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September 2026
Top 5 fire testing laboratories in the United States
Of the 13 fire testing laboratories in the United States listed in the OpenFire directory in September 2026, these profiles were viewed most by people and AI assistants.
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#1
Jensen Hughes
Fire safety experts at the forefront of hazard prevention.
Consultancy 21–100 people 73 officesBuilding safety disputes CFD modelling Compartmentation +13 moreHelsinki, Uusimaa · HQ View company -
#2
Southwest Research Institute
One of the largest fire research organisations in the world.
Testing & certification 100+ people 1 officeFire resistance testing Reaction to fire testing Smoke & toxicity testingSan Antonio, Texas View company -
#3
Guardian Fire Testing Laboratories
Fire testing, inspection and product certification under one roof.
Testing & certification 6–20 people 2 officesProduct certification & approvals Fire resistance testing Reaction to fire testingBuffalo, New York · HQ View company -
#4
Intertek
Four full-service fire laboratories in North America.
Testing & certification 100+ people 5 officesProduct certification & approvals Fire resistance testing Reaction to fire testingElmendorf, Texas · HQ View company -
Joint #5
ICC Evaluation Service
Evaluation reports the model codes are read against.
Testing & certification 100+ people 3 officesProduct certification & approvals Fire resistance testingBrea, California · HQ View company -
Joint #5
NGC Testing Services
Full-scale fire, acoustic and building-envelope testing at Buffalo.
Testing & certification 21–100 people 1 officeFire resistance testing Reaction to fire testingBuffalo, New York View company
Browse all fire safety companies in the United States →
Companies are ranked by how often their OpenFire directory profile was viewed during the calendar month, by people and by AI assistants. Search-engine crawlers, other automated traffic and link previews are not counted. Companies with equal views share a rank.
A company with offices in several countries, or working across several categories, is ranked in each of them on the same monthly total. A ranking is only published where enough companies are listed and viewed for it to be meaningful.
A ranking reflects interest in a company's listing. It is not an endorsement, and it is not a check of a company's competence, certification or accreditation.