Nefit (Bosch) TopLine HR 100 spare parts

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In brief

Instalpunt supplies 124 original parts for the Nefit (Bosch) TopLine HR 100, including fans, sensors, pressure sensors. Order online.

124Spare parts
66In stock
€7.06From
21Types
availableExploded view

Looking for parts for the Nefit (Bosch) TopLine HR 100 (boiler)? Below are all 124 original parts, grouped by part type, with the matching exploded view. Choose a type to jump straight to the right table.

View the interactive exploded view →

Quick left to the right part for the Nefit (Bosch) TopLine HR 100

Part	From	Delivery
Fan Nefit fan 100 kW 230V for TopLine	€453.01	In-stock items usually arrive within 3–5 working days, made-to-order items within 5–7 working days (a longer lead time is shown on the product page).
Pressure sensor Nefit pressure sensor with click connection for TopLine and ProLine etc.	€62.59	In-stock items usually arrive within 3–5 working days, made-to-order items within 5–7 working days (a longer lead time is shown on the product page).
Pump Nefit pump 25-85 130 UPMgeo for TopLine	€479.47	In-stock items usually arrive within 3–5 working days, made-to-order items within 5–7 working days (a longer lead time is shown on the product page).
Heat exchanger Nefit heat exchanger for Topline 50-100 kW	€3,135.73	In-stock items usually arrive within 3–5 working days, made-to-order items within 5–7 working days (a longer lead time is shown on the product page).
Burner control unit Nefit burner control unit UBA3 for EcomLine and TopLine	€428.71	In-stock items usually arrive within 3–5 working days, made-to-order items within 5–7 working days (a longer lead time is shown on the product page).
Display Nefit BC10 control panel for EcomLine and TopLine	€117.67	In-stock items usually arrive within 3–5 working days, made-to-order items within 5–7 working days (a longer lead time is shown on the product page).

Prices incl. VAT, taken directly from our checkout. Below is the complete parts list for this model.

Installer or self-employed engineer? Create a business account: prices excl. VAT and invoices in your company name.

Fans for the Nefit (Bosch) TopLine HR 100 (2) all Nefit (Bosch) fans →

Part	Item no. / mfr. no.	Price	Stock
Rewind refurbished fan for Bosch TopLine HR 100 (7101454)	8930173	€366.07	Made-to-order item	View & order
Nefit fan 100 kW 230V for TopLine	8026712 Mfr. no. 7101454	€453.01	In stock	View & order

Sensors for the Nefit (Bosch) TopLine HR 100 (1) all Nefit (Bosch) sensors →

Part	Item no. / mfr. no.	Price	Stock
Nefit safety sensor for TopLine	8026766 Mfr. no. 7101532	€48.55	In stock	View & order

Pressure sensors for the Nefit (Bosch) TopLine HR 100 (1) all Nefit (Bosch) pressure sensors →

Part	Item no. / mfr. no.	Price	Stock
Nefit pressure sensor with click connection for TopLine and ProLine etc.	8026706 Mfr. no. 8718600019	€62.59	In stock	View & order

Pumps for the Nefit (Bosch) TopLine HR 100 (1) all Nefit (Bosch) pumps →

Part	Item no. / mfr. no.	Price	Stock
Nefit pump 25-85 130 UPMgeo for TopLine	8020542 Mfr. no. 7736700081	€479.47	In stock	View & order

Heat exchangers for the Nefit (Bosch) TopLine HR 100 (1) all Nefit (Bosch) heat exchangers →

Part	Item no. / mfr. no.	Price	Stock
Nefit heat exchanger for Topline 50-100 kW	8028938 Mfr. no. 8718600269	€3,135.73	In stock	View & order

Gas valves and gas control for the Nefit (Bosch) TopLine HR 100 (3) all Nefit (Bosch) gas valves and gas control →

Part	Item no. / mfr. no.	Price	Stock
Nefit gas control valve E/LL 85-100kW	8029611 Mfr. no. 7736700352	€351.49	In stock	View & order
Nefit gas connection tap for cascade old number: 73960	8026745 Mfr. no. 7101512	€198.67	Made-to-order item	View & order
Nefit venturi E/LL 98kW for TopLine	8029496 Mfr. no. 8718600301	€250.51	Made-to-order item	View & order

PCBs and controls for the Nefit (Bosch) TopLine HR 100 (1) all Nefit (Bosch) PCBs and controls →

Part	Item no. / mfr. no.	Price	Stock
Nefit connection PCB old number: 73814 for EcomLine and TopLine	8028777 Mfr. no. 7099042	€133.33	In stock	View & order

Burner control units for the Nefit (Bosch) TopLine HR 100 (1) all Nefit (Bosch) burner control units →

Part	Item no. / mfr. no.	Price	Stock
Nefit burner control unit UBA3 for EcomLine and TopLine	8029199 Mfr. no. 8718600083	€428.71	In stock	View & order

Diverter valves and hydroblocks for the Nefit (Bosch) TopLine HR 100 (3) all Nefit (Bosch) diverter valves and hydroblocks →

Part	Item no. / mfr. no.	Price	Stock
Nefit 3-way valve set 5/4" 24V N.O. for TopLine	7900265 Mfr. no. 20373	€670.63	In stock	View & order
Nefit hydroblock flow single for TopLine	8027611 Mfr. no. 74547	€232.15	In stock	View & order
Nefit hydroblock flow combi for TopLine	8027612 Mfr. no. 74548	€333.67	Made-to-order item	View & order

Siphons and condensate drains for the Nefit (Bosch) TopLine HR 100 (3) all Nefit (Bosch) siphons and condensate drains →

Part	Item no. / mfr. no.	Price	Stock
Nefit siphon for TopLine (e.g. TopLine HR 70) 8718600611	8026722 Mfr. no. 8718600611	€26.95	In stock	View & order
Nefit flexible condensate drain for ProLine and TopLine	8027352 Mfr. no. 7101535	€24.79	In stock	View & order
Nefit condensate tray for Topline 45-100 kW (old number: 73930)	8026719 Mfr. no. 7101396	€92.83	In stock	View & order

Burners for the Nefit (Bosch) TopLine HR 100 (2) all Nefit (Bosch) burners →

Part	Item no. / mfr. no.	Price	Stock
Nefit burner cover old number: 73919	8026709 Mfr. no. 7101448	€119.83	In stock	View & order
Nefit burner for TopLine	8200015 Mfr. no. 8738901723	€327.19	In stock	View & order

Displays and controls for the Nefit (Bosch) TopLine HR 100 (3) all Nefit (Bosch) displays and controls →

Part	Item no. / mfr. no.	Price	Stock
Nefit BC10 control panel for EcomLine and TopLine	8029092 Mfr. no. 73692	€117.67	In stock	View & order
Nefit control panel	8026771 Mfr. no. 73909	€127.39	Made-to-order item	View & order
Nefit knob control thermostat for EcomLine and TopLine	8022805 Mfr. no. 38724	€64.75	Made-to-order item	View & order

Maintenance and service kits for the Nefit (Bosch) TopLine HR 100 (2) all Nefit (Bosch) maintenance and service kits →

Part	Item no. / mfr. no.	Price	Stock
Nefit ignition unit 50-100kW (service kit) for TopLine	80200188 Mfr. no. 8738901633	€126.31	In stock	View & order
Nefit gasket set F Topline I/II HR 50/70/100	81901152 Mfr. no. 8738901299	€60.43	In stock	View & order

Valves for the Nefit (Bosch) TopLine HR 100 (6) all Nefit (Bosch) valves →

Part	Item no. / mfr. no.	Price	Stock
Nefit safety relief valve 3 bar for TopLine	8026741 Mfr. no. 7099949	€43.15	In stock	View & order
Nefit automatic air vent >= 50 kW	8029647 Mfr. no. 8738900323	€48.55	In stock	View & order
Nefit quick air vent 3/8" old number: 73409	8045200 Mfr. no. 7098666	€48.55	In stock	View & order
Nefit fill/drain valve old number: 73959	8026744 Mfr. no. 7101516	€51.79	Made-to-order item	View & order
Nefit safety relief valve 4 bar for TopLine	7900630 Mfr. no. 7095595	€60.43	In stock	View & order
Nefit non-return valve connection group old number: 74551	8027610 Mfr. no. 7746900606	€63.67	Made-to-order item	View & order

Pressure gauges for the Nefit (Bosch) TopLine HR 100 (4) all Nefit (Bosch) pressure gauges →

Part	Item no. / mfr. no.	Price	Stock
Nefit pressure gauge 0-10 bar old number: 73958 for TopLine	8026743 Mfr. no. 7101506	€34.51	Made-to-order item	View & order
Nefit thermometer	8027616 Mfr. no. 73890	€65.83	Made-to-order item	View & order
Nefit thermometer sleeve blue	8029632 Mfr. no. 7746700421	€32.35	Made-to-order item	View & order
Nefit thermometer sleeve red	8029633 Mfr. no. 7746700422	€33.43	Made-to-order item	View & order

Electrical parts for the Nefit (Bosch) TopLine HR 100 (10) all Nefit (Bosch) electrical parts →

Part	Item no. / mfr. no.	Price	Stock
Nefit on/off switch old number: 73660	8029068 Mfr. no. 7099041	€19.39	In stock	View & order
Nefit transformer for e.g. SmartLine HRC 24 CW4 7101640	8029097 Mfr. no. 7101640	€57.19	In stock	View & order
Nefit fuse 5 AF/230V 10 pcs old number: 7099473 for TopLine and TrendLine etc.	8026767 Mfr. no. 8718601966	€44.23	In stock	View & order
Nefit terminal connector blue	8027316 Mfr. no. 73775	€29.11	In stock	View & order
Nefit connection terminal orange	8027318 Mfr. no. 73777	€36.67	Made-to-order item	View & order
Nefit connection terminal green	8027314 Mfr. no. 73773	€29.11	In stock	View & order
Nefit terminal connector grey	8027315 Mfr. no. 73774	€36.67	Made-to-order item	View & order
Nefit terminal connector red	8027317 Mfr. no. 73776	€36.67	Made-to-order item	View & order
Nefit terminal connector turquoise old number: 73772	8027313 Mfr. no. 7746700126	€36.67	Made-to-order item	View & order
Nefit fuse holder UBA 2 pcs for EcomLine and TopLine	8027194 Mfr. no. 7099468	€30.19	Made-to-order item	View & order

Cables and wiring harnesses for the Nefit (Bosch) TopLine HR 100 (6) all Nefit (Bosch) cables and wiring harnesses →

Part	Item no. / mfr. no.	Price	Stock
Nefit wiring harness 24V for 100kW old number: 73943 (TopLine)	8026730 Mfr. no. 7101472	€121.99	In stock	View & order
Nefit wiring harness 230V old number: 73945 for TopLine	8026732 Mfr. no. 7101478	€74.47	In stock	View & order
Nefit earth cable old number: 73947	8026734 Mfr. no. 7101474	€25.87	Made-to-order item	View & order
Nefit wiring harness switch old number: 73946 for TopLine	8026733 Mfr. no. 7101476	€33.43	Made-to-order item	View & order
Nefit connection lead 3x1.5 mm with angled plug black	8028788 Mfr. no. 7099044	€33.43	Made-to-order item	View & order
Nefit plug protector	8026735 Mfr. no. 73948	€24.79	Made-to-order item	View & order

Gaskets and seals for the Nefit (Bosch) TopLine HR 100 (20) all Nefit (Bosch) gaskets and seals →

Part	Item no. / mfr. no.	Price	Stock
Nefit burner gasket for TopLine	8026708 Mfr. no. 7101446	€42.07	In stock	View & order
Nefit condensate tray gasket for Topline 45-100 kW	8027409 Mfr. no. 7746900152	€20.47	In stock	View & order
Nefit siphon gasket per 5 pcs for EcomLine and TopLine	8029545 Mfr. no. 7100742	€24.79	In stock	View & order
Nefit lip ring DN80	8026750 Mfr. no. 8738901447	€11.83	In stock	View & order
Nefit lip seal 60 mm old number: 73563	8029037 Mfr. no. 7099686	€12.91	In stock	View & order
Nefit fan gasket old number: 73920 for TopLine	8026710 Mfr. no. 7101450	€20.47	In stock	View & order
Nefit lip seal 100mm	8026728 Mfr. no. 7736700056	€19.39	In stock	View & order
Nefit sealing ring glow plug 33 x 24 x 3.5 mm 10 pcs	8029003 Mfr. no. 73368S	€20.47	In stock	View & order
Nefit O-ring 9.92 x 2.62 mm 10 pcs	8027376 Mfr. no. 7101646	€28.03	In stock	View & order
Nefit lip seal 50 mm 5 pcs	8029024 Mfr. no. 7099058	€43.15	In stock	View & order
Nefit O-ring 36.09 x 3.53 mm 10 pcs old number: 73972	8026755 Mfr. no. 7101488	€34.51	In stock	View & order
Nefit sealing ring 10 pcs old number: 73969	8026777 Mfr. no. 7101482	€20.47	In stock	View & order
Nefit gasket 5 pcs for TopLine	8027454 Mfr. no. 7746900278	€19.39	In stock	View & order
Nefit sealing ring 54/7" 2 pcs	8027601 Mfr. no. 73992	€19.39	In stock	View & order
Nefit O-ring 18.72 x 2.62 mm (10 pcs)	8029234 Mfr. no. 8718601961	€17.23	In stock	View & order
Nefit sealing ring 44 x 32 x 3 mm	8029630 Mfr. no. 7746700417	€37.75	In stock	View & order
Nefit door seal rubber 73912 old number: 73912	8026703 Mfr. no. 7101382	€34.51	Made-to-order item	View & order
Nefit O-ring 23.47 x 2.62 mm 2 pcs old number: 73982	8026781 Mfr. no. 7101504	€25.87	Made-to-order item	View & order
Nefit O-ring 70 x 3 mm 2 pcs old number: 73983	8026761 Mfr. no. 7101416	€25.87	Made-to-order item	View & order
Nefit O-ring 9.19 x 2.62 mm	8029580 Mfr. no. 7101534	€47.47	Made-to-order item	View & order

Pipes, tubes and hoses for the Nefit (Bosch) TopLine HR 100 (12) all Nefit (Bosch) pipes, tubes and hoses →

Part	Item no. / mfr. no.	Price	Stock
Nefit condensate drain pipe	8026721 Mfr. no. 7101410	€24.79	In stock	View & order
Nefit TopLine flue connector Ø100mm incl. basket	0081340 Mfr. no. 7746901750	€124.15	In stock	View & order
Nefit condensate drain pipe old number: 73075 for TopLine	8027604 Mfr. no. 7101531	€29.11	In stock	View & order
Nefit flue adapter	8026725 Mfr. no. 73936	€46.39	In stock	View & order
Nefit flow/return pipe old number: 73950	8026737 Mfr. no. 7101438	€88.51	In stock	View & order
Nefit gas pipe for TopLine HR 100 7101466	8021005 Mfr. no. 7101466	€128.47	Made-to-order item	View & order
Nefit pipe three-way valve cylinder for TopLine	8027606 Mfr. no. 73077	€71.23	Made-to-order item	View & order
Nefit pipe cylinder connection group	8027607 Mfr. no. 73078	€71.23	Made-to-order item	View & order
Nefit pipe straight DN 35 mm	8027608 Mfr. no. 73079	€34.51	Made-to-order item	View & order
Nefit pipe appliance/three-way valve for TopLine	8027605 Mfr. no. 73076	€92.83	Made-to-order item	View & order
Nefit air intake pipe 100kW old number: 73926	8026715 Mfr. no. 7101462	€66.91	Made-to-order item	View & order
Nefit flue gas pipe old number: 73935	8026724 Mfr. no. 7101404	€64.75	Made-to-order item	View & order

Casing and panels for the Nefit (Bosch) TopLine HR 100 (9) all Nefit (Bosch) casing and panels →

Part	Item no. / mfr. no.	Price	Stock
Nefit condensate tray upper section (old number: 73934) for TopLine	8026723 Mfr. no. 7101402	€18.31	In stock	View & order
Nefit connection plate BC10	8029155 Mfr. no. 7746700160	€42.07	In stock	View & order
Nefit connection plate UBA	8029159 Mfr. no. 7746700161	€100.39	In stock	View & order
Nefit control panel cover old number: 73977	8026760 Mfr. no. 7101498	€110.11	Made-to-order item	View & order
Nefit door for e.g. TopLine HR 70 8718600178	8026770 Mfr. no. 8718600178	€246.19	Made-to-order item	View & order
Nefit control panel door for TopLine	8026701 Mfr. no. 73910	€58.27	Made-to-order item	View & order
Nefit door lock old number: 73911	8026702 Mfr. no. 7101384	€31.27	Made-to-order item	View & order
Nefit casing connection group	8029579 Mfr. no. 7101514	€326.11	Made-to-order item	View & order
Nefit transport foot left and right old number: 73951	8026738 Mfr. no. 7101392	€47.47	Made-to-order item	View & order

Fixing material for the Nefit (Bosch) TopLine HR 100 (20) all Nefit (Bosch) fixing material →

Part	Item no. / mfr. no.	Price	Stock
Nefit clamping spring 5 pcs for e.g. 9000i AquaPower Plus HRC30 CW6 7099402	8029125 Mfr. no. 7099402	€22.63	In stock	View & order
Nefit air vent clip old number: 73973	8026756 Mfr. no. 7101430	€18.31	In stock	View & order
Nefit clamping spring 4x2 pcs	8026769 Mfr. no. 7746700063	€22.63	In stock	View & order
Nefit clamping bracket set	8027410 Mfr. no. 7746900186	€21.55	In stock	View & order
Nefit retaining clip old number: 73974	8026757 Mfr. no. 7746700069	€21.55	In stock	View & order
Nefit screw M5 x 16 mm 5 pcs	8027462 Mfr. no. 7746900310	€19.39	In stock	View & order
Nefit screw M6 x 16 10 pcs old number: 73971	8026754 Mfr. no. 7101486	€29.11	Made-to-order item	View & order
Nefit screw 4.2 x 8.5 mm 10 pcs old number: 73988	8026763 Mfr. no. 7100748	€28.03	Made-to-order item	View & order
Nefit screw M5 10 pcs old number: 73572S	8029007 Mfr. no. 7099650	€24.79	Made-to-order item	View & order
Nefit terminal connector 3-pin PS grey	8029641 Mfr. no. 7747023985	€47.47	Made-to-order item	View & order
Nefit terminal connector 3-pin PZ violet	8029642 Mfr. no. 7747023986	€47.47	Made-to-order item	View & order
Nefit terminal connector 3-pin PH green	8029640 Mfr. no. 7747023983	€61.51	Made-to-order item	View & order
Nefit terminal connector 3-pin white	8029639 Mfr. no. 7747023981	€47.47	Made-to-order item	View & order
Nefit spacer old number: 73949	8026736 Mfr. no. 7101394	€32.35	Made-to-order item	View & order
Nefit flue mounting old number: 73907	8026700 Mfr. no. 7101398	€51.79	Made-to-order item	View & order
Nefit door mounting set old number: 73990	8026765 Mfr. no. 7101520	€53.95	Made-to-order item	View & order
Nefit flange gas control valve	8021027 Mfr. no. 8718600286	€51.79	Made-to-order item	View & order
Nefit heat exchanger holder left for TopLine	8020965 Mfr. no. 7101388	€57.19	Made-to-order item	View & order
Nefit wall bracket old number: 73965	8026749 Mfr. no. 7101386	€45.31	Made-to-order item	View & order
Nefit heat exchanger mounting bracket right old number: 73963 for TopLine	8026747 Mfr. no. 7101390	€57.19	Made-to-order item	View & order

Other parts for the Nefit (Bosch) TopLine HR 100 (13)

Part	Item no. / mfr. no.	Price	Stock
Nefit pipe grommet frame white	8024490 Mfr. no. 73449	€22.63	In stock	View & order
Nefit union nut 5 pcs	8024661 Mfr. no. 7099224	€34.51	In stock	View & order
Nefit pump swivel nut 1" old number: 73675 for TopLine	8029078 Mfr. no. 7099416	€18.31	In stock	View & order
Nefit motor section three-way valve Taconova 5/4" 24V for TopLine	8027108 Mfr. no. 20375	€584.23	In stock	View & order
Nefit CH connector	8027602 Mfr. no. 73080	€83.11	In stock	View & order
Nefit pressure gauge connector for TopLine	8027603 Mfr. no. 73081	€35.59	In stock	View & order
Nefit return connector single	8027613 Mfr. no. 74549	€244.03	In stock	View & order
Nefit lip seal DN150	8020761 Mfr. no. 7736700059	€35.59	Made-to-order item	View & order
Nefit return connection piece combi	8027614 Mfr. no. 74550	€296.95	Made-to-order item	View & order
Nefit sealing cap air inlet	8026729 Mfr. no. 73942	€32.35	Made-to-order item	View & order
Nefit body three-way valve 5/4" for TopLine	8025049 Mfr. no. 20374	€406.03	Made-to-order item	View & order
Nefit air inlet adapter 100 mm old number: 73938	8026727 Mfr. no. 7101412	€34.51	Made-to-order item	View & order
Nefit modules drawer old number: 73964	8026748 Mfr. no. 7101496	€118.75	Made-to-order item	View & order

Exploded views of the Nefit (Bosch) TopLine HR 100

Click an exploded view to enlarge it. The position numbers are shown next to each part.

Nefit (Bosch) TopLine HR 100 error codes

Is there a code on the display? For each code: what it means for this series, what you can check yourself and which part is usually needed.

Fault code on your Nefit (Bosch) TopLine HR 100? This is the part type involved

Common Nefit (Bosch) fault codes and the part type that is usually the cause; the parts for this model are listed above. All codes explained: Nefit (Bosch) fault codes.

Code	What is going on	Part type
0C 283	The boiler is preparing for a burner start. The fan and pump are activated.	Fans
0L 284	The gas control valve is activated.	Gas valves and gas control
0Y 276	The flow temperature sensor has measured a temperature higher than 95°C.	Sensors
0Y 277	The safety temperature sensor has measured a temperature higher than 95°C.	Sensors
0Y 285	The return temperature sensor has measured a temperature higher than 95°C.	Sensors
1A 316	The flue gas temperature sensor has measured an excessive temperature.	Sensors

For guidance only: the same code can have a different cause depending on the situation.

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Frequently asked questions

Which parts are available for the Nefit (Bosch) TopLine HR 100?

The catalogue lists 124 original parts for the Nefit (Bosch) TopLine HR 100, including fans, sensors, pressure sensors, pumps. All parts are listed above, grouped by type, with part number and price.

How much does a fan for the Nefit (Bosch) TopLine HR 100 cost?

The fans for this model cost €592.76 incl. VAT. Check the table "Fans" above for the right part number.

Are the parts for the Nefit (Bosch) TopLine HR 100 in stock?

66 of the 124 parts are in stock; shipping to EU countries from €12.95 (€16.95 for more distant countries), usually 3–5 working days. Parts marked "Made-to-order item" are ordered specially for you; the delivery time is shown on the product page.

How do I know which part I need for the Nefit (Bosch) TopLine HR 100?

Search for the part by part number or use the exploded view of the Nefit (Bosch) TopLine HR 100.

Are these original Nefit (Bosch) parts?

Yes. All 124 parts in this list are original manufacturer parts for the Nefit (Bosch) TopLine HR 100, delivered with the correct part number.

How much do parts for the Nefit (Bosch) TopLine HR 100 cost?

Parts for the Nefit (Bosch) TopLine HR 100 range from €7.06 to €4,037.86 incl. VAT. The exact price of each part is shown in the tables above.

Can I return a part?

As a consumer you have a 14-day right of withdrawal. You may unpack and inspect the part; do not install or connect it. For a part that has been installed, connected or damaged we deduct the diminished value, up to the full price for circuit boards.