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PRO1 IAQ

PRO1 IAQ is a manufacturer of thermostats and HVAC control accessories for residential and light commercial applications. The product line covers low-voltage heat-and-cool thermostats, wireless and Wi-Fi enabled models, remote temperature sensors, and installation accessories such as thermostat guards and wall cover plates. 3G Electric supplies the PRO1 IAQ range to contractors, facility maintenance teams, and procurement specialists who need documented specifications and consistent availability.

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About PRO1 IAQ

PRO1 IAQ is a manufacturer of thermostats and HVAC control accessories for residential and light commercial applications. The product line covers low-voltage heat-and-cool thermostats, wireless and Wi-Fi enabled models, remote temperature sensors, and installation accessories such as thermostat guards and wall cover plates. 3G Electric supplies the PRO1 IAQ range to contractors, facility maintenance teams, and procurement specialists who need documented specifications and consistent availability.

The thermostat portfolio includes programmable and non-programmable units with push-button control, 7-day scheduling, and fan settings that range from simple Auto-On to Auto-On-Circulate and Hi-Med-Low. Terminal designations such as B, C, G, O, RC, RH, W, W2, E, and Y2 appear across the line, supporting conventional and heat pump configurations. Stage capability reaches 2H/2C conventional and 3H/2C heat pump on models like the T755WHO. Wi-Fi models such as the T701i and T721i allow in-app programming, while the T855iSH adds humidification control. Housing color is typically white, and control type is push-button across the listed models.

Accessories in the line include the R251S indoor remote sensor and R250S outdoor remote sensor, both surface-mount and hardwired, compatible with PRO1 IAQ models T755S, T855S, and T955S. The indoor sensor operates from 32°F to 99°F; the outdoor sensor from -4°F to 140°F. Mounting hardware is included with both. Thermostat guards are available with a clear snap-on cover and ring base, with inside dimensions of 5-1/2 in H x 7-1/4 in W x 2-5/8 in D and outside dimensions of 5-1/2 in H x 7-1/4 in W x 2-1/2 in D, supplied with lock and key. Wall cover plates measure 5-1/2 in x 7-1/2 in and can be mounted horizontally or vertically to cover wall imperfections around a thermostat or control.

3G Electric supports the PRO1 IAQ line with global logistics, product data, and quotation services. Buyers can source individual thermostats, sensors, and accessories, or configure mixed orders across the PRO1 IAQ catalog. The product information provided includes terminal designations, stage counts, fan settings, and dimensional data to assist with specification and replacement decisions. For application questions or to confirm compatibility with existing PRO1 IAQ controls, contact 3G Electric with the model number and required configuration.

Common Applications

  • Residential HVAC — PRO1 IAQ T701i Wi-Fi thermostat for 7-day programmable heat and cool control
  • Light commercial zoning — PRO1 IAQ T755WHO wireless thermostat with 2H/2C conventional or 3H/2C heat pump staging
  • Humidification control — PRO1 IAQ T855iSH thermostat with humidification and Hi-Med-Low fan settings
  • Remote temperature sensing — PRO1 IAQ R251S indoor or R250S outdoor sensor for T755S, T855S, and T955S models
  • Tamper prevention — PRO1 IAQ thermostat guard with lock and key for restricted-access areas
  • Wall repair after thermostat replacement — PRO1 IAQ wall cover plate, 5-1/2 in x 7-1/2 in, horizontal or vertical mount

Frequently asked questions

Common questions about PRO1 IAQ from 3G Electric.

What terminal designations are available on PRO1 IAQ thermostats?

PRO1 IAQ thermostats use standard HVAC terminal designations including B, C, G, O, RC, RH, W, W2, E, and Y2. These terminals support conventional heat-and-cool systems as well as heat pump configurations. For example, the T755WHO supports 2H/2C conventional and 3H/2C heat pump stages. When selecting a model, match the terminal designations to the existing system wiring and confirm the required stage count. The T701i uses B/C/G/O/RC/RH/W terminals, while the T755WHO adds W2, E, and Y2 for additional stages.

Which PRO1 IAQ models support Wi-Fi or wireless operation?

The PRO1 IAQ T701i and T721i are Wi-Fi thermostats that allow in-app programming. The T855iSH is a wireless low-voltage thermostat with push-button control and 7-day programming. The T755WHO is a square wireless thermostat supporting automatic changeover and humidification control. Wi-Fi models are typically used where remote scheduling or monitoring is required, while wireless models communicate with compatible equipment without a Wi-Fi network. Confirm network compatibility and app requirements before specifying a Wi-Fi model.

What are the temperature ranges for PRO1 IAQ remote sensors?

The PRO1 IAQ R251S indoor remote sensor operates from 32°F to 99°F. The R250S outdoor remote sensor operates from -4°F to 140°F. Both are surface-mount, hardwired sensors compatible with PRO1 IAQ models T755S, T855S, and T955S. Mounting hardware is included. These sensors are used to measure temperature at a location away from the thermostat, such as a return air duct or an exterior wall, to improve control accuracy in zoned or unevenly conditioned spaces.

What thermostat guard options does PRO1 IAQ offer?

PRO1 IAQ supplies a single-wall thermostat guard with a clear snap-on cover and ring base. Inside dimensions are 5-1/2 in H x 7-1/4 in W x 2-5/8 in D; outside dimensions are 5-1/2 in H x 7-1/4 in W x 2-1/2 in D. The guard includes a lock and key to restrict access. It is used in commercial or institutional settings where unauthorized adjustment of thermostat settings must be prevented. Verify the thermostat dimensions against the guard's inside dimensions before installation.

Can PRO1 IAQ thermostats be used in light commercial applications?

Yes. PRO1 IAQ thermostats are specified for residential and light commercial heat-and-cool applications. Models such as the T855iSH and T755WHO include features like humidification control, automatic changeover, and multi-stage support that suit small commercial spaces. The push-button control and 7-day programming allow scheduled operation for offices, retail spaces, and similar environments. For larger or more complex systems, confirm the required stage count and terminal designations against the thermostat's specifications.

What is the purpose of the PRO1 IAQ wall cover plate?

The PRO1 IAQ wall cover plate is a white plastic accessory measuring 5-1/2 in x 7-1/2 in. It can be mounted horizontally or vertically and is used to cover wall imperfections around a thermostat or control after installation or replacement. The cover plate is part of the Pro 1 series accessories. It is typically used when a new thermostat does not fully cover marks or holes left by an older control. Confirm the plate dimensions against the wall area requiring coverage.