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Convert cooling capacity from BTU per hour to refrigeration tons. Adjust for equipment efficiency and load conditions to estimate effective tonnage for HVAC sizing.

Convert cooling capacity in tons to BTU per hour, with optional runtime and efficiency inputs to estimate total BTU delivered over time and adjusted output.

Convert electrical power in watts to BTU per hour, with optional efficiency and operating time inputs to estimate effective heat output and total BTUs over a usage period.

Convert cooling or heating capacity from BTU per hour to watts, with options to show electrical input watts based on equipment efficiency using EER or COP.

Convert electrical power in kilowatts to BTU per hour with optional efficiency and runtime inputs for estimating heat output and total BTUs over a period.

Convert cooling or heating capacity from BTU per hour to kilowatts, with options to view electrical input power based on system efficiency.

Estimate heating or cooling capacity in BTU per hour from airflow in CFM using the standard HVAC relationship BTU/hr = 1.08 × CFM × temperature difference. Choose heating or cooling and enter airflow, supply air temperature, and return air temperature.

Estimate required airflow in CFM from cooling capacity in BTU/hr using the sensible heat equation with configurable temperature difference and elevation adjustment.

Convert heating capacity from MBH to BTU per hour, with options to calculate from a single MBH value or multiply by quantity for total BTU/h output.

Estimate the cooling or heating capacity needed in BTU per hour based on room size, ceiling height, insulation quality, sun exposure, and number of occupants.

Estimate the recommended cooling capacity in BTUs per hour for a room based on area, ceiling height, sun exposure, climate, and occupancy.

Estimate the heating capacity needed in BTUs per hour for a room based on floor area, ceiling height, insulation quality, climate severity, and window count.

Estimate the cooling capacity needed for a room in BTU per hour based on room size, ceiling height, sun exposure, climate, and number of occupants.

Estimate the cooling capacity in BTUs needed for a room based on room size, ceiling height, sun exposure, insulation quality, and number of occupants.

Estimate the cooling capacity needed for a house or room in BTUs per hour based on floor area, ceiling height, climate, insulation quality, and sun exposure.

Estimate the heating BTU requirement for a garage based on floor area, ceiling height, insulation level, climate severity, and garage door exposure.

Estimate the heating capacity needed for a shop or workshop in BTUs per hour based on floor area, ceiling height, insulation quality, climate severity, and desired temperature rise.

Estimate the heating capacity in BTU/hr needed for a greenhouse based on dimensions, desired indoor temperature, expected outdoor temperature, and greenhouse covering insulation quality.

Estimate recommended cooling capacity in BTUs based on room size, ceiling height, sun exposure, insulation quality, and occupancy. The calculator returns total BTUs and reflects common HVAC sizing adjustments per square foot.

Estimate the recommended BTU capacity for heating or cooling a room based on square footage, ceiling height, insulation quality, sun exposure, and climate severity.

Estimate the recommended mini split cooling capacity in BTUs based on room size, ceiling height, insulation quality, climate, and sun exposure.

Estimate the recommended ductless mini split capacity in BTU/hr based on room size, ceiling height, insulation quality, climate severity, and sun exposure.

Estimate the recommended mini split heat pump capacity in BTU/hr based on room size, ceiling height, climate, insulation quality, and sun exposure.

Estimate the recommended mini split cooling capacity for a room in BTUs per hour using room size, ceiling height, insulation quality, sun exposure, and room occupancy.

Estimate the recommended mini split size and installed cost range for a garage based on square footage, insulation, climate, ceiling height, and whether the garage is attached or detached.

Estimate the electricity use and operating cost of a mini split system based on cooling capacity, efficiency, daily runtime, local electricity rate, and operating days per month.

Estimate the operating cost of a mini split system based on cooling capacity, efficiency, daily runtime, electricity rate, and seasonal usage.

Estimate the electricity cost to run a mini split air conditioner or heat pump based on system wattage, daily runtime, local electricity rate, operating days, and efficiency mode.

Estimate the installed cost of a ductless mini split system based on number of indoor zones, system capacity, efficiency rating, installation complexity, and regional labor pricing.

Estimate the total outdoor unit capacity needed for a multi zone mini split system based on the number of rooms, average room size, ceiling height, insulation quality, and climate severity.