First Defense
Commercial services · Monroeville, Pennsylvania
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Products & Services
About First Defense
Latest News WTS | First Defense provides a wide-range of facility management services including asset protection of critical systems including boilers, cooling towers, RTU’s, generator switchgear, potable water, wastewater, and Legionella prevention services.
Its primary NAICS classification is 561210 (Facilities Support Services). First Defense is one of 784,164 Industrial & mechanical companies listed in Pennsylvania.
Business Contact Information
- Phone
- +1 (800) 8175116
- Website
- www.wtsfirstdefense.com
- Address
- 203 Townsend Dr, Monroeville, Pennsylvania, 15146, United States
Industry & Classification
- Industry
- Industrial & mechanical
- Sector
- Commercial services
- Segment
- Office service
NAICS Codes
- 56Administrative and Support and Waste Management and Remediation Services
- 5612Facilities Support Services
- 561210Facilities Support Services
SIC Codes
- 87Engineering, Accounting, Research, Management, And Related Services
- 874Management And Public Relations Services
- 8744Facilities Support Services
Company Details
- Employees
- 15 (11-20)
- Annual Revenue
- $3.4M ($1M-$5M)
First Defense: frequently asked questions
What does First Defense do?
Latest News WTS | First Defense provides a wide-range of facility management services including asset protection of critical systems including boilers, cooling towers, RTU’s, generator switchgear, potable water, wastewater, and Legionella prevention services.
Where is First Defense located?
First Defense is headquartered at 203 Townsend Dr, Monroeville, Pennsylvania, 15146, United States.
How many employees does First Defense have?
First Defense has about 15 employees (the 11-20 range).
What is First Defense's annual revenue?
First Defense's annual revenue is estimated at $3.4M (the $1M-$5M range).
What industry is First Defense in?
First Defense is in the Industrial & mechanical / Commercial services industry, and its primary NAICS code is 561210 (Facilities Support Services).
How can I contact First Defense?
Its website is www.wtsfirstdefense.com and its phone number is +1 (800) 8175116.
Largest companies in Pennsylvania
Largest industrial & mechanical companies
Manufacturing sales in Pennsylvania, 2026
In Pennsylvania, Factur's 2026 study counted 44 manufacturing quotes worth $1.6M and 10 purchase orders over 12 months: 23% of quotes became orders, against 21% nationally. See the Pennsylvania data.
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