Spa heats very slowly or cannot reach the set temperature, especially in cooler weather.

Safety first: Keep electrical components dry while adding insulation or covers.

• Use the insulated cover: Always keep the SaluSpa cover on and latched while heating. Heat loss from the surface is the main cause of slow heating.
• Add ground insulation: Place an insulating mat or foam board under the spa to reduce heat loss to the ground.
• Check for drafts: Shield the spa from wind using windbreaks or placing it in a more sheltered location.
• Descale heater: If you have hard water, run a descaling treatment and flush the system to remove mineral buildup on the heater element.
• Adjust expectations: In cold weather, portable spas may only raise temperature 1–2°C (2–4°F) per hour. Plan heating time accordingly.

Warning: Do not cover or insulate the pump/heater air vents; this can cause overheating.