As we venture further into the era of climate change, humans are constantly searching for ways to decrease energy consumption and increase efficiency. Unfortunately, there's no silver bullet. Truly reducing our impact on the global climate requires a combination of an increase in renewable power generation, behavioral changes to decrease consumption and increasing the efficiency of our homes and appliances. Even as we strive for improvement, sometimes we fall short. According to a new study from the University of California, Berkeley, for example, a federal Weatherization Assistance Program is not bringing in the expected efficiency benefits.

Looking for the Win-Win

Investments in home efficiency are usually considered win-win scenarios. Reductions in energy consumption lessen the impact on the environment and reduce energy bills at the same time. Many upgrades, like replacing an outdated refrigerator with a new Energy Star-certified model, will eventually pay for themselves in energy savings.

However, not every savings promise comes through. The Berkeley study looked at 30,000 households in Michigan that upgraded their home systems with new insulation, weather stripping, HVAC equipment and more. The federal government paid up to $5,000 per house for the improvements, but the average household only realized $2,400 in savings during the lifespan of their new efficiency features. That's not a great return on investment.

Ancillary Benefits

The households saved 10 to 20 percent on their energy costs, on average, which is only about 40 percent of what they were projected to save. The results are discouraging for consumers who are striving to implement any cost-saving measures they can find. Electricians and home service technicians can help you upgrade your home systems, but the changes will only go so far.

There were other benefits to the weatherization program outside the raw financial data, of course. The investments were aimed at low income households, so the money saved helped reduce poverty in the area. Plus, the reduction of carbon in the atmosphere from the program has additional economic benefits. Nevertheless, the disappointing result could be a blow to the willingness of the government to make similar investments in the future.

Let the Buyer Beware

The big lesson for the consumer? Don't believe just any claim about energy efficiency, and do your due diligence before investing in a big-ticket upgrade. You can and should make efforts to reduce your energy consumption, but be careful not to blow your investment dollars on items that don't give you a good return.

"This underscores the value of field-testing," paper author Michael Greenstone said to Vox. "Particularly in a world where economy-wide carbon pricing does not look feasible, we should be redoubling our efforts to find those CO2 reduction measures that have the biggest bang for the buck."

If you need advice on how to get the best return when it comes to energy efficiency, find an experienced electrician who can help you invest your dollars wisely and steer you away from less effective purchases.

It doesn’t feel like it yet, but fall is coming! Cooler weather and clearer nights are on the way; perfect time for some home hot tub relaxation. But when our electricians in Baltimore talk hot tubs, we have some concerns. These stem from various issues, but they can all mean one thing in the end: danger.

At Kolb Electric, your safety always comes first. Yes, even before our service (though you might argue that they go hand-in-hand; we would). If you’re considering a hot tub installation, or you’re just getting primed and ready to make use of the one you have, there are some factors we would like you to consider.

Looking for industry-leading electricians in Baltimore for your hot tub or home appliance wiring? Contact Kolb today!

The definition of the word faulty is “working badly or unreliably because of imperfections”, so when we’re talking wiring, faulty can mean old or damaged, or poorly installed. Both of these are equally dangerous and can lead to electric shock, electrocution, and fires! It’s serious business and we aim to help ensure you never deal with these potential threats.

So why are we so worried about hot tubs? Aside from the fact that they’re almost literally giant bathtubs with an electric current, once they’ve been installed many homeowners opt to never have the wiring inspected for water damage or replaced.

And even further beyond, some homeowners regard hot tub wiring as a DIY job. It’s really, really not. Wiring can get complex, and when you’re dealing with something as potentially volatile as electricity (especially when that electricity is surrounded you water!), even the tiniest mistake can become a harmful and even deadly issue.

So how do you get the glorious hot tub you’ve always dreamed of with none of the risks? Do these:

Hot tubs are made to be enjoyed, not worried over! When you’re ready for an installation, trust in the team at Kolb. Or if you’ve already got a hot tub, let our team make sure your system is working safely and effectively. Contact our experts today for the superior service and safety assurance you deserve!

When we talk about replacing commercial and industrial lighting, we always try to alleviate the current costs that old and inefficient lighting fixtures incur while keeping (if not improving) our current quality of light in place. This is done with the obvious options such as:

With any lighting technology, whether that be Metal Halide, HPS, Florescent, or LED, they all suffer from something we call lumen depreciation.

Lumen depreciation is the process in which the total output of lumens a fixture produces decreases during its life. The rate at which a fixtures lumens depreciate can depend on a multitude of factors which include (but are not limited to): the type of lighting technology used, total hours used, and various other factors.

Did you know that florescent and LED lighting are typically the lowest to depreciate it’s lumens, while technology like Metal Halide and HPS are typically the fastest to depreciate it’s lumen output?

While LED is the the winner overall, florescent lights aren’t too far behind and not nearly as bad as Metal Halide or HPS lights. Here at MyLEDLightingGuide, we would recommend you get an LED for a lot more reasons then just slower lumen depreciation. email us directly.

The jargon in the lighting world can often get mixed up. Color rending index (CRI) and color temperature are one of the most to be confused with each other. This post is going to clarify what the different between CRI and Color Temperature is so we can end this confusion.

Here is a short explanation why the CRI is more important to focus on before deciding for a color temperature. The color rendering index is the most important feature in certain applications as it determines the appearance of objects, faces and spaces. If this aspect is not relevant, the CRI can be as low as 60 or even 40.

The color rendering index (CRI) is a numeric evaluation of the light color accuracy with the reference of daylight (numbered 100). Sunlight and its broad spectrum will enable a person with normal vision to see 68 different colors in a color chart, but if the chart is illuminated by a light source of one wavelength only, each color from the color chart will appear as a different brightness of that one color. Some activities, such as walking or operating a vehicle, do not require the accurate perception of surface colors while others such as product selections in shops benefit from better color rendering features. Look at the application of the lighting installation. If the visual tasks are easy to perform the CRI doesn’t need to be high. In areas like offices, handcraft manufacturing and surgery, the requirements for visibility, contrast, visual guidance as well as face recognition need to be provided by a lighting system with a good CRI of >80 or even >90.

How much is the light color affecting the space? The term color temperature describes the temperature of objects by which they emit light, modeled through the “blackbody radiator”. When increasing the temperature of a “blackbody”, it starts to emit visible light in a continuous spectrum. The filament of a 60W incandescent lamp heats up to about 3000°F, as a result the lamp emits light with a color temperature of 3000K. Many of our artificial light sources do not create light by heating up a material until it glows like an incandescent lamps. Instead of creating a continuous spectrum, they generate an assortment of color emission lines. A blackbody color temperature cannot be directly given to this non-blackbody type of emission, generated by high intensity discharge and fluorescent lamps for example. For those light sources, a correlated color temperature (CCT) is indicated, based on the blackbody color temperature. A cool white fluorescent lamp has a CCT of about 5000K. The lamps light spectrum is different from a blackbody one but has the same temperature.

The light color influences the atmosphere in a space. The more cozy the ambiance the warmer the light color (lower color temperature) should be and the more dynamic the scene the cooler the light source (higher color temperature). The CRI is the most important factor to watch when choosing light sources. How good is the light source representing faces, colors and contrasts? The easier the visual task and perception the lower the CRI can be. The color temperature needs to be watched second, it is supporting the space’s atmosphere.

Conclusion

There you have it; an explanation of both the Color Rending Index and Color Temperature.

Have anymore questions or thoughts? Comment them down below!