[villagetinker]

Originally Posted by retiredguy123

Isn't the SECO surge protector supposed to protect both the inside and outside components of the HVAC system? A surge protector installed on the outside disconnect box is downstream of the house electrical panel which is located upstream of the disconnect box. So, what can the HVAC surge protector do that the SECO surge protector cannot do before the current reaches the disconnect box? In other words, why do you need two surge protectors? And, if the HVAC surge protector is better than the SECO surge protector, why not just replace the SECO surge protector with the HVAC surge protector at the house meter?

I am GUESSING the proposed HVAC surge protector would be installed at the disconnect for the HVAC unit. Actually, I have the SECO surge protector and with it there were several individual surge protectors. I believe the SECO unit does a reasonable job, as there was a close in lightning strike at the rear of my neighbors house. They had around $7000 in damages, we had none. I believe this was a combination of the main SECO surge protector, and all of the individual units.