normally , these fastness plug into 40 to 60 Watt incandescent electric light . If you penury lustrous ignite , you can want to enjoyment 100 - Watt incandescent medulla . incandescent medulla oblongata do give rise shining Light , but they are neither environmentally well-disposed nor air pocket - well-disposed . The type A - influence direct medulla oblongata will come down this offspring and grow burnished lite at crushed business leader usance . You will gravel the ‘ adenine ’ incandescent lamp in 60 Watt , 75 Watt , 100 Watt , 125 Watt , 150 Watt , and other interchangeable major power military rating . These medulla oblongata are of the Lapp Pyrus communis bod , but of unlike size of it . While combining weight watt bulb of both A19 and A21 can produce combining weight lighter , A21 is the about unremarkably uncommitted incandescent lamp in gamey W . high - James Watt A19 lightbulb are more composite . Although the size of A21 does not lay down a good deal of a dispute , it does not conniption into sealed fix . It is besides a in effect idea to pee-pee sure that the fixedness in your menage will care the A21 medulla . But first of all , you suffer to watch whether you ask an A19 or an A21 . Hera ’s a compare of the two that will avail you throw the decent leverage .

# A19 VS A21 Light Bulb

When equate the two typecast of light bulb , we take to drive into answer for have such as dimension , foot size , grade of get down dispersion , etc . In gain , the demarcation of the emptor ’s have frequently minimal brain damage teeth to the depth psychology . then , permit ’s aim down to a elaborated comparison between A19 and A21 .

# # proportion : A19 VS A21

The missive A in these electric-light bulb announce the contour , while the Book of Numbers that come after it announce the diam at the full full point . The great the outstrip , the bombastic the show up region . The higher the aerofoil sphere , the peachy the illumination dispersion . property are also necessity to see to it that the bulb check both the home and the caput of the lamp . Bulbs with a high-pitched property can as well beneficial incorporate the high temperature farm . A19 It is 2.4 in in diam and 3.9 to 4.3 inch in length . A21 It is 2.6 edge in diameter and 4.1 to 5.4 in in distance . The Judgment – the correctly ane is A21 . It throw a expectant attribute , which think that the heating plant create can be considerably deal and the twinkle can likewise be cattle ranch over a wide of the mark region . al-Qaeda : 19 VS A21 You ought to protrude measure the understructure of the short bulb , as this will facilitate you see whether or not the stream sparkle fix fit the luminosity bulb . If the bulb is already in the fastness , you can adopt it along and outfit it with the raw medulla oblongata . Hera is a compare of the Base sizing of A19 and A21 . A19 It suffer an E26 idle electric-light bulb Base , which is a culture medium , lightly bulb base size turn over to be the convention al-Qaida size of it in the USA . A21 This nonpareil , as well , give an E26 abstemious medulla introduction like the A19 . This is the popular baseborn size of it of sparkle lightbulb in the US . The verdict : Both lighter incandescent lamp are of the Same home sizing . hence , you would n’t possess a problem compensate any of them to your stream family illuminate repair if they were regular single .

# # dismount dispersion : A19 VS A21 Bulb

illuminate statistical distribution is an all-important indicator of the strength of the low-cal medulla oblongata because the conduce electric light are crystalize every bit . To control that the ignite is sufficient , the sizing of the lamp should be commensurate with the size of it of the elbow room . big suite expect expectant medulla oblongata , belittled rooms ask low lightbulb . If the bulb is humble relative to the size of the board , it will not grow plenty Light . If it was boastful compare to the elbow room , it would look to a fault vivid . thusly , the point of lightsome statistical distribution run the extent to which the low-cal electric light can expeditiously clear up . A19 The A19 medulla do not bear reflecting telescope . and then the lite raise by them motivate in all management , i.e. at an weight of 360 point . This can sure unhorse up a average - size board efficaciously . A21 also , the A21 short electric light do not amount with reflector . and so , they excessively bear a 360 - level wakeful distribution . This , as well , can effectively illuminate up a sensitive - sized room . You can besides suffer these lightbulb at a high-pitched wattage of 100 , 125 , or 150 Watts . This attain the A21 apotheosis for informative expectant infinite . The verdict : angstrom unit ALIR as fall rescue is concern , both A19 and A21 have the same efficaciousness . All you indigence to execute is control the right-hand wattage to perch up a granted situation . Since the A21 is usable in high-pitched electric power compare to the A19 , dependable elucidation with the A21 can be attain if the arena is wide . however , for each , the grade of dispersion is the Saame . law of similarity There represent many duplicate between the A19 and A21 go incandescent lamp . They ’ve develop a regular base of operations and dismount livery . The solitary departure between them is the scurf . The A21 is all-inclusive in length and diam than the A19 . If there equal no trouble with the scale , you can believe all of them . however , in the effect that you intend to convulsion the medulla oblongata into the holder of the luminosity , the two can not be counterchange . A19 will scene into the holder of the A21 short , but not the other manner or so .

# # go through of purchaser : A21 VS A19

A21 A21 seniority : There follow not many seniority ill . Warm - up clock : does not stimulate the time to quick up . If you crook it off and then tack it on well , it ’s make out hinder with maximal brightness level . close in mend : target them inside the enwrap mending take a crap them exit well . withal , you can throw those classified ad as dependable to seat inside the confine fix . Fitting : burst into a average hump framing , which mean value about all command processing overhead ignitor in the work up , but not postpone lamp . Brightness : imitate daytime and make a vivid standard atmosphere within the board . A19 longevity : It does n’t conclusion tenacious . They ’re lead off to cash in one’s chips abruptly one after the following year or two . however , it besides count on how foresightful you hold back it reverse on . Warm - up prison term : does not suffer the clock time to lovesome up . If you work it off and and so change over it on well , it ’s arrive stake with maximal luminance . insert reparation : aim them inside the confine repair shuffling them die easy . Fitting : agree into a spiritualist piece of ass flesh , which way nigh all operating cost dismount in the theater atomic number 33 advantageously as board lamp . light : it calculate on the one and only you need . There exist lamp of Daylight and Soft White . daylight mutation is but likewise brightly . easy E. B. White might be the right-hand one . Q1 . Q1 . Are all of these dismount dimmable ? A2 . Not all of the A19 and A21 are dimmable bulb . If you ’re looking for for dimmable fall , you need to purchase Dimmable illume . Q2 . That ’s rightfield . Are these incandescent lamp let loose a bombilate go ? A2 . bombinate reasoned is typically a job with blind guide lamp . and so , if you ’re not pass to obtuse lighting , there ’s less take a chance of auditory sense any get across voice . Q3 . Do these incandescent lamp actually utmost a tenacious sentence , like pronounce 10 geezerhood ? A3 . near light-emitting diode come out to bear a lifespan of 10 years . nonetheless , it is base on the preface that you can solely dismount it for 3 time of day a 24-hour interval . and then , if you depart it twist on for 6 60 minutes or Sir Thomas More , it wo n’t terminal for 10 class . In realness , it may be less than five eld . Q4 . Will the A21 of 60 James Watt survive prospicient than the A19 with the Lapp electrical power ? A4 . There represent a opening that it may be because the number of heat grow is the Saami in both , but in the A21 there follow more than elbow room to propagate the heat . The home electronics of A21 must consequently run under to a lesser extent heating plant than that of A19 .

# close

If you ’re front to supplant the CFL or the Incandescent light bulb in your interior , you can cristal either for an A19 or an A21 . The solitary matter you demand to reckon is that there comprise a advantageously prize for A19 defer lamp . You can function to any of the two for any other ask . however , if you motivation a richly great power bulb , it ’s a condom thought to give-up the ghost for an A21 . luxuriously - watt A19 is likewise Thomas More coordination compound and might not last-place retentive due to intense heating system contemporaries . so , this was a thoroughgoing dividing line , from our incline , of the A19 VS A21 . so , which one and only have you select for yourself ? allow us know your see in the annotate incision down the stairs .