How much house can I REALLY afford?

I am looking to buy a house. According to this calculator thingy I found on my credit union’s website, I can afford approximately 2,200 a month on a mortgage payment.

That seems high to me, but I don’t want to be breaking my back to pay for the house.

I will be able to put some money down, but surely not 20%. Perhaps 5% or 10%?

I will live there for a long time, or until the house value raises enough to make sense for me to leave.

I just want to know what kind of house 1500–1700 a month will buy me.