ILLUMINATING BETTER SLEEP, ONE BULB AT A TIME – Harth
“Harth believes that quality sleep begins with quality light. We’re dedicated to creating innovative lighting solutions that work in harmony with your body’s natural rhythms, helping you achieve the restful sleep you deserve.”
Larry Hart
Founder of Harth
Harth STORY
The journey of Harth began with a simple observation: modern lighting was disrupting our sleep. In a world filled with blue-light-emitting screens and harsh LED bulbs, we noticed that people were struggling to wind down at night, tossing and turning, unable to achieve the deep, restorative sleep their bodies desperately needed. This realization sparked a mission that would become the foundation of our company. Our founder, after years of research into circadian biology and the science of light, discovered that the solution wasn’t about eliminating light entirely but rather about choosing the right kind of light at the right time. Ancient humans lived by firelight in the evenings, a warm, amber glow that signaled to their bodies that it was time to prepare for rest. Modern artificial lighting, however, floods our homes with blue wavelengths that trick our brains into thinking it’s still daytime, suppressing melatonin production and disrupting our natural sleep-wake cycles. Determined to bridge this gap between modern convenience and biological necessity, Harth was born. We set out to create lighting products that would allow people to enjoy the benefits of electric light without sacrificing their sleep quality. Through extensive testing and collaboration with sleep scientists, we developed our signature amber-spectrum bulbs and sleep-optimized lighting solutions. Each product is carefully engineered to filter out the blue wavelengths that interfere with melatonin production while providing sufficient illumination for evening activities. What started as a passion project has grown into a movement. Thousands of customers have transformed their evenings and reclaimed their sleep by switching to Harth lighting. We’ve heard countless stories of people who, after years of sleep struggles, finally found relief simply by changing their light bulbs. These testimonials fuel our commitment to innovation and excellence. Today, Harth stands as a leader in sleep-optimized lighting, continually pushing the boundaries of what’s possible when science meets design.
Harth Team
Jeremy Ortiz
CEO, Director
Kyle Holland
Sales Manager
Patricia Sullivan
Marketing Consultant
F.A.Q.
Have any Question about Harth?
How do Harth amber bulbs help improve sleep quality?
Harth amber bulbs are specifically designed to filter out blue and green light wavelengths that suppress melatonin production, the hormone responsible for regulating your sleep-wake cycle. Standard LED and fluorescent bulbs emit high levels of blue light (around 480 nanometers), which signals to your brain that it’s daytime, keeping you alert and awake. Our amber bulbs emit light exclusively in the 590-610 nanometer range, providing warm, comfortable illumination without disrupting your natural circadian rhythm. By using Harth bulbs in the evening hours, typically 2-3 hours before bedtime, you allow your body to naturally produce melatonin as it would at sunset. This helps you fall asleep faster, experience deeper sleep cycles, and wake up feeling more refreshed. Many customers report noticing improvements within just a few days of switching to Harth lighting in their bedrooms and living spaces.
When should I start using amber bulbs in the evening, and do I need to replace all my bulbs?
For optimal results, we recommend switching to Harth amber bulbs approximately 2-3 hours before your desired bedtime. This timing aligns with your body’s natural melatonin production schedule and gives your circadian system adequate time to prepare for sleep. You don’t need to replace every bulb in your home; instead, focus on the spaces where you spend your evening hours. Most customers start by installing amber bulbs in bedrooms, living rooms, and bathrooms, as these are the areas most commonly used before bed. You can continue using standard bulbs during daytime hours in other areas like home offices, kitchens (during morning hours), and outdoor spaces. Some customers choose a hybrid approach, keeping a few standard bulbs in areas where they occasionally need bright task lighting in the evening, such as a craft room or garage. The key is creating an amber-lit environment in your primary living spaces during those crucial pre-sleep hours when melatonin production should be increasing naturally.
Can I use Harth amber bulbs for reading or other activities, or are they too dim?
Harth amber bulbs provide plenty of light for evening activities including reading, cooking, watching television, and general household tasks. While the amber spectrum creates a warmer, softer glow compared to bright white LEDs, our bulbs are available in various wattage equivalents (40W, 60W, 75W, and 100W) to suit different needs and room sizes. The key difference isn’t brightness level but rather color temperature and spectral composition. You’ll be able to see clearly and comfortably; the light simply won’t have the harsh, blue-tinted quality that disrupts sleep. Many customers actually prefer the cozy, relaxing atmosphere created by amber lighting for evening relaxation. For reading specifically, we also offer dedicated amber book lights that provide focused illumination without disturbing sleep partners. If you’re concerned about brightness, we recommend starting with a higher wattage equivalent than you typically use, as the warmer tone may initially seem different from what you’re accustomed to.
Are Harth bulbs energy-efficient, and how long do they typically last?
Yes, Harth bulbs are highly energy-efficient LED technology that consumes up to 80% less electricity than traditional incandescent bulbs while providing equivalent light output. For example, our 60W equivalent amber bulb uses only 9-10 watts of actual power, significantly reducing your energy costs even if you use them for extended periods each evening. The average lifespan of Harth LED bulbs is approximately 15,000-25,000 hours depending on the specific model, which translates to roughly 3-5 years of typical nightly use (about 4-6 hours per evening). This longevity means fewer replacements, less waste, and better long-term value compared to both incandescent and many standard LED alternatives.
THE SCIENCE BEHIND OUR PRODUCTS
Understanding the relationship between light and sleep is at the core of everything we do at Harth. Our products are built on decades of peer-reviewed circadian research that demonstrates how light exposure directly impacts our sleep hormones, alertness levels, and overall health. We don’t just create lighting products; we create scientifically-validated tools for better living. The human eye contains specialized photoreceptors called intrinsically photosensitive retinal ganglion cells, which are particularly sensitive to blue light wavelengths around 480 nanometers. When these cells detect blue light, they send signals to the brain’s suprachiasmatic nucleus, effectively telling your body that it’s daytime. This triggers a cascade of physiological responses: melatonin production is suppressed, cortisol levels rise, and your body enters an alert, wakeful state. While this response is beneficial during daylight hours, exposure to blue light in the evening can delay your natural sleep onset by two to three hours. Harth’s amber bulbs are specifically engineered to emit light in the 590-610 nanometer range, producing a warm, golden glow that provides ample visibility without triggering the alertness response. By filtering out virtually all blue and green wavelengths, our bulbs allow your body to naturally produce melatonin as evening progresses, maintaining your circadian rhythm even in the modern world. Independent laboratory testing has confirmed that our bulbs reduce blue light exposure by over 99% compared to standard LED bulbs.
Harth COMMITMENT TO QUALITY
Quality isn’t just a buzzword at Harth; it’s the foundation upon which we’ve built our reputation. Every product that bears the Harth name has undergone rigorous testing, quality control, and validation to ensure it meets our exacting standards. We believe that sleep is too important to compromise on, which is why we refuse to cut corners in our manufacturing process or materials selection. Our bulbs are constructed using premium-grade components sourced from certified suppliers who share our commitment to excellence. The amber glass coating that gives our bulbs their distinctive hue is applied using a specialized process that ensures uniform coverage and consistent light output. Unlike cheaper amber bulbs that use tinted plastic housings or inferior coatings that degrade over time, Harth bulbs maintain their spectral properties throughout their entire lifespan. We conduct extensive burn-in testing, running sample batches for thousands of hours to verify longevity and performance stability. Energy efficiency is another area where we refuse to compromise. Our LED technology delivers the warm, sleep-friendly light you need while consuming a fraction of the energy used by traditional incandescent bulbs. This means you can leave your Harth bulbs on throughout the evening without guilt or worry about your electricity bill. Many customers report that their Harth bulbs have lasted for years of nightly use, representing not just an investment in better sleep but also exceptional long-term value. Beyond the products themselves, our commitment to quality extends to customer service and satisfaction. We stand behind every item we sell with comprehensive warranties and responsive support. If you ever encounter an issue with a Harth product, our team is ready to make it right. We’ve built our business on trust and transparency, and we work tirelessly to earn and maintain that trust with every interaction. When you purchase from Harth, you’re not just getting a superior product; you’re joining a community that values quality, integrity, and the pursuit of better sleep.
TRANSFORM YOUR SLEEP TONIGHT – Harth
Experience the difference that sleep-optimized lighting can make. Browse our collection of amber bulbs, book lights, and sleep-friendly solutions. Your best sleep is just a click away.