When changing the base or improved values on the refine screen, you must model it again to get the final results. You must also adjust the cost of the upgrade to reflect the correct type that you are recommending.

Upgrade Option 1: Newer Standard Electric Tank. If you are simply replacing the old electric tank with a newer more efficient tank.

Upgrade Option 2: Heat Pump Water Heaters (HPWHs), (this is the default recommendation if the Base unit is an electric tank). Upgrading from a standard electric tank to an electric HPWH.

Upgrade Option 3: Solar Thermal System with 80% solar fraction. (the solar covers 80% of the load and 20% is covered by the existing electric tank).