January 5, 2026
The economic stress of rising costs definitely rears its head a bit more during the fall and winter seasons. Not only is this the traditional holiday season, but it’s also the heating season. ‘Tis the season to shell out more money for fuel costs to run that furnace. In a place like St. Louis, it’s going to be very frigid, and those bills may definitely start to climb. One solid way to save money going forward is to actually go with a new furnace. It may seem counter-intuitive, but new equipment can save you money in the long run.
At Scott-Lee Heating Company, we want to help you prepare for long-term savings here. Older furnaces can chew through energy costs like crazy, running your bills up dramatically. With the right cost guide, you can find an affordable furnace that will instantly start saving you money on your monthly expenses. Let’s have a look at purchasing a new furnace.
1. Average Cost of Furnace Replacement in St. Louis
The first thing we want to have a look at here is the average cost of a new furnace in the area. If it’s a replacement furnace, then we’ll assume you already have the ductwork installed in your home and a preexisting hookup for your furnace. So, it’s basically just as simple as replacing the heating unit. In this case, you can expect to pay between $3,500 and $7,500 for a quality furnace. This includes the equipment and the installation. Of course, some really high-end models can cost a lot more.
The big swing here in pricing is due to factors like fuel source and the size and efficiency ratings of different units. There is no one single set price we can give you. However, when you call us, we will find the perfect heater for you, based on your home size and your requirements. This will help you save some money.
2. Fuel Type and Equipment Pricing
The type of fuel you will be using is one of the biggest factors in the upfront price of your equipment. Natural gas is always a popular choice due to its availability and heating power, but electric and propane options are also common. Here are some ranges for furnace prices, including installation:
- Natural Gas Furnaces: $3,500 to $7,500
- Electric Furnaces: $2,800 to $5,500
- Propane Furnaces: $4,000 to $7,500
- Oil Furnaces: $5,500 to $9,000
When you’re purchasing a new furnace, it’s important to look at the long-term heating costs. This matters a lot more than the upfront price. So, you definitely want to consider which energy source is going to be the most affordable for you month to month.
3. Efficiency Ratings and Long-Term Savings
The Annual Fuel Utilization Efficiency (AFUE) rating is something you definitely need to know when purchasing a new furnace. This percentage tells you how much of the fuel is converted into heat for your home versus how much is lost through the flue. Some furnaces convert almost all of their fuel into heat, while others don’t do so well. The more fuel a furnace can convert into heat, the less you have to pay to operate it.
Standard-efficiency units typically offer an 80% AFUE rating. This is actually on the low end; you want something much higher than this. High-efficiency models are a bigger upfront investment, but they can reach 96% to 98% AFUE. Their initial price tag scares a lot of people away, but they can reduce your heating costs by up to 20% each year. In a few years, the unit pays for itself in savings.
4. The Impact of Home Size on Cost
The physical size of your furnace is measured in British Thermal Units (BTUs). A professional HVAC contractor will perform a Manual J load calculation to determine the exact size your home needs. We will match you with an ideal furnace that will fit perfectly in the home. Heaters that are too small will run too often, causing your bill to skyrocket. Heaters that are too large will short cycle on and off, causing wear and tear along with energy spikes.
This isn’t something that takes us long at all, especially if you’ve already had a furnace and have your ductwork in place. We install a lot of furnaces, and we’re very familiar with homes in the area. The idea here is to fit you with a furnace that will provide comfort for the home with minimal effort. This is another aspect of a new furnace that’s going to help keep those monthly bills lower.
5. Labor and Installation Complexity
Labor typically accounts for 30% to 50% of your total installation costs. We cannot give you a concrete number on how long it will take, as homes vary in size and complexity. However, it’s very typical to complete the job in a single day, in four to eight hours. It also depends on how smoothly the installation goes.
Additionally, if your furnace is located in a hard-to-reach area like a tight crawl space or a steep attic, the installation may take longer. We inspect everything well beforehand, so we will let you know what we have to do and how long it should take.
6. Ductwork Repairs and Modifications
The most expensive furnace on the market isn’t going to work unless you have quality ductwork in the home. You need an airtight series of ducts that will carry conditioned air to your living spaces. You may need a few modifications for a new furnace, so be aware of that. Fortunately, this shouldn’t cost too much. Look for a range of $500 to $2,000 for any ductwork modifications that need completed.
Of course, this isn’t a guaranteed cost. The odds are pretty good that your ductwork is fine in your home. We can run a test to see how well your ducts are performing. More often than not, a few gaps need to be sealed, and you’re good to go with very limited extra expenses.
7. Stacking Rebates and Incentives in 2025
One of the best ways to offset the cost of a new furnace is to take advantage of available rebates and tax credits. The federal Energy Efficient Home Improvement Credit allows homeowners to claim up to 30% of the cost of a qualifying high-efficiency furnace. This can save you some serious money if you qualify.
You should definitely look around for various rebates before you get a new furnace. You might find some great tax incentives or deals on specific models that the government favors. This is how many people get complete solar panel rigs and electric vehicles for a fraction of the cost.
Professional Heating Solutions in St. Louis
At Scott-Lee Heating Company, we know how rising fuel costs can affect entire families in our community. Large upfront expenses might seem like a bad way to save money, but it’s about heating your home for years and years. As your new, efficient furnace goes to work, you save money month after month. This investment pays for itself before you know it. We’re proud to be your go-to source for installing a new furnace. Beyond furnace replacement, our team is proud to offer a wide range of services to keep your home comfortable throughout the year.
For the right furnace option in St. Louis, contact Scott-Lee Heating Company today for more information.