How big of a heat pump will i need for 1200 square foot house?

The size of the heat pump you need for a 1,200 square foot house typically ranges from 2 to 4 tons, depending on factors such as insulation quality, local climate, and the home's layout. A general rule of thumb is to allocate about 20 BTUs per square foot, which would suggest a capacity of around 24,000 BTUs for your home. However, conducting a detailed load calculation or consulting with an HVAC professional is recommended for an accurate assessment tailored to your specific conditions.