Unit Heater Sizing Calculator

Unit Heater Sizing Formula:

\[ Q = \text{Size} \times \text{Conversion Factor} \]

Q (kW):

Definition: This calculator determines the required heating capacity (Q) based on the size of the space and a conversion factor.

Purpose: It helps HVAC professionals and engineers properly size unit heaters for various spaces.

The calculator uses the formula:

\[ Q = \text{Size} \times \text{Conversion Factor} \]

Where:

\( Q \) — Required heating capacity (kW)
\( \text{Size} \) — Size of the space (kW)
\( \text{Conversion Factor} \) — Adjustment factor (typically 1.2 for standard applications)

Explanation: The space size is multiplied by a conversion factor to account for heat loss, insulation, and other variables.

Details: Correct sizing ensures efficient operation, proper temperature control, and energy savings while preventing equipment overload.

Tips: Enter the space size in kW and conversion factor (default 1.2). All values must be > 0.

Q1: What is the conversion factor?
A: It accounts for heat loss, insulation quality, and specific application requirements.

Q2: How do I determine the space size?
A: Calculate based on volume (length × width × height) and heat loss characteristics.

Q3: When should I adjust the conversion factor?
A: Increase for poorly insulated spaces (1.3-1.5) or decrease for well-insulated areas (0.9-1.1).

Q4: Does this account for climate differences?
A: No, climate-specific adjustments should be made to the conversion factor.

Q5: What about multiple zones?
A: Calculate each zone separately and sum the results for multi-zone systems.