Ternary excess molar enthalpies at T=298.15 K and P=101.3 kPa for the system of {1,2-dichloropropane+2-propanol+2-butanol} and their constituent binary systems {1,2-DCP+2-propanol}, {1,2-DCP+2-butanol}, and {2-propanol+2-butanol} have been measured over the whole composition range using an isothermal micro-calorimeter with flow-mixing cell. All of the binary and ternary systems, including three pseudobinary systems, show endothermic behavior except for the binary mixture {2-propanol+2-butanol}, which shows small exothermicity. The Redlich-Kister equation was used to correlate the binary HEm, ij data, and the Morris equation to correlate the ternary HEm, 123 data. Comparisons between the Morris and Radojkovi equations for the prediction of HEm, 123 have been also made. The experimental results have been qualitatively discussed in terms of self-association, isomeric effect and chain length among molecules.