Choosing a 30 amp electric heater for a garage or workshop involves balancing power, safety, and ease of use. This guide highlights five top options that are compatible with 240V circuits and provide reliable warmth for larger spaces. Each model features robust construction, practical controls, and safety protections to help maintain a comfortable work environment year-round.
Summary of selected products:
| Product | Brand | Power | Voltage | Key Benefit |
|---|---|---|---|---|
| Dr Infrared Heater DR-988A | DR. INFRARED HEATER | 5600 W | 240V | |
| CTSC 4800W Garage Heater | CTSC | 4800 W | 240V | |
| TEMPWARE 5000W Electric Garage Heater | TEMPWARE | 5000 W | 240V | |
| Dura Heat EWH5510 Electric Forced Air Heater | Dura Heat | 5000 W | 240V | |
| GREATBEAR 6KW Tankless Water Heater | GREATBEAR | 6000 W | 240V |
Dr Infrared Heater DR-988A: High-Wattage Garage Heater

The DR-988A provides substantial heat output for large spaces, requiring a 240-Volt supply and a NEMA 6-30R outlet. It operates at up to 5600 watts with a 6-30P power cord. Ensure installation adheres to electrical codes and uses the appropriate receptacle to deliver full performance safely.
Features emphasize high power and compatibility with dedicated 30-amp circuits. Users should plan for professional electrical connection if mounting or hard-wiring is involved. This unit is designed for garages or workshops where robust heating is needed quickly.
CTSC 4800W Garage Heater: 30A, 240V

CTSC offers a 240V, 30A plug-in heater designed for garages and workshops. It arrives with a 6-30P plug and a 6-foot cord, making it straightforward to install on a dedicated 240V circuit. The body is built from SPCC steel with overheating protection and ETL certification, signaling solid safety standards for enclosed spaces.
The unit ships assembled for quick use, and the 30A compatibility supports rapid, even warming of medium-to-large areas. It’s particularly suitable where a simple plug-in solution is preferred without complex wiring.
TEMPWARE 5000W Electric Garage Heater

TEMPWARE brings smart controls to a 5000W heater with 240V operation and 30-amp readiness. Features include triple control methods: remote, WiFi, and a touch panel. A large 17,060 BTU output can warm spaces up to about 592 square feet, with a programmable timer for energy efficiency.
Users enjoy adjustable airflow and louvers to direct heat. The unit’s ECO mode auto-adjusts to ambient conditions, helping balance comfort and energy use in busy workshops or garages where heat needs evolve.
Dura Heat EWH5510 Electric Forced Air Heater

With 17,060 BTU and a 30-amp electrical requirement, the Dura Heat EWH5510 is designed for garages and larger spaces up to 750 square feet. It uses hard-wired 240V power and includes a remote control with an adjustable thermostat for convenient operation from anywhere in the room.
Professional installation is advised due to the hard-wired design. The unit emphasizes visible indicators and reliable operation, suitable for continuous use in winter conditions where steady warmth is essential.
GREATBEAR 6KW Tankless Electric Heater

This 6000-watt, 240V unit operates on a tankless design with self-modulating tech to adjust energy use based on demand. It provides on-demand hot water for under-sink use, featuring ETL/UL qualifications and safety protections, including leakage and dry heating safeguards.
Note that this is a different category (water heating) but is listed here for 30A compatibility and its emphasis on efficient, on-demand performance in compact settings where hot water is needed without storage.
Buying Guide: Key Considerations For 30 Amp Electric Heaters
Power availability and circuit safety are the primary concerns when selecting a 30 amp heater. Ensure your electrical panel can handle the additional load and that dedicated 240V outlets (such as NEMA 6-30) are installed by a licensed electrician if needed.
Space coverage matters: higher wattage heaters quickly warm larger areas but may be unnecessary for tight spaces. Check square footage guidance and whether features like oscillation, tilting louvers, or ECO modes help reduce energy use while maintaining comfort.
Control options influence convenience and energy savings. Look for models with remote control, wall-mounted thermostats, or WiFi connectivity to pre-heat spaces before work starts, especially in unheated garages and workshops.
Safety features are essential in workshop environments. Prioritize units with overheat protection, cool-touch housings, sturdy housings, and ETL or UL listings. For enclosed spaces, ensure proper ventilation and clearance from combustibles.
Installation considerations include whether the unit is plug-in or hard-wired. Plug-in units are easier to deploy in finished spaces, while hard-wired models may offer more stable performance for continuous use in garages. Professional installation is recommended for hard-wired setups to ensure compliance and safety.
Energy efficiency matters for ongoing cost control. Look for features such as ECO mode, programmable timers, and sensors that modulate heat output based on actual room conditions, reducing waste and electricity usage over time.