3 calculators in this category
- Fuel Energy Content (BTU) Converter CalculatorEIA higher heating values (HHV)Fuels are sold in a dozen incompatible units — cubic feet, ccf, therms, gallons, cords, tons, kilowatt-hours — and none of them…
- Water Heating Energy & Cost CalculatorDOE Uniform Energy Factor (10 CFR Part 430)Water heating is usually the second-largest energy end use in a home, and it is the one people guess at most. This calculator…
- Insulation Upgrade Savings & Payback CalculatorDegree-day conduction method; IECC / ASHRAE 90.1 prescriptive R-valuesAdding insulation buys you a reduction in the rate heat leaks through an assembly, and the money you save is that reduction…
Which one do you need?
- Fuel Energy Content (BTU) Converter Calculator
- Convert any fuel quantity into BTU, MMBtu, therms, kWh, GJ and barrels of oil equivalent using standard heating values for gas, propane, oil, wood and coal.
- Water Heating Energy & Cost Calculator
- Work out what it costs to heat water: BTU required, cost per gallon and annual cost for electric, gas, tankless and heat pump water heaters and compare fuels.
- Insulation Upgrade Savings & Payback Calculator
- Calculate annual heating and cooling savings and simple payback from raising an assembly R-value, using degree days, fuel price and equipment efficiency.