The furnace size you need depends on the size of your home. Furnace sizes are measured according to BTU output. BTU stands for British thermal unit, and it is a unit of heat. The size of your home is the main factor in determining the BTU output required. For example, a 1,500 square foot house should have a furnace with a minimum output of 40,000 BTUs and a maximum output of 90,000 BTUs. Anything less than 40,000 BTUs and your furnace may not be able to effectively heat your home. 

Replacing and installing a new furnace usually takes several hours to complete. The exact time frame varies greatly but can be anywhere between four and ten hours. Your Comfort Group technician will provide you with an estimated timeline when they arrive. 

Furnace warranties vary by manufacturer and are usually separated into two categories: limited parts or base parts warranty and the registered warranty. Limited parts or base parts warranties typically last between five and ten years (with the exception of warranties for heat exchangers which can last up to 20 years), and registered warranties are usually around ten years. Contact your manufacturer to find out the specifics of your furnace warranty.

Yes, experts recommend replacing your furnace filter every 90 days. If you have a permanent filter, then it doesn’t need to be replaced but it should be cleaned every three months. Since filters are responsible for collecting dust, dirt, and hair, they should be cleaned regularly to prevent a build-up. A build-up of such debris can lead to all sorts of problems with your furnace, such as restricting airflow in the home and unevenly heating rooms.