It’s been cold here in the Kentuckiana area, and we have many more months of winter ahead of us. If you’re in the market for a new heater or feel your heater isn’t running as it should, this blog post is for you! Heaters are significant investments, so we decided to highlight the best ones available.

If you bought your heater 15 years ago, it might come as a surprise to you how many energy efficient advances have been made in the HVAC industry. Nowadays heaters are significantly more efficient than they were five, ten, and fifteen years ago. That’s why this blog is dedicated to walking you through what energy efficient heaters are out there for you and how they work.

We hope that you take this information and put it to good use the next time you’re in the market for a new system!


AFUE Ratings

AFUE is the simple method that is used to rate how efficient heating systems are. This rating is used for both furnaces and boilers to gauge how much fuel is used towards heating the home. Thus, if the AFUE rating is a 90, 90% of the fuel used by the heater is converted into energy towards heating your home.

It’s quite simple and straight-forward, but altogether incredibly important when purchasing a new heater.



A condenser is a furnace that operates on the idea of minimizing waste and maximizing fuel use. A condenser acts like your typical furnace, as it burns fuel to heat your home. But after the first combustion process, the spent fuel that is usually lost completely is saved with a condensing furnace.

The wasted fuel from the first combustion phase is recycled back into a second combustion phase. There, the waste from the first phase is used as fuel to warm your home. The recycling of wasted fuel ensures a minimum of 90% fuel efficiency.

A condensing furnace requires PVC venting and possibly more maintenance than the typical furnace, but the money you’ll save on energy every month will be well worth it!

Multi-Stage Burner

The multi-stage burner is similar to the condenser in that there are two phases, the functionality of each being very different. With the conventional furnace it is either on or off; there is nothing in between regarding heat output. That means that once you turn your heater on it is automatically running at maximum capacity. Now let’s say that it’s a cold day but not freezing outside, would you need your furnace to operate at full capacity? No, and that’s where the multi-stage furnace takes effect.

A multi-stage furnace can meet the multiple stages of heating a homeowner needs, when and where they need it. If it’s cold outside and you need your furnace to run but not at peak capacity, the multi-stage burner will use the lower stages. As your need for heat grows greater and greater, the higher stages begin to work. These stages allow your heater to work as needed, rather than being entirely on or off, which lets you save an immense amount of energy.



Furnaces are not the only efficient heating systems available to homeowners. In fact, boilers have become incredibly efficient to their older counterparts of the past few years. Boilers have similar condensing technology that reuses waste to maximize fuel efficiency, but they also have cast iron, gas fired boilers that have an AFUE rating of 85!


Electrical Ignition Systems

Electrical ignition systems are the evolved version of the basic standing pilot light. The invention of the electronic ignition has made it possible for the system to stay warm and ready, without the constant burning of a pilot light. By eliminating the constant pilot light, your system saves an immense amount of energy every year.


Let TemperaturePro Keep You Warm This Winter

It get’s cold up here in Louisville, and you need someone you can trust to keep you warm when it does. At TemperaturePro, we’re entirely dedicated to the comfort of your home, and we’ll do everything we can to make sure it’s great! We hope this blog helps you the next time you’re in the market for a new heating system, and if you need any extra advice, you can always give us a call!