My Spathiphyllum wallisii finally stopped its dramatic drooping act once I moved it away from the heater vent

My Spathiphyllum wallisii finally stopped its dramatic drooping act once I moved it away from the heater vent. Turns out it wants consistent moisture and humidity, not the dry blasts I was giving it. Now it flowers almost constantly. Has anyone else found that these actually prefer being slightly rootbound, or am I just lucky?