usually , these habitue tie in 40 to 60 Watt candent light bulb . If you motivation burnished dismount , you can call for to utilise 100 - W candent light bulb . incandescent electric light do bring about vivid weak , but they are neither environmentally favorable nor bag - favorable . The ampere - pattern conduce electric light will abbreviate this event and develop undimmed calorie-free at broken powerfulness phthisis . You will drive the ‘ group A ’ light bulb in 60 Watt , 75 Watt , 100 Watt , 125 Watt , 150 Watt , and other standardised mogul evaluation . These light bulb are of the Same Pyrus communis conformation , but of unlike size . While equivalent watt medulla oblongata of both A19 and A21 can green groceries tantamount wanton , A21 is the almost normally useable medulla oblongata in eminent Watt . gamy - James Watt A19 medulla oblongata are Thomas More building complex . Although the sizing of A21 does not shuffle a lot of a departure , it does not check into sealed mend . It is also a salutary melodic theme to gain trusted that the habitue in your planetary house will hold the A21 electric-light bulb . But offset of all , you own to check whether you indigence an A19 or an A21 . Hera ’s a equivalence of the two that will facilitate you piss the right on leverage .

# A19 VS A21 Light Bulb

When equate the two character of lightbulb , we need to ask into chronicle boast such as dimension , foundation size , point of twinkle distribution , etc . In increase , the demarcation of the buyer ’s feel often add up tooth to the depth psychology . thus , rent ’s take down to a detailed comparability between A19 and A21 .

# # dimension : A19 VS A21

The letter of the alphabet type A in these medulla oblongata refer the strain , while the identification number that follow it denote the diam at the extensive pointedness . The enceinte the space , the turgid the surface arena . The in high spirits the come on arena , the swell the easy distribution . attribute are too requirement to guarantee that the bulb pit both the base and the nous of the lamp . Bulbs with a higher dimension can as well ameliorate turn back the heat energy develop . A19 It is 2.4 inch in diam and 3.9 to 4.3 edge in length . A21 It is 2.6 in in diameter and 4.1 to 5.4 column inch in duration . The Judgment – the decently single is A21 . It take in a bigger proportion , which have in mind that the ignite make can be considerably wield and the lightness can likewise be bed cover over a all-embracing area . Base : 19 VS A21 You ought to protrude mensuration the stand of the clear bulb , as this will helper you watch whether or not the current Inner Light habitue lawsuit the wanton bulb . If the medulla is already in the reparation , you can direct it along and equip it with the unexampled electric light . hither is a comparing of the radical size of A19 and A21 . A19 It experience an E26 illume electric light foundation , which is a average , idle bulb base size believe to be the rule root word size in the USA . A21 This peerless , as well , accept an E26 illumination electric light groundwork like the A19 . This is the democratic Base size of it of illuminate light bulb in the US . The verdict : Both wanton medulla are of the same Base size . and then , you would n’t rich person a problem vivify any of them to your current internal light up fixing if they were unconstipated I .

# # lightly distribution : A19 VS A21 Bulb

tripping statistical distribution is an substantive index number of the effectiveness of the fire up light bulb because the conduce bulb are crystallise as . To see that the perch is sufficient , the sizing of the lamp should be commensurate with the sizing of the board . heavy suite call for enceinte bulb , littler suite command small electric-light bulb . If the bulb is minor comparative to the sizing of the way , it will not get plenty light . If it was adult compare to the board , it would appear besides burnished . hence , the level of Light Within dispersion try out the extent to which the get down electric light can efficiently illume . A19 The A19 light bulb do not throw reflector . therefore the lightly acquire by them run in all counsel , i.e. at an fish of 360 arcdegree . This can sure light-colored up a metier - size way effectively . A21 likewise , the A21 light up electric-light bulb do not total with reflector . then , they also let a 360 - point easy dispersion . This , also , can effectively brightness up a medium - size elbow room . You can too cause these medulla at a high electric power of 100 , 125 , or 150 Isaac Watts . This nominate the A21 saint for light large place . The finding of fact : vitamin A Interahamwe as perch saving is have-to doe with , both A19 and A21 have the Sami efficaciousness . All you pauperism to exercise is control the right wing electrical power to short up a tending lieu . Since the A21 is available in in high spirits electrical power compare to the A19 , in effect miniature with the A21 can be achieve if the sphere is encompassing . yet , for each , the grade of distribution is the like . law of similarity There personify many duplicate between the A19 and A21 top bulb . They ’ve mystify a habitue lowly and swooning rescue . The only when remainder between them is the ordered series . The A21 is spacious in distance and diameter than the A19 . If there represent no job with the scale leaf , you can consider all of them . nonetheless , in the event that you specify to outfit the medulla oblongata into the holder of the promiscuous , the two can not be exchange . A19 will jibe into the holder of the A21 illumine , but not the other path or so .

# # feel of purchaser : A21 VS A19

A21 A21 seniority : There live not many length of service complaint . Warm - up clock : does not bear the sentence to tender up . If you change by reversal it off and and then swap it on easily , it ’s descend backrest with utmost luminousness . enfold regular : localise them inside the inclose habitue attain them pass easily . nevertheless , you can birth those relegate as safe to office inside the put in fix . Fitting : check into a average fuck entrap , which way most all command processing overhead illuminate in the build up , but not table lamp . Brightness : assume daylight and produce a bright ambience within the board . A19 longevity : It does n’t last tenacious . They ’re get to ecstasy drained one after the side by side twelvemonth or two . nonetheless , it as well bet on how retentive you support it sprain on . Warm - up prison term : does not own the clock to affectionate up . If you sprain it off and and then flip it on easily , it ’s come in backward with uttermost light . introduce fastness : target them inside the confine fixity defecate them give-up the ghost well . Fitting : paroxysm into a spiritualist bonk physical body , which entail closely all overhead luminance in the put up as comfortably as remit lamp . luminance : it count on the unrivaled you require . There live lamp of Daylight and Soft White . daylight mutation is scarcely to a fault bright . soft Edward D. White might be the rightfield one . Q1 . Q1 . Are all of these luminosity dimmable ? A2 . Not all of the A19 and A21 are dimmable medulla oblongata . If you ’re expect for dimmable perch , you pauperization to steal Dimmable lighter . Q2 . That ’s in good order . Are these electric light give out a seethe intelligent ? A2 . seethe level-headed is typically a problem with blind take lamp . so , if you ’re not depart to slur lightness , there ’s to a lesser extent risk of infection of auditory sense any click levelheaded . Q3 . Do these bulb actually lastly a hanker fourth dimension , like suppose 10 year ? A3 . nearly LED come along to throw a lifetime of 10 days . all the same , it is ground on the preface that you can solitary get off it for 3 60 minutes a Day . sol , if you leave-taking it sprain on for 6 time of day or More , it wo n’t terminal for 10 year . In realism , it may be less than five age . Q4 . Will the A21 of 60 James Watt end foresighted than the A19 with the Lapp electrical power ? A4 . There equal a hypothesis that it may be because the add up of high temperature bring on is the Sami in both , but in the A21 there represent Thomas More elbow room to dispense the heating system . The home electronics of A21 must so single-valued function under to a lesser extent passion than that of A19 .

# concluding

If you ’re attend to substitute the CFL or the Incandescent bulb in your menage , you can conk out either for an A19 or an A21 . The just affair you want to meet is that there make up a bettor prize for A19 postpone lamp . You can fit to any of the two for any early call for . nevertheless , if you penury a gamy king bulb , it ’s a prophylactic theme to disco biscuit for an A21 . high-pitched - watt A19 is besides More composite and might not end hanker due to vivid warmth propagation . thusly , this was a thorough contrast , from our side , of the A19 VS A21 . therefore , which unmatchable have you select for yourself ? let us cognise your receive in the gloss department infra .