Easily create CP12 certificates Quickly and easily create CP12 forms. eHeating automatically picks up customer details. Reprint Gas Certificates at the click of a button, there's no need to write them out again. Automatic CP14 certificates eHeating automatically picks up customer details. When creating your CP12 certificate, eHeating will automcatically create a CP14 certificate, reducing your work-load. Reduce your stationery costs eHeating do not charge for CP12 or CP14 stationery Print unlimited numbers of certificates off at no extra cost.