In this experimental work, the performance evaluation of North wall insulated greenhouse dryer under natural convection mode in no-load conditions has been done in two different cases. The experimental percentage of uncertainty was found 18.91; in which 18.5 was internal and 0.4 was external uncertainty. The uncertainty analysis signifies that the observed data was precise adequate to determine the performance of NWIGHD. Result indicates that NWIGHD with solar collector was found to be most effective for drying as compared to earlier developed greenhouse dryers. It gives 65.2 °C as higher inside room temperature for greenhouse and 4.4% as lower inside room relative humidity for greenhouse during the experiment which is desirable drying condition for most of the fruit and vegetable. The selection of suitable crop for drying can be done by analysing this article’s result. The radiation losses through the north wall were reduced with the help of reflector and the maximum utilisation of solar radiation was achieved. The thermal losses were also reduced by making the north wall insulated with the help of Thermocol sheet. Hence, the NWIGHD have potential to enhance the drying rate and reduce the payback period.