Dave Burtner has written 140 articles

Dave has been active in the lighting industry since 1994. Formerly a member of the Illuminating Engineering Society of North America and certified by the National Council On Qualifications for Lighting Professionals, Dave now writes blog posts, lighting tips and provides lighting product assistance for the Topbulb website.

LED Direct Replacement: A Guide for 26W, 32W and 42W 4-Pin CFLs

Before LED replacement lamps arrived on the scene, CFL pin-based lamps were the preferred light source for commercial downlights. Because of lower energy and demand costs compared to incandescent or halogen, CFL recessed downlights became a common feature in commercial, retail, hospitality and similar spaces. Various independent studies have shown that the installed base of…

Step-by-Step Guide: LED Troffer Replacement

LED Troffer Selection Guide

Fluorescent troffers are  the single most common fixture type in commercial spaces in North America. Offices, retail, education, medical centers, laboratories, retirement homes – the list goes on – most utilize troffers in their facilities. The vast majority of currently installed troffers have fluorescent tube (T5, T8, T12) light sources. Today, the LED alternative to…

Connected Control: Know Your Options for Commercial Outdoor Fixtures

Among all the factors to consider when buying an LED outdoor luminaire – here is another: connected controls. Increasingly, commercial building codes are expanding outdoor lighting requirements to include automatic shutoff and modulated light levels based on occupancy or time of day. This level of control, common for commercial interior lighting, may or may not…

MR16 Luminous Intensity: How Does LED Stack Up Against Halogen?

We’ve written here before about one of the toughest problems for manufacturers of LED replacement lamps: achieving light intensity comparable to halogen in the MR16 form factor – particularly for narrow beam distribution. The initial blog post was written in 2014, then updated in late 2016. The update concluded by stating that new breakthroughs in…

Lighting Reference: New Smart Phone & Tablet App from the IESNA

The Illuminating Engineering Society of North America (IESNA) has recently released a Lighting Ready Reference app for smart phones and tablets. Loaded with useful, concise lighting information, this app can be a handy look-up reference for specifiers, electrical contractors, facility managers and educators.   Information included in the app ranges from specification tables to lighting…

LED Fixture Efficacy vs Quality of Light: Recent Study Provides Insights

For several years, the mantra around LED lighting has been the significant rated life and efficacy (lumens/watt) advantage it has over most other light sources. Longer life means fewer bulb changes which translates into reduced maintenance costs for facilities. Better efficacy means lower energy costs. Both of these advantages are quantifiable and allow a straightforward…