Heater Size Calculator
Estimate BTU/hr and a practical kW planning range.
Portable Diesel Heater Calculators
Use conservative estimates to compare equipment and plan power, fuel, and heat. Confirm final decisions against verified manufacturer specifications.
Fuel Runtime Calculator
Estimate hours from tank size, burn rate, and duty cycle.
Battery Runtime Calculator
Estimate usable overnight runtime from amp-hours.
Troubleshooting Selector
Start diagnosis from the symptom instead of guessing parts.