MR COOL Universal Series Air Handler Electric Heat Kit, 5kWWant your MRCOOL split system to keep you comfortable all year long? Just add a MRCOOL Electric Heat Kit with Circuit Breaker to your MRCOOL air handling unit. Now you can cool your space when it's hot outside, and heat your space when it's cold with the same HVAC system. MRCOOL product quality means you get nickel chromium heat elements, sequencers for better temperature control, multiple branch circuit capability, and a factory installed circuit