Even though I don't own those items as I rent an apartment, there is a stove that looks to be at least from the 70s or early 80s. And as for the refrigerator, probably the middle to late 80s. I don't really know. I do have a modern microwave but it doesn't work very well. I have to complain to the landlord about this because the microwave doesn't belong to me. The central heating and AC is probably at least 20 or 30 years old. At least the temperature on the wall is, but I don't know about the AC/Heating unit in the ceiling itself nor the machine that is outside my apartment connected to the AC/Heating unit. The machine outside is modern or at least looks modern but it sucks cause my electric bills averages about $80 a month. I wish I had just a AC box it'd cost LESS!
I have a lot of things that are not brand new but they aren't antiques at all. Most are no more than 15 years or less. I have three TVs, two came with CC so they must be from the 90s, the other TV doesn't, unless I use the CC box or the converter box to add CC to the third tv. The newest item in my apartment is probably my computer, LOL.