In the 1 153 days starting September 29, 2021, until today, there have been 7 checks on efficientwindows.org's operability. On November 23, 2024, efficientwindows.org was confirmed up for the 7 time from all assessments conducted, by a 200 status code. Reviews performed as of November 25, 2024, found no cases of efficientwindows.org being inoperable. No responses have an error status as of November 25, 2024, according to all received replies. Data shows a 2.099 seconds efficientwindows.org response time on November 23, 2024, compared to 1.728 seconds on average.