Welcome to the Mr Combi Shop. Here you can pay for places on the one day training course, buy DVDs or other spares and tools.

Payment is taken through PayPal, you can pay using your own credit or debit card, a PayPal account is not required. Goods will be sent out as soon as possible.

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Shopping Trolley

Any purchases you make will appear here. Once you are finished, click the button to checkout.


Course Booking

If you have completed an application form you can pay for the Fault Finding & Multimeters or Wiring & Controls courses here.

Unfortunately no credit or refunds can be offered for students who fail to turn up to a booked course.


Single course booking £150.00 each (no VAT)

Both courses booking £250.00 each SAVE £50 (no VAT)

For companies wishing to send more than 8 students at £130.00 each (no VAT), please email for booking dates, conditions and payment.


Fault Finding, Testing & Multimeters DVD

New for 2016

Two disc set, find out more on the DVDs page.

£40.00 each including P&P (no VAT)

Wiring & Controls


Four disc set, find out more on the DVDs page.

£40.00 each including P&P (no VAT)

Gas Flue Analyser DVD

Two disc set, find out more on the DVDs page.

£20.00 each including P&P (no VAT)


Get all three DVDs and the Book of Wiring for only £100, saving you £40. We’ll also throw in an Anton Chart!


Book of Wiring

Our new book is an excellent reference for you to use on Danfoss and Honeywell controls.

  • 90 pages of technical info
  • Handy A5 size
  • Full colour diagrams
  • High quality paper
  • Wire bound

Visit the book of wiring page to find out more.

Book of Wiring

£40.00 each including P&P (no VAT)


Anton Chart

After you analyse a boiler you can see and show the customer HOW the appliance is performing and what action to take. RED – shut down, Orange – service, etc. Printed on flexi-plastic so it is totally water resistant. You need this chart!

£2.00 each including P&P (no VAT)


Draper Expert Multimeter

Boilers have lots of components, most can be measured in Ohms such as pumps, fans, gas valves, stats, thermistors and more. You need an easy multimeter to test the different values. This Draper is just right, easy to read with a large display and a back light.

It also comes with a temperature probe, normally only found on expensive meters. Now you can balance rads and set up water temps/flow according to spec. Easy!

  • Large-digit 4,000 count LCD display
  • Illuminated display
  • Data hold, relative hold
  • Auto power off
  • Rubber bump cover with stand
  • Water probe and balancing rads and flow / return pipes
  • Hz % setting

£65.00 each including P&P (no VAT)


Extech EX330 Multimeter

This Extech auto ranging digital multimeter has 12 functions, 0.5% basic accuracy and measures AC/DC voltage, current, resistance, capacitance, frequency, temperature, duty cycle, and diode/continuity with a buzzer.

  • Built-in non-contact AC voltage detector (NCV) with red LED indicator and audible beeper
  • Large-digit 4,000 count LCD display
  • Max hold, data hold, relative hold
  • Auto power off
  • Type K temperature measurements
  • Water probe and balancing rads and flow / return pipes
  • Hz % setting

£45.00 each including P&P (no VAT)


Tool Bundle

HT Lead Ignition Spark Tester

Use the spark tester to see if the spark generator is working. It fits lots of Baxi, Potterton, Vaillant and many more makes of condensing boilers.


Schrader Valve Removal Tool

Many expansion vessels are replaced unnecessarily because water comes out of the valve, the diaphragm may not be damaged just the valve. This handy tool can be used to remove the faulty valve (not supplied).


Pressure Gauge

We have a problem with the expansion vessel, it rises too much from 1.2 to 3bar (17-46 PSI). The gauge on a foot pump is not accurate enough so this slim tyre gauge comes in very handy. It is angled at 135° to get into most places to test the Schrader valve. Display in PSI.

All three tools for £16.00 including P&P (no VAT)

Currently out of stock, back soon.