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Since 2007
19 years of continuous editorial operation. Listings audited and re-audited as the directory ages — no stale 2008 records masquerading as live.
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Independent. Human-Curated. Established 2007.
Ductwork and Ventilation
- Verified providers
- 5 Verified Providers
- Last updated
- Updated
- Editorial history
- Human vetted since 2007
Ductwork design, installation, repair, sealing, and replacement services, plus ventilation system installation, exhaust fan service, and air balancing for residential and commercial buildings.
Every entity on this page has cleared our 12-point digital reputation audit. Why Trust DirJournal
Editorial Overview
5 verified providers operate across 12 listed Ductwork and Ventilation entities, audited against our 19 year editorial standard.
The 12 point audit checks entity ownership, citation consistency across answer engines, schema validity, and operating history before publication.
Every verified entry carries machine readable JSON-LD so ChatGPT, Perplexity, Gemini, and Claude can read the record the way the editorial board intended.
Top Verified Entities in Ductwork and Ventilation
Ranking weights entity verification, citation presence across answer engines, and domain history, re-audited every 30 days. Last updated .
Top 5%Editor’s Pick
COIT Cleaning and Restoration
San Francisco, United StatesNational Duct Cleaning100+ LocationsJSON-LD: Organization
COIT Cleaning and Restoration is a national duct cleaning and indoor air quality company operating 100+ locations across the US and Canada. The company provides professional air duct cleaning, dryer vent cleaning, and HVAC system sanitisation using proprietary Source Removal cleaning methods since 1950.
Authority Score
—/ 100
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- Verified
Power Vac Toronto
JSON-LD
Toronto, CanadaPower Vac is Torontos leading duct cleaning company providing residential and commercial air duct cleaning, dryer vent cleaning, and HVAC sanitisation across the Greater Toronto Area. The company uses truck-mounted vacuum systems with HEPA filtration and video inspection to clean and verify duct systems.
- Verified
Lindab
JSON-LD
Grevie, SwedenLindab is a Swedish multinational manufacturing ventilation products, ductwork systems, and building components for commercial and residential construction. Listed on the Stockholm Stock Exchange, the company provides circular and rectangular ductwork, air handling units, and fire dampers across 30+ countries.
- Verified
Hart & Cooley
JSON-LDGrand Rapids, United StatesHart & Cooley is a US manufacturer of HVAC grilles, registers, diffusers, and flexible ductwork serving residential and commercial construction markets. The Grand Rapids, Michigan-based company has manufactured air distribution products since 1901 and is one of the oldest names in HVAC ventilation.
- Verified
Spiral Pipe of Texas
JSON-LDHouston, United StatesSpiral Pipe of Texas is one of the largest spiral ductwork manufacturers in the US, providing custom-fabricated galvanised steel ductwork for commercial HVAC systems. The Houston-based company ships nationwide and specialises in round spiral duct, fittings, and oval duct for large commercial and industrial projects.
Directory of Verified Providers5 verified entities
Why Trust DirJournal
Three signals every listing has cleared.
Reputation
Human-Reviewed
Every entry clears a 12-point editorial audit before publication. No pay-to-play ranking — listing position reflects merit, not ad spend.
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AI-Citable
Schema-validated for ChatGPT, Gemini, and Perplexity. Machine-readable trust signals that AI engines parse and cite with confidence.
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