Flow-calorimetric measurements of excess enthalpies at 298.15 K are reported for 17 mixtures of (an alcohol + an ether). The alcohol is methanol, ethanol, propan-1-ol, or heptan-1-ol; the ether is butyl ether, methyl butyl ether, diethylether, 3,6-dioxaoctane, or 2,5,8-trioxanonane. The results indicate that interactions between alcohol and ether which are a consequence of the interactions between the hydroxyl and the oxygen groups increase almost linearly with the surface fraction of oxygen in the ether molecule. These interactions are more important in the case of short-chain alcohols.