The work aims to build and characterize Magnetic Refrigeration System (MRS). Owing to the sustainability and efficiency challenges of conventional cooling technologies comes a demand for sustainable alternate cooling technology. Among numerous alternatives, MRS is emerging as a promising candidate due to its negligible global warming potential, zero ozone depletion and 30-60% Carnot efficiency. Magneto-caloric materials (MCM) are the core component of this technology due to their property heating and cooling on magnetization. The heating and cooling on demagnetizing solid refrigerant MCM are like the compression and expansion of gas refrigerants in a vapour compression refrigeration system. Many compounds like Gadolinium alloys, lanthanum alloys and so on are classified as MCM. The La-Fe-Co-Si group of MCM is abundant as it contains 60-70% iron. Its Curie temperature is tunable and works near ambient temperatures (15–25 °C). Therefore, the comb-shaped geometry of La-Fe-Co-Si MCM with an area-to-volume ratio of 4.5 is used in our experiment. The other component of MRS is the magnet, and the nested Halbach magnet array (1.5 T) is selected for the prototype. La-Fe-Co-Si group of MCM is prone to corrosion, limiting our choice of heat transfer fluid (HTF) to non-aqueous. A hydrocarbon heat transfer fluid was thus used to evaluate the MCM array's performance in this study. A multilayer Active Magnetic Regenerator (AMR) is built in which MCM blocks are cascaded with respective Curie temperatures (in °C) in the following order 10.9, 12.9, 14.9, 16.9, 18.9, 20.9, 24.9, and 26.9. A reciprocating system configuration is chosen for setup owing to robustness and low power consumption. From the study, we found that operating frequency and HTF flow rate affect the AMR's performance parameters like temperature span and cooling efficiency. For the operating frequency range of 2.8 mHz and 75 mHz, the temperature drop of 1.05 K and 0.34 K from ambient, and cooling capacity of 11 W and 2.94 W, respectively, are achieved for 0.5 lit/min of HTF flow rate. The study helped to find the parameters affecting the heat transfer between MCM and HTF, which consequently affects the system's performance. To improve the cooling efficieny of overall system, a modified prototype is designed and implementated.