Single-phase equipment heat calculator

Convert real single-phase electrical watts to heat in the space.

Units

q_{\text{1ph}} = V \times I \times \mathrm{PF} \times 3.412 \times \text{Use}_{\text{factor}}

Calculator

Enter the values you know and leave one box empty. Calculate finds the empty one, the result or any input.

Given

q_{\text{1ph}} = 100 \times 0.85 \times 0.85 \times 3.412 \times 0.85 \approx 209.5

Symbol	Meaning	Unit
$q_{\text{1ph}}$	single-phase electric heat rate	Btu/h
$\text{Use}_{\text{factor}}$	operating time fraction	—
$\mathrm{PF}$	power factor	—
$V$	voltage	V
$I$	current	A

Symbol	Meaning	Unit
$q_{\text{1ph}}$	single-phase electric heat rate	kW
$\text{Use}_{\text{factor}}$	operating time fraction	—
$\mathrm{PF}$	power factor	—
$V$	voltage	V
$I$	current	A

Results are estimates for study and screening. Check the inputs, units and assumptions before you use them for design, billing or contract decisions.