タンクレス給湯器の市場規模、シェア、成長分析：製品タイプ別、設置方法別、技術別、機能別、用途別、流量別、地域別 - 産業予測 2025～2032年

タンクレス給湯器の世界市場規模は、2023年に43億米ドルと評価され、2024年の47億米ドルから2032年には94億9,000万米ドルに成長し、予測期間（2025-2032年）のCAGRは9.2％で成長する見通しです。

消費者がエネルギー効率と持続可能性をますます優先するようになり、タンクレス給湯器の需要が急増しています。これらの革新的なシステムは、従来の貯湯式給湯器よりも消費エネルギーが最大34%少なく、環境意識の高い購入者にとって魅力的な選択肢となっています。オンデマンドでお湯を沸かすことで、かさばる貯蔵タンクが不要になるため、コンパクトな設計で小規模住宅に最適です。初期費用は高くつくが、タンクレスは長期的な節約効果があり、電気代は年間100～200ドル節約できます。消費者がこれらの環境に優しいソリューションにシフトすると、タンクレス給湯器の市場は、今後数年間で大きく成長する態勢を整えています。

目次

イントロダクション

• 調査の目的
• 調査範囲
• 定義

調査手法

• 情報調達
• 二次と一次データの方法
• 市場規模予測
• 市場の前提条件と制限

エグゼクティブサマリー

• 世界市場の見通し
• 供給と需要の動向分析
• セグメント別機会分析

市場力学と見通し

• 市場概要
• 市場規模
• 市場力学
  • 促進要因と機会
  • 抑制要因と課題
• ポーターの分析

主な市場の考察

• 重要成功要因
• 競合の程度
• 主な投資機会
• 市場エコシステム
• 市場の魅力指数（2024年）
• PESTEL分析
• マクロ経済指標
• バリューチェーン分析
• 価格分析

タンクレス給湯器市場規模：製品タイプ別& CAGR（2025-2032）

• 市場概要
• 電気
• ガス

タンクレス給湯器市場規模：設置方法別& CAGR（2025-2032）

• 市場概要
• 屋内
• 屋外

タンクレス給湯器市場規模：技術別& CAGR（2025-2032）

• 市場概要
• 凝縮技術
• 非結露技術

タンクレス給湯器市場規模：機能別& CAGR（2025-2032）

• 市場概要
• マニュアル
• リモートコントロール

タンクレス給湯器市場規模：用途別& CAGR（2025-2032）

• 市場概要
• 住宅用
• 商業用

タンクレス給湯器市場規模：流量別& CAGR（2025-2032）

• 市場概要
• 高い
• 低い

タンクレス給湯器市場規模：地域別& CAGR（2025-2032）

• 北米
  • 米国
  • カナダ
• 欧州
  • ドイツ
  • スペイン
  • フランス
  • 英国
  • イタリア
  • その他欧州地域
• アジア太平洋地域
  • 中国
  • インド
  • 日本
  • 韓国
  • その他アジア太平洋地域
• ラテンアメリカ
  • ブラジル
  • その他ラテンアメリカ地域
• 中東・アフリカ
  • GCC諸国
  • 南アフリカ
  • その他中東・アフリカ

競合情報

• 上位5社の比較
• 主要企業の市場ポジショニング（2024年）
• 主な市場企業が採用した戦略
• 最近の市場動向
• 企業の市場シェア分析（2024年）
• 主要企業の企業プロファイル
  • 企業の詳細
  • 製品ポートフォリオ分析
  • 企業のセグメント別シェア分析
  • 収益の前年比比較（2022-2024）

主要企業プロファイル

• Rheem Manufacturing Company（USA）
• A. O. Smith Corporation (USA)
• Navien, Inc. (South Korea)
• Rinnai Corporation (Japan)
• Bosch Thermotechnology (Germany)
• Noritz Corporation (Japan)
• Takagi Industrial Co., Ltd. (Japan)
• Eemax, Inc. (USA)
• Stiebel Eltron GmbH & Co. KG (Germany)
• Bradford White Corporation (USA)
• Eccotemp Systems LLC (USA)
• Titan (USA)
• Thermomax Ltd. (Ireland)
• Ariston Thermo Group (Italy)
• Vokera Ltd (UK)
• Chronomite Laboratories, Inc. (USA)
• Marey International LLC (Puerto Rico/USA)
• Hyundae Electronics Industries Co., Ltd. (South Korea)
• Ferroli S.p.A. (Italy)
• Paloma Industries, Ltd. (Japan)

結論と提言

Global Tankless Water Heater Market size was valued at USD 4.3 billion in 2023 and is poised to grow from USD 4.7 billion in 2024 to USD 9.49 billion by 2032, growing at a CAGR of 9.2% during the forecast period (2025-2032).

The demand for tankless water heaters is surging as consumers increasingly prioritize energy efficiency and sustainability. These innovative systems consume up to 34% less energy than traditional storage water heaters, positioning them as an attractive choice for environmentally conscious buyers. Their compact design makes them ideal for smaller homes, as they eliminate the need for bulky storage tanks by heating water on demand. Although they come with a higher initial cost, tankless models offer long-term savings, estimated at $100 to $200 annually on electricity bills, along with extended warranties and life spans. As consumers shift towards these eco-friendly solutions, the market for tankless water heaters is poised for significant growth in the coming years.

Top-down and bottom-up approaches were used to estimate and validate the size of the Global Tankless Water Heater market and to estimate the size of various other dependent submarkets. The research methodology used to estimate the market size includes the following details: The key players in the market were identified through secondary research, and their market shares in the respective regions were determined through primary and secondary research. This entire procedure includes the study of the annual and financial reports of the top market players and extensive interviews for key insights from industry leaders such as CEOs, VPs, directors, and marketing executives. All percentage shares split, and breakdowns were determined using secondary sources and verified through Primary sources. All possible parameters that affect the markets covered in this research study have been accounted for, viewed in extensive detail, verified through primary research, and analyzed to get the final quantitative and qualitative data.

Global Tankless Water Heater Market Segments Analysis

Global Tankless Water Heater Market is segmented by Product Type, Installation, Technology, Feature, Application, Flow Rate and region. Based on Product Type, the market is segmented into Electric and Gas. Based on Installation, the market is segmented into Indoor and Outdoor. Based on Technology, the market is segmented into Condensing Technology and Non-condensing Technology. Based on Feature, the market is segmented into Manual and Remote Control. Based on Application, the market is segmented into Residential and Commercial. Based on Flow Rate, the market is segmented into High and Low. Based on region, the market is segmented into North America, Europe, Asia Pacific, Latin America and Middle East & Africa.

Driver of the Global Tankless Water Heater Market

The Global Tankless Water Heater market is largely propelled by the remarkable energy efficiency these units offer. Unlike traditional tank heaters, tankless models heat water on demand, resulting in energy savings of approximately 24% to 34%. This efficiency appeals significantly to environmentally conscious consumers aiming to lower their utility bills, as it provides substantial long-term cost advantages. As a result, the increasing preference for energy-efficient solutions continues to stimulate market demand, reflecting a broader trend of prioritizing sustainable practices and cost-effective innovations among homeowners and businesses alike. This growing awareness is pivotal in shaping the future landscape of the tankless water heater industry.

Restraints in the Global Tankless Water Heater Market

The primary constraint in the Global Tankless Water Heater market is the higher installation costs associated with these systems compared to traditional water heaters. Though tankless models may offer long-term savings, their initial price tag can be substantially higher. Additionally, the installation process often necessitates alterations to existing electrical and plumbing systems, further increasing overall expenses. This elevated upfront investment may deter some consumers from choosing tankless options, ultimately hindering the potential for market expansion. Consequently, the financial implications of adopting tankless water heaters pose a significant challenge to wider acceptance and growth within the industry.

Market Trends of the Global Tankless Water Heater Market

The Global Tankless Water Heater market is witnessing a significant trend toward the incorporation of smart features, driven by the growing adoption of smart home technologies. Consumers are increasingly prioritizing convenience and energy efficiency, prompting a surge in demand for water heaters equipped with advanced functionalities such as temperature monitoring, smartphone controls, and Wi-Fi connectivity. This shift is indicative of a broader market transformation, where energy management and remote access to household appliances are becoming essential features. As smart technology gains traction, the popularity of tankless water heaters with these innovative capabilities is expected to continue rising, reshaping consumer preferences and industry standards.

Table of Contents

Introduction

• Objectives of the Study
• Scope of the Report
• Definitions

Research Methodology

• Information Procurement
• Secondary & Primary Data Methods
• Market Size Estimation
• Market Assumptions & Limitations

Executive Summary

• Global Market Outlook
• Supply & Demand Trend Analysis
• Segmental Opportunity Analysis

Market Dynamics & Outlook

• Market Overview
• Market Size
• Market Dynamics
  • Drivers & Opportunities
  • Restraints & Challenges
• Porters Analysis
  • Competitive rivalry
  • Threat of substitute
  • Bargaining power of buyers
  • Threat of new entrants
  • Bargaining power of suppliers

Key Market Insights

• Key Success Factors
• Degree of Competition
• Top Investment Pockets
• Market Ecosystem
• Market Attractiveness Index, 2024
• PESTEL Analysis
• Macro-Economic Indicators
• Value Chain Analysis
• Pricing Analysis

Global Tankless Water Heater Market Size by Product Type & CAGR (2025-2032)

• Market Overview
• Electric
• Gas

Global Tankless Water Heater Market Size by Installation & CAGR (2025-2032)

• Market Overview
• Indoor
• Outdoor

Global Tankless Water Heater Market Size by Technology & CAGR (2025-2032)

• Market Overview
• Condensing Technology
• Non-condensing Technology

Global Tankless Water Heater Market Size by Feature & CAGR (2025-2032)

• Market Overview
• Manual
• Remote Control

Global Tankless Water Heater Market Size by Application & CAGR (2025-2032)

• Market Overview
• Residential
• Commercial

Global Tankless Water Heater Market Size by Flow Rate & CAGR (2025-2032)

• Market Overview
• High
• Low

Global Tankless Water Heater Market Size & CAGR (2025-2032)

• North America (Product Type, Installation, Technology, Feature, Application, Flow Rate)
  • US
  • Canada
• Europe (Product Type, Installation, Technology, Feature, Application, Flow Rate)
  • Germany
  • Spain
  • France
  • UK
  • Italy
  • Rest of Europe
• Asia Pacific (Product Type, Installation, Technology, Feature, Application, Flow Rate)
  • China
  • India
  • Japan
  • South Korea
  • Rest of Asia-Pacific
• Latin America (Product Type, Installation, Technology, Feature, Application, Flow Rate)
  • Brazil
  • Rest of Latin America
• Middle East & Africa (Product Type, Installation, Technology, Feature, Application, Flow Rate)
  • GCC Countries
  • South Africa
  • Rest of Middle East & Africa

Competitive Intelligence

• Top 5 Player Comparison
• Market Positioning of Key Players, 2024
• Strategies Adopted by Key Market Players
• Recent Developments in the Market
• Company Market Share Analysis, 2024
• Company Profiles of All Key Players
  • Company Details
  • Product Portfolio Analysis
  • Company's Segmental Share Analysis
  • Revenue Y-O-Y Comparison (2022-2024)

Key Company Profiles

• Rheem Manufacturing Company (USA)
  • Company Overview
  • Business Segment Overview
  • Financial Updates
  • Key Developments
• A. O. Smith Corporation (USA)
  • Company Overview
  • Business Segment Overview
  • Financial Updates
  • Key Developments
• Navien, Inc. (South Korea)
  • Company Overview
  • Business Segment Overview
  • Financial Updates
  • Key Developments
• Rinnai Corporation (Japan)
  • Company Overview
  • Business Segment Overview
  • Financial Updates
  • Key Developments
• Bosch Thermotechnology (Germany)
  • Company Overview
  • Business Segment Overview
  • Financial Updates
  • Key Developments
• Noritz Corporation (Japan)
  • Company Overview
  • Business Segment Overview
  • Financial Updates
  • Key Developments
• Takagi Industrial Co., Ltd. (Japan)
  • Company Overview
  • Business Segment Overview
  • Financial Updates
  • Key Developments
• Eemax, Inc. (USA)
  • Company Overview
  • Business Segment Overview
  • Financial Updates
  • Key Developments
• Stiebel Eltron GmbH & Co. KG (Germany)
  • Company Overview
  • Business Segment Overview
  • Financial Updates
  • Key Developments
• Bradford White Corporation (USA)
  • Company Overview
  • Business Segment Overview
  • Financial Updates
  • Key Developments
• Eccotemp Systems LLC (USA)
  • Company Overview
  • Business Segment Overview
  • Financial Updates
  • Key Developments
• Titan (USA)
  • Company Overview
  • Business Segment Overview
  • Financial Updates
  • Key Developments
• Thermomax Ltd. (Ireland)
  • Company Overview
  • Business Segment Overview
  • Financial Updates
  • Key Developments
• Ariston Thermo Group (Italy)
  • Company Overview
  • Business Segment Overview
  • Financial Updates
  • Key Developments
• Vokera Ltd (UK)
  • Company Overview
  • Business Segment Overview
  • Financial Updates
  • Key Developments
• Chronomite Laboratories, Inc. (USA)
  • Company Overview
  • Business Segment Overview
  • Financial Updates
  • Key Developments
• Marey International LLC (Puerto Rico/USA)
  • Company Overview
  • Business Segment Overview
  • Financial Updates
  • Key Developments
• Hyundae Electronics Industries Co., Ltd. (South Korea)
  • Company Overview
  • Business Segment Overview
  • Financial Updates
  • Key Developments
• Ferroli S.p.A. (Italy)
  • Company Overview
  • Business Segment Overview
  • Financial Updates
  • Key Developments
• Paloma Industries, Ltd. (Japan)
  • Company Overview
  • Business Segment Overview
  • Financial Updates
  • Key Developments

Conclusion & Recommendations