Best Furnaces of 2021 (2023)

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Choosing the right furnace is crucial to keeping your home comfortable, even on the coldest days. You want your furnace to fit your budget, while also being efficient and reliable. We have broken down the top furnace models of 2021 for you. This guide will also explain what you need to consider when comparing furnace systems and furnace reviews.

Skip the search and connect with an HVAC expert.

Best furnace brands

  • Trane – Best for Quality
  • Lennox – Best for Efficiency
  • Goodman – Best Value
  • Rheem – Best Warranty
  • Bryant – Best for Reliability
Best Furnaces of 2021 (1)

The 5 best furnaces of 2021

Read below for the best gas furnace reviews and all the important details of each product.

1. Trane

Trane Furnaces

TheBETTER BUSINESS BUREAUhas given Trane a B rating and its customers have reviewed how truly efficient this furnace is.

Best Furnaces of 2021 (2)


$2,550 unit only / $4,200 with installation

Sound Rating

8/10 thanks to the insulated cabinet for quiet operation


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Up to 97.3% AFUE and certain models are ENERGY STAR qualified

  • Pros: It’s hard to find a more energy-efficient furnace available, and if you choose the Optimal Extended Warranty from Trane, you will truly be satisfied and long-time customer.
  • Cons: As this is one of the best furnaces available from Trane, you will be paying more than you would for the average furnace.
  • Type of furnace: Gas
  • Advanced features:
    • ComfortLink™ II communicating capability that enables your system to automatically charge, configure and calibrate
    • Variable-speed blower motor that results in even, comfortable heating
    • Heavy gauge, two-tone powder-painted cabinet
    • Increased dehumidification with Comfort-R™
  • Warranties: With Trane, you have a choice of three different warranties, depending on how much you want to pay and how much coverage you desire: Based Limited Warranty, Registered Limited Warranty and Optimal Extended Warranty.

Explore Trane furnaces

2. Lennox

  • Pros: This is one of the quietest oil furnaces on the market with so many features that help reduce noise.
  • Cons: As expected since it’s an oil furnace, this is not the most energy-efficient option out there; if you’re looking for efficiency, you probably want to choose a gas furnace.
  • Type of furnace: Oil
  • Advanced features:
    • Its sleek design allows the system to fit in most closets, crawlspaces or basements
    • Has features, including combustion chamber, heavy-duty fuel pump and insulated blower compartment, designed to reduce noise
    • Reliable features, including Beckett AFG burner and a PSC blower motor
  • Warranties: Comes with a Limited Lifetime Warranty on the heat exchanger and 5-Year Limited Warranty on covered parts.

Explore Lennox furnaces

Skip the search and connect with an HVAC expert.

3. Goodman

Goodman Furnaces

The Better Business Bureau has given Goodman an A+ rating and Goodman furnace reviews from its customers have given this system 4.8/5 stars.

Best Furnaces of 2021 (4)

(Video) ✅Top 5 Best furnaces reviews | Best furnace brands | consumer reports furnaces | Your Best Deal


$2,210 unit only / $3,100 with installation

Sound Rating

9/10, thanks to its variable-speed induced draft blower


Up to 98% AFUE

  • Pros: Goodman is known for its more affordable pricing, yet still delivers incredible efficiency, so you save money upfront and in the long run.
  • Cons: While this system is sturdy and reliable, other brands mentioned on this list are more well-known for their quality.
  • Type of furnace: Gas
  • Advanced features:
    • Integrated communicating ComfortBridge™ Technology
    • Commissioning and diagnostics via onboard Bluetooth
    • Heavy-duty aluminized-steel tubular heat exchanger
    • Stainless-steel secondary heat exchanger
    • Self-calibrating modulating gas valve auto-configured for each installation
  • Warranties: The heat exchangers comes with a Lifetime Limited Warranty and a 10-Year Limited Parts Warranty on all functional parts.

Explore Goodman furnaces

4. Rheem


$1,532 unit only

Sound Rating

9/10, thanks to its heat exchanger design that helps reduce operating sound by 20%


(Video) How to Select The Best Furnace For Your Home | Lennox Furnace Options

Up to 92% AFUE

  • Pros: This furnace is recognized for its easy installation and maintenance, saving you in the short and long-term on installation and repair costs.
  • Cons: While up to 92% AFUE performance is impressive, there are much more energy-efficient furnaces from both Rheem and other brands mentioned.
  • Type of furnace: Gas
  • Advanced features:
    • PlusOne™ Diagnostics 7-Segment LED all units
    • PlusOne™ Ignition System – DSI for reliability and longevity
    • PlusOne™ Water Management System with patented Blocked Drain
    • Sensor
    • Heat exchanger is removable for improved serviceability
  • Warranties: Conditional parts come with a 10-year warranty and the heat exchanges comes with a 20-year warranty.

Explore Rheem furnaces

5. Bryant

Bryant Furnaces

The Better Business Bureau has given Bryant an A+ rating and Bryant furnace reviews have recognized how quiet the system is.

Best Furnaces of 2021 (6)


$1,650-$2,145 (varies based on capacity)

Sound Rating

9/10 thanks to its quieting flue silencer baffles


Up to 85.7% AFUE

  • Pros: This system is not only recognized for its quiet sound, but also for its clean-burning and variable speed performance, which provides you reliable comfort in the cold.
  • Cons: Again, due to it being an oil furnace, this is not an incredibly energy-efficient furnace; for most efficiency, choose a gas furnace.
  • Type of furnace: Oil
  • Advanced features:
    • Variable-speed blower
    • High-performance Riello burner
    • Barometric draft control
    • Durable aluminized steel secondary heat exchanger
  • Warranties: 10-year parts and a lifetime heat exchanger limited warranty

Skip the search and connect with an HVAC expert.

Explore Bryant furnaces

Furnace Cost Calculator

Trying to figure out how much your furnace replacement should cost? Try out our Cost Calculator and get a price estimate that you can compare to quotes technicians give you.

How Much Does HVAC Replacement Cost?

Average Cost: $3,250 – $12,586

Like your home and needs, your HVAC project cost will be unique. Use the calculator to better estimate your investment.

*Estimate is based on current data and does not represent a guaranteed price. For accurate pricing contact a local HVAC dealer.

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$5,000 – $6,000

Estimated Total

The average cost for a new HVAC system is $3,250 to $12,550, which includes equipment and labor fees for the installation of a central AC unit and gas furnace. The chosen HVAC brand, necessary ductwork repair, and your location will influence the project cost.

What makes a top-rated furnace?

There are many factors to consider when reading oil or gas furnace reviews and deciding which system is right for you. First, you need to know which kind of furnace you’re looking for. When comparing furnace reviews, you should consider a variety of factors like gas type, efficiency, cost, warranty and more.

Oil vs. Natural Gas

An oil furnace generates heat using oil while gas furnaces are fueled by natural gas/propane. Oil furnaces are typically priced lower and provide more heat per BTU, but are less efficient. Gas furnaces are typically more efficient and offer lower fuel costs, but are more expensive than oil furnaces up-front.

Single-Stage vs. Two-Stage Heating

Single-stage heating uses a fixed gas valve and a one-speed motor to provide a single heat setting. Two-stage heating, on the other hand, uses a two-stage gas valve and a variable-speed motor, allowing for multiple heat settings you can adjust depending on the weather.

Energy efficiency

Modern furnaces are becoming increasingly energy efficient, which makes them better for the environment and can reduce utility costs. Most new furnaces display an Annual Fuel Utilization Efficiency (AFUE) rating, which is a measure of fuel efficiency. Furnaces with higher AFUE ratings typically cost more, but they can reduce the overall cost of heating your home.


The total price of a new furnace depends on the brand, efficiency and installation costs. Additionally, gas typically costs much less than electricity. However, gas furnaces are generally more expensive to fix than electric furnaces.


Most furnace manufacturers offer a warranty on their products. The two most common types of warranties are for the heat exchanger and for certain parts of the furnace. Warranties vary based on the price and quality of the furnace. For example, many basic furnaces include a five-year parts warranty, while top-of-the-line furnaces often have a 10-year parts warranty. Most manufacturers only honor the warranty for the individual who owned the home at the time the furnace was installed, and customers must typically register the product within a certain period of time to qualify for full warranty coverage.

Advanced features

Some furnaces have advanced features such as an air pressure switch, variable-speed motor, air filtration system and electronic ignition. These advanced features can reduce noise, trap dust particles and increase efficiency. Furnaces may also have smart features that improve efficiency by automatically adjusting the output to the exact amount of air needed.

Skip the search and connect with an HVAC expert.

Customer reviews

Reading customer reviews can help you choose the best furnace for your home. Find reviewers who live in a home of a similar size and in a similar climate to yours. Reviews can help you understand a furnace’s heat output, how quickly the furnace heats the home and how the furnace performs in various temperatures. Reviews may also provide information about the furnace’s reliability, common problems and typical repair costs.

Frequently asked questions

What are the best furnaces?

There are many furnaces on the market today, and the best option for you depends on your unique needs and lifestyle. Some furnaces are more expensive to install but can reduce long-term costs. Many new furnaces have advanced features that optimize efficiency and heat output. Choosing a furnace with warranty options can save you money on repairs and replacement parts.

What is the most reliable furnace brand?

No one furnace brand is more reliable than the rest. To make sure your furnace lasts, choose a product that is appropriate for your home. Clean the filter, check the blower motor and clear the vents regularly to ensure your furnace remains in good working condition. You can also choose a furnace manufacturer that offers a warranty, in case a part needs to be fixed.

(Video) Best Gas Furnace 2022 | Latest Reviews of Top 10 Best Gas Furnaces
Which furnace brand is best?

On this list, we evaluated some of the most reputable furnace brands. When shopping for a new furnace, evaluate multiple companies to find the product that best fits your needs and budget.


Which brand of furnace is most reliable? ›

The best furnace brands will provide more reliable performance over time and help you save on energy bills while keeping your house warm.
Best Furnace Brands
  • Daikin Furnaces.
  • Goodman Gas Furnaces.
  • Lennox Furnace Units.
  • Rheem Furnaces.
  • Ruud Furnace Units.
  • Trane Gas Furnaces.
  • York Furnace Units.
  • HEIL Gas Furnaces.

What is the most efficient furnaces for homes? ›

The most efficient Furnace you can buy is a 98% modulating variable speed furnace. Almost every manufacturer has a variation of this type of furnace. With that said this is one of the most expensive to buy and install. Also, not every home can have this style of furnace due to various factors like duct system design.

How many square feet will a 80000 BTU furnace heat? ›

Furnace and Air Conditioner size for a Detached 2-story House
Detached House square footage *Furnace Output [BTU/hr]
2500 to 3500 sq ftup to 65,000 BTU/hrup to 80,000 BTU/hr
3500 to 4500 sq ftup to 80,000 BTU/hrup to 100,000 BTU/hr
*The above square footages do not include the area of the basement
4 more rows

How many square feet will a 60000 BTU furnace heat? ›

How Many Square Feet Will 30,000 – 120,000 BTU Furnace Heat?
Furnace CapacitySquare Footage(Hot Climate)Square Footage(Moderate Climate)
45,000 BTU1,500 sq ft1,000 sq ft
50,000 BTU1,650 sq ft1,100 sq ft
60,000 BTU2,000 sq ft1,320 sq ft
70,000 BTU2,320 sq ft1,550 sq ft
6 more rows
25 Apr 2022

What is the number one rated furnace? ›

1. Lennox. Known for: Lennox furnaces offer a wide range of options, including noise-reducing features with variable blower motors. Editors' Choice: With SilentComfort Technology, this Lennox SLP99V variable-speed gas furnace (available at Lennox) can operate quietly while running at up to 98.7 percent efficiency.

Which is the most thermally efficient furnace? ›

Which is the most thermally efficient furnace?
  • A. Reheating furnace.
  • Reverberatory furnace.
  • Rotary kilns.
  • Boiler furnace.

Which furnace lasts the longest? ›

In general, oil-fueled furnaces have the longest life expectancy, and gas-fired furnaces have the shortest.

Are high efficiency furnaces worth the extra money? ›

The greatest advantage of high-efficiency furnaces is that they can save you quite a lot on your energy bill. Heating and cooling typically account for more than half of the energy used in your home. A more efficient furnace can definitely make a difference.

What furnace lasts the longest? ›

In general, oil-fueled furnaces have the longest life expectancy, and gas-fired furnaces have the shortest.

Which furnace is better Trane or American Standard? ›

That's right, there is no difference between Trane and American Standard, they're exactly the same product! The only exception to that statement is the condensing unit top that comes on a few of the high-efficiency condenser models. Under the Trane name, these models are equipped with the DuraTuff aka All Weather top.

Which brand is better Trane or Carrier? ›

There is no difference in terms of basic and mid-level units of both the brands when it comes to deciding the superiority in terms of quality. However, if you are looking forward to buying a top-line model, then you must go with Trane as it has a better warranty on their compressors.

Is Trane the best furnace? ›

Trane furnaces are often considered some of the best on the market in terms of durability, reliability, and customer satisfaction. They do require an investment, but most homeowners are happy with their Trane furnaces year after year. As such, Trane is one of the most popular furnace brands in Canada.


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