Heating can extend patio use into cooler weather, but the pergola structure and roof create clearance and electrical constraints that need to be solved before choosing wattage.
Start with the constraint
Radiant electric heaters are common for covered patios because they can be mounted strategically and do not rely on heating all surrounding air.
What changes the decision
Heat output that works in a sheltered space may feel weak in an open windy pergola. Adding screens can improve comfort but changes ventilation and sometimes structural exposure.
What to verify before buying
Follow both heater and pergola manufacturer clearance rules, confirm circuit capacity with a qualified electrician, and avoid mounting equipment where a moving louver roof can interfere.
How we research pergolas
We prioritize material specification, roof system, published wind and snow engineering, span, drainage, anchoring, installation requirements, warranty, accessory ecosystem, and total configured cost. Local building codes and site-specific engineering take priority over general product claims.
Prices, specifications, firmware, and configuration-driven features can change. Check the current manufacturer page and local requirements before buying or installing equipment.