Download Kelvin User Manual July 23, 2025 17:51 Please click on the link below to download User Manual for Boldr Kelvin Smart Heater Download KELVIN ManualNeed Help?Contact our Tech Support Team at +1 (888) 269-2296, Monday to Friday, 9AM-5PM ET. Related articles What is Shipment Processing Time? Return Policy and Requirements My product arrived damaged! What do I do? Smart Features of the Boldr Klima Smart Thermostat Explained