The industry's job and pay gains outpace overall economy. Survey finds contractors plan to add workers, invest in training and technology in 2019 but expect difficulty in filling positions.

Commercial electric storage water heater shipments decreased 31% in November 2018 to 10,125 units.

Contractors expect demand to expand in every market segment this year amid expectations of an infrastructure deal as they increase compensation and adopt labor-saving technologies to cope with worker shortages.