3.1 Multifidelity modeling of a potential energy surface for hindered rotation along a π-bonded alcohol-furan dimer Alcohols and furans serve as prevalent solvents and fuels. Their thermochemical properties are therefore of high scientific and technical importance. Dimers of alcohols and furans show interesting bonding patterns, preferring OH-bonding to small polar molecules, π-bonds to larger alcohols or both bonds being equally stable. Dimers of methanol and different furan derivates have been thoroughly investigated within the international Goebench challenge. Subtle influences on potential and zero-point energies affected the order of conformations (OH-or π-bonded), and a crucial role devolved on anharmonicity. We recently reconsidered the intermolecular HR of methanol against 2-methyl furan in a π-bonded dimer. This system lacks detailed experimental data on the conformational order, but high-level computations are available. For this HR, we here show the first basic capabilites of our MuFi approach.