  The trinification model is an interesting extension of the Standard Model
based on the gauge group $SU(3)_C\times SU(3)_L\times SU(3)_R$. It naturally
explains parity violation as a result of spontaneous symmetry breaking, and the
observed fermion masses and mixings can be reproduced using only a few
parameters. We study the low-energy phenomenology of the trinification model in
order to compare its predictions to experiment. To this end, we construct a
low-energy effective field theory, thereby reducing the number of particles and
free parameters that need to be studied. We constrain the model parameters
using limits from new-particle searches as well as precision measurements. The
scalar sector of the model allows for various phenomenological scenarios, such
as the presence of a light fermiophobic scalar in addition to a
Standard-Model-like Higgs, or a degenerate (twin) Higgs state at 126 GeV. We
show how a measurement of the Higgs couplings can be used to distinguish such
scenarios from the Standard Model. We find that the trinification model
predicts that several new scalar particles have masses in the
$\mathcal{O}\left(100\text{ GeV}\right)$ range. Moreover, large regions of the
parameter space lead to measurable deviations from Standard-Model predictions
of the Higgs couplings. Hence the trinification model awaits crucial tests at
the Large Hadron Collider in the coming years.
