Summary
Operating as an HVAC contractor in Denver requires both state and local compliance. At the state level, Colorado mandates licensing through DORA with specific experience and examination requirements, plus ongoing continuing education. Local Denver requirements include business licensing and adherence to the city's permitting process through Community Planning and Development. All HVAC work requires permits, inspections, and compliance with Denver's building codes, which account for the area's unique high-altitude conditions and climate demands. Insurance and bonding requirements provide consumer protection and are strictly enforced. Success in Denver's competitive HVAC market requires maintaining all licensing, staying current with code changes, and understanding the local climate challenges that affect system design and installation in the Mile High City.
License Requirements
Colorado requires HVAC contractors to obtain a license through the Colorado Department of Regulatory Agencies (DORA). You must hold either a Mechanical Contractor License or an HVAC Technician License depending on scope of work. For mechanical contractor licenses, requirements include 4 years of experience, passing the PSI examination, and maintaining continuing education (8 hours annually). HVAC technician licenses require 2 years experience and passing a trade-specific exam. All licenses must be renewed every 3 years. Additionally, Denver requires a local business license through the Denver Department of Excise and Licenses.
Permit Requirements
All HVAC installations, replacements, and major repairs in Denver require permits through Denver Community Planning and Development. Permits typically cost $100-$500 depending on project scope. Applications can be submitted online through the Denver ePermits system. Required documentation includes equipment specifications, load calculations, and installation drawings. Inspection schedules typically include rough-in and final inspections. Processing time is usually 3-5 business days for standard residential work and 7-10 days for commercial projects.
Insurance Requirements
Colorado requires minimum general liability insurance of $500,000 per occurrence for licensed contractors. Workers' compensation insurance is mandatory for any business with employees. Denver may require additional coverage verification for larger commercial projects. Many clients and commercial projects require $1 million in general liability coverage. Contractors must also maintain a surety bond ranging from $10,000-$25,000 depending on license type and annual revenue.
Typical Cost Ranges
Denver HVAC project costs: Furnace replacement $3,500-$8,000, Central AC installation $4,000-$10,000, Duct cleaning/sealing $800-$2,500, Heat pump systems $5,000-$12,000, Boiler replacement $4,500-$9,000, Whole-house humidifiers $1,200-$3,000, Smart thermostat installation $300-$800. Commercial projects range from $15,000-$100,000+ depending on building size and system complexity. High altitude and Denver's climate variations may affect equipment specifications and costs.
Compliance Checklist
- ✓Obtain Colorado HVAC/Mechanical Contractor License through DORA
- ✓Register for Denver business license with Department of Excise and Licenses
- ✓Secure minimum $500,000 general liability insurance and workers compensation
- ✓Complete surety bond requirements based on license classification
- ✓Register with Denver ePermits system for online permit applications
- ✓Verify technicians hold appropriate Colorado HVAC certifications
- ✓Establish EPA certification for refrigerant handling (Section 608)
- ✓Set up sales tax account with Colorado Department of Revenue