Bosch Combi Boiler – 116,700 BTU – Greenstar ZWB35-3

Bosch ZWB35-3 is a high-efficiency regular boiler built to handle the heating demands of larger homes. Designed for properties requiring strong and consistent performance, it delivers dependable comfort while keeping energy use low.

Offering a 120,000 BTU heating capacity, this boiler is ideal for multi-room or zoned heating systems. It runs on natural gas and uses condensing technology to improve heat recovery and efficiency. A modulating burner adjusts output based on demand, helping reduce fuel consumption and operating costs.

When properly installed and maintained, the unit typically lasts 12-15 years. Routine servicing, such as flushing and descaling, helps maintain efficiency and extend system life. With a 95% AFUE rating, the ZWB35-3 converts nearly all fuel into usable heat, providing excellent efficiency without compromising performance. Its advanced design minimizes heat loss, ensuring reliable operation throughout the heating season.

The boiler includes a 5-year parts warranty and a lifetime warranty on the heat exchanger. Purchases through HVAC Fixed also come with a free 1-year labour warranty, flexible financing options up to 20 years, and the option to add extended labour coverage for added protection.

Related Documents

• Bosch Greenstar Brochure
• greenstar_warranty