On average, a furnace lasts around 20 years. You might go a long time as a homeowner without needing to purchase a furnace, so shopping for one when the time comes can feel overwhelming. Like with any major purchase, doing your research beforehand is critical. Before you buy a new furnace, you should understand your options and what to look for in a quality system. Here are four tips for first-time furnace buyers: 
Know the three types of furnaces
The three main types of furnaces are single-stage, two-stage, and modulating systems. A single-stage is the traditional type of furnace with one “on” setting and one “off” setting. It turns on until your home reaches your desired temperature, and then it shuts off until the temperature drops out of range again.
A two-stage furnace uses a smaller flame for milder temperatures and a more significant flame for colder temperatures. It tends to run for longer cycles instead of frequently turning on and off, and it can keep your home at a precisely controlled temperature. A modulating system can adjust the size of the flame in small increments, so it offers the most steady and consistent heating.
Furnace Installation: Prioritize Efficiency
Modern furnaces are much more energy-efficient than older furnaces. High-efficiency systems may be more expensive up-front, but they will save you hundreds or thousands of dollars over time on your heating bill.
Investing in a high-efficiency furnace is well worth the cost. Look for a furnace with an efficiency rating of 95 percent or with an Energy Star certification. Many high-efficiency furnaces even offer rebates from the manufacturer or your state or local government.
Consider Upgrading the other HVAC Components
If your furnace needs replacing, the other components of your HVAC system may need upgrades as well. The accessories to your furnace, such as the ductwork and vents, need to be in good working condition if you want to maximize the system’s efficiency.
When you schedule your furnace installation, you could also ask your technician to inspect the other components of the system. They may recommend replacing the ductwork around the furnace so that it fits the new unit properly. Your HVAC technician can check the vents and the chimney for wear and tear, too.
Find a Great Furnace Installation Expert
The highest-rated furnace on the market won’t be suitable for your home if it isn’t installed correctly. Your furnace installation heavily influences the efficiency and consistency of your HVAC system. Mistakes during the installation could also lead to costly repairs in the future.
You should research and interview a few furnace installation technicians in your area to find the best provider. Request references from past clients and asks if they have a NATE certification or other qualifications. When you find a furnace installation company you trust, you’ll have peace of mind knowing you can consult them if you run into any issues with the system.
Buying a new furnace can be stressful, but understanding your options will help you narrow down your search. If you have any questions or concerns about your furnace installation, reach out to an HVAC expert you trust.