homelab

Estimate the cooling load (BTU/hr) for a homelab or server closet based on equipment wattage, room dimensions, insulation quality, and solar exposure. All electrical power converts to heat — this tool calculates equipment heat output, envelope heat gain through walls, and solar gain to produce a total BTU/hr cooling requirement. Recommends AC tonnage, mini-split sizing (rounded to standard 6K BTU increments), and exhaust fan CFM for ventilation-only cooling. Use after power_cost to size cooling for your homelab room.

post/api/cooling_btu

Request

  • Base URL: https://calc.engineer
  • URL: https://calc.engineer/api/cooling_btu
  • Auth: none declared

Request body

total_wattsnumber required

Total power consumption in watts — all power becomes heat

room_length_ftnumber

Room length in feet

room_width_ftnumber

Room width in feet

room_height_ftnumber

Room ceiling height in feet

insulation'poor' | 'average' | 'good' | 'excellent'

Wall/ceiling insulation quality: poor (uninsulated garage), average (standard drywall), good (insulated interior), excellent (server room with vapor barrier)

ambient_temp_fnumber

Ambient temperature outside the room in degrees Fahrenheit

target_temp_fnumber

Desired room temperature in degrees Fahrenheit

sun_exposure'none' | 'partial' | 'full'

Solar heat gain: none (interior/basement room), partial (one exterior wall with window), full (multiple sun-facing windows)

Response

Computed result for cooling_btu

toolstring required
versionstring required
computed_atstring date-time required

Changes

No recorded changes to this operation across all 1 revision of this API.