Where you aware that more than 50% of your home’s energy costs are needed for your heating and cooling? That’s why it’s critical to have an energy-efficient HVAC system.

Furnace efficiency standards were last revised to an Annual Fuel Utilization Efficiency (AFUE) rating of 80% in 2015. This rating system illustrates how effective your furnace is at natural gas into heat. An AFUE rating of 80% means your furnace loses about 20% of the fuel it uses while producing heat.

In 2022, the Biden Administration recommended new energy-efficiency standards for residential gas furnaces that would greatly lower emissions, save money and promote sustainability.

The updated standards are projected to:

  • Save Americans $1.9 billion annually.
  • Reduce carbon emissions by 373 million metric tons and methane emissions by 5.1 million tons over 30 years, the equivalent of what 61 million homes emit annually.

Starting in 2029, the updated rule would require all new gas furnaces to feature AFUE ratings of 95%. This means furnaces would combust nearly 100% of the gas into usable heat.

So what does all of this mean for your existing furnace in 2023? Currently, not much, as the proposed rule won't go into effect until 2029 at the earliest and does not affect furnaces that are already in use.

But if your furnace is nearing the end of its life and a replacement is needed in soon, highly energy-efficient furnaces are already available. Learn how these furnaces can lower your monthly energy bills.

Guide to Condensing Furnaces

How Condensing Furnaces Work

A condensing furnace is a type of heating system that uses a secondary heat exchanger to capture wasted heat from the furnace's exhaust gases. This reduces the amount of energy wasted, improves energy efficiency and lowers carbon-monoxide emissions. It also involves less natural gas to produce the same amount of heat when compared to other types of furnaces.

How Condensing Furnaces Differ from Non-Condensing Furnaces

The primary difference between a condensing furnace and a non-condensing furnace is that the former uses a secondary heat exchanger to collect any wasted heat from its exhaust gases, while the other does not.

Expected Longevity of a Condensing Furnace

The life span of a condensing furnace depends on the brand, model and other factors. In most cases, a condensing furnace is likely to last between 10-20 years with sufficient maintenance and regular service. If your heating system doesn’t have regular furnace maintenance, the equipment may not last as long.

Why Condensing Furnaces Are More Expensive

Usually, condensing furnaces are more expensive than non-condensing furnaces. This is partially for their increased efficiency and the extra hardware necessary to capture any wasted heat from its exhaust gases. However, the extra energy savings can often offset the cost of purchase. So long term, it may be worthwhile investing in a condensing furnace.

Guide to Variable-Speed Furnaces

Variable-Speed Furnaces: What They Are and How They Work

A variable-speed furnace can adjust its fan speed to better meet the heating preferences of your home. It operates at a slower speed until it senses a drop in temperature and then ramps up to supply more heat. This [precise fan is significantly more efficient than traditional furnaces, as it only consumes the minimum amount of energy required to heat your home, saving you money in the long run.

Most variable-speed furnaces are condensing furnaces, althoug