Bosch Greenstar Gas-Fired Condensing Boilers

Bosch has a new line of Greenstar Gas-Fired Wall-Hung Condensing Boilers and they are all very efficient and simple to set and operate.  Space heating boiler for connection to a hot water tank with unsurpassed performance and control. With special insulation to ensure ultra quiet operation and the exclusive keypad safety lock feature to prevent unwanted tampering with heating controls, this unit is the ideal "green" upgrade for detached & terraced houses and is also suitable for apartments.

There are 5 different model Greenstar Boilers designed for space heating only and they are sized by thier BTU capacity. 

• Bosch Greenstar 57, (57.2K BTU), 98.7% efficiency
• Bosch Greenstar 79, (79.2K BTU), 98.7% efficiency
• Bosch Greenstar 100, (100.8K BTU), 98.5% efficiency
• Bosch Greenstar 131, (131.9K BTU), 97.5% efficiency
• Bosch Greenstar 151, (151.6K BTU), 96.8% efficiency

The energy-savings and environmental features are:

Aluminum-Silicon heat exchanger delivers high efficiency with low temperature applications

Low NOx emissions ahead of 2012 SCAQMD regulations

Simple, intelligent control options optimize efficiency and fuel consumption

Low electrical consumption when the boiler is in standby mode

Electronic ignition

Anti-cycle and modulation control

These Greenstar condensing space heating boilers can be used for either Natural Gas or Liquid Propane installations.   The heaters come preset for Natural Gas (NG), but can be converted to Liquid Propane (LP).  A gas conversion kit is included.

The Greenstar boilers come with a temperature control FW 200 that can either be mounted to the heater or mounted to the wall beside the heater.  This module allows the heater to be set for different temperatures, zones and the time of day the heater comes on and goes off.  The FW 200 control also comes with a temperature probe that goes to the outside and detects and monitors the outside temperature and then allows the heater to remember the coldest and warmest times of the day and year.

The Greenstar condensing space heating boilers are specifically designed for space heating only but can also be used for Domestic Hot Water (DHW) when they are piped to an indirect tank and using a pump, aquastat and check valves.

Greenstar Combi 100 & 151 Gas Fired Condensing Boilers

The New Bosch Greenstar Combi 100 (100K BTU) & Bosch Greenstar Combi 151 (151K BTU) Gas Fired Condensing Boilers are new to the American market but have been in use for years in Europe.  The combi 100 is 98.5% efficient as the combi 151 is 96.5% efficient.  The new Bosch Greenstar condensing boiler line is engineered to offer the ideal solution for residential heating and hot water needs at an affordable price, without compromising quality or fuel economy.

"Combi" (combination) unit with space heating and integrated water heating in one highly efficient, compact unit. With special insulation to ensure ultra quiet operation and the exclusive keypad safety lock feature to prevent unwanted tampering with heating controls, this unit is the ideal "green" unit.

Limited lifetime heat exchanger and 5-year parts & labor warranty

All models available as NG or LP

Special insulation ensures ultra-quiet operation

Compact dimensions and built-in frost protection offer flexibility for location of installation

ECO mode for energy saving fuel consumption

Exclusive safety feature - keypad safety lock prevents unwanted tampering with heating controls.

Each unit features an ASME approved Al-Si heat exchanger constructed of advanced Magnesium-Aluminum-Silicon alloy - offering increased flexibility versus traditional stainless steel. They are equipped with highly durable heating blocks that are corrosion resistant and designed to optimize clean burning combustion over an extra large surface area, which requires minimal servicing and reliance on spare parts during the boiler’s lifetime.  The Greenstar units come set for Natural Gas (NG) and there is a conversion kit that is included with the unit if it has to be converted to Liquid Propane (LP).

The Greenstar Combi units are designed for heating such as radiant floor heat or baseboard heating with multiple zones depending on the size of the unit and also for domestic hot water (DHW).  

The combi 100 unit besides being used for heating applications is also designed for DHW for 1 major application at a time - 72 degree rise at 2.4 gpm while the combi 151 could possibly do 2 applications at a time and will deliver - 72 degree rise at 4 gpm.

Depending on the size of your home and the heating and DHW applications you are looking for, you would need to get an HVAC or gas technician to size the unit properly as they would have to factor in,  size of home, insulation "R" factor, windows, etc..