Our brochures are in .pdf structure and available to read through digitally, if you prefer to a printed duplicate please don't be reluctant to get in touch with our friendly customer support team. R290 can attain superior performance levels having a+++ Electrical power rankings through the Haier Heat Pump range. https://purethermal.co.uk/media-news/q4-launch-lithium-large-capacity-r290-ashp-from-pure-thermal-and-enerblue/