Description
Overview
The SunStar SIR Series Eclipse is a compact infrared radiant tube heater built for garages, workshops, small businesses, and covered patio applications. Models are available in 25,000, 35,000, and 45,000 BTU input capacities with a 15 ft total emitter tube length. Each unit is offered for natural gas or propane, with single-stage or two-stage control options identified by the model suffix. The heater is designed for ceiling suspension and supports horizontal mounting or angle mounting up to 45 degrees. Heat is delivered through infrared radiation that warms people, floors, and objects directly rather than relying on forced-air circulation.
Performance
The SIR Series uses radiant heat transfer to target occupied areas, with surfaces absorbing energy and re-radiating it to support comfort in the space. Single-stage models operate at a fixed input, while two-stage models provide high/low firing to match changing load conditions. The system is a pull-through (negative pressure) design that draws products of combustion through the combustion chamber. A 30-second pre-purge period and a defined trial-for-ignition sequence support controlled burner operation. Efficiency and airflow values commonly used for forced-air equipment are not applicable to infrared radiant tube heating unless specifically stated.
Smart Features
The SIR Series supports thermostat-based control and can be applied as single-heater control or grouped zone control. Single-stage configurations are controlled as on/off operation through a thermostat. Two-stage configurations can be controlled using a thermostat or a three-position switch to select low fire or high fire. Zoning can be implemented by wiring multiple heaters to a shared control device where appropriate. Connectivity features such as Wi?Fi controls, mobile apps, or cloud monitoring are not specified for this series in the provided documentation.
Comfort & Noise
Infrared radiant heat reduces dependence on moving air, helping limit drafts that are common with convection-based heating approaches. By warming surfaces and occupants directly, the system can improve perceived comfort in areas that are difficult to heat uniformly. Mounting height and orientation influence radiant distribution across the floor area, supporting tailored coverage for the application. Operational sound is primarily associated with the draft inducer and burner operation rather than a high-CFM air handler. Comfort outcomes are achieved through radiant output patterns and placement rather than ducted airflow delivery.
Use Case Fit
The SIR Series is commonly applied in residential garages, vestibules, entryways, workshops, and farm buildings where direct heat delivery is beneficial. Covered patio and outdoor restaurant installations can use the same radiant approach to focus heat into the occupied zone. Two-stage control is recommended in patio applications where conditions vary and lower firing can be used during mild weather. Compact heater length supports use where space constraints exist while maintaining a 15 ft emitter tube configuration. Model size selection depends on building heat loss and regional conditions, and heaters may be applied individually or in zones.
Value & Reliability
The Eclipse heat exchanger uses heavy-duty aluminized steel tube construction and is paired with aluminum reflectors designed to direct radiant energy. Direct spark ignition provides electronic startup control and is paired with 100% gas safety shut-off control. The negative-pressure combustion design pulls products of combustion through the chamber, supporting controlled venting and combustion-air strategies. System indicator lights and a solid-state ignition module provide status feedback for service and troubleshooting. Optional accessory kits are available for specific applications, including outdoor and emitter guard configurations where applicable.
Summary Wrap-Up
SunStar SIR Series Eclipse infrared tube heaters provide a compact gas-fired radiant solution for hard-to-heat spaces and zone-heating applications. Multiple BTU sizes, natural gas or propane configurations, and single-stage or two-stage controls support flexible specification for residential and light commercial needs. Ceiling suspension with horizontal or 45-degree mounting helps align radiant coverage with the occupied area. Direct spark ignition and integrated gas safety shut-off control support managed burner operation. For D2C buyers and wholesale sourcing, the SIR Series offers a defined set of configurations built around radiant heat delivery and straightforward control options.
Key Features
- Fuel type: Offered in natural gas (N5/N7) or propane (L5/L7) configurations based on model suffix.
- BTU input options: Available in 25,000, 35,000, and 45,000 BTU input ratings to match different space loads.
- Control configurations: Single-stage valves (N5/L5) or two-stage high/low firing valves (N7/L7) support thermostat or switch control.
- Heat delivery method: Infrared radiant tube output warms people and surfaces directly to support zone heating.
- Mounting orientation: Designed for ceiling suspension with horizontal installation or angle mounting up to 45 degrees.
- Ignition system: Direct spark ignition with 100% gas safety shut-off control supports controlled burner operation.
