Gas cooling screening analysis tool

Provides a rough estimate of the annual cost savings and payback period for a gas-fired chiller relative to a conventional electric compressor-based chiller, based on your cooling load and the electric and gas prices you enter.

Fluorescent high-bay lighting savings calculator

Estimates the annual energy savings and simple payback period achievable by replacing existing metal halide lamps with fluorescent lamps in high-bay applications.

Screening tool for indirect lighting

Compares the total installed costs, annual operating and maintenance costs, and cooling costs of up to three direct and indirect lighting strategies. It also estimates a simple payback period for the indirect lighting alternatives.

Energy-efficient track lighting savings calculator

Estimates the annual energy cost savings and payback periods for metal halide and other energy-efficient alternatives to halogen track lights. It also estimates total costs of ownership for each lighting technology over a 10-year period.

Personal dimming cost-effectiveness calculator

Estimates the bill savings and payback period for a lighting system that permits individuals to adjust fluorescent lighting to their personal preference in an office setting.

Harmonic mitigating transformer cost-effectiveness evaluation tool

Estimates the annual energy savings and simple payback period for installing a harmonic mitigating transformer versus a conventional distribution transformer.

Aerosol duct sealing calculator screening tool

Estimates the cooling, heating, and combined annual dollar savings that can be achieved by sealing leaks in HVAC ductwork.

Gas-fired water heater screening tool

Determines the energy consumption and payback periods for standard commercial and ultra-efficient commercial water heaters and compares them with consumption and payback for residential models. By necessity, this screening model makes simplifying assumptions, so use it for initial screening only.