In this article, we summarize the most important questions and answers about oldtimer and youngtimer A/C repair, A/C modernization, and conversion to R134a.

Why do most classic car A/C systems perform so poorly?

And how can you create modern comfort in a 50-year-old Mercedes — while still preserving the original character of the car?

In this article, we show how we rebuilt and modernised the air conditioning system of a Mercedes-Benz W114 using custom-engineered solutions, restoration-focused thinking, and a huge amount of hidden engineering work.