{"id":1422,"date":"2021-03-29T11:00:27","date_gmt":"2021-03-29T15:00:27","guid":{"rendered":"https:\/\/www.atlanticrefrigeration.com\/blog\/?p=1422"},"modified":"2021-03-25T18:39:17","modified_gmt":"2021-03-25T22:39:17","slug":"how-tell-how-big-furnace-need","status":"publish","type":"post","link":"https:\/\/www.atlanticrefrigeration.com\/blog\/heating-service\/how-tell-how-big-furnace-need\/","title":{"rendered":"How Can I Tell How Big a Furnace I Need?"},"content":{"rendered":"\n
\"Gas-Furnace\"<\/figure><\/div>\n\n\n\n

If you\u2019re asking this question, it\u2019s because you\u2019re looking to replace an older furnace (or you\u2019re putting in the first furnace in a new house) and you understand that if you end up with one that\u2019s not powerful enough\u2014\u201cundersized\u201d\u2014the house won\u2019t be comfortable. You might not know that going too far the other direction, an \u201coversized\u201d furnace, is also a huge problem. You need to know a specific size to get the best performance.<\/p>\n\n\n\n

So \u2026 how do you do that?<\/p>\n\n\n\n\n\n\n\n

You\u2019ve already made an excellent first step, because you\u2019ve sought out a professional opinion. Sizing a furnace is tricky, and it isn\u2019t something you can do by watching an online tutorial or running down a checklist. Although you may find DIY methods to size a furnace, we don\u2019t recommend trying to do this unless you\u2019re a professional. Putting in the wrong furnace in a house isn\u2019t a mistake that can be easily corrected with furnace repair in Middletown, DE<\/a>!<\/p>\n\n\n\n

Allow Professionals to Size Your Furnace<\/strong><\/h2>\n\n\n\n

Think of this as a shortcut. You don\u2019t have to do much work at all\u2014only call our professionals and tell them you want a new furnace installed. You will eventually need professionals to do the work of putting the furnace in place, so it\u2019s best to have them on the job early so they can consult with you about your various choices and accurately size the furnace.<\/p>\n\n\n\n

Professionals handle sizing a furnace by doing something called a load calculation<\/em>. This is a calculation of various factors about the house that determine the tonnage of heat necessary to keep people in it warm without wasting energy. (Tonnage<\/em> in this case is the amount of heat needed to melt one ton of ice. It\u2019s a convenient measurement when dealing with large amounts of heat.) <\/p>\n\n\n\n

The heat load calculation looks at the following factors about the house:<\/p>\n\n\n\n