There is a lot of debate on this topic with some people saying that fireplaces heat better with glass doors closed and others saying that they work just as well with the doors open. We did some research to try and find the answer to this question and here is what we found.
It turns out that it depends on the type of fireplace you have. If you have a traditional wood-burning fireplace, then it is actually more efficient to keep the glass doors closed while the fire is burning. This is because the glass helps to trap in heat and prevents warm air from escaping up the chimney. However, if you have a gas fireplace, then it is generally recommended to keep the glass doors open while it is running. This allows for better airflow and prevents the build-up of carbon monoxide fumes in your home.
So, there you have it! The answer to whether or not fireplaces heat better with glass doors closed depends on the type of fireplace you have. If you have any further questions about this topic, be sure to consult with a professional before making any decisions.