Ground Heaters Inc. has introduced the S3000 Ground Heater, an economy version of its hydronic ground thawing and concrete curing equipment. The S3000 can thaw 4,500 square feet to a maximum 1-foot deep per day or warm 6,000 square feet of ground, indoors or out, to prepare for concrete placement. And it can be accessorized with Liquid-To-Air Heat Xchangers to provide clean, hot air for 120,000 cubic feet of workspace. For more information, visit www.groundheaters.com or call (231) 799-9600.