HVAC sizing, ventilation, renewable energy, storage, EV charging, utility cost, emissions, and efficiency calculators.
Phase 11.5
HVAC & Energy Engineering Intelligence
Use HVAC and energy calculators for BTU sizing, air flow, duct size, heat load, cooling load, furnace and boiler sizing, heat pump estimates, insulation, ventilation, solar savings, wind power, battery storage, EV charging, lighting cost, energy consumption, carbon emissions, appliance usage, efficiency, and utility cost planning.
HVAC and energy planning note
HVAC and energy calculators on ToolsBing provide preliminary planning estimates only. Actual equipment selection, code compliance, indoor air quality, combustion safety, ventilation, refrigerant work, electrical connection, and energy-system design should be verified by qualified professionals using local codes, manufacturer data, Manual J/S/D methods where applicable, and site-specific measurements.
What Phase 11.5 adds
Each tool shows input meaning, formula context, result units, planning guidance, and verification steps.
Support rough sizing and comparison before detailed engineering, load calculation, site inspection, or contractor review.
HVAC & energy engineering calculators
BTU Calculator
Estimate heating or cooling BTU needs from area, climate, insulation, and ceiling height.
Open calculator →Air Flow Calculator
Calculate air flow from room volume, air changes, duct velocity, or ventilation requirements.
Open calculator →Duct Size Calculator
Estimate duct area and equivalent round duct size from CFM and target velocity.
Open calculator →Heat Load Calculator
Estimate heating load from area, temperature difference, insulation factor, and infiltration allowance.
Open calculator →Cooling Load Calculator
Estimate cooling load from area, occupancy, solar gain, equipment load, and insulation assumptions.
Open calculator →Furnace Size Calculator
Estimate furnace output and input size from heating load and equipment efficiency.
Open calculator →Boiler Size Calculator
Estimate boiler capacity from heat load, pickup factor, and system efficiency.
Open calculator →Heat Pump Calculator
Estimate heat pump capacity and operating cost from load, COP, runtime, and electricity price.
Open calculator →Insulation Calculator
Estimate R-value improvement, heat-loss reduction, and potential energy savings.
Open calculator →Ventilation Calculator
Estimate ventilation CFM from occupancy, floor area, or air-change requirements.
Open calculator →Solar Savings Calculator
Estimate solar energy production, bill savings, and simple payback from system size and local assumptions.
Open calculator →Wind Power Calculator
Estimate wind turbine power from air density, rotor area, wind speed, and efficiency.
Open calculator →Battery Storage Calculator
Estimate battery backup duration from usable capacity and connected load.
Open calculator →EV Charging Calculator
Estimate EV charging time and energy cost from battery size, charger power, and electricity rate.
Open calculator →Lighting Cost Calculator
Estimate lighting electricity cost from wattage, fixtures, usage time, and electricity rate.
Open calculator →Energy Consumption Calculator
Estimate kWh consumption from power demand, runtime, quantity, and operating days.
Open calculator →Carbon Emissions Calculator
Estimate carbon emissions from energy use and emissions factor.
Open calculator →Appliance Usage Calculator
Estimate appliance energy usage and cost from wattage, runtime, and frequency.
Open calculator →Energy Efficiency Calculator
Estimate efficiency percentage and loss from useful output and energy input.
Open calculator →Utility Cost Calculator
Estimate utility cost from consumption, rate, fixed charges, taxes, and billing period.
Open calculator →How to use these calculators
Start with realistic building dimensions, climate assumptions, utility rates, equipment efficiency, runtime, and system constraints. Use the estimates for early planning, then verify with qualified design methods, manufacturer data, measured site conditions, and local code requirements.