Heating Systems

Gas and oil furnaces provide warm, even heat throughout your home by circulating heated air through ducts. The heat is created by burning gas or oil inside your furnace. Hot gases that are created pass through curved metal tubing called a heat exchanger and then out of your home through a metal or plastic vent pipe. At the same time, the air that circulates through your home passes over the outside of the heat exchanger and takes on the heat from the hot metal. The warm air is then circulated through your home.


Hovland’s and Lennox furnaces have a reputation for quality and reliability that can save you headaches and extra expense down the road. Lennox is recognized in the industry for its state-of-the-art research and development laboratories and is certified as an official test site for the American Gas Association. Lennox product continuously undergoes extensive lifecycle and field-testing procedures to insure manufacturing excellence. Almost every Lennox furnace we sell includes a Limited Lifetime Warranty on the heat exchanger (the heart of the furnace) and a minimum 5-Year Limited Warranty on parts. Hovland’s is pleased to offer dependable and energy efficient furnaces from Lennox!


Some mid- and high-efficiency furnaces offer additional features that provide greater comfort, as well as additional energy savings.

Two-Stage efficiency provides two levels of heating output for greater temperature control, energy efficiency and improved indoor air quality. A correctly sized furnace must be able to maintain the temperature in your home even during the sub-zero weather that we experience here in the Midwest. We all recognize (and hope) that the average temperature during our Wisconsin winters is somewhat warmer, but this means that on an average day the full capacity of your furnace is not required.

Both the Lennox G61 and G61V gas furnaces provide two levels (stages) of heat output for enhanced comfort and efficiency. It’s like having two furnaces in one – a small furnace (low heat) for mild days and a larger furnace (high heat) for extremely cold days. Unlike typical single-stage models that operate only at full capacity, a two-stage gas valve on these units adjusts the output of the furnace to match your home’s heating demand. Most of the time, it runs at low stage, resulting in a more even heat distribution for greater comfort, quieter operation, and greater energy savings.

Variable-speed blowers offer additional features and benefits to consider in the purchase of a new furnace. They utilize motors that are designed to be more efficient than standard motors, reducing electrical usage, and are engineered to operate very quietly. These motors ramp up to speed slowly, eliminating the sudden blast of air at startup and because they are designed to run continuously the air in your home is being filtered 24 hours a day, rather than only during a call for heat or cooling. In the summer, your air conditioner removes moisture from the air more effectively for improved comfort and better air quality. These benefits are important, especially for people suffering with allergies. Between furnace cycles the blower runs at a very low speed and is so quiet it is almost undetectable. While running at this lower speed your furnace filter is also able to trap many more particles from the air than when the air is rushing across the filter.

The Lennox variable-speed blowers also detect when your furnace filter is dirty. A dirty or partially plugged air filter will normally decrease airflow and can cause multiple problems within your system. This specially designed blower not only senses the increased restriction, but automatically ramps up to overcome it. Combining this feature with a Lennox PureAirTM Air Purification System or Healthy Climate® Media Air Cleaner can provide optimum air filtration and greatly enhance the indoor air quality of your home.

Variable-capacity is an advanced technology available with the Lennox G71P gas furnace that provides the ultimate combination of comfort, efficiency and quiet performance. The Lennox G71P constantly monitors and automatically adjusts fan speed, heat and airflow capacity demands to match the space requirements of your home. It goes beyond two-stage efficiency, varying output from 40% to 100% , keeping your home perfectly comfortable on milder days, the coldest days, and every day in between while operating at maximum efficiency. Think of it this way: a standard furnace operates like a car in stop-and-go traffic – it’s either moving or sitting still, burning lots of fuel in the process. The G71P operates more like highway driving with the cruise control on – making slight adjustments while maintaining maximum fuel efficiency.

Annual Fuel Utilization Efficiency (AFUE) is a measure of a furnace’s heating efficiency and one of the first things to consider when purchasing a gas furnace. The Dept. of Energy requires that all new furnaces meet or exceed a 78% AFUE rating and that all furnaces be tested according to government standards so that consumers can easily compare the efficiency ratings of various units. The higher the AFUE rating – the more efficient the furnace.

By replacing an old, inefficient unit with a new high efficiency model, more of the fuel you pay for is turned into heat. The more efficient the furnace – the lower your heating bill. Although higher efficiency units may require a greater initial investment, over the life of the unit the incremental cost is normally recovered through energy savings and lower operating costs during the first few years. If your present furnace is 15 years old or more, it is likely in the 60-70% AFUE range. In that case, 30 to 40 cents of every dollar you spend for heat is being wasted. By replacing an older, inefficient unit with a new high efficiency model, more of the fuel you pay for is turned into heat.


Usually, the higher the efficiency, the more expensive the inital cost of the furnace. Since we live in a cold climate, the higher cost of a high-efficiency furnace is often recovered through lower utility bills in a few short years. Hovland’s can help you determine about how long it would take you to recover the additional cost in energy savings. Of course, after the payback, you continue to save on your energy bills for the life of the system

Lennox has earned the Good Housekeeping Seal on select residential furnaces, air conditioners, heat pumps, air handlers, packaged units, indoor coils and boilers. The most recognized and trusted symbol of product reliability and durability, the Good Housekeeping Seal is your assurance of outstanding product quality.

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