The best way to heat a screened-in porch is by using electric heaters or infrared heaters for efficient, safe, and targeted warmth without obstructing views.
Chilly evenings ruining your screened-in porch relaxation? You’re not alone. Many homeowners struggle with drafts, uneven heating, and high energy costs when trying to warm their outdoor space.
The right heating solution can transform your porch into a cozy year-round retreat. In this guide, we’ll cover the top methods, from infrared heaters to portable electric options, plus tips to maximize efficiency. For larger spaces, consider a ducted heating system as a permanent fix.
Key Takeaways
- Infrared heaters offer energy-efficient, targeted warmth without drying the air
- Portable electric heaters are budget-friendly for small to medium porches
- Vinyl enclosures boost heat retention by up to 60% when paired with heaters
- Propane heaters work best for large areas but require ventilation
1. Infrared Heaters (Most Efficient Option)
Best way: infrared heaters or portable electric heaters for efficient, targeted warmth. Infrared models like the Dr. Infrared DR-968 heat objects directly (not just the air), making them 30% more efficient than conventional heaters. Key benefits:
- Instant heat – No warm-up time
- Silent operation – No fans or buzzing
- Zone heating – Focus warmth where needed
Install wall-mounted units 7-8 feet high for optimal coverage. For porches under 200 sq ft, a single 1,500W unit suffices (Energy.gov guidelines).
2. Portable Electric Heaters (Budget Pick)
For under $100, options like the Lasko 754200 provide adjustable thermostats and safety tip-over switches. Ideal for:
- Small porches (up to 150 sq ft)
- Temporary use – Easily stored in summer
- Supplemental heat – Pair with thermal curtains
Choose ceramic models over coil heaters—they distribute heat more evenly and are 15% more energy efficient.
3. Propane Patio Heaters (For Large Spaces)
Standing propane heaters like the Mr. Heater Big Buddy can warm areas up to 400 sq ft. Crucial considerations:
- Ventilation – Must have 20% open screen area
- Fuel costs – ~$3/hour to operate
- Safety – Keep 3+ feet from flammable materials
4. Radiant Floor Heating (Luxury Solution)
For year-round use, electric radiant mats ($8-$12/sq ft installed) provide invisible, even heat. Best for:
- Enclosed porches with flooring access
- Cold climates – Maintains 70°F in sub-freezing temps
- High-end renovations – Adds property value
5. Thermal Curtains + Space Heaters (Combo Approach)
Pairing insulated curtains with a small heater reduces heat loss by 45%. Recommended setup:
- Thermalogic curtains (R-value 3.5+)
- Oil-filled radiator heater – Safe for prolonged use
- Door sweeps – Blocks drafts
| Method | Cost | Best For | Heat Retention |
|---|---|---|---|
| Infrared Heaters | $150-$400 | Medium porches | ★★★★★ |
| Portable Electric | $50-$120 | Small spaces | ★★★☆☆ |
| Propane Heaters | $200-$600 | Large open areas | ★★★★☆ |
Final Thoughts
For most homeowners, infrared heaters strike the perfect balance of efficiency and affordability. Prioritize safety—ensure all heating devices are UL-listed and kept away from screens. With these solutions, your porch can become a four-season sanctuary. For extreme climates, consult a heating specialist to assess insulation needs.
