Ribbon Cutting celebrating Patterson Comfort & Safety. Patterson Comfort & Safety  is Dubuque, Iowa's leading provider of residential and commercial quality heating, air conditioning, radon mitigation and testing, service and repair. We also offer the convenience and peace of mind knowing you can stop one place to see a complete selection of fireplaces, inserts, stoves, surrounds, brick and stone products, and accessories. Ask about our free indoor air quality evaluation to help you improve the air quality in your home or business.