The SPEEDTEMP SOLO™ PORTABLE HEATER PH series is our powerful-but-portable conventional heating units. Delivering up to 30,700BTU/9000watts with the 240V model and up to 61,800BTU/18,000watts with the 480V model, these units bring the heat they bring it now. Powerful, efficient, and cost-effective, PH series heaters are absolute workhorses and valuable addition to your operation.