e26 vs t8 led

[tinysparky]

Question - Why not use screw in led bulbs and fixtures instead of t8 style led fixtures?

Costco has the LED t8 style for $30.

Costco also has screw in 100 watt bulbs for $2 and home depot has the fixtures for 1.50.

Seems like I can put in 8.5 lights for every one of the t-8 style dual led stip ones.

Lighting a 40x72 w/13' eve height.


BTW - you guys (and gals) are awesome!

 

[American Locomotive]

The screw in bulbs throw light everywhere and run much hotter. You'll be wasting a lot of light lighting up things you don't really care about - like your ceiling. A bunch of those bulbs may also result in really uneven lighting as well.

Bulbs like the T8 retrofits spread the light over a wider area, helping to eliminate shadows and reduce "hot spots". Additionally, they fire downwards, meaning a lot more light gets where you need it.

 

[tinysparky]

I agree a standard bulb has about a 220 degree light spread which means my rafters are getting a little too much light.

My understanding is that a T-8 style LED Uses around 17 Watts and is about 1700 Lumens

A 110 degree downward flood bulb is about 1520 Lumens at 14.5 watts.

So a single double LED t-8 setup is 3400 lumens while I could get 13,000 lumens for the same price using flood led's... with that many lights, it seems like the shadows wouldn't be much of an issue.

 

[ard]

I had existing dual tube T12 fixtures, nice reflectors, end caps, integrated diffusers.

For $19.40 each fixture (9.70 per bulb) I put in two LED tubes, 2200Lumens each. Constructed to radiate light 'downwards' (not the cylindrical radiation of a fluorescent tube) Bascially twice the light.

I am sure you can come up with a set of bulbs that mount into cheap porcelain fixtures to give you more lumen on paper. Maybe far cheaper.

Lumen, price, power usage-are only part of the process. You want it to look good too- both how the fixtures look and the light they project.

 

[American Locomotive]

As mentioned, you can definitely do A LOT better than $30/tube for the LED T8 retrofit bulbs.

I would also seriously question the longevity of any $2 "100 Watt" Equivalent bulb.