A

HVAC units; Water heaters for domestic use including tankless water heaters; and the components of the aforesaid goods

Installation of HVAC systems, HVAC cleaning services, HVAC duct cleaning services, HVAC maintenance services, consultation services in the field of HVAC installation, sizing, and maintenance, plumbing services, installation of plumbing and plumbing systems, maintenance of plumbing, consultation services in the field of plumbing installation and maintenance, installation and replacement services for water heaters, repair or maintenance of water heaters, consultation services in the field of water heater installations