SolaRay Sizing Guidelines

Sizing guidelines for SolaRay heating panels: Yoga studios, please fill out our Yoga Quote Form

  • Approximately 10% of the ceiling will be covered for primary heating.
  • Design in a manner that the panels are placed in symmetry, similar to where you would place lights, areas of high heat loss, and where you want the comfort to be.
  • Design the layout so it is also aesthetically pleasing to the eye and the most balanced heat, especially if more than one panel may be used. (I.E. using (2) 2’x4′ 500 watt panels vs. (1) 2’x6′ 1000w panel).

Average watts/square foot (w/sf) that we see for most applications, assuming a desired operating temperature of 70F/21C.

  • Primary heating: 6-7 w/sf
  • Supplemental heating: 4 w/sf
  • NOTE: For rooms with poorly or unknown values of insulation in the walls, floors, ceilings, high ceilings, or large windows, please consider improving these areas and/or adding more watts/sf than suggested.

Examples of watts/square foot by room type:

  • Bath areas: 7 w/sf
  • Living room, office, den, dining or corner bedroom: 5-6 w/sf
  • Middle bedrooms or kitchens: 5-6 w/sf
  • Garage or workshops 6-7 w/sf
  • Basement family rooms 6-7 w/sf

For each feature below, add 1 watt/square foot to the primary or supplemental heating application:

  • 3 or more exterior: walls (Add 1 w/sf)
  • Split level rooms: (Add 1 w/sf)
  • Skylights, sliding glass doors, or fireplaces: (Add 1 w/sf)

For vaulted or cathedral ceilings higher than an average of 8 feet:

  • 10′ ceiling increase watts by 50% (i.e. use a 2’x6′ 750w vs. a 2’x4′ 500w).
  • 12′ ceiling increase watts by 100% (i.e. use a 2’x6′ 1,000w vs. a 2’x4′ 500w).
  • Note: For rooms with high ceilings we suggest you consider using our cove heaters.

Recommended Energy Code Specifications and other considerations:

  • Assuming an operating temperature of 70F/21C
  • R value of walls R21, ceilings R38, floors R30, and glass R2
  • Air exchange of .25 per hour
  • NOTE: It is advisable check your local energy codes to maximize the energy efficiency of our heating products, which will perform best when the performance envelope of the room(s) is considered as well.
  • NOTE: Only one line voltage thermostat (manual or programmable) per room is required. For rooms requiring more than 4,000 watts, a low voltage thermostat, heat relay, and transformer will be required.