What size heat pump for an 1800 sq ft house?

The size of a heat pump for an 1800 sq ft house typically ranges from 2 to 4 tons, depending on factors such as local climate, insulation quality, and the home's layout. A general rule of thumb is to allocate about 1 ton of heating and cooling capacity for every 600 to 800 sq ft of living space. To determine the most accurate size, it is advisable to conduct a Manual J load calculation, which considers specific conditions and requirements of your home. Consulting with a HVAC professional can also ensure optimal efficiency and performance.