"Expensive Parts"

Ive had other so called top brand analysers that cost a fortune to service. This is why i chose TPI this time around as they are somewhat cheaper. The analysers are ok but if need any parts, they are ridiculously priced. I have just ben charged £30 plus £10 postage for 2 plastic filters and a 10 pack of paper filters. This is absoultely absurd. You could have put these filters in an envelope and mailed it for £2 at the most. Doesnt matter which company you choose, these analysers are a total rip off!

"Too Expensive service "

I just got a quote for service Dc710 tester for £174 + delivery + VAT.
I can but brand new for £299.95 + VAT.
I think something went wrong with you service prices. I using your testers from the begging but I think it is time for a change now.

"TPI are my analyser if choice"

TPI are my analyser if choice, I have been using them for the last 15-years, I’ve now moved onto the new DC710 analyser with smart app that I use via an iPad, I also use the smart probes, I’m so happy with the tpi kit, I use the mini gas sniffer too. Never had an issue with any tpi product, the calibration price is really fair too. I’m definitely going to be sticking with tpi and also recommending them to other gas engineers. Keep up the good work.