You have a receiver, so protection options will be limited to surge protection, which is what you really need anyway. This is NEC (National Electrical Code) since 2024 for new construction and remodels. So NEC is SPD1 surge protector at the entry of your electric service, and SPD2 in any panels you have. So if you should have two panels you need a surge protector in each. If you happen to have solar panels then you need an SPD2 surge protector at the combiner. After that do not use surge protectors between units and the AC outlet. They will make matters worse, and they are next to useless anyway. So my strong recommendation for you is to have an electrician bring your home up to 2024 NEC.
As a bonus this protects all your appliances, furnaces, TVs even light bulbs now. Practically everything in your home contains microprocessors. Even your light bulbs have fragile ICs in them. I have spoken to two electricians who have both been to homes within the last year, that have had total wipe outs of practically every electrical device in the home after severe thunderstorms. With climate change these are getting worse and more frequent everywhere.