PECO

PECO is a manufacturer of HVACR controls and related components, with a product line that includes thermostats, occupancy sensors, and fan coil controls. The brand's history in the controls segment is not widely documented in public sources, but its catalog is known to technical buyers for mechanical and analog control solutions used in commercial and industrial environments. PECO products are typically specified where straightforward, field-serviceable control is required, rather than for networked or programmable building automation systems. The product families most commonly encountered include line-voltage mechanical thermostats, fan coil unit thermostats, weatherproof single-stage controls, and indoor occupancy sensors. These devices are used in heating, cooling, and ventilation applications across light commercial, institutional, and industrial settings. Technical characteristics vary by model: line-voltage thermostats may operate from 24 to 277V AC or up to 480V AC, with temperature ranges such as 40° to 110°F or 0° to 120°F and fixed differentials around 3°F. Enclosure options include plastic housings and NEMA 4X weatherproof ratings for outdoor or washdown environments. Sensing elements are often hydraulic air coil type, and switch actions are typically SPDT open or close on rise. Fan coil thermostats offer 1H/1C staging with slide switch control and fan settings of Hi-Med-Low-Auto. Occupancy sensors are surface-mount, hardwired devices for indoor motion detection, operating from -4° to 100°F. 3G Electric supplies PECO controls as part of its industrial equipment distribution line. The company provides access to multiple SKUs, including current and legacy part numbers, with datasheets and logistics support for global delivery. For procurement and maintenance teams, 3G Electric can assist with identifying equivalent or replacement models based on voltage, temperature range, enclosure type, and switch configuration. The focus is on supplying the specified PECO control for the application, with attention to part number accuracy and availability. This supports maintenance, repair, and operations (MRO) workflows where matching existing controls is critical. 3G Electric does not manufacture PECO products; it distributes them as part of a broader portfolio of industrial burners, pumps, gas controls, and related equipment. The PECO line is one of several control and sensor brands available through 3G Electric, and inquiries can be directed to the sales team for current stock, lead times, and technical documentation.

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BrandPECO

CategoryReplacement HVACR Controls, Switches & Thermostats

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About PECO

Common Applications

Commercial buildings — PECO line-voltage mechanical thermostats (e.g., TF115-001) for single-stage heating or cooling control in perimeter zones.
Industrial washdown areas — PECO NEMA 4X weatherproof thermostats (e.g., TF115-023) for outdoor or washdown environments requiring watertight enclosures.
Fan coil units — PECO analog fan coil thermostats (e.g., TB155-046) for local temperature and fan speed control in hotel or office spaces.
Warehouse lighting — PECO occupancy sensors (e.g., SA200-001) for automatic lighting control in low-traffic areas to reduce energy use.
Outdoor HVAC equipment — PECO weatherproof single-stage controls (e.g., TRF 115-007) for freeze protection or space heating in remote enclosures.
MRO replacement — PECO mechanical thermostats (e.g., TH109-009) as direct replacements for existing controls in institutional buildings.

Frequently asked questions

Common questions about PECO from 3G Electric.

What is the difference between PECO line-voltage mechanical thermostats and fan coil unit thermostats?

PECO line-voltage mechanical thermostats, such as the TF115-001 or TH109-009, are single-stage controls for heat or cool applications. They use a hydraulic air coil sensing element and provide SPDT switching with a fixed differential, often around 3°F. They are available in plastic or NEMA 4X enclosures and operate at voltages from 120 to 480V AC. PECO fan coil unit thermostats, like the TB155-046, are designed for 1H/1C staging with slide switch control and fan settings of Hi-Med-Low-Auto. They operate on 24 to 277V AC and are typically used in fan coil units for local temperature control. The key difference is that fan coil thermostats include fan speed control and are intended for fan coil applications, while line-voltage mechanical thermostats are general-purpose single-stage controls.

What are the voltage and temperature ranges for PECO weatherproof single-stage controls?

PECO weatherproof single-stage controls are available with different voltage and temperature specifications. For example, the TF115-023 and TRF 115-007 operate on 120, 208, 240, 277, or 480V AC and are housed in NEMA 4X enclosures. The TF115-001 operates on 24 to 277V AC with a temperature range of 40° to 110°F and a 3°F differential. The TH109-009 has a 40° to 100°F range, while the 4MY93 model has a 0° to 120°F range and includes a 5 ft capillary. These controls are suitable for outdoor or washdown environments when specified with the appropriate enclosure. Always verify the specific model's datasheet for exact ratings.

Can PECO occupancy sensors be used for HVAC control?

PECO occupancy sensors, such as the SA200-001 and SB200-001, are indoor motion detection devices with surface-mount, hardwired connections. They operate in temperatures from -4° to 100°F. While their primary application is automatic lighting control, they can also be used for HVAC control by integrating with a building management system or directly switching low-voltage circuits. However, they are not thermostats and do not provide temperature regulation. For HVAC control, they would typically be used to signal occupancy status to a controller or to switch a fan or damper. Verify compatibility with your specific HVAC control circuit before installation.

What replacement options exist for obsolete PECO thermostat part numbers?

PECO has produced many thermostat models over the years, and some part numbers may become obsolete or superseded. When looking for a replacement, match the critical specifications: voltage, temperature range, differential, switch action (SPDT open or close on rise), enclosure type (plastic or NEMA 4X), and sensing element (hydraulic air coil). For example, the TF115-001 and TH109-009 share similar specifications but may differ in temperature range. 3G Electric can assist in identifying a current PECO model or a compatible alternative based on these parameters. Provide the original part number and application details for accurate cross-referencing.

Are PECO fan coil thermostats compatible with 277V AC power?

Yes, PECO fan coil thermostats such as the TB155-046 are rated for 24 to 277V AC operation. This makes them suitable for a range of fan coil unit applications, including those powered by 277V AC. The thermostat provides 1H/1C staging and fan control settings of Hi-Med-Low-Auto. Ensure that the fan coil unit's voltage and control circuit match the thermostat's ratings. For specific wiring and compatibility questions, consult the product datasheet or contact 3G Electric for technical support.

What is the temperature differential on PECO mechanical thermostats?

Many PECO mechanical thermostats have a fixed differential of approximately 3°F. For example, the TF115-001, TH109-009, and 4MY93 models all specify a 3°F differential. This differential determines the temperature swing between the on and off points of the switch. A fixed differential simplifies setup and ensures consistent operation. Some models may have different differentials; always check the specific product datasheet. The differential is not adjustable on these fixed-differential models.