A grand Dampp-Chaser (costing $580 + tax with installation) includes 2 dehumidifier bars, a humidifier with smart heater bar, a watering tube, a warning light panel, a watering can, and a bottle of humidifier additive. The owner must periodically add a cap full of additive in a can of water to the humidifier through the watering tube. One annual technician service is important to keep the system clean and to change humidifier pads (which gradually clog with minerals).
An UnderCover ($225 + tax with installation) doubles the grand system’s efficiency by buffering between ambient atmosphere and what the humidifier or dehumidifiers provide under the soundboard.
An upright Dampp-Chaser ($530 + tax with installation) works from inside the case, eliminating the need for a covering. An UnderCover may be added as a back cover, though, if room heater proximity is a problem.