LED / Metal Halid Replacement

[dw1]

Has anyone used these yet?? It is an LED 100 watt lamp that replaces a 400w MH lamp, bypass or take out the ballast and wire to line voltage (120v) in my case
http://www.topbulb.com/venture-lp28...m_term=1101013117775&utm_content=All Products

I can get these for $140 ish each
I have some 400w MH to repair and by the time you buy a ballast and lamp, I was wondering if these would work??
(The young man at the supply house was recommending these)

 

[American Locomotive]

I suspect it will run very hot (especially in an enclosed fixture) and have a short miserable life. Plus, HID reflectors are designed for a shot, narrow light source, while this thing is not that. It may result in poor light distribution.

It says 400w equivalent, but I don't buy it. It has half the lumen output, and is being installed in the same lossy reflector fixture.

 

[kelving884]

I have several of of them. I use them for lighting in my hobby machine shop, (older eyes need brighter lights). I think they are very extensive and very good leds. While I haven't measured the lumens they are VERY bright. My only compliant is the internal cooling fan is noisy. I've run mine for over a year now without problems.

Sent from my SM-P900 using Tapatalk

 

[ForceFed70]

I'm skeptical about their claims.

110 lumens/watt is high for PAR replacement type LED. Most are around 90.
Metal Halide lamps are typically around 85 lumens/watt. Even at 110lumens/watt there's no way this lamp is going to put out the same amount of light as a 400W Metal Halide.

When they start making outlandish claims warning bells go off for me.

You can buy a pretty nice LED fixture for $140.

 

[cybrdyke]

Has anyone used these yet?? It is an LED 100 watt lamp that replaces a 400w MH lamp, bypass or take out the ballast and wire to line voltage (120v) in my case
http://www.topbulb.com/venture-lp28...m_term=1101013117775&utm_content=All Products

I can get these for $140 ish each
I have some 400w MH to repair and by the time you buy a ballast and lamp, I was wondering if these would work??
(The young man at the supply house was recommending these)

These are called corn cob lamps because of the way the LED's are stacked vertically. They have a shakey reputation for a few different reasons, but they have improved a little over the last year or so. If I were going to buy one, I'd make sure it was from a reputable company. Venture is a known brand in the lighting industry, and although I'm sure they dont actually manufacture this lamp, at least they'll stand behind it.

Will it work for you? It depends on what kind of fixture you have. If you have a traditional high-bay with an aluminum domed reflector, then this is probably not a good choice. It doesn't produce enough lumens and they are going in the wrong direction for this to be a good choice. If you have an acrylic domed reflector, then this lamp would work.

110 LPW is typical of this type of lamp. The claim that it's equivalent to a 400w Metal Halide can be a little deceptive. In some cases, like in a pole top fixture, or that acrylic domed high bay, it will produce the same results. In other types of fixtures, it will fall short.
$140 is a proper price, although they can be found cheaper by less known companies. For that money, you might be better off finding a new fixture.
Good luck,
CD

 

[tre873]

500W Equivalent Daylight LED High Lumen Utility Light Bulb

http://www.homedepot.com/p/300059562

You can buy them at Home Depot for about half the price you were quoted. I wanted to try one in my security light on my shop but haven't done it yet.

 

[dw1]

These are called corn cob lamps because of the way the LED's are stacked vertically. They have a shakey reputation for a few different reasons, but they have improved a little over the last year or so. If I were going to buy one, I'd make sure it was from a reputable company. Venture is a known brand in the lighting industry, and although I'm sure they dont actually manufacture this lamp, at least they'll stand behind it.

Will it work for you? It depends on what kind of fixture you have. If you have a traditional high-bay with an aluminum domed reflector, then this is probably not a good choice. It doesn't produce enough lumens and they are going in the wrong direction for this to be a good choice. If you have an acrylic domed reflector, then this lamp would work.

110 LPW is typical of this type of lamp. The claim that it's equivalent to a 400w Metal Halide can be a little deceptive. In some cases, like in a pole top fixture, or that acrylic domed high bay, it will produce the same results. In other types of fixtures, it will fall short.
$140 is a proper price, although they can be found cheaper by less known companies. For that money, you might be better off finding a new fixture.
Good luck,
CD

I was wondering if it was to good to be true. The young man at the supply house was "Highly Recommending" them, all they had on the floor, was sold.
I was looking for a somewhat easier option for these lights. A cheerleading outfit rents a office/wharehouse- 3000 sq ft. it has 8-400 watt metal halides in the practice area, bad part is, it has about a 10" spring floor that would have to be taken up to replace the fixtures, for now, I ended up cleaning the fixtures and replacing all the lamps and 1 cap, definitely made a big difference. Owner was looking to replace them down the road, this will buy them some time.
I also wanted to see if they would work outside in a 400 w wall pack fixture!!??
I have not seen these at HD

 

[cybrdyke]

I also wanted to see if they would work outside in a 400 w wall pack fixture!!??

They're not great in wall packs either, since half the light emitted goes backwards into the fixture. Good wall packs have a reflector back there, but the light just gets bounced forward into the lamp, which blocks it from getting out of the fixture. Glass lamps, like a 400w MH, allow some of that reflected light to go thru them.
There are similar products that are made specifically for wall packs. They screw into the socket, but all the LED's are on one side.
CD

 

[Bert_]

My experience with these screw in replacements has been if you make your decision based on the advertised "replaces *** watt" you will be very disappointed.

In 95% of fixtures these LED replacements produce noticeably less light than what they claim to replace