A:Answer According to Eero website, 1 Eero Pro 6 can cover up to 2000 sq ft, depending on your home style (ranch,duplex,age, etc) you may be fine with 1 Eero Pro 6. My house is about 2500 sq ft, and I’m fine with 1 Eero Pro 6set up in the middle hall way on the second floor. You do save about $50-60, if you buy the 2 pack vs the single pack, especially if you find yourself needing another Eero pro 6 later, then the 2 pack makes sense. You don’t have to use both units upfront if you don’t need it. But if you do, you already have it. Just a thought.