But I wasn\u2019t alone. American homeowners across the country waste billions of dollars every year on inefficient incandescent and CFL light bulbs. <\/p>\n\n\n\n
And all that wasted energy leads to a lot of unnecessary pollution. Residential lighting emits 53 million tons of CO2 into the atmosphere each year. If we all switched to LEDs tomorrow we could cut that number by more than half. <\/p>\n\n\n\n
In this article I\u2019ll share everything I learned during my research into LED lighting and show you how to make the switch.<\/p>\n\n\n\n
LEDs vs. CFLs vs. incandescent bulbs<\/h3>\n\n\n\n
There are three common types of light bulbs:<\/p>\n\n\n\n
- Traditional incandescent<\/li>
- CFL (compact fluorescent lights)<\/li>
- LED (light emitting diodes)<\/li><\/ul>\n\n\n\n
![\"\"](\"https:\/\/carbonswitch-cms.site\/wp-content\/uploads\/2021\/06\/led-comparison-1024x536.png\")
<\/figure>\n\n\n\nIn a traditional incandescent light bulb<\/strong>\u2014the ones you\u2019re probably looking to replace\u2014light is created by heating a tungsten filament in the bulb. The filament is heated to the point where it starts to glow but does not meet its melting point (tungsten is used because it has the highest melting point of any metal). Although this process creates light, around 90% of the energy<\/a> used is given off as heat and not light. Not great.<\/p>\n\n\n\n
Halogen bulbs, and other \u201cmodern\u201d versions of the incandescent bulb, operate using the same principle, often with modifications (such as filling the bulb with halogen gas) in order to increase operating life. But they still waste 90% of the energy on heat.<\/p>\n\n\n\n
Compact fluorescent lights (CFLs)<\/strong> are easily recognizable because of their tubes of gas, which are often shaped in a swirl in order to maximize the light emitted by the vapor inside. They work by flowing electricity through argon and mercury vapor in a tube, creating ultraviolet light, which then interacts with a coating on the tube to create light. This process means that very little heat is created\u2014but the process is also more energy intensive than a LED for the amount of light created, and it creates potentially dangerous ultraviolet light as a byproduct. Additionally, there\u2019s the possibility of mercury being released into the local environment if the bulb is ever broken.<\/p>\n\n\n\n
A decade ago, this was the light bulb you got to replace the traditional incandescent. It\u2019s much more efficient than the incandescent, and because it\u2019s been in development since the 1970s, it was in a position to scale up production in order to bring costs down enough to compete with incandescents. But the CFL technology has not been able to keep up with the advances in LEDs. CFLs generally fall between incandescents and LEDs in terms of price and energy use.<\/p>\n\n\n\n
Light emitting diodes (LEDs)<\/strong> create light using circuits. Electricity flows into the bulb, where some interesting physics<\/a> and semiconductor design work together to create light. Very little heat is produced during this process (as much as just having your phone or computer screen on), with up to 80% of the energy used resulting in visible light.<\/p>\n\n\n\n
Because of this design, LEDs also last much longer. They have no moving parts, no parts undergoing thermal stress, and no gases and coatings which could wear off. This gives the LED bulb fewer points of failure, and allows it to continue operating long after other forms of lighting would have broken.<\/p>\n\n\n\n
Converting lumens to watts: what to know when buying a light bulb<\/h3>\n\n\n\n
If you\u2019re switching from incandescent to LED bulbs, you\u2019re likely going to notice that the measurements don\u2019t line up. For example: your incandescent bulb probably has a big 60W at the top, and the LEDs you\u2019re looking at are advertising in lumens.<\/p>\n\n\n\n
Lumens and watts measure different things.<\/p>\n\n\n\n
- Watts (W)<\/strong> measure energy use<\/li>
- Lumens (lm)<\/strong> measure brightness<\/li><\/ul>\n\n\n\n
In the past, because there was only one type of light bulb, the incandescent, energy use in watts was directly related to how bright the light was. A 100W bulb was brighter than a 60W bulb, a 150W brighter than a 100W, and so on. With the rise of new lighting technologies, this relationship broke down.<\/p>\n\n\n\n
Now you need to look at the brightness of the LED bulb\u2014not the wattage\u2014to compare it to your existing lights<\/strong>. Brightness is measured in lumens (lm), which is found by measuring how much light something creates in a given amount of time. Now, lumens is what you need to look for when looking at light bulbs.<\/p>\n\n\n\n
Light bulbs with identical lumen values are identical in brightness<\/strong>\u2014this is important. Whether it\u2019s a 60W incandescent, 14W LED, or a 10W LED, if they have the same lumens value, they have the same brightness. The differences in wattage just mean they differ in cost to use, with the higher wattage costing you more for the same amount of light.<\/p>\n\n\n\n
What does \u201c60 watt equivalent LED\u201d mean?<\/h3>\n\n\n\n
A lot of LED bulbs are marketed as \u201c60 watt equivalent,\u201d but if it\u2019s not actually 60W, what does that mean? In simple terms, it means that this bulb can be a 1 to 1 replacement for what was the most common type of light bulb: the 60W incandescent bulb. But there are some details worth going over here.<\/p>\n\n\n\n
A couple decades ago, a bunch of lighting and electricity nerds at federal agencies with acronyms like NREL, DOE, and EPA decided that the average 60W incandescent bulb is equivalent to 800lm. In practice, you can expect a 10% difference from the average, meaning 60W incandescent bulbs could have a brightness of anywhere from from 720lm to 880lm.<\/p>\n\n\n\n
Because this value is an average and not a standard, manufacturers are free to market with it and use it however they want. Meaning a LED bulb with 750lm, while below the average for a 60W incandescent, has a brightness within the reasonable expected value for an individual 60W bulb and might call itself a \u201c60w equivalent.\u201d<\/p>\n\n\n\n
In general, you can use 800lm as the brightness of the 60W incandescent bulb you need to replace. But if you see a bulb slightly over or under 800lm, don\u2019t treat them the same. If a bulb has fewer lumens than the alternatives also marketed using \u201c60W equivalent,\u201d be sure to take that into account when looking at the price.<\/p>\n\n\n\n
Here\u2019s a watts vs. lumens chart courtesy of the Light Bulb Company that might be helpful in switching bulbs.<\/p>\n\n\n\n
![\"\"](\"https:\/\/carbonswitch-cms.site\/wp-content\/uploads\/2021\/06\/led-to-lumens-charts-1024x543.png\")
<\/figure>\n\n\n\nHow much do LED lights save per year?<\/h3>\n\n\n\n
The average home with incandescent bulbs uses about 2,000 kWh of electricity per year. And that results in almost one ton of carbon being released into the atmosphere\u2014just for lighting. For reference, that\u2019s the same amount of emissions as a flight from NY to Europe.<\/p>\n\n\n\n
At the national average of $0.10 per kWh<\/a>, that means these homeowners spend about $215 per year on lighting. By switching to LEDs, the average homeowner can bring that number down to $50\u2013$115 and cut roughly 600 pounds of carbon per year, depending on where they live.<\/p>\n\n\n\n
Of course the actual amount of electricity your home uses on lighting will depend on a number of factors including: <\/p>\n\n\n\n
- How many light bulbs your home has<\/li>
- How much you use your lights<\/li>
- What kind of bulbs you currently have<\/li><\/ul>\n\n\n\n
We won\u2019t get super deep into the math here, but if you\u2019re interested in getting into the nitty gritty, take a look at our\u00a0LED savings<\/a>\u00a0guide to figure out precisely how much you can save.<\/p>\n\n\n\n
How many lumens do I need?<\/h3>\n\n\n\n
When you\u2019re buying new bulbs you\u2019ll probably see a label like the one below with things like lumens, yearly energy cost, lifespan, and light appearance (or color). <\/p>\n\n\n\n
Let\u2019s go over what all this means. <\/p>\n\n\n\n
![\"\"](\"https:\/\/carbonswitch-cms.site\/wp-content\/uploads\/2021\/06\/lighting_facts_bulb_lab.png\")
<\/figure>\n\n\n\nLED Lumens<\/h4>\n\n\n\n
The brightness of the bulb you need depends on personal preference and where you intend to place the bulb. Lumens per square foot (lm\/sqft) is a measure of how much light you need in an area. <\/p>\n\n\n\n
Generally, the more detailed work you expect to do in an area, the brighter you want the space to be and the higher lumen per square foot value you want. Makes sense.<\/p>\n\n\n\n
Remember: lumens are the only way you can compare the brightness of bulbs, and they mean the same thing no matter what the other statistics of the bulb are.<\/p>\n\n\n\n
LED energy cost per year<\/h4>\n\n\n\n
LEDs save money<\/a> and energy. The label will show you the estimated energy cost per year per bulb, which means you don\u2019t need to do any math. Add up this value for all the bulbs you buy, and you\u2019ll get a great estimate on your total yearly costs.<\/p>\n\n\n\n
But keep in mind this is just an average based on 3 hours of use and $.11 per kWh electricity costs. If you keep your lights on all day or if you live in a place like Massachusetts where electricity is twice the national average<\/a>, you should expect to pay more.<\/p>\n\n\n\n
LED lifespan<\/h4>\n\n\n\n
On every LED bulb label, you\u2019ll see a box for \u201cLife,\u201d which gives you either the total hour lifespan or the total year lifespan (given a specific amount of daily use). The expected LED lifespan should be about 25,000 hours, so if it\u2019s drastically lower, you might want to try something else.<\/p>\n\n\n\n
Note: if it gives you the lifespan in days, just multiply that number by 365 and then by the number of daily use hours it gives. (In the label above, 18.3 year * 365 days * 3 hrs\/day = 20,038.5 hours.)<\/p>\n\n\n\n
LED light appearance<\/h4>\n\n\n\n
Light appearance \u2014 also called correlated color temperature (CCT) or just temperature \u2014 is the \u201ccolor\u201d the light is, meaning what sort of light the bulb gives off. This is measured in kelvins (K). And it\u2019s one of the most noticeable differences between light bulbs (if you\u2019ve ever bought a really cold, blue light bulb for your bedroom you know what we mean).<\/p>\n\n\n\n
The cooler the light, the closer to daylight the human brain thinks it is. This makes higher temperature lights perfect for areas where you need to be alert and be able to perceive contrasts, like a kitchen. But these kinds of lights would make it harder to fall asleep if used for reading in bed. Generally, you should use warmer colors (below 3500K) for 70% of your lighting<\/a>, saving the whiter or bluer lights for areas where more detailed work is done. (Or if you\u2019re like the author of this guide, you\u2019ll just want to stick with warm lights for your entire home!)<\/p>\n\n\n\n
To find out which color bulb you need for each room, take a look at our guide to\u00a0LED colors and temperatures<\/a>.<\/p>\n\n\n\n
LED energy use in watts<\/h4>\n\n\n\n
The final box gives energy use in watts. The lower the watts, the cheaper the bulb is to use. Again, consider that the typical incandescent bulb uses 60W, the typical CFL uses 16W and the typical LED uses 10W.<\/p>\n\n\n\n
Other things to consider before buying LED bulbs<\/h3>\n\n\n\n
It will cost between $1 and $5 a bulb to replace your existing bulb with a LED.<\/p>\n\n\n\n
Why the big range? All the stats above will factor in, but it\u2019s also dependent on the quantity purchased, the type of bulb purchased, and where you purchase the bulb.<\/p>\n\n\n\n
Quantity of bulbs<\/h4>\n\n\n\n
Bulk purchases of any type of bulb will naturally make it cheaper to switch over. But always make sure to check the label.<\/p>\n\n\n\n
For example, this deal<\/a> of 24 bulbs for $24 seems great, with a price per bulb of $1, but the bulbs have a far lower lifespan than you\u2019d expect from LED bulbs (15,000 hours vs. the expected 25,000 hours). They\u2019re also less bright than alternatives also marketed as \u201c60 watt equivalent\u201d (750lm vs. the expected 800lm). While this is still a better light than an incandescent or CFL alternative, it might not be the best deal in the end.<\/p>\n\n\n\n
Energy compliance<\/h4>\n\n\n\n
Always check to see if the bulk order of bulbs is Energy Star compliant and can be sold in California. Energy Star is a mark of quality that ensures that the bulb you\u2019re getting follows a set of strict quality and lifespan guidelines. The California Energy Commission sets the strictest efficiency requirements<\/a> in the country, and if an LED bulb is unable to be sold in California, it may be less efficient or otherwise inferior to other alternatives.<\/p>\n\n\n\n
Type of bulb<\/h4>\n\n\n\n
How complicated you want your bulb to be is up to you. You can get a simple LED bulb, one capable of being used in a dimmer switch, or even a \u201csmart bulb,\u201d which can emit different colors of light and be controlled by your phone or other smart devices.<\/p>\n\n\n\n
The more complicated the bulb, the more expensive it will be, but this gives you the ability to customize your home\u2019s lighting. Generally, you can expect a standard bulb to run between $1 and $5, a dimmer bulb between $2 and $7, and a smart bulb between $10 and $40.<\/p>\n\n\n\n
Can I get an LED light bulb rebate?<\/h3>\n\n\n\n
Local utility and state programs can help you lower the cost of switching to LEDs even more. Your local power utility has as much of an incentive to cut your home electricity use as you do. Yes, it means they\u2019re able to sell you less electricity, but to the provider, it\u2019s worth more today to avoid the potential costs of producing more electricity. Energy efficiency allows the utility to continue to run the power grid with the existing power plants and lines even with population growth, and not have to make costly investments in new power plants or power lines that may not pay for themselves for decades.<\/p>\n\n\n\n
In part because of this, all utilities run some sort of residential energy efficiency program to help offset some of the costs of retrofitting or upgrading your home.<\/p>\n\n\n\n
Many of these programs<\/a> come in the form of rebates, where you send the utility a proof of your purchase and they send you a check for some portion of the cost. You can use this link<\/a> to see if your local utility is running a rebate program for LEDs.<\/p>\n\n\n\n
Because of the success of the programs, many of them have been successfully completed, terminated, or no longer include LEDs. If your local utility doesn\u2019t have a rebate program, it most likely has what is called \u201cupstream incentives.\u201d Your local utility will work with (and often just give money to) manufacturers and local retailers in order to guarantee lower prices at the store. This often results in the same price savings as a rebate, but with less paperwork for you.<\/p>\n\n\n\n
Which LED bulbs should I buy?<\/h3>\n\n\n\n
Using all these factors, we did research for our own home and office to find what might be the best bulbs. Our local utility no longer had any efficiency programs aimed at LEDs, so we looked online for the best deal.<\/p>\n\n\n\n
We found this bulk order<\/a> of 6 bulbs for $15.99, or $2.67 per bulb. It\u2019s a perfect replacement for most of the average home\u2019s lights, with the statistics we expect from a modern LED bulb. They are 800lm, as bright as most of the incandescents or CFLs we already have. They\u2019re capable of being used in dimmer switches, so we don\u2019t have to go out and purchase a second set of bulbs for those rooms. And they have a lifespan of 25,000 hours, so we won\u2019t have to think about replacing the bulb for decades.<\/p>\n\n\n\n
Of course, you might have different requirements: maybe you don\u2019t have any rooms with dimmer switches (and don\u2019t plan to). Or maybe you\u2019re looking for bulbs just for your bedroom and want them to be dimmer because you use them right before bed. Keep in mind your personal preferences when making that decision.<\/p>\n\n\n\n
Read more about LEDs and home energy efficiency improvement projects<\/h3>\n\n\n\n
- LED savings guide<\/a><\/li>
- LED temperature and color guide<\/a><\/li>
- How to save money and energy with a heat pump<\/a><\/li>
- Everything you need to know before switching to a heat pump<\/a><\/li>
- Heat pump water heater buyer’s guide<\/a><\/li><\/ul>\n","protected":false},"excerpt":{"rendered":"
LEDs can save you thousands of dollars When you think about saving energy in your home you probably don\u2019t think much about your light bulbs. How could a single bulb save much money? That\u2019s what I thought before I began this research. I knew I could save some energy by switching to LEDs, but I […]<\/p>\n","protected":false},"author":2,"featured_media":711,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"content-type":"","site-sidebar-layout":"default","site-content-layout":"default","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[224,399],"tags":[],"class_list":["post-702","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-guides","category-lighting"],"yoast_head":"\n
LED Lighting Buyer's Guide \u2014 How to Switch to LED Lights<\/title>\n<meta name=\"description\" content=\"We spent hundreds of hours researching the best LED lighting. Read the guide to find the best LEDs for your home.\" \/>\n<meta name=\"robots\" content=\"noindex, follow\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"LED Lighting Buyer's Guide \u2014 How to Switch to LED Lights\" \/>\n<meta property=\"og:description\" content=\"We spent hundreds of hours researching the best LED lighting. Read the guide to find the best LEDs for your home.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/carbonswitch-cms.site\/led-lighting-buyers-guide\" \/>\n<meta property=\"og:site_name\" content=\"Carbon Switch\" \/>\n<meta property=\"article:published_time\" content=\"2021-06-11T15:32:27+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2022-03-08T23:56:09+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/carbonswitch-cms.site\/wp-content\/uploads\/2021\/06\/led-buyers-guide-featured.png\" \/>\n\t<meta property=\"og:image:width\" content=\"800\" \/>\n\t<meta property=\"og:image:height\" content=\"600\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"author\" content=\"Michael Thomas\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@curious_founder\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Michael Thomas\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"13 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/carbonswitch-cms.site\/led-lighting-buyers-guide#article\",\"isPartOf\":{\"@id\":\"https:\/\/carbonswitch-cms.site\/led-lighting-buyers-guide\"},\"author\":{\"name\":\"Michael Thomas\",\"@id\":\"https:\/\/carbonswitch-cms.site\/#\/schema\/person\/e5140f40fb03727d1699204ac15e1a3e\"},\"headline\":\"LED Lighting Buyer\u2019s Guide\",\"datePublished\":\"2021-06-11T15:32:27+00:00\",\"dateModified\":\"2022-03-08T23:56:09+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/carbonswitch-cms.site\/led-lighting-buyers-guide\"},\"wordCount\":2828,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\/\/carbonswitch-cms.site\/#organization\"},\"image\":{\"@id\":\"https:\/\/carbonswitch-cms.site\/led-lighting-buyers-guide#primaryimage\"},\"thumbnailUrl\":\"https:\/\/carbonswitch-cms.site\/wp-content\/uploads\/2021\/06\/led-buyers-guide-featured.png\",\"articleSection\":[\"Guides\",\"Lighting\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/carbonswitch-cms.site\/led-lighting-buyers-guide#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/carbonswitch-cms.site\/led-lighting-buyers-guide\",\"url\":\"https:\/\/carbonswitch-cms.site\/led-lighting-buyers-guide\",\"name\":\"LED Lighting Buyer's Guide \u2014 How to Switch to LED Lights\",\"isPartOf\":{\"@id\":\"https:\/\/carbonswitch-cms.site\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/carbonswitch-cms.site\/led-lighting-buyers-guide#primaryimage\"},\"image\":{\"@id\":\"https:\/\/carbonswitch-cms.site\/led-lighting-buyers-guide#primaryimage\"},\"thumbnailUrl\":\"https:\/\/carbonswitch-cms.site\/wp-content\/uploads\/2021\/06\/led-buyers-guide-featured.png\",\"datePublished\":\"2021-06-11T15:32:27+00:00\",\"dateModified\":\"2022-03-08T23:56:09+00:00\",\"description\":\"We spent hundreds of hours researching the best LED lighting. 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- LED savings guide<\/a><\/li>
- Lumens (lm)<\/strong> measure brightness<\/li><\/ul>\n\n\n\n
- Watts (W)<\/strong> measure energy use<\/li>