COMMERCIAL WATER HEATER SPEC MADE EASIER RightSpec® Tools Can Save Time and Effort on Your Next Commercial Water Heater Spec. You have to weigh a lot of factors when specifying the right water heater for a commercial job. Fortunately, there's RightSpec® Tools. RightSpec® is the most comprehensive and intuitive electronic sizing program available today. RightSpec® will make your next commercial water heater spec easier - and save you time, effort and money in the process. RightSpec® Tools are easy to use: 1. Enter the type of commercial building (apartments, beauty salon, restaurant, etc.) 2. Provide system settings like installation type, fuel type, ventilation, if American Society of Mechanical Engineers (ASME) is required and if you want an environmentally-friendly Ultra Low NOx installation.