When you say "low electricity" what do mean?
Plug in your information and see for yourself what the costs will be and any potential profits will be with a mining calculator.
http://www.coinwarz.com/calculators/bitcoin-mining-calculator
You may want to check out a few different calculators. Some give you more/better information than others. Combined, they will give you the big picture.
The speed of your internet connection is inconsequential. Mining is not internet intensive. Just need a stable internet connection.
Air conditioning may not be the issue. AC will be fine to cool off the room, but you REALLY need a way to vent the heat outside of the room. That is one of the most important, IMHO.
Thanks for you opinion,
I meant "cheap electricity" there,
will work on venting the heat outside,
But is it profitable to start with just one miner nowadays on these conditions?
I have no way of answering that question if you don't say what your electric cost is. That was why I asked.
I don't care if you call it "low" or "cheap". What is the cost?