Heat contractor ne na high karshen high gudun karfafa saukar da biyu iska thermal contractor, da iska yawa babban zafin jiki daidai, amfani da zagaye dumama bututun, lantarki babu * m gudun, atomatik zazzabi daidaitacce, m jihar matsin lamba sarrafawa, tsari mai sauki da kwanciyar hankali da amintacce, low amo, daban-daban daidaitawa mai sauki da sauki, marufi sakamako mai kyau da sauri.