Heater Size Calculator
Find the ideal heater size for your room. Enter your room dimensions, insulation level, and climate to determine the best heater size in BTUs or watts.
Room and Climate Details
List of the Best Heater:
Understanding Heater Sizing
Choosing the right heater size is essential for ensuring efficient heating and comfort in your room. The correct size depends on the room dimensions, insulation level, and climate.
How to Calculate Heater Size
The size of a heater is calculated based on the room volume, insulation level, and climate. Here's the formula:
| Parameter | Formula | Description |
|---|---|---|
| Room Volume | Length × Width × Height | Volume of the room in cubic feet |
| Base BTUs | Volume × 10 | Base heating requirement (10 BTUs per cubic foot) |
| Adjusted BTUs | Base BTUs × Insulation Factor × Climate Factor | Adjust for insulation and climate |
| Heater Watts | BTUs × 0.293071 | Convert BTUs to watts |
Common Heater Sizes
Here are some standard heater sizes and their typical applications:
| Heater Size | Typical Use |
|---|---|
| 5,000 BTUs | Small rooms (up to 150 sq ft) |
| 10,000 BTUs | Medium-sized rooms (up to 300 sq ft) |
| 15,000 BTUs | Large rooms (up to 500 sq ft) |
| 20,000+ BTUs | Very large rooms or open spaces |
Frequently Asked Questions
What happens if my heater is too small?
If the heater is too small, it may not adequately heat the room, leading to discomfort and inefficiency.
Can I use a heater that's too large?
Yes, but an oversized heater may cycle on and off frequently, reducing efficiency and increasing energy costs.
How do I measure my room dimensions?
Measure the length, width, and height of your room in feet. Multiply these values to get the volume in cubic feet.
What is the difference between BTUs and watts?
BTUs measure heating capacity, while watts measure electrical power. 1 BTU is approximately 0.293071 watts.