InstaHeat is a fuel heating company in Los Angeles, featured in many Arson cases in L.A. Noire. InstaHeat primarily manufacture residential and commercial water heaters and are headquartered at the InstaHeat Factory in Wilshire. InstaHeat is also mentioned in the Traffic case, "The Driver's Seat".
- Ivan Rasic - Manager of InstaHeat
- Walter Clemens - Residential Water Heater Installer
- Matthew Ryan - Residential Water Heater Installer
- Reginald Varley - Residential Water Heater Installer and Maintenance Worker