Variable Airflow

Spending more time at home these past months increases the attention many of us pay to the comfort of our surroundings. We all want our family to be safe and comfortable. Among the first things we notice in our home is its warmth on winter nights and its cool escape on a hot summer night.  

If you are considering a new furnace or air conditioner for your home, you’ll hear the term “Variable Speed” and see the letters “VRV-VRF” in reviewing product specifications and sales materials. What do these mean? More importantly, are they worth the cost attached to equipment with these advanced features? Here are your answers.  

Your Guide to Variable Airflow

Today’s heating and air conditioning systems are incredibly sophisticated machines and far superior to their predecessors. They’re fine-tuned, highly-sensitive operating systems designed with controls and sensors to maximize efficiency and performance. Efficiency that results from:

  • Keeping more treated air inside your home.
  • Maintaining a more constant temperature throughout the home.

It’s the second result – maintaining a more consistent temperature – that is the product of advanced technologies like Variable Speed features.  

Multi-speed Difference.

Variable Speed technology automatically alters the speed of the air circulating throughout your home. A multi-speed blower automatically changes from high to low to create consistent room temperature.  

This is different from the traditional operation of a furnace with a single high speed, which goes on and off in cycles as the thermostat setting and room temperature vary.  The single high-speed blower fan tends to be noisy, wear out parts quickly due to frequent on-and-off cycles, and use more energy in starting and stopping the high-speed blower, making it less efficient.  

Multi-speed Benefits.

Variable Speed technology:

  • Delivers more even temperatures throughout your home.  
  • Offers humidity or dehumidification control.
  • Is quieter.
  • Affords greater comfort. 

Variable Speed technology is already part of many high-efficiency furnaces and is recognized as superior technology. Most importantly, it delivers greater comfort for your family and guests in your home.


While the variable speed features make HVAC system equipment more expensive, they actually save homeowners in energy usage. As a result, energy costs are lower each month. In a relatively short period of time, it pays for itself. The time in which you recoup your investment will vary from house to house. 

Do the Math.

As you consider variable speed for your furnace, a Flader Certified HVAC expert can help you weigh the value. Plus, we can highlight manufacturer discounts, rebates, and applicable government tax credits.    

You’re making a multi-year investment in your home. Careful study is necessary to weigh the variables and project your future comfort level. There’s no easy answer, as each situation is truly unique. 

We Help Homeowners

Flader Plumbing and Heating is uniquely suited to assist you in determining the solution that best fits your home and family’s needs. We’ve been serving your neighbors and our community for over 100-years and 4-generations. 

The Flader Difference

Only Flader Plumbing and Heating delivers:

  • The most responsive service – 24-hours/7-days a week.
  • Personal attention from certified and licensed technicians.
  • Only the most dependable equipment and parts. 
  • Money-saving Maintenance Agreements.
  • 100% satisfaction guaranteed.


Flader Plumbing and Heating only recommends equipment, models, and brands proven to have the fewest problems and service calls. We specialize in:

Comprehensive Services

Whether you’re replacing your water heater, furnace, or central air conditioning, adding a humidifier or clean air system, or cleaning and servicing your air quality system or sump pump, we are knowledgeable and expert in delivering the service you need.   

Flader professional technicians arrive on-time, listen, answer your questions, recommend the right solution, and deliver as promised. Our technicians average 15-years of experience and are EPA certified.    

Expert service, quality parts, and satisfaction guaranteed. That’s the package you deserve. Don’t compromise. Call us at 847-491-6980.  

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Flader thrives on exceeding expectations of our residential and commercial customers.  We deliver cost effective solutions for homeowners and businesses.  Our Service Centers in Evanston and Libertyville are ready to serve.  Call us today at 847-491-6980.

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A long-term commercial customer needed an upgrade on their air quality system.It required two 20-ton and two 10-ton Carrier units mounted on the rooftop, plus piping and custom sheet metal inside their manufacturing center. The Flader Team went skyward with a huge crane to land the units on the rooftop.In just 2½ days, the transformation was completed.Click “See our Work” to view more success stories.

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