I am not really happy with Penn Foster HVAC program. I made three question and neither weren answered right.Like I told them that I saw a heat pump with only one metering device and they told me to look better that there should be another one some where.The I found out that there are two way flow txv. Also they do not offer any type of training video.So basically you paying around $ 700.00 for a book and a $12.00 multimeter that they send you at the end of the course and the $50.00 for the EPA test. read full review »