Choosing a high-powered heater for a garage, workshop, or large room requires understanding 240V models that use 30-amp circuits. This guide highlights top 30-amp electric heaters and their features, helping you compare performance, safety, and installation needs.
Summary of selected products:
| Product | Brand | Approximate Power | Plug/Connection | Key Use |
|---|---|---|---|---|
| Dr Infrared Heater DR-988A Garage Shop | DR. INFRARED HEATER | 5600W | NEMA 6-30P / 6-30R required | Garage/workshop heating |
| CTSC 4800W Garage Heater | CTSC | 4800W | Plug-In NEMA 6-30P | Industrial/garage heating |
| TEMPWARE 5000W Electric Garage Heater | TEMPWARE | 5000W | 240V, 30A capable | Workshop/warehouse heating |
| Dura Heat EWH5510 Electric Forced Air Heater | Dura Heat | 5000W | Hard-wired 240V, 30A design | Garage ventilation and warmth |
| GREATBEAR 6kW Tankless Water Heater | GREATBEAR | 6000W | 240V, typical 30A+ circuit | Under-sink hot water (point-of-use) |
Dr Infrared Heater DR-988A Garage Shop 208/240-Volt

The DR-988A model is a high-capacity infrared heater designed for large spaces such as garages or workshops. It operates on 240 volts and delivers up to 5600 watts of heat, suitable for rapid warming in cold environments. A dedicated power cord and receptacle are required (NEMA 6-30P plug and 6-30R outlet). Installation considerations include ensuring a compatible 240V circuit and secure mounting or placement to maximize heat distribution. This unit emphasizes robust performance for areas that demand quick and steady warmth.
CTSC 4800W Garage Heater with Remote and Timer

CTSC’s 4800W garage heater is a 240V, 30A-capable unit designed for workshops and garages. It ships with a full assembly and a 6-foot power cord, ready to plug into a NEMA 6-30P outlet. Safety features include overheating protection and ETL certification, ensuring compliance for enclosed spaces. The compact, sturdy steel body adds durability, while the included thermostat controls help maintain a comfortable environment. It’s a practical option for users who want reliable, plug-in heat in a dedicated workspace.
TEMPWARE 5000W Electric Garage Heater with WiFi

TEMPWARE offers a 5000W ceiling-mount electric garage heater with remote control, WiFi, and a 12-hour timer. It provides adjustable heat levels (up to 5,000W) and directs warm air with louvers to cover large areas up to roughly 592 square feet. The unit supports eco mode that modulates heat to save energy, and it can be controlled via a smartphone app for convenient scheduling. This model targets users seeking modern, connected control alongside strong space heating capability.
Dura Heat EWH5510 Electric Forced Air Heater

The Dura Heat EWH5510 is a large electric forced-air heater designed for garages and workshops, delivering up to 17,060 BTU and 5,000 watts of heat. It operates on a 240V supply with a 30A circuit design and requires professional installation. An integrated remote thermostat and LED readout enable convenient temperature control, while the unit’s construction focuses on steady, distributed warmth across expansive spaces. It’s suitable where centralized heating and quick warm-up are priorities.
GREATBEAR 6kW Tankless Water Heater

While primarily a water heater, the GREATBEAR tankless model operates at 240V with a 6 kW heating element, which translates to a high current draw around 25A depending on actual usage. It provides on-demand hot water and uses self-modulating technology to adjust power input as needed. It includes protective features such as leakage protection and dry heating prevention, and it’s UL/ETL-approved. This option is relevant where point-of-use hot water is a priority and a suitable 30A circuit is available, though it should be installed with care to meet electrical code requirements.
Buying Guide: Key Considerations for 30 Amp Electric Heaters
- Power and heat area: 30A 240V heaters typically range from about 4,800W to 5,600W. Assess space size (square footage and insulation) to determine the necessary wattage and heating coverage.
- Electrical circuit requirements: Most 30A units require a dedicated 240V circuit with a 6-30P plug or a hard-wired connection. Verify your electrical panel capacity and local codes before installation.
- Heat delivery method: Infrared/ceramic heaters warm objects and occupants directly, while forced-air heaters circulate warm air for broader distribution. Consider space layouts and ventilation needs when choosing a method.
- Safety features: Look for overheating protection, tip-over safety, cool-touch housings, and ETL/UL certifications. For enclosed garages, extra safeguards reduce risk in damp or dusty environments.
- Installation and mounting: Ceiling or wall mounting can save floor space and improve airflow. Ensure secure mounting hardware and proper clearance from combustibles as specified by the manufacturer.
- Control options: Remote thermometers, wall thermostats, timers, and even WiFi control can improve energy efficiency. ECO modes help reduce run-time and energy consumption.
- Durability and warranty: Steel housings and protective casings contribute to longevity in workshop settings. Check warranty terms to gauge long-term support.
- Appropriate application: Some units are optimized for garages and workshops, while others are suitable for larger living spaces or commercial environments. Match the unit to the intended space.