Talk:Room temperature

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Red wine is supposed to be drunk at *cellar temperature* not room temperature, a good 10 degrees lower. Deleted. —Preceding unsigned comment added by (talk) 06:54, 27 December 2008 (UTC)

This page needs work. The body of this article seems to be taken from a hypothetical "Room Temperature vis-a-vis Scientific Experiments" page. Surely there are other relevant factoids about room temperature unrelated to the concerns of scientists conducting experiments in rooms; maybe it can be explained why room temperature is so comfortable for humans, or if there is a minimum or maximum comfortable or safe room temperature.

Ambient does not mean room temperature; it means surrounding temperature. Ambient temperature might be -40 C to an airplane designer.

Ambient temperature. Wouldn't that also include the temperature of the objects in the room. Which can be different to air temperature of the room. If I turn off my heater in the front room now the temperature would fall fast because the objects in the room are below that of the air temperature. At least until the heating system has been switched on long enough. —Preceding unsigned comment added by (talk) 15:26, 19 October 2010 (UTC)

Ambient temperature simply means "the temperature of the surroundings" and will be the same as room temperature indoors. This is simply wrong. What would be the point of living in an insulated, closed, conditioned space if it was the same temperature as the ambient (outdoor) temperature? Rarely are they the same; in winter, it's warmer indoors, and in summer, it's cooler. That's rather the point of having a conditioned space. Ian.macky (talk) 15:57, 12 November 2014 (UTC)

I might be accused of nit-picking, but I changed "300 kelvins" to 300 "Kelvin" in the Scientific Calculations section, as per proper form. —The preceding unsigned comment was added by (talkcontribs).

But uncapitalized plural is correct? Femto 11:48, 12 February 2007 (UTC)
The proper form is not to pluralise it so the point is moot. (talk) 13:01, 18 April 2008 (UTC)
As noted at Kelvin, since a kelvin is not measured relative to an arbitrary reference point like the Celsius and Fahrenheit scales, but is rather an absolute unit of measure which can be manipulated algebraically, it is indeed correct to use the plural form for more than 1 kelvin, just as the word "degrees" should not be used. I fixed it. ★NealMcB★ (talk) 19:10, 28 July 2011 (UTC)

Sorry, I try to be tolerant here, but it really is important to be in complete command of the language when writing an article - there are too many vague or incomprehensible formulations here, starting with the first sentence: "within enclosed space at which humans are accustomed" (what does that mean? - a question which it shouldn't be necessary to ask). Article quite simply needs rewriting in English. Also: as remarked elsewhere, "ambient" is not the same as "room" temperature, even on the ground. —Preceding unsigned comment added by (talk) 11:10, 26 October 2008 (UTC)

Whose standard?[edit]

Where do you get the standard room temperature is 22 °C? I more often see 20 °C called standard room temperature, and have seen other values as well--but I don't recall ever having seen 22 °C called by that name. Gene Nygaard 02:37, 30 Dec 2004 (UTC)

Human comfort[edit]

- human comfort is a debatable subject.

I'm from caribbean, living on USA (south florida 8-D ), and I prefer something around 78°F (25°C) inside or 90°f (32°C) and up outside, to "feel comfortable". — Preceding unsigned comment added by (talk) 15:57, 20 May 2012 (UTC)

At 20°C hands are too cold to type comfortably. @ 22°C you can sit in a T-shirt all day. However, from a scientific point of view 1) 20°C=68°F exactly, thus, convenient. Another reason, "By law, residential owners must provide sufficient heat between October 1 and May 31. During this period, between 6:00 a.m. and 10:00 p.m., if the outside temperature is below 55 degrees Fahrenheit, owners must heat apartments to at least 68 degrees Fahrenheit."  :) (DL, 23 Oct 2005).

I'm perfecly comfortable naked in my room at 26-27°C, but I need body full clothing when it's 20°C or less in my basement room near the cold ground at this time of year. I think a section on human comfort would be appropriate in this article, so I've halved Cheriyan's above question and put it together with mine. 06:03, 7 October 2006 (UTC)
"By law, residential owners must provide sufficient heat between October 1..." By whose law? I'm asuming that is some United States law due to the use of Fahrenheit. But where in the US? Is it a national law, state level, or something else? Is it a statute, a common law, a regulation? It sounds practical and I agree it is a fair statement, but you need to cite that. This link states a law for Connecticut (and a few others) that is similar in purpose, but different in numbers. --Trakon 08:28, 9 November 2006 (UTC)
This depends on local climate and the acclimatisation of the individual. Personally based in northern England I find 20°C a little on the warm side. That is not an uncommon opinion around here. Too cold to type would be below about 15°C. In short you can't make hard and fast rules about such things. (talk) 13:06, 18 April 2008 (UTC)
Agreed - I'm also in northern England; the temperature in this room is now dropping below a comfortable level for wearing a tshirt (our boiler's broken and it's snowing outside), and is at 14.6°C. Normally I'd keep it at 16-17° or so - although I'd say that it's still easily warm enough at 14.6° to type :-) -- (talk) 18:46, 24 November 2010 (UTC)
You guys wear t-shirts at 15°C?! Are you hyperthyroid or something? :-P WACGuy (talk) 01:15, 3 January 2011 (UTC)
I've always considered "room temperature" to be 61°F, approx 16°C, that's what I recall being marked on thermometers here in the UK (before they started being imported). 15°C is certainly fine to be wearing a T-shirt in; many people from Northern England wear T-shirts outdoors all year round! (talk) 13:04, 26 October 2011 (UTC)

who is Rankine?[edit]

A minor quibble, but surely Kelvin - the SI unit of temperature - should be mentioned before the Rankine or "absolute Fahrenheit" scale which is virtually unheard-of outside the USA

Even in the US where I am, reading about computational physics a lot, I've never seen that unit (talk) 15:41, 12 March 2014 (UTC)


It says 20 to 23 degrees C but 293 to 298 K. There is a mistake here.

If there is a mistake, please correct it and cite it if possible or required. Thebestkiano 15:45, 18 October 2007 (UTC)

Corrected upper temp. K=C+273 --BlindEagletalk~contribs 16:27, 18 October 2007 (UTC)

I believe the error was in the degrees C line and not in the Kelvin line. Most common definitions in the fields of both chemistry and biology list room temperature as between 20 and 25 degrees C (or 293 to 298 K). (talk) 02:06, 13 February 2009 (UTC)


I have just a small problem with this statement: "A study carried out at the University of Uppsala (Sweden)[2], on indoor air quality and subjective indoor air quality (SIAQ) in primary schools, states that perception of high room temperature was related to a poor climate of cooperation. To achieve a good SIAQ, it recommends room temperature should be at a maximum of 22.0 °C (71.6 °F)." The way this idea is stated infers that the poor climate of cooperation may lead to the perception of high room temperature, or vice versa. It's simply a correlational study, which I don't think has much to do with the premise of the article. Niubrad 06:08, 19 October 2007 (UTC)

I have a problem with the mere inclusion of "ambient" temperature in this article. The eloquent writing doesn't conceal the fact that the author could not have consulted any dictionary to learn the correct meaning of the word, one which may "feel" like it is related, in meaning, to "room temperature" but is not, at all. A quick visit to finds several fine definitions, including the following:

am⋅bi⋅ent    /ˈæmbiənt/ Show Spelled Pronunciation [am-bee-uhnt] –adjective 1. of the surrounding area or environment: The tape recorder picked up too many ambient noises. The temperature in the display case was 20° lower than the ambient temperature. 2. completely surrounding; encompassing: the ambient air. Origin: 1590–1600; (< MF) < L ambient- (s. of ambiēns, prp. of ambīre to go around), equiv. to amb- ambi- + -i- go + -ent- -ent

[1] --Rsmg (talk) 12:06, 27 April 2009 (UTC)


  1. ^ "ambient." Unabridged (v 1.1). Random House, Inc. 27 Apr. 2009. <>

Rankine and Kelvins[edit]

We're talking about room temperature here, why not only use units that I'm sure 99% of the human population use to measure temperature, Fahrenheit and Celsius. I think adding Kelvins and Rankine is just too much unnecessary info. Wikidan829 (talk) 02:29, 13 February 2008 (UTC)

Kelvin is one thing, but Rankine? That scale is irrelevant to almost everyone, with the exception of a few U.S. engineering fields. Kelvin is used throughout science, the U.S. included. (talk) 02:46, 21 February 2009 (UTC)

Shouldn't there be a reference for Scientific room temperature? —Preceding unsigned comment added by (talk) 16:32, 9 May 2009 (UTC)

Room Temperature in cooking[edit]

Room temperature in cooking may often be determined by holding left index finger in the air, and right index in subject. i.e. to determin water, right index should be held under running spout, or cake batter, index finger should be held in batter. left handed people can use opposite index fingers. —Preceding unsigned comment added by (talk) 15:36, 17 July 2008 (UTC)

What??? (talk) 15:43, 12 March 2014 (UTC)

Room temperature in GSP[edit]

it is 0~30 degree C. —Preceding unsigned comment added by (talk) 12:40, 3 February 2009 (UTC)

Temperature & Pharmaceutical Science[edit]

The U.S. Pharmacopeia (USP/NF) defines several terms relating to the storage of pharmaceutical products. 20°C to 25°C (68°F to 77°F) is given as the definition of "controlled room temperature", and you will see this listed on many pharmaceutical products.

"Warm" is defined as any temperature between 30°C and 40°C (86°F and 104°F).

"Excessive Heat" is any temperature above 40°C (104°F).

"Cool" is any temperature between 8°C and 15° (46°F and 59°F), and any temperature not exceeding 8°C (46°F) is defined as "cold". Quintab (talk) —Preceding undated comment added 21:01, 9 September 2009 (UTC).

Room Temperature Range[edit]

I changed a few numbers around in this article. The range originally given for room temperature, 20° to 29°C, is way too high from my experiences. In the winter time, I set the thermostat to about 60°F (15-16°C), and in the summer time, I set it to 77°F (25°C), so 15-25°C seemed like a more appropriate range. I don't know about you but with those settings, I feel comfortable year round. ~June 2, 2011 19:31 EDT (UTC-4)

...where do you live, Svalbard or Baffin Island? Because I thought room temperature is supposed to be 28. (talk) 20:26, 16 June 2015 (UTC)

Simple English Wikipedia[edit]

The article on Room temperature at the Simple English Wikipedia looks somewhat better than this one... I'll copy some material over, unless someone else does it first (with proper attribution!), when I get a chance. Allens (talk) 15:46, 10 November 2011 (UTC)

Done. Allens (talk) 17:01, 11 November 2011 (UTC)
The above attribution was moved from the article to the Talk page to avoid cluttering the article with the editing history record. —BarrelProof (talk) 22:05, 7 January 2015 (UTC)

Error - typo[edit]

Section 2 in "comfort levels" cites 'W mids PH Obs (UK)' as 118 (!!) degrees should be 21C according to the article quoted (talk) 19:21, 18 September 2012 (UTC)

From article: According to the West Midlands Public Health Observatory (UK),[1] an adequate level of warmth for older people (aged 58 and above) is 23 °C (73 °F) in the living room, and 24 °C (75 °F) in other occupied rooms. Yet the cited PDF says: This means a temperature of 21°C in the living room and 18°C in other occupied rooms. Where did the 23°/24° come from? Yeryry (talk) 15:05, 7 January 2015 (UTC)

Clearly, someone was vandalizing the numbers. I corrected those I could easily verify by following the citation links for WMPHO and BBC News. —BarrelProof (talk) 21:26, 7 January 2015 (UTC)