Lochinvar & A.O. Smith 100271921-Ignition Transforme...Lochinvar & A.O. Smith 100271921-Ignition Transformer Kit | PartsHnCThe Lochinvar & A.O. Smith 100271921 Ignition Transformer Kit is a vital component utilized in gas-fired HVAC systems, particularly in furnaces and boilers.#Lochinvar #LochinvarParts #100271921 #Transformerkit #PartsHnC