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Radiant Tube Heater Size Calculator

Radiant Tube Heater Formula:

\[ BTU/h = Area \times 35 \]

square feet

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1. What is Radiant Tube Heating?

Radiant tube heaters provide efficient, targeted warmth by emitting infrared radiation that heats objects directly rather than heating the air. They're ideal for large spaces with high ceilings like warehouses, garages, and workshops.

2. How Does the Calculator Work?

The calculator uses the standard sizing formula:

\[ BTU/h = Area \times 35 \]

Where:

Explanation: This formula provides a basic estimate of the required heating capacity for typical applications.

3. Importance of Proper Sizing

Details: Correct sizing ensures efficient operation, prevents energy waste, and maintains comfortable temperatures. Oversized units cycle too frequently while undersized units run constantly.

4. Using the Calculator

Tips: Enter the total floor area in square feet. For spaces with high heat loss (poor insulation, many doors), consider adding 10-20% to the calculated value.

5. Frequently Asked Questions (FAQ)

Q1: What's the difference between BTU/h and watts?
A: 1 watt = 3.412 BTU/h. The calculator provides results in BTU/h, the standard unit for heating systems in the US.

Q2: Does ceiling height affect the calculation?
A: Radiant heating is less affected by ceiling height than forced-air systems since it heats objects directly rather than the air volume.

Q3: What about spaces with high ceilings?
A: For ceilings over 20 feet, consult a professional as additional factors like mounting height become important.

Q4: Is this calculator suitable for all climates?
A: The 35 BTU/sq ft multiplier works for most temperate climates. Colder regions may need 40-45 BTU/sq ft.

Q5: Can I use this for residential spaces?
A: While primarily designed for commercial/industrial use, radiant tubes can work in large residential spaces like garages or workshops.

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