Snow melt systems shall comply with the requirements of the International Energy Conservation Code. Hydronic systems shall supplement not less than 25 percent of the design snow melting total annual consumption measured in Btu/ft2 (J/m2), energy per unit area. Electric systems shall supplement not less than 50 percent of the design snow melt peak load demand. These requirements shall be supplied by one or both of the following:
- An onsite renewable energy system.
- A heat recovery system.