The aim of this paper is to design analysis of Regular 190L household direct cool vertical evaporator refrigerator with refrigerant 134a. In this household refrigerator. The usable cabinet space is improved by 25~30 % with roll bond vertical evaporator by instead of conventional c or o type roll bond evaporator. This improvement in usable space is based on volume of existing evaporator ie freezer section of house hold direct cool refrigerator. The design finalization of cooling circuit and internal volume of vertical evaporator is done based on 43° no load pull down test and 32°C energy test. Based on 43°C pull down test , freezer section becomes warmer by approximately 9°C~12°C so it can be considered as refrigerator without freezer compartment. further extension this vertical evaporator, one perforated cover is added to this bare roll bond panel of vertical evaporator from customer safety and aesthetic point of view. And This vertical evaporator refrigerator with 1 perforated cover then compared with base line refrigerator. The energy improvement found with vertical evaporator refrigerator with 1 perforated cover when compared to base line refrigerator is 9~10 %.