Bosch Combi Boiler – 91,000 BTU – Greenstar ZWB28-3A

Bosch ZWB28-3A is a high-efficiency regular boiler built to meet the heating and hot water needs of medium-sized homes. It delivers dependable performance while helping reduce energy usage and maintain year-round comfort.

Rated at 95,000 BTU heating capacity, this boiler provides sufficient heat for moderate household demands without unnecessary fuel waste. It runs on natural gas and uses condensing technology to maximize heat extraction, improving efficiency. A modulating burner fine-tunes output based on demand, preventing energy loss and improving indoor comfort.

The boiler typically lasts 12-15 years when properly installed and maintained. Routine servicing, including flushing and descaling, is key to preserving efficiency and durability.

With a 95% AFUE rating, the ZWB28-3A reflects Bosch’s reputation for efficient and long-lasting heating systems. By reclaiming heat that would normally escape through exhaust, the system lowers operating costs and supports environmentally responsible heating.

Model includes a 5-year parts warranty and a lifetime warranty on the heat exchanger. Purchasing through HVAC Fixed adds a free 1-year labour warranty, flexible financing options up to 20 years, and the option to extend labour coverage for extra security.

Related Documents

• Bosch Greenstar Brochure
• greenstar_warranty