Bosch vs Ecosmart Water Heaters
Updated February 23, 2026
Comparing Bosch and Ecosmart for Water Heaters — see how they stack up on price, warranty, certifications, and product range.
Side-by-Side Comparison
| Feature | Bosch | Ecosmart |
|---|---|---|
| Founded | Founded 1886 | Founded 2007 |
| Country | Germany | United States |
| Price Tier | premium | mid-range |
| Warranty | 5-year limited warranty on tankless water heaters; 6-year on electric models; varies by product | Limited lifetime warranty on heat exchanger; 5-year on electronics; 1-year on parts |
| Certifications | 3 certifications | 2 certifications |
About Bosch
Robert Bosch GmbH is a global engineering and technology leader founded in Stuttgart, Germany in 1886. Their Home Comfort division (US operations in Londonderry, New Hampshire) manufactures high-efficiency tankless water heaters, heat pump water heaters, electric point-of-use units, boilers, and geothermal heat pump systems. Bosch is known for German engineering precision, energy efficiency, and compact designs that save space while delivering powerful performance.
Known for: German-engineered tankless and point-of-use water heaters with compact designs and high energy efficiency
About Ecosmart
EcoSmart is a leading manufacturer of electric tankless water heaters based in Johnson City, Tennessee. Founded with a focus on energy efficiency and sustainability, EcoSmart's self-modulating technology adjusts energy output based on incoming water temperature and flow demand, ensuring you only heat water you need. Their compact, wall-mounted units have become some of the best-selling electric tankless water heaters on Amazon and at major retailers.
Known for: Best-selling electric tankless water heaters with patented self-modulating technology for maximum energy savings
Frequently Asked Questions
Is Bosch or Ecosmart better for water heaters?
Both are reputable brands. Bosch is positioned in the premium price tier, while Ecosmart is in the mid-range tier. Your choice depends on budget and specific feature needs.
Which brand has a better warranty?
Bosch offers 5-year limited warranty on tankless water heaters; 6-year on electric models; varies by product. Ecosmart offers Limited lifetime warranty on heat exchanger; 5-year on electronics; 1-year on parts.