Sam Gorman

Estimate home heating load, cooling load, AC tons, airflow, and standard AC size from simple home details.

Calculate heat pump COP from heat output and electric power, plus optional gas break-even and Carnot temperature checks.

Estimate whole house fan CFM, attic net free vent area needed, vent gap, and the largest fan your vents can support.

Estimate ceiling fan cost per day, running month, and year using fan watts or an EnergyGuide yearly cost label.

Estimate furnace fuel cost by BTU rating, efficiency, run time, fuel price, and optional blower electricity.

Estimate space heater running cost from watts, hours, days, electricity rate, heater count, thermostat on-time, and months used.

Estimate electric heater cost from watts, hours, days used, $ per kWh, and thermostat on-time percent.

Estimate heat pump running cost from COP, HSPF2, SEER2, electric rate, backup heat, and current fuel comparison.

Estimate mini split cost per hour, month, and season from watts or BTU size plus SEER2, HSPF2, or COP.

Estimate portable AC cost per day, month, or season from watts, BTU and EER, run time, electricity price, and standby use.