To determine which Amana unit is suitable for your house, you should first determine your square footage of the area you will be using the heat pump unit. Once you have figured that, you can use this handy chart to determine how many BTUs you will need for the room you are using it in.
Square FootageBTUs 100 to 1505,000 150 to 2006,000 200 to 2507,000 300 to 3508,000 350 to 4009,000 400 to 45010,000 450 to 55012,000 550 to 70014,000 700 to 1,00018,000 1,000 to 1,20021,000 1,200 to 1,40023,000 1,400 to 1,50024,000 1,500 to 2,00030,000 2,000 to 2,50034,000