1. A computer program product for estimating install time, the computer program product comprising: a computer readable storage medium having computer usable program code embodied therewith, the computer usable program code configured to: identify a timing parameter that influences an install time interval for installing a product on a plurality of sample computing machines in a test environment in accordance with an installation configuration option; identify a set of timing parameter test operations to determine test values of the timing parameter of the plurality of sample computing machines; for each of the plurality of sample computing machines in the test environment, determine the test value of the timing parameter for the sample computing machine based, at least in part, on the set of timing parameter test operations; determine a test value of the install time for the sample computing machine based, at least in part, on installation operations that are performed in accordance with the installation configuration option; determine a timing coefficient for the timing parameter based on the test values of the timing parameter and the test values of the install time, both of which were determined for each of the plurality of sample computing machines; record the timing coefficient and the installation configuration option, wherein the install time interval for installing the product in accordance with the installation configuration option in a non-test operating environment is estimated based on the timing coefficient and the installation configuration option.