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Revenue Recognition (Tables)

9 Months Ended

Sep. 30, 2020

Revenue from Contract with Customer [Abstract]

Schedule of Disaggregation of Revenue

Disaggregated net sales by major source:


			Three Months Ended												Nine Months Ended
			September 30, 2020						September 30, 2019						September 30, 2020						September 30, 2019
			(in thousands)
Rooftop units			$	102,750					$	78,432					$	312,725					$	255,532
Condensing units			6,304						4,416						15,307						13,622
Air handlers			5,805						6,523						18,068						18,150
Outdoor mechanical rooms			867						181						2,216						1,488
Water source heat pumps			6,770						8,751						14,269						21,417
Part sales			10,484						10,313						24,562						25,602
Other			1,792						4,884						10,704						10,948
Net Sales			$	134,772					$	113,500					$	397,851					$	346,759

Disaggregated units sold by major source:


			Three Months Ended												Nine Months Ended
			September 30, 2020						September 30, 2019						September 30, 2020						September 30, 2019
Rooftop units			4,372						3,520						12,179						11,079
Condensing units			593						418						1,447						1,291
Air handlers			534						552						1,545						1,669
Outdoor mechanical rooms			6						7						22						28
Water source heat pumps			1,847						1,311						5,109						5,977
Total Units			7,352						5,808						20,302						20,044