🔥 Heat

❄️Air Conditioner Cooling Load Calculator Estimate the air-conditioner capacity in BTU/h, kW and tons for a room from its size, sun exposure, occupants and appliances, free online. ⛰️Boiling Point at Altitude Calculator Estimate the boiling point of water at a given altitude, free online. 💧Condensation Risk (Surface Dew Point) Calculator Check whether moisture will condense on a cold surface such as a window or wall from room temperature, humidity and surface temperature, free online. 🧱Conduction Heat Loss Calculator (Fourier's Law) Calculate heat loss through a material using Fourier's Law of conduction, free online. 🌡️Entropy Change Calculator Calculate entropy change for heat transferred at a constant temperature, free online. 🔥Furnace / Boiler Efficiency Upgrade Calculator Work out the savings and payback of replacing an old furnace or boiler with a higher-AFUE model, free online. ♨️Heat Pump COP & Running Cost Calculator Calculate a heat pump's coefficient of performance (COP), its Carnot limit and the running cost compared with resistive heating, free online. 📉Heating & Cooling Degree Days Calculator Compute heating degree days (HDD) and cooling degree days (CDD) from a list of daily mean temperatures, free online. 🧯Insulated Pipe Heat Loss Calculator Calculate heat loss per metre and in total from an insulated pipe, free online. 🏠Insulation Energy & Cost Savings Calculator Estimate the yearly energy and money saved by upgrading insulation from the change in U-value, area and heating degree-days, free online. ❄️Latent Heat Calculator Calculate the heat energy needed for a phase change using mass and latent heat, free online. ♨️LMTD (Heat Exchanger) Calculator Calculate the log mean temperature difference and heat duty of a heat exchanger, free online. 🥤Mixing Temperature Calculator Calculate the final temperature when two substances are mixed, free online. 🧊Newton's Law of Cooling Calculator Calculate an object's temperature at a given time as it cools toward ambient temperature, free online. 🔥Radiant Heat Transfer Calculator Calculate heat radiated by a surface using the Stefan-Boltzmann law, free online. 🌡️Radiator Size for a Room Calculator Calculate the heat output a room radiator needs and correct it for flow and return temperatures, free online. ❄️Room BTU Calculator Estimate the cooling or heating BTU needed for a room, free online. 🌡️Specific Heat Calculator Calculate heat energy from mass, specific heat capacity and temperature change, free online. 📏Thermal Expansion Calculator Calculate the change in length of a material due to temperature change, free online. 🧱U-Value & Heat Loss Calculator Calculate the U-value of a layered wall and the heat lost through it, free online. 🧱Wall U-Value & R-Value (Layers) Calculator Calculate the total thermal resistance, U-value and R-value of a wall, roof or floor built from several layers, free online. 🚿Water Heating Energy, Time & Cost Calculator Find the energy, time and cost to heat a volume of water with an electric heater or boiler, free online.