The ProMax® family offers a wide range of water heating solutions — from models that help you qualify for gas utility rebates to high recovery models ideal for large families with high demand for hot water. All ProMax water heaters are engineered to help lower your energy bills and provide exceptional reliability. They go the extra mile in safety innovation with C3 Technology™ that protects against accidental ignition of flammable vapors. Our ProMax SL “side loop” models are designed to handle both water heating and space heating in your home.