What Size Should My Replacement Furnace Be?02/29/2016 What Size Should My Replacement Furnace Be? If you’re looking for a replacement furnace or will be shortly, you will need to figure out what size of system will work best for your home. Having an accurately sized system is key to its efficiency and the comfort level of your indoor space. With a little research, you’ll be able to find the perfect furnace for your needs. When replacing your system, bigger isn’t always ideal. You will waste a lot of energy and money if you install a system that is larger than necessary. A system that is too large won’t have to run as long, so it’ll be frequently cycling on and off, which can mean extra wear on your system and can lessen the life of your system. An oversized system will not only cost additional money up front, but it will cost you more over time as well. This is a decision you’ll want to dodge. Then there are the issues with a system that is smaller than necessary. If your system is too small, it will run more often to try to heat your space, and it won’t be able to get the job done despite its exertion. A system that is too small will work harder, which will decrease the system’s life span. Additionally, you’ll be paying higher energy bills for a home that’s not sufficiently heated. Have a professional, like those at O'Brien Heating & Air Conditioning perform a load calculation and chat with you on the best system for your replacement furnace needs. How is Load Calculation Determined? In the past, a home’s load calculation was figured based only on square footage. This method often lead to incorrect calculations. With advancements in technology and increased knowledge, things are much more precise nowadays. Your furnace professional will examine your home as a whole, looking at items like its construction, the color of its roof and how well insulated it is. He or she will also consider the climate in the Main Line and the number of people live in your home. This assessment is certainly much more thorough than coming up with a calculation based on square footage alone! If your HVAC system is properly sized it will keep you more comfortable and save you money. At O'Brien Heating & Air Conditioning, we understand that buying a replacement furnace is a major decision. We are here to help you find the best system for your home. We’re only a phone call away at 610-257-7035. You can also schedule an appointment with us online if that’s better for you. We look forward to working with you.