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.


Terms and Conditions

Mr Combi Sales Ltd. does not store credit card details and does not share customer details with any third parties.

DVDs are batch tested to ensure their operation, please ensure your equipment can play DVD video and DVD data discs. In compliance with the law, DVD discs are only subject to a refund if the seal is intact.


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 & Multimeter 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.


Wiring & Controls DVD

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

£40.00 each including P&P (no VAT)

Basic Fault Finding & Multimeter DVD

Two 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.

£10.00 each including P&P (no VAT)


Get all three DVDs for only £80 instead of £90. We’ll also throw in an Anton Chart!


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 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!

£65.00 each including P&P (no VAT)


Kewtech Loopcheck 107 Socket Tester

After being inserted in to a socket, the 107 will automatically run a wiring check, green LEDs will light and a continuous tone will indicate a satisfactory result. Any faults will be highlighted by red and orange LEDs and a warble tone. The LEDs are positioned to represent the polarity of the pins, this gives another quick visual indication of where the fault lies. Having determined the socket polarity is good, the tester will then test for the quality of the earth loop, this test is conducted at mains frequency. One of three different colour LEDs will light indicating the condition of the earth loop return path.

The Loopcheck 107 also has the ability to check for the correct polarity of the mains supply. If this is wrong then a very hazardous situation exists. By touching the left hand touch pad the correct polarity of the mains supply is verified. The right-hand test button puts out a measured tripping current to check the operation of 30mA RCDs.

This is a very easy to use tool which we highly recommend for electrical fault finding


£50.00 each including P&P (no VAT)


Volt Pen

This Volt Pen is a must for every job, Safety First! It detects 90-1000V(AC) with a buzzer and red light and also has a torch. Powered by an AAA battery (supplied). For non-contact detection of AC voltage at socket outlets, flex and cable.

£10.00 each including P&P (no VAT)


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.

£5.00 each including P&P (no VAT)


Laser Thermometer

This laser thermometer is an easy way to balance rads, check flow & returns all done without getting burnt! Find hot pipes in walls and under concrete floors and will even measure water.

Simple to use – ready to go.

£40.00 each including P&P (no VAT)


Pressure Gauge

We have a problem with the expansion vessel, it rises too much from 1.2 to 3bar. 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 Schroeder valve. Display in PSI.

£10.00 each including P&P (no VAT)