PA-13A (Propane-Air 13A gas) adjusted to the calorific value of LNG by diluting propane-gas with air is very useful as the town-gas in a middle city. But the LPG vaporizer needs to supply PA-13A to houses. In this paper, a pilot plant of a LPG vaporizer using the wind as heat source was designed by considering the energy saving and the characteristics were tested. The vaporizer was designed as the tube bundling of 180 tubes, by assuming that the pool boiling phenomenon occurred in each tube. Each tube had 8 vertical fins and the height was 2 m. The temperature profiles of the tube surface were measured. The measured values of the temperature fairly well agreed with the calculated values and the validity of the design was confirmed. Although the deterioration of efficiency by the growth of frost layer around the vaporizer tube inevitable, it is applicable to supply the gas to a number of houses by setting a few of this vaporizer in parallel and using those alternatively.