen ready boiler systems, increasing integration of smart and connected controls, shift toward compact and space saving heating solutions, expansion of electric and hybrid combi boiler models.

The increasing demand for energy-efficient heating systems is expected to drive the growth of the combi boiler market in the coming years. Energy-efficient heating systems are designed to use less energy while providing equal or improved warmth. The rise in demand is motivated by the need to reduce energy costs through lower power consumption and decreased utility bills. Combi boiler systems utilize energy-efficient heating technologies to minimize fuel usage, reduce operating expenses, and deliver consistent heating with minimal environmental impact. This makes them a cost-effective and environmentally friendly choice for modern homes. For example, in September 2024, according to ElectricHomes, a UK-based information and media organization, 36,799 air source and 2,469 ground or water source heat pumps were installed in 2023, bringing the total number of Microgeneration Certification Scheme (MCS) certified units to 229,6188, representing a 20% increase from 2022. The UK aims to reach 600,000 installations annually by 2028. Thus, the rising demand for energy-efficient heating systems is boosting the combi boiler market.

Key players in the combi boiler market are developing advanced products, such as high-performance combi boilers, to meet the rising consumer demand for sustainable heating solutions. High-performance combi boilers are state-of-the-art heating units that provide instant hot water and central heating with maximum energy efficiency, delivering faster heating and better fuel savings compared to traditional boilers. For example, in February 2025, Viessmann Climate Solutions, a UK-based heating and refrigeration manufacturer, launched the Vitodens 025-W, a new compact combi boiler designed to provide efficient, quiet heating for homes with limited space. Featuring advanced components such as a durable Inox-Radial stainless steel heat exchanger, a high-efficiency MatriX-Plus burner, and a compact, quiet design, it achieves up to 98% seasonal efficiency (ERP Class A) and is simple to install and operate, all offered at an attractive price point.

In January 2024, Carrier Global Corporation, a US-based climate and energy‑technology company, acquired Viessmann Climate Solutions SE for an undisclosed amount. Through this acquisition, Carrier Global aims to expand and reinforce its global leadership in intelligent HVAC and sustainable climate‑energy solutions, particularly enhancing its presence in the residential and light‑commercial (RLC) segment across Europe and beyond. Viessmann Climate Solutions SE is a Germany-based heating, ventilation, and climate-technology company specializing in highly efficient and renewable climate solutions.

Major companies operating in the combi boiler market are Vaillant Group, Viessmann Werke GmbH & Co. KG, Worcester Bosch Group, Ariston Group, Baxi Heating UK Limited, Ideal Heating, Ferroli S.p.A., Intergas Heating Ltd., Alpha Heating Innovation, ATAG Heating Technology, Saunier Duval, Glow-worm, Rinnai Corporation, Noritz Corporation, KD Navien Co. Ltd., Immergas S.p.A., De Dietrich Thermique, Chaffoteaux (Ariston Brand), Vaillant Boilers (Vaillant Brand), Bosch Thermotechnology, Fondital S.p.A., Sime S.p.A., Cosmogas S.r.l.

North America was the largest region in the combi boiler market in 2025. Asia-Pacific is expected to be the fastest-growing region in the forecast period. The regions covered in the combi boiler market report are Asia-Pacific, South East Asia, Western Europe, Eastern Europe, North America, South America, Middle East, Africa. The countries covered in the combi boiler market report are Australia, Brazil, China, France, Germany, India, Indonesia, Japan, Taiwan, Russia, South Korea, UK, USA, Canada, Italy, Spain.

The combi boiler market consists of sales of lpg-powered combi boiler, hydrogen-ready combi boiler, condensing combi boiler, smart combi boiler, dual-fuel combi boiler and biomass combi boiler. Values in this market are ‘factory gate’ values, that is, the value of goods sold by the manufacturers or creators of the goods, whether to other entities (including downstream manufacturers, wholesalers, distributors, and retailers) or directly to end customers. The value of goods in this market includes related services sold by the creators of the goods.

The market value is defined as the revenues that enterprises gain from the sale of goods and/or services within the specified market and geography through sales, grants, or donations in terms of the currency (in USD unless otherwise specified).

The revenues for a specified geography are consumption values that are revenues generated by organizations in the specified geography within the market, irrespective of where they are produced. It does not include revenues from resales along the supply chain, either further along the supply chain or as part of other products.

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