11 Oil burners, oil ignition transformers, and burner air tube combinations for home, industrial, and commercial furnaces, heating boilers, swimming pool and spa heaters, gas clothes dryers, gas cooking ovens, gas grills, gas space heating apparatuses, and water heaters; Heat exchangers, not being parts of machines, for use with home, industrial, and commercial furnaces, heating boilers, swimming pool and spa heaters, gas clothes dryers, gas cooking ovens, gas grills, gas space heating apparatuses, and water heaters; Gas and oil heating installation modules for home, industrial, and commercial furnaces; Burner components, namely, structural replacement parts for gas and oil burners for use in home, industrial, and commercial furnaces, heating boilers, swimming pool and spa heaters, gas clothes dryers, gas cooking ovens, gas grills, gas space heating apparatuses, and water heaters