• Best Furnace 2021

The Best Furnace 2021

Here at bestfurnace.web.app, our goal is to make it easier for home owners to research, understand, and select the right heating systems for their homes. Every year, we look into the best furnaces from all the major brands to evaluate and compare them, so you don’t have to.

We base our evaluations on criteria such as pricing, features, warranties, and efficiency ratings & ENERGY STAR® models to find the stand-out models from customer favourite manufacturers.

In this guide, we’ll give you an in-depth comparison of the best furnaces on the market today in these categories so you can easily decide for yourself which make, model, and brand is right for your family’s comfort.

Furnace Buying Guide

How do many people go about buying a furnace? First, they call contractors and ask for estimates. To prepare this report, we do too. More than 500 professionals in residential heating and air conditioning told us about their encounters in installing and keeping heating equipment.

Size Matters
The furnace's specifications should fit your needs. A furnace that's too small won't keep your house comfortable during extremely-cold weather.

Partly to avoid that possibility, the furnaces in most homes are larger than necessary. Initial cost is actually one of the drawbacks of that strategy. A furnace that's too large will cycle on and off more frequently. That puts more put on on its parts, wastes energy, and might cause the heat to vary uncomfortably. Also, a larger replacement furnace might require bigger ducts. Without the right size ducts, airflow can be noisy.

To make sure of correct sizing and a proper installation, choose a reputable contractor who will take the time to calculate your heating requirements according to an industry standard such as in "Manual J HVAC Residential Load Calculation" of the Air Conditioning Contractors of America. Such calculations take into account the climate and the size, design, and building of your house. Once the furnace is installed, maintain it regularly according to the manufacturer's recommendations. Our survey helped to confirm this advice. When we asked about the most common reasons for service calls for furnaces, contractors cited human error, inadequate maintenance, for example, or improper set up, twice as often as defective gear. Read our frequency of repair report for which brands or the most and least reliable.

Efficiency Also Matters
Gas is currently the most common heating fuel and most new central-heating systems use gas. How effectively a furnace converts gas into heating energy is usually reflected in its total annual fuel-utilization-efficiency (AFUE) rating, which is usually measured as a percentage. The higher the number, the more warmth the furnace can wring from each therm of gas. Since effective furnaces generate fewer emissions, environmental considerations might also influence your decision.

Furnaces have become more energy-efficient over the years. A gas furnace made in the early 1970s typically has an AFUE of about 65 percent. The lowest efficiency allowed by law for fresh gas furnaces is 78 percent, and some new models achieve 97 percent, near-total efficiency.

The price of a furnace generally rises in step with its fuel efficiency. A furnace with a 90 percent AFUE might cost $1,000 more than an identical size unit with an 80 percent AFUE. But you can often recoup that additional cost through lower fuel bills over the life of the furnace, especially in regions such as the Northeast and Midwest, where winters can be harsh. How quickly you recover the expense depends on more than simply AFUE. The electric power to run furnaces with diverse AFUEs can vary significantly. The climate where you live, how well your home is insulated, and your local gas and electric power rates also affect payback times.

As you decide, insist that the contractor select versions in a range of efficiencies and calculate the total annual estimated operating cost of each model you're considering, rather than just estimating it. The contractor can total those calculations by plugging info on each unit's AFUE and electrical consumption, local utility rates, and features of your home into one of several computer programs designed to very easily calculate estimates. Make sure that the quotes also include the price of any adjustments to venting required by any appliances in the home.

Additional questions to ask the contractor: Is the model you're considering fairly fresh, introduced, say, two years ago or much less, and therefore relatively untested? Whether it's an older style, has the contractor seen any reliability issues with it?

You can make your house more energy-efficient in a number of ways. Ignore the thermostat in winter months; only two degrees cooler can save you cash and decrease emissions by about 6 percent. You will possibly not even come to feel the difference, especially during the night or when you're from the house-a programmable thermostat might help here. Pull the curtains during the night to block the chill from a frosty window. Keep the home windows protected on sunny days through the summertime, and uncover them on sunny times through the winter to reap the benefits of some free solar heating system. Reduce heat reduction from ducts by sealing leakages and, where feasible, insulating ducts.

Repair or Replace?
If your gas furnace falters or fails, a couple of simple procedures might save you the price and trouble of searching for professional help:
• If you're having low airflow, check the air conditioning filter on the furnace; a clogged filtration system could lower airflow to a trickle.
• See if there will be loose cables or a malfunction found in the thermostat. For an electric thermostat that works on electric batteries, try changing them.
• Will be fuses burned out or circuit breakers tripped? If so, power might have been cut to the supporter or circuit board.

If those steps don't operate, call a heating contractor. Regardless of the improved efficiency of all innovative furnaces, it's generally considerably more cost-effective to correct a furnace than to displace it. However, if an essential component including the blower motor or control module fails, you're likely better off changing the furnace, particularly if the machine is a lot more than about 15 years old. Furnaces commonly last typically 15 to twenty years.

When you have to replace your furnace, you will be pleased to hear that today's gas furnaces are more energy conserving, leading to substantial fuel savings. Normally, around 25 % of gas furnaces will probably encounter a break by the finish of the tenth season of ownership. This, on the other hand, varies considerably by company. That's what we found predicated on data from our members, inside our latest surveys, who reported on the activities with 48,318 gas furnaces installed innovative between 2003 and 2019.

Of the 24 gas furnace makes we rated, Payne certainly is the virtually all reliable, earning a fantastic rating for predicted dependability. Six other makes earn Very Good rankings including American Common, Bryant, Carrier, Rheem, Rudd, and Trane. Because of their Poor reliability rankings, Consumer Reports cannot suggest gas furnaces from Coleman, Frigidaire, Luxaire, Maytag, White-Westinghouse, or York, at the moment. The rest of the 11 brands all get a reliability rating of Great.

Gas Furnace Features

Each make of furnace offers an identical selection of key features, based on price. The furnace features frequently highlighted in item literature and product sales pitches are usually the kinds on the higher-efficiency types, however, many manufacturers also present them on premium editions of low-efficiency furnaces.

Variable-Speed Blowers

These can deliver surroundings slower, while often building less sound, when less high temperature is needed. That creates fewer drafts and unpleasant swings in temperature.

Variable Heat Output

On some furnaces which may have a variable-acceleration blower, this feature may increase efficiency and comfort by automatically different the amount of high temperature the furnace delivers, usually between several levels. The furnace can as a result deliver heat more continually than could one with a set heat output.

Air Filtration

Fitting a furnace with a great electrostatic filter, which in turn uses a power charge to greatly help trap particles, or perhaps a high-productivity particulate-arresting (HEPA) filter can easily decrease the amount of dust particles blown through the heat. That might help persons with asthma or various other chronic lung disorders, but there's little facts that other persons need such filtration.

Dual Heat Exchanger

Heat exchangers will be the elements that draw high temperature from the burned gas. To draw more high temperature from the surroundings they burn, energy-useful furnaces supplement the principal exchanger with another exchanger. As the exhaust gases for the reason that second exchanger might yield a corrosive acidic condensate, the next exchanger is made from stainless, lined with plastic material, or otherwise protected.

Ignition System

Fewer furnaces include a pilot light-a good flame that burns continuously, awaiting another control to ignite the burners. Furnaces with intermittent, immediate spark, or hot-surface area ignition get rid of the regular pilot light in a variety of ways. That increases productivity and is normally reflected in a furnace's higher AFUE ranking.

Zoned Heating

This feature runs on the number of thermostats, a superior central controller, and a number of dampers that control airflow to provide different levels of heating or cooling to various areas of the house. The larger the house, generally, the more beneficial zoning is. That's particularly true if sections of the house have different heating system or cooling requirements, due to wide variants in the quantity or kind of windows, for instance. But contractors we interviewed stated that furnaces linked to zoned ductwork generally need more repair.


Standard, usually low efficiency, furnaces frequently have a shorter guarantee than their high grade counterparts.

Best Furnace Brands

When checking the best electric furnace or best oil furnace brands, most homeowners expect to see big reliable brand names such as Lennox, Carrier, and Trane. These big brands primary focus is the most popular type of furnace: the gas ones. When talking with your installer about gas furnaces, you can rest assured that you’ll already know all of the big brands with the longest tradition and best reliability scores.


The Better Business Bureau (BBB) has given Trane a B rating and its customers have reviewed how truly efficient this furnace is. 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.


The Better Business Bureau (BBB) has given Lennox an A+ rating and Lennox reviews have given this system 4.5/5 stars. This is one of the quietest oil furnaces on the market with so many features that help reduce noise.


Goodman furnaces are another of the top furnace brands on this list that isn't quite as revered as Trane or Carrier. However, the Goodman brand's products have a solid build quality, Goodman offering great warranty programs you can count on. Goodman furnaces are a real value overall for those who have a budget to consider for a new HVAC system.


Consumer Reports rates Carrier brand as one of the top furnace brands, and most HVAC technicians stand behind Carrier confidently because of the long-lasting products and solid furnace warranties available.


Rheem was founded in 1930, and although it's best-known for producing boilers and hot water heating equipment, it also offers top-quality heating and cooling units today. Rheem is the owner of the Ruud brand and manufactures products under that well-known name, too. All Rheem furnaces and other Ruud HVAC units come with comprehensive warranties.


HEIL gas furnaces have three series to choose from offering more advanced features, energy efficiency levels (AFUE), and price points from cheaper budget friendly models to high quality furnace home heating units. HEIL offers the Performance series, Quiet Comfort Deluxe, and the Ion series furnace.


These brands didn’t make our list in 2018. There were too many mechanical issues. However, these identical furnace brands have upgraded quality along with efficiency. Value is good too.


Maytag is the best-known brand offered by Nortek Global, a worldwide HVAC company. Identical brands are Nu-Tone, Broan and Frigidaire. Recently, Nortek Global retired Westinghouse, Nordyne and Tappan, which were also identical brands.