LED vs Incandescent Bulbs

Lighting has come a long way with technological developments moving the lighting industry forward.

Incandescent lights have been around longer, but many still confuse them with LED lights, especially if they are not familiar with lighting options.

Unfortunately, businesses and consumers could be making poor decisions based on this lack of knowledge, which could lead to a potential cost in energy and money. This article aims to shed more light on this subject. 

The choice of lighting should be purpose-driven, whether it is based on the theme, the cost, the energy spent, or the environmental sustainability implications.

We will start by illuminating this important subject and providing energy-efficient and budget-friendly options.

What are the differences between incandescent and LED lights?

Light emitted:

Incandescent bulbs emit a warm and yellowish light with limited hues, while LED light options are available in a wider range of colours, such as warm whites, cool whites, and vibrant shades along the colour spectrum. 

Technological differences:

Incandescent and LED lights differ mainly in terms of the technology used and their energy efficiency.

Incandescent lights are based on a wire filament that is heated to produce warm yellowish light, while LEDs rely on semiconductor diodes to emit light. 

Quality:

LED bulbs use semiconductor diodes that pass electric current through them to emit light.

Even though incandescent bulbs have been on the market longer, LED bulbs are better known for their quality. LED lights offer higher brightness, higher energy efficiency, longer lifespan, and more diverse colours.

Colour ranges:

In terms of differences, both LED and incandescent lights offer aesthetic ambient light. However, LED lights offer a wider colour range, while the incandescent light range is limited to a few hues. 

Costs:

In terms of cost, LEDs are more cost-effective, although their initial cost is higher, while incandescent lights are cheaper to acquire but more expensive in the long run when cost and lifespan are factored in.

Lifespan:

LED bulbs produce brighter lights using less energy compared to incandescent lights. LED bulbs also produce higher-quality light compared to incandescent bulbs. Their longer lifespan means less frequent need to change the bulbs regularly.

Flexibility:

While LED lights warm up instantly upon lighting, incandescent lights reach maximum brightness after some warm-up. LED bulbs have versatile design flexibility relative to incandescent light.

Potential hazards and accidents:

LED lights require lower operating energy, which reduces the risk of overheating considerably.

On the other hand, incandescent bulbs are considered riskier because they produce a higher amount of heat that could cause an accident if they come close to flammable objects. 

With less heat being emitted, LED lights reduce the risk of hazards and burns. The other advantage of LED lights is that they don’t contain hazardous materials like mercury, which was traditionally found in incandescent bulbs.

Adaptability:

Incandescent bulbs rely on high temperatures to emit light, which explains why they do not function well in areas with low temperatures.

One thing to remember is that incandescent bulbs take a while to warm before reaching maximum brightness, during which the filament in the bulbs heats up to produce light. 

In cold environments, incandescent bulbs struggle to heat up and therefore reach full brightness, which reduces their efficiency in producing light.

On the other hand, LED bulbs function well regardless of the temperature and can even produce quality light at freezing temperatures. LED bulbs are efficient and reach full brightness instantly upon being turned on, no matter how cold the temperature is outside.

Investment value:

The question when choosing between the two types of bulbs is whether you would rather make a higher initial investment and reap long-term benefits or go for the cheaper option and be ready to deal with short-term issues.

The benefits of investing in energy-efficient LED bulbs become evident when making a long-term comparison. 

LEDs not only help save energy and reduce costs, but also repay the initial investment many times over. LED efficiency is estimated at 80 to 90 percent with its technology that minimises heat generated and light emitted per unit of energy used. 

Cost efficiency (LED vs incandescent bulbs)

The low price tag on a traditional bulb is a total trap.

You might pay $1.50 for a filament bulb today, but you will be back at the store 25 times before a single LED burns out. Because an incandescent bulb only lives for about 1,000 hours, the “maintenance” cost becomes a real headache.

When you look at the total cost of ownership, the numbers are staggering. Over 20,000 hours of use, an old bulb setup will set you back over $200 in electricity and replacements.

A single LED doing the same job usually costs less than $40 total.

The math on replacement frequency is where the true cost efficiency of LED shines. If you have 30 light sockets in your home, you would statistically be replacing an incandescent bulb every two weeks. With LEDs, you likely won’t change a single bulb for a decade.

This saves not only the purchase price of those 750 extra bulbs but also the physical labour and time spent climbing ladders.

Note: In many regions, local utility companies offer rebates that make LEDs almost as cheap as old bulbs at the checkout counter.

Energy efficiency (LED vs incandescent bulbs)

The science is simple: incandescent bulbs are incredibly wasteful. They create light by getting a wire so hot it glows. This process loses about 90% of the electricity to heat.

If you touch a bulb and it burns your hand, that is your money being wasted.

LEDs work differently. They convert nearly 80% of energy directly into light.

This efficiency gap is massive when you compare “lumens per watt.” To light a standard bedroom with 800 lumens, an old bulb sucks up 60 watts. An LED does it with just 9 watts.

From a data perspective, a household switching 20 bulbs to LED eliminates roughly 1,000 watts of demand from the grid. This equates to a reduction of nearly 500 pounds of CO2 emissions annually for the average home.

Because LEDs operate at roughly 30°C compared to the 200°C temperatures of incandescent glass, they are also significantly safer and reduce the fire risk associated with high-wattage lighting.

Good to know: Because LEDs don’t produce heat, they also keep your rooms cooler in the summer, slightly lowering your air conditioning load.

ROI of LED vs Incandescent

Think of an LED bulb as a high-yield investment. The Return on Investment (ROI) here is better than almost any savings account. For a typical home, the “payback period” is incredibly short.

Replacing just one 60W bulb with a 9W LED saves you about 51 watts every hour it is on.

If you use that light for 3 hours a day, you save roughly 55 kWh annually. At average rates, that is $8.00 to $10.00 back in your pocket per year, per bulb.

Calculated over a 10-year horizon, the ROI of a $5 LED bulb is approximately 2,000%. While a typical stock market return might hover around 7% to 10% annually, an LED upgrade provides a guaranteed return through avoided costs.

For a business or home with 50 bulbs, the cumulative net profit over the life of the bulbs can easily exceed $5,000 when accounting for current energy inflation rates.

Warning: Don’t wait for your old bulbs to burn out. The energy savings from  LED are so high that you actually save more money by throwing away a working incandescent bulb today.

Also read: Flood Light vs Spot Light: Which is Right for You?

Conclusion

Both incandescent bulbs and LED bulbs can be good choices for your lighting needs. The choice of bulb should be informed by the needs and options available to you.

However, LED light is a more efficient and cost-effective alternative.

It is also better for the environment, as it reduces pollution and promotes sustainability.

With the detailed discussion on the cost implications of each type of bulb, this article has presented you with all you need to choose the most suitable option.