Webasto Thermo Top Evo 5 vs. Evo 5 Plus

I called today in the workshop to ask for heating for my Audi A4 B8 Avant 2.0TDI. I actually wanted to have the Evo5 Plus, but I was told that it only works in the partial load or full load range. The normal Evo5 supposedly regulates itself individually and adapts to the requirements, thus being more efficient and at the same time more economical. I’m not quite sure which one to take now, according to the homepage of Webasto reads the m.M.n. but quite different:Wori n is the difference between a Thermo Top Evo 5 and a Thermo Top Evo 5+? Both models heat with an output of 5.0 kW. Due to the optimized control of the coolant circuit, the Thermo Top 5+ results in a significantly improved heat input in the passenger interior and thus an increase of up to 30%! With a Thermo Top 5+, your customers enjoy the pleasant heat much faster than with a Thermo Top 5! ps I would be grateful.