Thermistor
Thermistors, or NTC sensors, measure water temperature in gas boilers and help control the heating cycle. We stock a wide range of replacement thermistors for popular boiler brands, including Worcester, Ideal, Baxi and Glowworm. Whether you need a DHW thermistor, a flow sensor or a heat exchanger probe, you will find it in this category. Our technical team checks the fitment of every part before it is listed, so you can order with confidence. In-stock orders placed by 4pm Mon–Fri (10:30am Sat) are despatched the same day. We offer 30-day returns on most items. If you are looking for an obsolete or hard-to-find thermistor, our Doncaster-based team can help source it. Visit our trade counter at Kirk Sandall Industrial Estate or call 01302 279234 for advice.
Prices and stock shown where we hold the part. Where it says Call for price, call us and we'll check stock, or a replacement if the part is no longer made.
Showing 1–24 of 1,217 parts

500590
Halstead: Halstead Thermistor Assembly 10 Ohm 500590
£60.58
inc. VAT · £50.48 ex. VAT
Available to order · 1-2 working days
5114747
Baxi: Baxi 5114747 NTC Sensor
£30.00
inc. VAT · £25.00 ex. VAT
In stock
720788201
Baxi: Baxi 720788201 Potterton & Main Hall Effect Sensor
£52.92
inc. VAT · £44.10 ex. VAT
In stock
7671970
Baxi: Baxi 7671970 Potterton Red Flow Temperature Thermistor
£19.09
inc. VAT · £15.91 ex. VAT
In stock
87161423840
Worcester Bosch: Worcester Bosch Central Heating Sensor PPS 87161423840
£29.59
inc. VAT · £24.66 ex. VAT
In stock
87161066880
Worcester Bosch: Worcester Bosch Control Sensor 87161066880
£42.26
inc. VAT · £35.22 ex. VAT
In stock
S5704200
Glow-worm: Glow-worm Domestic Hot Water Sensor GLOWWORMS5704200
£30.00
inc. VAT · £25.00 ex. VAT
In stock
S5739800
Glow-worm: Glowworm & Saunier Duval S5739800 Temperature Sensor
£70.56
inc. VAT · £58.80 ex. VAT
In stock
D003200152
Heatline: Heatline NTC sensor D003200152
£52.26
inc. VAT · £43.55 ex. VAT
In stock
170917
Ideal: Ideal 170917 Thermistor Boiler Control Kit
£36.00
inc. VAT · £30.00 ex. VAT
In stock
175594
Ideal: Ideal 175594 Thermistor - No Flow
£14.54
inc. VAT · £12.12 ex. VAT
In stock
87161423020
Worcester Bosch: Worcester Bosch DHW NTC Thermistor 87161423020
£19.51
inc. VAT · £16.26 ex. VAT
In stock
005001
Ideal: Ideal Thermistor 005001
£27.83
inc. VAT · £23.19 ex. VAT
Available to order · 1-2 working days
0020059717
Vaillant: Vaillant 0020059717 Sensor (water pressure)
£30.00
inc. VAT · £25.00 ex. VAT
In stock
193592
Vaillant: Vaillant 193592 Sensor NTC (CH flow/CH return)
£41.16
inc. VAT · £34.30 ex. VAT
In stock
252805
Vaillant: Vaillant 252805 Sensor - NTC
£72.00
inc. VAT · £60.00 ex. VAT
In stock
87145000870
Worcester Bosch: Worcester Bosch Temperature Sensor 87145000870
£78.49
inc. VAT · £65.41 ex. VAT
In stock
990686-01
Ariston: Ariston 990686-01 Temperature Sensor Probe C/w Clip
£18.00
inc. VAT · £15.00 ex. VAT
In stock
995319
Ariston: Ariston Fan Cable and Sensor Microcombi 23 & 27 995319
£22.52
inc. VAT · £18.77 ex. VAT
In stock
720061801
Baxi: Baxi Hall Effect Sensor Assembly 720061801
£34.91
inc. VAT · £29.09 ex. VAT
In stock
801722
Glow-worm: Glow-worm Thermistor Sensor CXI HXI SXI GLOWWORM801722
£35.28
inc. VAT · £29.40 ex. VAT
In stock
87145000290
Worcester Bosch: Worcester Bosch Temperature Sensor 87145000290
£19.24
inc. VAT · £16.03 ex. VAT
Available to order · 1-2 working days
87145000540
Worcester Bosch: Worcester Bosch Temperature Sensor 87145000540
£55.32
inc. VAT · £46.10 ex. VAT
Available to order · 1-2 working days
87160108090
Worcester Bosch: Worcester Bosch Temperature Sensor 87160108090
£10.40
inc. VAT · £8.67 ex. VAT
Available to order · 1-2 working days