Combi Boiler Global Market Report 2026

A combi boiler, or combination boiler, is a compact and energy-efficient unit that provides both central heating and instant hot water without requiring a separate water tank or cylinder. It draws water directly from the mains, supplying hot water on demand. This space-saving option is ideal for smaller homes or apartments and is known for its straightforward installation and lower energy consumption. Combi boilers are especially suitable for households with limited space and moderate hot water needs.

The primary fuel types for combi boilers include natural gas, oil, electricity, and others. Natural gas combi boilers deliver efficient, low-emission heating and hot water, making them a cost-effective option in regions with established gas infrastructure. They employ various technologies, such as condensing and non-condensing systems, and come with different power ratings, including 24 kilowatts (kW) or less, 25-30 kW, 31-35 kW, and 36 kW or higher. These boilers are distributed through multiple channels, including online retail, physical stores, distributors and dealers, and direct sales, serving a range of end users in both residential and non-residential sectors.

Note that the outlook for this market is being affected by rapid changes in trade relations and tariffs globally. The report will be updated prior to delivery to reflect the latest status, including revised forecasts and quantified impact analysis. The report's Recommendations and Conclusions sections will be updated to give strategies for entities dealing with the fast-moving international environment.

Tariffs have impacted the combi boiler market by increasing the cost of imported heat exchangers, electronic controls, and precision components. These higher costs have affected pricing in residential heating markets, particularly in Europe and Asia Pacific. Condensing and hydrogen ready combi boilers are most impacted due to higher component complexity. At the same time, tariffs are supporting localized manufacturing and regional supply chain development.

The combi boiler market research report is one of a series of new reports from The Business Research Company that provides combi boiler market statistics, including the combi boiler industry global market size, regional shares, competitors with the combi boiler market share, detailed combi boiler market segments, market trends, opportunities, and any further data you may need to thrive in the combi boiler industry. This combi boiler market research report delivers a complete perspective of everything you need, with an in-depth analysis of the current and future scenarios of the industry.

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.

Combi Boiler Market Global Report 2026 from The Business Research Company provides strategists, marketers and senior management with the critical information they need to assess the market.

This report focuses combi boiler market which is experiencing strong growth. The report gives a guide to the trends which will be shaping the market over the next ten years and beyond.

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Where is the largest and fastest growing market for combi boiler ? How does the market relate to the overall economy, demography and other similar markets? What forces will shape the market going forward, including technological disruption, regulatory shifts, and changing consumer preferences? The combi boiler market global report from the Business Research Company answers all these questions and many more.

The report covers market characteristics, size and growth, segmentation, regional and country breakdowns, total addressable market (TAM), market attractiveness score (MAS), competitive landscape, market shares, company scoring matrix, trends and strategies for this market. It traces the market's historic and forecast market growth by geography.

• The market characteristics section of the report defines and explains the market. This section also examines key products and services offered in the market, evaluates brand-level differentiation, compares product features, and highlights major innovation and product development trends.
• The supply chain analysis section provides an overview of the entire value chain, including key raw materials, resources, and supplier analysis. It also provides a list competitor at each level of the supply chain.
• The updated trends and strategies section analyses the shape of the market as it evolves and highlights emerging technology trends such as digital transformation, automation, sustainability initiatives, and AI-driven innovation. It suggests how companies can leverage these advancements to strengthen their market position and achieve competitive differentiation.
• The regulatory and investment landscape section provides an overview of the key regulatory frameworks, regularity bodies, associations, and government policies influencing the market. It also examines major investment flows, incentives, and funding trends shaping industry growth and innovation.
• The market size section gives the market size ($b) covering both the historic growth of the market, and forecasting its development.
• The forecasts are made after considering the major factors currently impacting the market. These include the technological advancements such as AI and automation, Russia-Ukraine war, trade tariffs (government-imposed import/export duties), elevated inflation and interest rates.
• The total addressable market (TAM) analysis section defines and estimates the market potential compares it with the current market size, and provides strategic insights and growth opportunities based on this evaluation.
• The market attractiveness scoring section evaluates the market based on a quantitative scoring framework that considers growth potential, competitive dynamics, strategic fit, and risk profile. It also provides interpretive insights and strategic implications for decision-makers.
• Market segmentations break down the market into sub markets.
• The regional and country breakdowns section gives an analysis of the market in each geography and the size of the market by geography and compares their historic and forecast growth.
• Expanded geographical coverage includes Taiwan and Southeast Asia, reflecting recent supply chain realignments and manufacturing shifts in the region. This section analyzes how these markets are becoming increasingly important hubs in the global value chain.
• The competitive landscape chapter gives a description of the competitive nature of the market, market shares, and a description of the leading companies. Key financial deals which have shaped the market in recent years are identified.
• The company scoring matrix section evaluates and ranks leading companies based on a multi-parameter framework that includes market share or revenues, product innovation, and brand recognition.

Scope

• Markets Covered:1) By Fuel: Natural Gas; Liquefied Petroleum Gas; Oil; Electric
• 2) By Technology: Condensing; Non-Condensing
• 3) By Power Output: 24 Kilowatt (kW) Or Less; 25-30 Kilowatt (kW); 31-35 Kilowatt (kW); 36 Kilowatt (kW) Or More
• 4) By Distribution Channel: Distributors and Dealers; Direct Sales; Online Sales
• 5) By End-Use: Residential; Non-Residential
• Subsegments:
• 1) By Natural Gas: Conventional Gas Combi Boilers; Condensing Gas Combi Boilers; Hydrogen-Ready Gas Combi Boilers
• 2) By Liquefied Petroleum Gas: Conventional LPG Combi Boilers; Condensing LPG Combi Boilers
• 3) By Oil: Condensing Oil Combi Boilers; Biofuel-Compatible Oil Combi Boilers
• 4) By Electric: Direct Electric Combi Boilers
• Companies Mentioned: 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.
• Countries: Australia; Brazil; China; France; Germany; India; Indonesia; Japan; Taiwan; Russia; South Korea; UK; USA; Canada; Italy; Spain.
• Regions: Asia-Pacific; South East Asia; Western Europe; Eastern Europe; North America; South America; Middle East; Africa
• Time Series: Five years historic and ten years forecast.
• Data: Ratios of market size and growth to related markets, GDP proportions, expenditure per capita,
• Data Segmentations: country and regional historic and forecast data, market share of competitors, market segments.
• Sourcing and Referencing: Data and analysis throughout the report is sourced using end notes.
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