electric heaterColorado Tri-Flo’s (tri-flo.com) Electro-Flo line of electric heaters are designed to heat areas with an airflow ranging from 39,000 to 238,000 BTUs. There are a variety of models available, with power ranges from 110-120V and 208-240V to power any job. All models are durable, compact and portable and use directed heat airflow.