Bosch Parts - Furnace & AC

Bosch parts are OEM replacement components for Bosch Greenstar condensing boilers, Bosch tankless water heaters, and Bosch HVAC equipment, covering the full range of serviceable assemblies from heat exchangers and gas valves to ignition electrodes, circulator pumps, and control boards. The Bosch parts category on SupplyHouse spans over 13,000 items including boiler parts, HVAC parts, and tankless water heater parts for Bosch and Buderus product lines. Bosch Greenstar wall-hung condensing boilers are approved for zero clearance to combustibles per ANSI/Z223.1/NFPA 54 and CAN/CGA B149.1, and replacement parts must be compatible with the specific boiler series and model. For service technicians working on Bosch Greenstar combi and heating boilers, using OEM Bosch replacement parts maintains factory combustion performance and warranty compliance.

Bosch Greenstar Boiler Parts

Bosch Greenstar boiler parts cover the primary serviceable components of the Greenstar condensing boiler series, including flat plate heat exchangers, gas valves, ignition electrode sets, circulator pumps, and control box assemblies. The Bosch Greenstar line is wall-hung, gas-fired, and condensing, with zero-clearance-to-combustibles approval for residential installations. Common service parts include the flat plate heat exchanger (part 87161082120, 18-plate configuration) and electrode sets (part 87081070200), both listed on SupplyHouse. Parts must be matched to the specific Greenstar model, as combi boiler configurations (ZWB series) differ from heating-only boiler configurations (ZBR series) in their hydraulic block and pipe assemblies.

Bosch Tankless Water Heater Parts

Bosch tankless water heater parts cover replacement components for Bosch gas and propane tankless units, including heat exchangers, water valves, gas valves, control boards, and hydrogenerators. Bosch is one of the largest manufacturers of tankless gas water heaters worldwide per bosch-thermotechnology.us, and parts availability spans both current and legacy Bosch tankless models. Selecting the correct tankless part requires the full unit model number, as gas valve configurations differ between natural gas and propane models. The SupplyHouse Boiler Parts Finder Tool supports model-number-based parts lookup for Bosch tankless units.

Bosch HVAC Parts

Bosch HVAC parts cover replacement components for Bosch heat pump systems, Bosch air-to-air split systems, and Bosch controls, including motors, sensors, and control accessories. The Bosch HVAC parts category on SupplyHouse includes over 9,400 items spanning heat pump system parts and controls. Bosch offers water-to-water, water-to-air, and air-to-air heat pump configurations through its Bosch and FHP product lines per bosch-thermotechnology.us product documentation. Motor replacement parts within the HVAC category are model-specific; confirming the unit model number before ordering prevents mismatched component specifications.

Bosch Boiler Cleaning and Maintenance Parts

Bosch boiler cleaning and maintenance parts include combustion door seals, automatic air vents, and Greenstar cleaning tools required for routine annual service on Bosch condensing boilers. The Greenstar cleaning tool kit (part 7719002502) is a five-pack of tools listed on SupplyHouse designed for in-situ heat exchanger cleaning during scheduled maintenance. Combustion door seals are service-wear items that degrade from repeated thermal cycling and are typically replaced during annual service on boilers over five years old. Keeping maintenance consumables stocked reduces return-visit frequency on annual service routes.

How to Choose Bosch Replacement Parts

The model number of the Bosch unit is the non-negotiable starting point for every parts order. Bosch Greenstar combi boilers (ZWB series) and heating-only boilers (ZBR series) share many external features but use different hydraulic block assemblies, pipe configurations, and in some cases different gas valve versions. The SupplyHouse Boiler Parts Finder Tool accepts the unit model number and returns the compatible parts list for that specific configuration.

For Bosch Greenstar boiler parts, cross-referencing the part number against the spare parts diagram in the Bosch Greenstar installation and service manual is the most reliable confirmation step before ordering. Bosch publishes spare parts diagrams for Greenstar boilers, Bosch tankless units, and Bosch HVAC systems through the Parts Diagrams section at bosch-thermotechnology.us.

Fuel type matters for gas valve selection. Bosch tankless water heater gas valves differ between natural gas and propane configurations and are not field-convertible without the correct valve and orifice set. Confirming the fuel type on the unit nameplate before ordering a gas valve prevents a non-functional installation.

For anyone asking how to find Bosch boiler parts by model number: the SupplyHouse Boiler Parts Finder Tool at supplyhouse.com accepts any Bosch Greenstar model number and generates a compatible parts list. Bosch also provides spare parts diagrams organized by boiler group (burner/heat exchanger, gas valve, pipes, control box, and hydraulic block) through their technical support documentation at bosch-thermotechnology.us.

FAQs

How do I find the correct Bosch Greenstar boiler part number?
The correct Bosch Greenstar boiler part number is found by entering the unit model number into the SupplyHouse Boiler Parts Finder Tool, or by consulting the spare parts diagram published by Bosch in the Greenstar installation and service documentation at bosch-thermotechnology.us. Bosch organizes spare parts by groups including burner/heat exchanger, gas valve, pipes, control box, and hydraulic block, with each group listed by part number.

What is the difference between Bosch Greenstar combi boiler parts and heating boiler parts?
Bosch Greenstar combi boiler parts (ZWB series) and heating boiler parts (ZBR series) differ primarily in the hydraulic block assembly and pipe configuration, as combi boilers include a domestic hot water circuit that heating-only boilers do not. Per Bosch spare parts documentation, hydraulic block and pipe assemblies are listed separately for combi (ZWB) and heating (ZBR) configurations. Burner, heat exchanger, gas valve, and control box parts may overlap between series but must be confirmed by model number.

Are Bosch tankless water heater parts compatible between natural gas and propane models?
Bosch tankless water heater gas valves and orifices are not compatible between natural gas and propane configurations and are not field-interchangeable without the correct model-specific components. Fuel type is specified on the unit nameplate and must be confirmed before ordering gas-side replacement parts. Other parts such as heat exchangers, water valves, and control boards may be shared across fuel types depending on the model; model number verification is required.

What Bosch boiler parts are considered routine service consumables?
Routine service consumables for Bosch Greenstar condensing boilers include combustion door seals, ignition electrodes, and automatic air vents, which degrade from thermal cycling and heat exposure over normal operating life. Electrode sets and door seals are typically addressed during annual service on boilers over five years of age. The Greenstar cleaning tool kit supports in-situ heat exchanger cleaning as part of scheduled maintenance.

Where can I find Bosch spare parts diagrams for Greenstar boilers?
Bosch spare parts diagrams for Greenstar boilers are available through the Parts Diagrams section of the Bosch Home Comfort technical support portal at bosch-thermotechnology.us. Diagrams are organized by product category including gas and oil boilers, water heating systems, and heat pump systems, with spare parts tables listing part numbers by boiler group and component position.