As a consumer you should expect your contractor to be trained in current technology that makes sure you’re heating system is safe, comfortable and efficient. These are probably things you may expect are mandatory, but unfortunately they’re not. The number one benefit of having an NCI Certified CO/Combustion Analyst test your home and appliances for carbon monoxide is his extensive training and knowledge. Your contractor should be trained to measure the safety and efficiency of all your combustion equipment, even appliances that he doesn’t normally sell or service. Thorough testing can also verify that your equipment is operating at peak efficiency and provide the lowest operating costs. Finally, he should provide you with documentation that explains what he has found and what corrections have been or need to be performed. He should also provide you with material to better educate you about carbon monoxide sources and health effects.