Propane Heater Size Calculator
Here's a comprehensive table summarizing all you need to know about propane heater sizes:
| Room Size (m²) | Heat Output (kW) | Climate Zone | BTU per Square Foot | Recommended Heater Size (BTU) |
|---|---|---|---|---|
| Small (29-42) | 2.9 - 4.2 | Zone 1 | 30-35 | 870 - 1,470 |
| Medium (42-66) | 4.3 - 6.6 | Zone 2 | 35-40 | 1,470 - 2,640 |
| Large (66-82) | 6.7 - 8.2 | Zone 3 | 40-45 | 2,640 - 3,690 |
| Extra Large | 8.2+ | Zone 4 | 45-50 | 3,690+ |
| Zone 5 | 50-55 |
Additional Information
Sizing Considerations:
- Climate and temperature extremes
- Room layout and insulation
- Number and type of windows
- Flooring material (especially for radiant heating)
- Ceiling height (deduct 5% for heights over 2.4m)
Adjustment Factors:
- Deduct 5% for each: house on pillars, no carpets, no window drapes
- Deduct 10% if no ceiling insulation
Safety Features to Look For:
- Oxygen Depletion Sensor (ODS)
- Tip-over switch
- Automatic shut-off to prevent overheating
Efficiency Tips:
- Look for thermostats or variable heat settings
- Consider Energy Star rated models (Energy Factor > 0.67 for ≤55 gallon tanks, >0.77 for >55 gallon tanks)
Venting Options:
- Vented: Permanent installation with outside flue, suitable for larger spaces
- Vent-free: More flexible placement, best for smaller rooms and occasional use
Remember, these are general guidelines. It's always wise to consult with a professional or use manufacturer-specific sizing charts for the most accurate heater selection.