BTU calculators, AC tonnage, furnace sizing, ductwork, heat load, and mini-split calculators.
Calculate how many BTUs you need to heat or cool a room based on its size, insulation level, climate zone, and sun exposure.
Determine the right air conditioner size in tons for your home based on square footage, climate, and home characteristics.
Calculate the right furnace size for your home based on square footage, climate, insulation, and desired temperature rise.
Calculate the correct duct size for each room based on airflow (CFM) requirements and duct length.
Perform a simplified Manual J heat load calculation for your home to determine heating and cooling requirements.
Calculate the required airflow in CFM for each room based on room size, BTU load, and temperature difference.
Determine the right mini-split (ductless) system size for your room or zone based on area, climate, and usage.