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We examine the competition between the charge-density wave (CDW) instabilityand the excitonic condensate (EC) in spatially separated layers of electronsand holes. The CDW and the EC order parameters (OPs), described by twodifferent mechanisms and hence two different transition temperatures$T^{CDW}_c$ and $T^{EC}_c$, are self-consistently coupled by a microscopic meanfield theory. We discuss the results in our model specifically focusing on thetransition-metal dichalcogenides which are considered as the most typicalexamples of strongly coupled CDW/EC systems with atomic layer separations wherethe electronic energy scales are large with the critical temperatures in therange $T^{EC}_c \sim T^{CDW}_c \sim 100-200 K$. An important consequence ofthis is that the excitonic energy gap, hence the condensed free energy, varywith the layer separation resulting in a new type of force ${\cal F}_{EC}$. Wediscuss the possibility of this force as the possible driver of the structurallattice deformation observed in some TMDCs with a particular attention on the $1 {\it T}$-$TiSe_2$ below $200 K$.

CDW-Exciton Condensate Competition and a Condensate Driven Force