Tjernlund Products offers a rooftop chimney fan that solves draft and exhaust problems.
Tjernlund Products offers a rooftop chimney fan that solves draft and exhaust problems. RT-Series inducers are available with an optional constant operating pressure control. The COP control delivers precise draft or exhaust by modulating fan speed to maintain a constant negative pressure within a vent or exhaust system as draft requirements or exhaust loads change. The RT-Series fans have a clamshell design (separate base plate and fan assembly are hinged) to facilitate installation.