Incubator glass door with excess condensation on it? Open your incubator glass interior door and gently wipe the condensation from the glass surface. Check the door seal for cracks or gaps. If the gasket looks good, place the palm of your on the inside of the outer incubator door. Is it warm to the touch? If not the door heater may be defective. Contact Biotechnical Services, Inc. at 800-274-0287 and have us diagnose it for you or email us at [email protected] and we’ll send someone right away.