What is the typical purchasing process for a furnace? They first make calls to contractors and get quotes. We also worked to compile this report. More than 500 experts in home heating and air conditioning shared their knowledge with us regarding the setup and upkeep of heating equipment.

Size Counts

The Furnace Langley should be designed to meet your needs. In really cold weather, a furnace that is too tiny won’t keep your home cozy.

The furnaces in most homes are larger than necessary, in part to prevent that scenario. One disadvantage of that approach is its initial expense. A large furnace will turn on and off more frequently. This increases the wear and tear on its parts, consumes energy, and could result in uncomfortable temperature fluctuations. A bigger replacement furnace can also need for bigger ducting. Airflow can be noisy if the ducts are the wrong size.

Choose a trustworthy contractor who will take the time to calculate your heating needs in accordance with an industry-standard, such as the Manual J HVAC residential load calculation from the Air Conditioning Contractors of America, to ensure proper sizing and installation. These calculations take into account your home’s size, design, and structure as well as the climate. After installation, do routine maintenance on the furnace in accordance with the manufacturer’s instructions. Our survey supported this recommendation. Contractors cited human error, insufficient maintenance, or faulty installation twice as frequently as damaged equipment when we inquired about the most frequent causes of service calls for furnaces. See our complete analysis of the best and worst gas furnace brand names.

Efficiency Is Important

Gas, the most popular heating fuel, is used in the majority of new central heating systems. The annual fuel-utilization-efficiency (AFUE) rating of a furnace, which is expressed as a percentage, reveals how effectively it transforms gas into heating energy. The furnace can produce more heat from each therm of gas when the number is higher. Environmental factors may also affect your decision because efficient furnaces produce fewer emissions.

Over time, furnaces have improved in energy efficiency. An early 1970s gas furnace typically has an AFUE rating of around 65%. The legal minimum efficiency for brand-new gas furnaces is 78 percent, although some recent models reach 97 percent efficiency, which is almost total.

A furnace’s cost often increases along with its fuel efficiency. A furnace with a 90% AFUE rating could cost $1,000 more than a furnace of comparable size with an 80% rating. However, especially in areas like the Northeast and Midwest where winters can be harsh, you can frequently recoup that additional expense through lower fuel bills over the course of the furnace. AFUE is only one factor that influences how quickly you recoup your investment. The amount of electricity needed to run furnaces with various AFUE ratings might fluctuate greatly. Payback timeframes are also influenced by your local climate, how well-insulated your house is, and the cost of gas and electricity in your area.

As you make your choice, demand that the contractor choose models with a variety of efficiencies. Then, using one of the many computer programs designed to make easy calculations of estimates, plug the AFUE rating and electrical consumption of each unit, the local utility rates, and the characteristics of your home into the program to determine the annual estimated operating cost of each model you’re considering. Verify that the prices also cover the cost of any venting modifications that your home’s appliances may require.

Other queries to put to the contractor include: Is the model you’re thinking of somewhat new—say, just two years old—and hence less thoroughly tried? Has the contractor observed any dependability issues with it if it’s an older model?

There are various strategies to increase the energy efficiency of your home. Reduce the temperature in the winter by just 2 degrees Fahrenheit to save money and cut emissions by around 6%. A programmable or smart thermostat can help with this, and you should read our guides on using smart devices and smart thermostats so that you aren’t spending money heating your entire home when some rooms are empty. However, you might not even notice the difference, especially at night or when you’re away from home. To avoid the nighttime chill from a frigid window, draw the curtains.

More conventional wisdom: To take advantage of free solar heating, keep the windows open on sunny days in the winter and cover them on sunny days in the summer. By plugging leaks and, where practical, insulating ducts, you can lessen heat loss from ducts.

Fix or swap out?

If your gas furnace malfunctions or breaks down, following a few easy steps could save you the money and hassle of hiring a professional.

• If your furnace’s air filter is clogged, airflow may be reduced to a trickle and cause poor airflow.
• Check to see if the thermostat is malfunctioning or if any connections are loose. Change the batteries in an electronic thermostat if necessary.
• Are circuit breakers tripped or are fuses burned out? If so, the fan or circuit board may not have had electricity.

Call a heater contractor if those measures don’t work. Despite the fact that most new furnaces are more efficient, it is usually less expensive to repair a furnace than to replace it. However, you’re usually better off replacing the furnace if a crucial component, such as the heat exchanger or control module, malfunctions, especially if the appliance is older than around 15 years. The typical lifespan of a furnace is 15 to 20 years.

Most and least trustworthy

You’ll be glad to know that modern gas furnaces are more fuel-efficient, resulting in significant fuel savings, if you need to replace your furnace. By the conclusion of the tenth year of ownership, almost a quarter of gas furnaces are likely to encounter a break. However, this varies greatly between brands. That is what we discovered using data from our members. They discussed their experiences with 36,348 newly installed gas furnaces between 2005 and 2021 in our most recent polls.