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timbit42 · 2023-01-12 13:22:07

Probably F. New heat pumps are usually good to -20C or -25C, which matches -5F to -10F. My heat pump is 11 years old and is good to -15C.

sampo | karma 11354 | avg karma 4.19 · | 2023-01-12 06:21:22

> modern cold-climate heat pumps can heat a home efficiently even when the temperature drops below -10 degrees.

-10F is -23C.

Edit: I first put "-10 f to c" to google, and google converted it to "10 fahrenheit is -12 celcius".

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FireBeyond | karma 18718 | avg karma 2.51 · | 2013-01-29 22:55:34+00:00

Most likely -8F, per my comment upthread.

hanniabu | karma 4817 | avg karma 1.3 · | 2024-05-13 16:47:21

F is nice b/c it's pretty much on a 0-100 scale. 0 is really cold, 100 is really hot. Anything below 0 or about 100 is pretty much death without proper care.

coredog64 | karma 3819 | avg karma 2.1 · | 2020-10-13 15:58:34+00:00

-40C or -40F?

raverbashing | karma 22421 | avg karma 1.64 · | 2019-07-21 07:27:16

My heuristic goes like this

20C ~ 70F (ok it's 68F but close enough)

a variation of +10F is +5C (same for minus)

Of course you can remember that 32F = 0C, that helps

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michaelcampbell | karma 4818 | avg karma 1.64 · | 2022-03-20 17:18:38

Well, 32F is 0C if we're going to go that route.

drivers99 | karma 1918 | avg karma 2.32 · | 2019-08-12 16:34:07

Since he's talking in F (e.g. 105), when he says sub-zero, he means -18C or lower. Or did you mean -10F?

huytersd | karma 1321 | avg karma 0.84 · | 2024-03-03 23:46:00

Clear F. I don’t see you passively cooling anything to below freezing when it’s 36C outside.

singingfish | karma 1107 | avg karma 1.79 · | 2020-11-23 08:12:17+00:00

-20c and -70c from what I remember

H1Supreme | karma 1017 | avg karma 2.15 · | 2021-08-29 09:26:50

> with rear exhaust temperatures around 3 to 5 degrees higher

Is that C or F? I'm going to assume Fahrenheit. Also, is that bad? In other words, did they measure the rest of the unit to see if it was hotter or cooler? Maybe they've directed more heat to the exhaust. Which is the whole point, after all.

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technothrasher | karma 4566 | avg karma 4.19 · | 2019-07-21 07:05:38

For setting the a thermostat, it's not that hard to simply switch your brain over and know what's comfortable inherently in either F or C without doing a conversion back and forth. For accurate conversion, if c=(f-32)/1.8 or the converse is really that troublesome, Google can help you out.

dzhiurgis | karma 3122 | avg karma 0.65 · | 2021-02-15 06:05:59+00:00

Modern ones and designed for purpose go to -20C.

DanBC | karma 56529 | avg karma 2.13 · | 2015-01-12 16:28:16+00:00

-24F is -31C

-58F is -50C

-90F is -67C

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cm2012 | karma 9189 | avg karma 3.21 · | 2023-09-17 10:13:07

F is better for use in human temperature comfort than C.

shapefrog | karma 2323 | avg karma 1.61 · | 2023-01-12 06:24:26

-10F is -23.33C

InCityDreams | karma 415 | avg karma 0.36 · | 2023-02-18 06:03:14

7.88f is -13.4c.

huseyinkeles | karma 657 | avg karma 4.63 · | 2020-11-13 02:15:02

+ 3°C

Don’t forget to add the unit.

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pbhjpbhj | karma 20396 | avg karma 1.24 · | 2023-01-04 03:48:05

I'm confused, are all your temperatures in Celsius except the 120F (~50°C). I assumed the -5 was -5°C but the use of F later suggests it could be -20°C.

mikeash | karma 74524 | avg karma 3.52 · | 2012-12-29 01:32:34+00:00

F = C * 2 + 30

Gets you to within a couple of degrees for commonly experienced temperatures, plenty close enough for most purposes. 45C ~= 120F. The true value is 113F.

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