BTU/(h⋅∘F)\text{BTU/(h}{\cdot}^{\circ}\text{F)}

BTU per hour Fahrenheit

Thermal conductanceexact by definition

The BTU per hour per Fahrenheit degree is the customary US unit of thermal conductance, equal to exactly 0.52752792631 W/K. The factor is exact by definition: the International Table BTU of 1055.05585262 J divided by 3600 seconds and by the 5/9 K Fahrenheit degree gives a terminating decimal. It is the product of a U-value in BTU/(h·ft²·°F) and an area in square feet, and it is what appears in a building's UA total.

Watch out: The Fahrenheit degree here is an interval, so no 32 enters the conversion. A wall with a UA of 100 BTU/(h·°F) loses 7000 BTU/h across a 70 F° difference, whatever the absolute temperatures happen to be.

1 BTU/(h⋅∘F)\text{BTU/(h}{\cdot}^{\circ}\text{F)} 0.52752793 W/K\text{W/K}

One btu per hour fahrenheit in every thermal conductance unit

527,528microwatt per kelvin (μW/K)
527.528milliwatt per kelvin (mW/K)
1BTU per hour Fahrenheit (BTU/(h·°F))this unit
1BTU per hour Rankine (BTU/(h·°R))
0.527528watt per kelvin (W/K)
0.527528watt per Celsius degree (W/°C)
0.453896kilocalorie per hour Celsius (kcal/(h·°C))
0.000527528kilowatt per kelvin (kW/K)
0.000527528kilowatt per Celsius degree (kW/°C)
5.27528e-07megawatt per kelvin (MW/K)