Titania (TiO2) have been used as photocatalyst for water splitting and treatment applications because of its exceptional stability and photon detection capability. One way to obtain TiO2 coating is via solution precursor plasma spraying (SPPS) which uses liquid precursors injected into the plasma jet to form solid deposits onto a substrate. It is important to understand the thermodynamic properties of plasma as it plays a significant role during the heat and momentum transfer between solution droplets and plasma working gases. Hence, a numerical investigation using T&TWinner was conducted to understand the thermal transport properties of Ar+H2 working gases in the presence of different concentrations and feed rates of Ti(OC3H7)4, Ti(OC4H9)4, Ti(OC4H10)4 and TiN precursors used to deposit TiO2 coatings. Thermal conductivity (») and ability of heating factor (AHF) of Ar+H2 plasma working gases were observed to increase when TiO2 solution precursors were added. A peak that corresponds to the ionization of Ti atoms appeared at about 5,500 K. It was observed that the thermal conductivity and modified AHF were greatly influenced by the solution injection rate and its concentration. The higher the injection rate and concentration, the higher » and AHF of the working gases. Out of the four solution precursors, Ti(OC4H9)4 and Ti(OC4H10)4 displayed the highest » and AHF; this is due to higher number of hydrogen atoms dissociated and ionized. The viscosity of the plasma jet was affected and lowered by the presence of solution. The solution with the highest concentration (1M) injected at fastest injection rate (50 mL/min) showed the lowest viscosity of the plasma. The morphological characteristics of the coatings showed no visibility of melted splats suggesting that the AHF values seems not enough to melt the precipitated droplet particles.