If you are curious to know you could test that out. Something like, can you believe how hot it is today, I'm so glad I got those solar panels installed, they wi

If you are curious to know you could test that out. Something like, can you believe how hot it is today, I'm so glad I got those solar panels installed, they will save me a ton. The response will be either Oh really, i never noticed. or yeh, but the cost too much. If you are the green type you could could also use that as a sales pitch.