Olympia, WA– CDC-TV presents Health Matters: The Quiet Killer. Each year approx. 20,000 people in the US are hospitalized. Do you know the dangers? It can kill you in minutes. Make sure that your home is properly ventilated by Black Hills Inc. to optimize your safety while at home. Watch this video and stay informed. For more information on how we can help you with your HVAC needs, contact us now at (360) 558-3242 for a free consultation.