manufacture direct expansion geothermal heat pumps. Direct expansion heat pumps use copper tubing buried in the ground filled with freon. Installation only requires a 4' x 4' x 2' deep pit. Minimal surface disturbance. Systems installed in 1985 still running strong- minimal maintenance. Unique commercial grade components assure high efficiency, low-maintenance and high reliability. Talk to our customers: new ones and some with over 25 years experience. Ten year warranty all parts and labor. Qualifies for 30% federal and state tax credit. We assist with applications.