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Home Pool Pool & Spa Lights American Products & Pentair Pool & Spa Lights Pentair Amerlite Pool Light for Inground Pools Stainless Steel Facering | 300W 120V 15' Cord | 78421100
NOTICE: The pool & spa industry continues to face industry-wide shortages on many products that most vendors expect to last late into mid-2022. We're allowing items to be purchased so that customers who choose to wait will have their order shipped when product is available. WE WILL EMAIL YOU RIGHT AWAY IF YOUR ITEM IS BACKORDERED. 

Pentair Amerlite Pool Light for Inground Pools Stainless Steel Facering | 300W 120V 15' Cord | 78421100

Pentair Amerlite Pool Light for Inground Pools Stainless Steel Facering | 300W 120V 15' Cord | 78421100
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  • Pentair Amerilite Kwik Change Color Lens Kit | Blue-Green-Red | 78900100
    Kwik Change Color Lens Kit | Blue-Green-Red

Amerlite®, the world standard of reliability for underwater lights, features a stainless steel shell, 8-3/8 in. prismatic tempered glass lens, and stainless steel face ring with uni-tension clamp. Amerlites are UL listed to install in full-sized Pentair Pool Products, American, PacFab and Purex niches.
Amerlite® incandescent lights have been the world standard of reliability for underwater pool and spa lighting for decades. In fact, tonight they will light more than 3 million pools around the world.
Standard features include:
  • 8 3/8" prismatic tempered glass lenses for optimum light diffusion.
  • Heat-sensing water cutoff for low water protection.
  • Stainless steel shell and face ring are durable and highly corrosion resistant.
  • Optional plastic snap-on face rings let you coordinate with your pool finish.
  • Easy to service, all Pentair lights allow bulb changes without lowering your water level.
  • UL listed when installed in Pentair niches.
  • One-year limited warranty. See warranty for details.
  • Optional snap-on lens covers in blue, red, green and amber to instantly create different moods for different occasions.

Brand: Pentair
Bulb Type
Color Or White
Cord Length
Q & A
Start typing your question and we'll check if it was already asked and answered. Learn More
Browse 13 questions Browse 13 questions and 24 answers
What is the total diameter of the light?
Michael B on Apr 27, 2016
BEST ANSWER: Out side diameter of light ring
Can the case be replaced keeping the existing cord?
David L on Nov 23, 2017
American Products company inground pool light on the glass 3915 120 v 300watts and I want to switch to LED ....which would be a comparable LED bulb ?
Stefan K on Jun 10, 2019
What is the diameter from edge to edge including the stainless ring?
Michael B on Apr 27, 2016
BEST ANSWER: 10 inches across. 7 3/4 deep from pinnacle of glass to back of shell.
Any 75 ft cord? My distance is 55 ft
A shopper on Jun 3, 2017
BEST ANSWER: I only needed 15ft, due to my wiring being run through conduit buried near my pool. I would purchase the light light with a long cord, and cut to needs for first time installation. Less chance of water intrusion. I grounded at house mounted switch, this way it is grounded along with the house, not at the buried junction box.
Why is it rated 120 volts, isn't it on a transformer that knocks the voltage down to 10 v. or so?? thx
Chris A on May 8, 2017
BEST ANSWER: Surprisingly many of the systems are standard 120v. In fact the bulb inside is often just an everyday screw in light bulb. It does have a grounding system. However my light was full of water and on and no fatal hazard!!rather than replacing the bulb and trying to reseal, I would just get a new sealed unit.
can an amerilite be replaced with a pentair fixture?
A shopper on Jul 10, 2017
BEST ANSWER: It's just a light fixture, if it fits in the basin of your pool, it's only held in with one screw, just do your measurements before you buy, and good luck
Can you use dimmer switch with these lights?
A shopper on Nov 15, 2016
BEST ANSWER: ok what I did was take the big bulb out---went and bought a "dimmable"L.E.D. light bulb -----it is rated at 10 watts----but produces a 200 watt effect without a big electric bill---plenty of light for the pool-since I have the on/off switch in the living room wall to light up the pool----I simply put a dimmer switch in the regular out lit where the "switch" used to be and ------presto a totally 100% dimmer light.-------you can do it to the out side switch also-----might have to re-design the box-or replace it with an in house G.F.I.switch-----dimmer.
hope this helped.
I replaced my 500 watt incandescent light in my Pentair Amerilite with a J&J Colorfast LXG and replaced with new gasket. No air bubbles after putting back in niche and leaving on for 10 minutes as instructed. First day, all worked perfect for all lighting options. However, on second day, I cannot get light to come on. The circuit breaker is not tripped. I have a new GFI outlet on the pool light j-box which I reset to ensure this is not the problem. I have turned light switch off and on for many different options all without having the light come on. What can I do to get light to come on?
John I on May 29, 2018
BEST ANSWER: Have you confirmed that there is power going to the fixture? If so, I'd suggest removing the fixture from the pool and testing the bulb in another socket that's known to work. I would also test the GFCI. Good luck!
Can I use a transformer to lower the voltage to 12v?
Dennis F on Jun 20, 2017
BEST ANSWER: I don't think so, It's a 120 volt light, a 12 volt transformer would only send 12 volts to the light which wouldn't be enough voltage for a 120v light.
whats the dimensions of the smaller one for spa light? i have an existing niche of 7 3/4 inch opening?
celcon electric on Nov 26, 2016
BEST ANSWER: The smaller spa size lights are 6" wide.
do i have to drain pool to replace this light?
A shopper on Nov 22, 2016
BEST ANSWER: No I did not. I tape the end to keep it from getting wet as much as possible. I tied a piece of string to the end of the broken one and pulled it out. Then I tied the string to the new one and pulled it back thru. If you go on YouTube there is a video.
Do you have the pentair light fixture in 400 watt 120 volts 30 ft?
Linda R on Nov 6, 2020
3.7 / 5.0
3 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Rated 5 out of 5
It's just a light
Good value for this light, put an LED light in right a away for color effect, easy install, local pool store wanted 400 dollars, and it's the same light, would recommend this one for any occasion, just remember when shopping for a pool light, it's just a light bulb in a case, not a Pink Floyd concert
July 6, 2017
over 4 years ago
Rated 1 out of 5
It does not fit into the pool light cave so it is useless for me
April 19, 2020
1 year ago
Rated 5 out of 5
all good all good all agood all good all good all good all good all agood all good all goodall good all good all agood all good all good
July 5, 2017
over 4 years ago
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Register your Pentair product online at www.pentair.com.

You've always been able to count on the quality and long service life of Pentair products. Pentair uses state of the art workmanship, materials and manufacturing processes to create the most innovative pool and spa equipment anywhere. And now Pentair products can deliver even more value and peace of mind, because Pentair offers extended warranty coverage on select products that are installed by a qualified installer*.
While the majority of Pentair products are covered by a sixty- (60) day warranty, a select number of products qualify for extended warranty coverage.
Select Bundled Products: applies to purchases and qualified installation of a minimum of a pump and filter, and one or more of the following: heaters, heat pumps, control systems, automatic cleaners, lighting, salt chlorine generators or UV sterilizer**
*Note: Qualified Installer - Defined as a licensed professional who charges a fee for his services, and possesses a business license, contractor's license and/or resale permit. Common examples of a "qualified installer" include: Swimming Pool, Home Repair or Landscape Professional; Plumber or Electrician; General Contractor; Heating and Air Conditioning Specialist.
**Note: Bundled products - must be purchased on the same invoice and installed at the same time. If any product within a bundle is ineligible for the bundled warranty coverage then all products within the same bundle will be disqualified from receiving the three (3) year extended warranty coverage for bundled products.
TradeGrade products must be purchased from a retail store (brick & mortar), pool builder or pool service company to receive a one-year, two-year or three-year warranty. If purchased online will only receive a sixty-day limited warranty. View the list of TradeGrade Products.
Ecommerce (EC) products: Products purchased from an Authorized Pentair Online Reseller (products beginning with EC-) receive a one (1) year (parts only) warranty from the date of purchase. The exceptions are: IntelliChlor cells and IntelliFlo SVRS pumps which receive a two (2) year warranty. EC products are not eligible for the bundled three (3) year extended warranty.
Visit www.pentair.com to submit your product warranty registration.
This information was updated on 11/19/2021. For the most current information and full warranty policy please visit www.pentair.com/warranty.

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