7 Things to Be Aware of Before Purchasing a Furnace in Nashville

Purchasing a new furnace may not be a concern in the immediate future. But it’s smart to learn the things that will likely influence your selection when you’re ready to buy. Here are seven things you’ll want to consider when you're due for furnace replacement in Nashville.

1. Size and Installation Quality

To run at peak efficiency and comfort, your furnace must be properly sized for your home. When it comes to furnaces, bigger is definitely not better. We often get requests from customers to purchase a big furnace in the mistaken belief that a larger furnace is either more reliable or will offer better comfort.

The reverse is true. Large furnaces will short cycle, or constantly turn on and off. This leaves you uncomfortable, with more expensive energy bills and a furnace that could need replacing much sooner.

This is why it’s important to work with the right company when buying a new furnace. Even if it’s the correct size but improperly installed, the U.S. Department of Energy says you could forfeit as much as 30% of your energy efficiency.

Another crucial component of installation is ductwork. If yours is old or improperly designed, you might have problems with noise or comfort. A furnace is only as effective as the duct system it’s attached to.

At Donelson Air Service Experts, our Expert HVAC technicians are ACE certified, which means they’re knowledgeable about repairing and installing various types of home comfort systems. In addition to technical skill, our technicians are also trained in treating you ethically. We also stand behind our work with a 100% satisfaction guarantee for a year.*

2. Energy Efficiency

Furnaces are ranked by a term known as AFUE, or annual fuel utilization efficiency. Like miles per gallon on cars, this measures the annual gas consumption of a furnace. The greater the number, the less gas is spent during the heating process.

If your present furnace is 15 years old, it’s likely ranked well below 80 AFUE. As an example, if your HVAC system is 70 AFUE, you’re throwing away up to 30 cents of each dollar you spend on heating.

Here’s how AFUE ratings work today:

  • 80 AFUE—minimum efficiency rating in the U.S. and Canada.
  • 90 AFUE—ENERGY STAR® rating for furnaces in the U.S. South.
  • 95 AFUE—ENERGY STAR® rating for furnaces in the U.S. North and Canada.
  • 98 AFUE—best efficiency rating available.

3. Blower Motor Technology

As you evaluate new furnaces there is one more important consideration: blower technology. This part moves air throughout your home. And it also uses a lot of electricity, so it’s important to be familiar with your options.

There are three kinds of blowers available on furnaces today. They include:

  • Standard blower motor. Furnaces that aren’t ENERGY STAR rated have a standard blower motor that’s been mostly the same for the past 30 years. This motor is the least costly and also the least energy efficient.
  • Constant torque motor. This technology strikes a balance between price and energy efficiency. It provides an electrical efficiency boost over a standard motor design.
  • Variable-speed motor. The most energy-efficient furnaces can run at different speeds. Instead of running at full blast 24/7, they will quietly run at a low or medium speed at times. This helps enhance your comfort while keeping energy costs low, both in the winter and summer. And it also keeps indoor humidity under control.

4. Sound Reduction Technology

Sound has become a very significant consideration with furnace installation, so another great improvement has been noise management. Some of these features include:

  • Sealed and insulated cabinets
  • Variable-speed blower technology
  • Nearly silent gas burners

With this technology, you might not even notice that your furnace is running.

5. Smart Thermostat

You probably have a programmable thermostat, but chances are you probably aren’t making the most of your energy savings. These thermostats can be challenging to program, especially if your schedule changes from day to day.

A smart thermostat eliminates all the guesswork about energy efficiency. Many models can pick up on your temperature preferences and then produce an energy-saving schedule to match. They also recognize when you’re home or away and will adjust your heating and cooling as necessary.

As an extra perk, you’ll also be able to monitor and change your settings from just about anywhere on your phone. Some models can even alert you if they detect a problem with your furnace or remind you when it’s time to replace your air filter.

6. Warranty

There’s a major difference in furnace quality and reliability. Like any big purchase, we think it’s best to go with a major brand name. With a top brand like Lennox® or Goodman®, you’ll have more assurance in the technology and that the manufacturer will uphold its product warranty over the long haul.

Furnaces typically have two primary warranty coverage areas:

  • Heat exchanger. This is the heart of the furnace and the most expensive component to replace. This part typically has a 20-year limited warranty or lifetime limited warranty, but this can vary based on the manufacturer and furnace model.
  • Main components. This includes the blower motor, electronic controls, ignitors and other important parts. Warranties can range from as little as a one-year limited warranty to as long as a 10-year limited warranty.

When reviewing warranty coverage, it’s important to know it's limited. So, you should make sure you get the restrictions. For example, nearly all standard manufacturer warranties only cover the price of the replacement part, not labor. And labor on a new heat exchanger could get costly.

Once your new furnace is running, make sure you complete the product registration right away. Many manufacturers may limit the warranty term if the product registration is not completed. This step is simple and usually only takes a few minutes.

7. Cost

How much does all this cost anyhow? It could range from $1,700 for a basic furnace, or $5,500 or more for a high-efficiency model.

As you think about these costs and the affect on your budget, remember that unlike nearly every other appliance you may need to buy, your new furnace may help pay for itself from the monthly energy savings it provides.

A couple of other ways to save include:

  • Getting a new air conditioner at the same time.
  • Purchasing at the right time, such as in early fall, mid-winter and early spring. You may be able to get extra discounts and rebates during this slower season.
  • Take advantage of rebates from the federal and state government, as well as from your local utility company. We can help you navigate this process.
  • Finance your new furnace or enroll in our exclusive HVAC Advantage Program™. For just one low monthly fee, you’ll receive a new furnace with repairs and maintenance included.*

How Do I Know When to Replace My Furnace?

Now that you know what to search for in a new furnace, when should you replace your old one? Here are a few ideas from our Experts that will help you decide.

Age

Heating systems typically last 15–20 years. How long yours will keep going depends on whether you’ve done furnace maintenance, where you live and your desired temperature. If you’re somewhere with harsh winters, your furnace will run more often, potentially making it wear out sooner. The same applies if you like to keep your home at a hotter temperature.

Repair Frequency and Cost

Just like any appliance, as furnaces age, the potential for frequent furnace repair increases. If your system is more than 15 years old, those repairs can be especially expensive. Common and costly repairs on an older furnace include:

  • Blower motor failures
  • Ignition control failures
  • Heat exchanger failures

If repairs are greater than the half the price of a new furnace, it’s generally recommended to replace it.

Energy Efficiency

Furnaces older than 15 years can be extremely inefficient. You could be wasting as much as 30% of the money you spend to heat your home. Excessive energy costs and the desire to reduce energy use are also strong reasons to consider replacing your furnace. In fact, an independent study by Decision Analyst shows nearly 20% of homeowners who recently replaced their furnace specifically did so to lower their utility bills.

Trust Your Furnace Replacement to the Experts

It can feel intimidating trying to investigate furnace features on your own. Or know exactly when you should replace your furnace. Our Donelson Air Service Experts Experts are here to make the process much more convenient. Contact us at 615-953-9885 or schedule an appointment online to request your free home comfort assessment now.


*For HVAC Service Memberships, certain warranty exclusions and limitations apply. See your signed agreement for full terms and conditions. For the Advantage Program™, please see your signed Advantage Program Agreement for full details and exclusions. Lease with approved credit; visit ServiceExperts.com for details.