Is this for natural gas & what is the going rate to install it?

Install rates vary from contractor to contractor and region to region. Since we don’t provide that service, it’s hard to speculate. The model you are looking at GPH1460H41 is an all-electric heat pump. Here is the gas with standard cooling model in 5 tons: https://hvacdirect.com/packaged-rooftop-units/self-contained-units/filter/nominal_capacity/5-ton-1.html. (If link does not work, please click "Read More" listed below)

If you have any further questions, please call us and we will be happy to assist you.