Lennox Merit Series ML193 Gas Furnace

Posted: 2018-02-22

Your furnace is an important piece of equipment that keeps you and your family comfortable in the midst of an extremely cold weather. However, just like any other appliance, it’s not meant to last forever. It will experience a decline in performance at some point, especially in the last two years of its life.

An old, poorly performing furnace isn’t something you would want to keep during a relentless winter night in Minnesota! Not only is it uncomfortable, it will also rob you of your peace of mind.

For absolute comfort, you might want to replace your existing furnace with a new, high-efficiency model.

Four Seasons Air Specialists is a heating company in Vadnais Heights, MN that offers Lennox high-efficiency furnaces, which are some of the best in the industry.

This article explains why it makes sense to go with a high-efficiency heating system and also highlights the ML193, one of the models in the Lennox Merit Series.

What is a High-Efficiency Furnace?

A furnace having at least 90 percent AFUE rating is considered a high-efficiency model. Also called a condensing furnace, it utilizes a second heat exchanger to extract heat from the exhaust gases that would be otherwise be vented out of your home with less efficient systems.

These furnaces consume 30 percent less fuel compared to older furnaces, most of which run at an efficiency rate of 75 percent or less.

According to the U.S. Department of Energy, more efficient models are required in the U.S. North Region due to the colder climate and greater number of heating degree days.

The U.S. government particularly offers a federal tax credit of up to 30 percent, or up to $1500 if you purchase and have a high-efficiency furnace installed in your home.

While it is true that high-efficiency furnaces are considerably more expensive than lower-efficiency models, this tax credit can compensate for the price difference, should you decide to go with a high-efficiency heating system.

Features of the Lennox ML193

Standard Features

With product registration, the ML193 may be eligible for a 10-year Limited Extended Warranty. Lennox also offers a 5-year Limited Warranty on covered parts and 20-Year Warranty on the Heat Exchanger.

Every component of the ML193 has proven itself through extensive testing in our research labs. So you can take comfort knowing the furnace will deliver reliable performance, season after season.

Energy Efficiency

Compared to older, low-efficiency models, the ML193 has an efficiency rating of 93 percent AFUE that can save you hundreds of dollars in heating costs per year.

When paired with a Lennox® heat pump, the ML193 creates a system that can automatically alternate between electricity and gas fuel to keep you warm. So you’re always using the most energy-efficient way to keep comfortable.

The blower compartment of the ML193 is tightly sealed, permitting less than 1% air leakage. This means more of your air and energy go toward keeping you comfortable.


The ML193 has a Duralok Plus heat exchanger that is constructed from patented ArmorTuf steel that captures waste heat, and a stainless steel secondary heat exchanger that allows the unit to achieve industry-leading efficiency levels. This solid component exceeds industry requirements and extends the furnace’s life.

Its SureLight® ignitor is designed with silicon nitride construction for long product life and reliable operation.

Its SureLight® integrated control board ensures full control of furnace operation.

To further lessen heat loss, Lennox designed the ML193 with an elegantly-styled, durable steel cabinet with high-quality paint finish.

Ask the High-Efficiency Heating Pros

Here at Four Seasons Air Specialists, we understand that your family’s comfort is of utmost importance to you. After all, you can’t put a price tag on your family’s convenience and safety. An old furnace doesn’t only waste a lot of money on energy, it also compromises your health because of its lack of efficiency.

Entrust your Mahtomedi furnace installation needs only with a Dave Lennox Premier Dealer like Four Seasons Air Specialists.

In order to earn and maintain our Premier status, we strive to consistently meet and exceed customer expectations. To ensure we do that, we are trained to design, install, service and maintain HVAC systems, are dedicated to achieving complete customer satisfaction, and must maintain a 5-star rating among consumers.