If you are like most Missourians, a lot of thought has been given to your gas furnace these past few weeks.
With freezing temperatures and snowstorms, yours has probably been getting quite the workout. Hopefully you had a maintenance check done earlier this season, and are getting continued warm air every day. You may be noticing that your energy bill though is a bit higher than last years. This could be a result of your furnace aging, and may warrant a conversation with your HVAC technician about changing it out for a new model.
Choosing a New Gas Furnace
Gas furnaces are typically built to last around 25 years. But with constant improvements in efficiency, yours may already be way behind those on the market today. Making the choice to install a new gas furnace and then choosing one is not something you should do without help. There are dozens of Energy Star rated models available, but you need to make sure that the one you choose is an improvement on your existing unit and suited to warm your entire home.
Performing a Load Calculation
The first thing your HVAC technician should do is perform a load calculation of your home. This will help determine how big of a gas furnace you will need. Remember, with a furnace, bigger does not always mean better. There are a number of things that affect the load calculation, starting of course with the size of your home. The type of foundation and roof are also looked at. Even the color of your roof. The HVAC technician should also inspect the insulation to see the type and quantity you have. Windows and doors also make an impact, especially the quantity and where they are located.
After this, he may ask you some questions, specifically the desired temperature inside the house and the number of people living there. This is a guide for replacing a unit where duct work is already in place. For new home installations, there is a more advanced version that will require room by room measurements to determine how many vents are needed.
Consulting an HVAC Company
You cannot assume that replacing your furnace with one that is the same size is the right way to go. The initial load calculation may not have been accurate which is what is causing you issues now. Or changes in the home since the initial construction could affect the size needed, such as the addition of a sun room or conversion of a basement into a work space. Whatever the case, before making any type of decision on a new gas furnace, make sure that an HVAC company is consulted.
Replacing a gas furnace should not take more than a few hours to complete. Doing it yourself is not recommended. For one, you are dealing with a natural gas, which could potentially explode. Plus you are having a brand new, warrantied appliance added to your home. Not having it properly installed by a professional could void that warranty. Stay safe and be smart; call Air Excellence Heating and Cooling at (636) 980-0998 and have us do the load calculation, help you choose the right furnace and install it for you.
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