When it comes to heating and cooling, a furnace or air handler is only as good as the controls telling it what to do. If your system can’t efficiently route air where it’s needed, you’re wasting energy and losing comfort. iO HVAC Controls specializes in the traffic control of the HVAC world.
Whether you’re an installer looking to solve a ‘missing wire’ crisis with a wireless relay, a building manager trying to eliminate a bulky bypass duct using advanced ESP zoning, or a homeowner trying to bring fresh, clean air into a tightly sealed house, iO makes the hardware that solves the problem.
Wireless Relays
The iO-WR and iO-WRP are the perfect solution when you can’t run wire or existing wires have been cut or damaged. Both relays are rated for 1 Amp per channel, operate at a frequency of 915 MHz, 24VAC, 2.8VA with a base transceiver (3 receive / 1 send channels) and a satellite transceiver ( 1 receive / 3 send channels). The difference in receivers lie in their ranges.

iO-WR
The iO-WR can reach ranges of up to 100 feet, it is suitable for application in a typical residential installation such as replacing a broken wire running form a basement air handler up out to the backyard patio. 100 feet is plenty to pierce through standard residential wood framing and exterior siding.

iO-WRP
The iO-WRP can reach ranges of up to 1/4 mile. This makes it the perfect solution for heavy commercial building materials such as cinder block, concrete, or corrugated metal roofs, or if the outdoor unit is on top of a commercial building several floors up. The “Plus” version uses a much stronger signal to punch through those dense architectural barriers.
Zoning panels
ZP3-ESP Zoning Panel
The ZP3-ESP is a 3 zone universal zone control panel that includes integrated EPS static pressure control logic designed to eliminate the need for a conventional bypass damper when used with 3-wire zone dampers. The panel is capable of handling up to 2 stages of conventional heating and cooling or 3 stages of heating and 2 stages of cooling for heat pump and dual fuel applications.
How ESP works
As zone dampers open and close, the ZPA-SPS Static Pressure Sensor continuously monitors the system static pressure. If the static pressure goes above the static pressure setpoint, the sensor will send a signal to the panel which will begin to open selected non-calling zone dampers slightly until the static pressure setpoint is maintained. The small amount of air allowed to bleed into non-calling zones eliminates air noise and assures proper airflow through the HVAC system. The static pressure setpoint is factory set at 0.4″ W.C. but it is fully adjustable from 0.08 to 1.2″ W.C.
Ventilation Kits
UT32-VK-XX
These kits include the UT32 Titan Thermostat, a 20 VA transformer, and a 24V powered open / spring closed damper ranging from 4-10″ ducting. This highly universal control which allows for a fresh air damper to be wired to the thermostat eliminates the need for an additional control panel.
MUA-XX
These kits include a 20 VA transformer, adjustable static pressure sensor ranging from .08 to 1.2″ wc. and a 6-16″ damper. The adjustable static pressure sensor allows the contractor to calibrate when the make-up air damper opens, eliminating excessive unconditioned air in the home. The make-up air damper safely equalizes pressure with the home keeping unwanted and harmful gases from entering the living space due to negative pressure caused by exhaust fans.
When it comes to taking control of your HVAC system, iO HVAC Controls delivers the smart, trade-trusted hardware needed to eliminate everyday installation and comfort headaches. From maximizing indoor air quality with fresh air ventilation kits to simplifying zoning without bulky bypass ducts, their lineup turns complex airflow traffic control into a straightforward solution.
With an extensive lineup of iO HVAC Controls and other high-performance products, HVACquick has everything you need to make your next project.
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