Nonisothermal chemical oscillators are poorly studied systems because chemical oscillations are conventionally studied under isothermal conditions. Coupling chemical reactions with heat generation and removal in a nonisothermal oscillatory system can lead to a highly nontrivial nonlinear dynamic behavior. For the current study we considered the three-variable Oregonator model with the temperature incorporated as a variable (not a parameter) thus adding an energy balance to the set of equations. The effect of the temperature on reaction rates is included through the temperature-dependent reaction rate coefficients (Arrhenius law). To model continuous operation in a lab environment, the system was subjected to external forcing through the coolant temperature and infrared irradiation. By conducting numerical simulations and parametric studies, we have found that the system is capable of resonant behavior exhibiting induced oscillations. Our findings indicate that an external source of heat (e.g., via an infrared light emission diode) can be used to induce a Hopf bifurcation under resonant conditions in an experimental Belousov–Zhabotinsky reactor.