Rheem furnaces are rated as the highest energy-efficient gas furnaces on the market. As gas prices continue to rise, this performance efficiency is becoming a much bigger factor in determining the overall quality of a gas furnace model. Started almost a century ago as a nationwide HVAC company since the 1950s, Rheem is a brand name that has been synonymous with quality and reliability for decades. They've been a part of the major technological advances in home heating and continue to explore new territory. With 19 gas furnaces, 2 oil furnaces, and 10 heat pump models, you'll be able to find the heating unit that's right for your home.
Rheem Classic 90 Series Plus
This is the premium gas furnace on the market for energy-efficiency performance. As with any heating option, price is often related to performance. The more you spend on the initial installation the less you should be paying per month for your utility bills.
So how do you choose? On average, a high-performing gas furnace will pay for itself in approximately five years. This estimate, however, will vary depending on how many months a year you will need to run your furnace and how cold it gets where you live. Energy-efficiency performance saves you a certain percent of fuel use. Thus, if you're running your furnace harder and longer, the more important energy-efficiency will become.
The Rheem furnace is so popular because gas furnaces are best designed for high demand situations. If you live in a colder climate, the Rheem furnace is well worth the extra initial cost. If you live in a warmer climate, a gas furnace probably isn't the best heating option for you to begin with. A Rheem heat pump is probably a better choice.
The Safety of Heat Exchangers
The majority of gas furnaces vent their by-products by allowing their natural heat to rise through the furnace vents. While this works fine when a furnace is operating smoothly, airflow blockage or vent deterioration can prevent this fragile exhaust system. Energy-efficient Rheem furnaces use a heat exchanger to enhance the ventilation of by-products through the combustion chamber. And, worst-case scenario, if something should still go wrong with the ventilation system, a pressure switch will shut the furnace off, protecting your home from this furnace hazard.
Rheem Heat Pumps
If you live in a warmer climate, you should consider a Rheem heat pump. The size and scope of the Rheem label will greatly benefit you in this situation. Their 10 models vary their respective HSPF (heating efficiency) rating and SEER (cooling efficiency) rating and the models' cost so you can find the unit that perfectly matches your heating and cooling needs. 
Marcus Pickett is a professional freelance writer for the home remodeling industry. He has published more than 600 articles on both regional and national topics within the home improvement industry.