We stock a large range of parts for oil and the most most popular parts for gas most callouts are under an hour and fixed on the spot. Have that sinking feeling from a blocked drain, but want to clear it without a chemical storm? time to pour over the possibilities. Unit c1, anchorage business park. Ranges from 28,000 to 140,000 btus to meet your heating needs with a 5 to 1 turndown ratio, its modulating technology matches fuel consumption to demand to provide.