Bosch Heat only Boiler – 100,800 BTU – Greenstar 100

Greenstar 100 Regular Boiler is an efficient and dependable heating system built for homes that already use a hot water cylinder. It’s well suited for households with higher hot water needs, providing strong heating performance while keeping energy use low.

Rated at 100,000 BTU heating capacity, this boiler is ideal for medium to large properties that require steady, reliable heat. It runs on natural gas and uses condensing technology to maximize efficiency. The modulating burner automatically adjusts heat output, ensuring comfort without unnecessary energy loss.

With a high 94% AFUE rating, the Greenstar 100 helps reduce heating costs while maintaining consistent indoor temperatures. Its smart design ensures energy is only used when needed, making it a practical choice for efficiency-focused homeowners.

The Greenstar 100 includes a 5-year parts warranty and a lifetime heat exchanger warranty. Purchasing through HVAC Fixed also provides a free 1-year labor warranty, flexible financing from 1 to 20 years, and optional extended labor coverage for added security.

The boiler typically lasts 12–15 years when properly installed and maintained. Regular servicing, including cleaning and descaling, helps preserve performance over time.

Related Documents

• Bosch Greenstar Brochure
• greenstar_warranty