We keep our LEDs cool for superior LED life.

EcoFit had an independent test laboratory, the Advanced Manufacturing Institute, test the performance of our products under a variety of ambient conditions. Download the AMI report, which shows that the DuraStreet Series LED Light Engine maintains T_J —the most critical measure of LED performance and long life—at or below the recommendations published by our LED suppliers, Cree.

AMI Heat Testing Data Report

(.pdf download)

Using the AMI test data for a specific drive current and outdoor temperature, the L₇₀ lifetime expectancy is calculated by combining measured ambient and junction temperatures with LM-80 data from the LED manufacturer (Cree). An example using the Durastreet 42 Series unit operating at 525mA is provided below.

Charts courtesy of Cree.

Combining the AMI data with the graph above yields the following L₇₀ lifetime calculations for a variety of outdoor temperatures.

Example: DuraStreet 42 Series (525mA)
Outdoor Temperature (°C)	Ambient LED Temperature (°C)	Junction Temperature (°C)	Expected L₇₀ (hours)*
0 / 32	21.4	58.3	>100,000
5 / 41	26.0	62.7	>100,000
10 / 50	31.4	68.1	>100,000
15 / 59	35.6	72.3	>100,000
20 / 68	39.9	76.4	>100,000
25 / 77	44.6	80.6	>85,000
30 / 86	48.6	84.6	>80,000

For example, when the DuraStreet 42 Series (525mA) is operated at an outside temperature of 25°C (or about 77°F), the ambient temperature is 44.6°C and the LED junction temperature is 80.6°C, yielding L₇₀ life expectancy of > 85,000 hours. The L₇₀ life expectancy of each EcoFit product is provided in the specification sheets.

To see determine the lifetime of EcoFit’s LED replacement modules for your area, please reference the average annual nighttime temperature map below:

But just don’t take our word for it… Download the full AMI report., and see the results for yourself.

Lifetime Expectancy and Heat Data (LM-80)

We keep our LEDs cool for superior LED life.

AMI Heat Testing Data Report