If you’re considering a new furnace or central air conditioning for your home, you’ll hear the term ‘Variable Speed’ and see the letters ‘VRV-VRF’ during discussions and in reviewing sales materials. 

But, what do these mean?  More important, are they worth the costs attached to equipment with this feature? 

Here’s the truth . . .

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

• Keeping more treated air inside your home (less exhaust).

• Maintaining a more constant temperature level in your home.

It’s the second result – maintaining more consistent temperature – that is the product of the advanced Variable-Speed feature. 

Multi-speed Difference.

The professionals at Flader Plumbing and Heating are knowledgeable and expert in today’s sophisticated heating and air condition systems.  They can fully explain the technology.  But, since it is a costly feature, I want to offer my thoughts.  Simply stated . . .

Variable Speed technology automatically alters the speed of the flow of air 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 that goes on-and-off in cycles as the thermostat setting and room temperature varies.   The single HIGH-speed blower fan tends to be . . . noisy . . . wares-out parts quickly due to frequent on-and-off cycles . . . uses more energy in starting and stopping the high-speed blower . . . and, as a result, is less efficient than VARIABLE-speed functioning.


Variable Speed technology is:

• Quieter.

• Affords greater comfort.

• Offers humidity or dehumidification control.

• Delivers more even temperatures throughout your home. 

Variable speed technology is already part of many high-efficiency furnaces.  It’s recognized as superior technology.  And, it delivers greater comfort for your home.


While the variable speed feature makes HVAC equipment initially more expensive, it saves homeowners in energy costs each month.    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, an experienced and certified Flader technician can help as you weigh the value.   Plus, we offer advice on manufacturers’ 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.  Each situation is truly unique.

We Help Homeowners

Flader Plumbing and Heating is uniquely suited to assist in determining the ‘right’ state-of-the-art system for your home.  We’ve been serving the Community for over 100-years and 4-generations of the Flader Family. 

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.

•  The most dependable equipment and performance parts.

•  100% Satisfaction Guaranteed.

Reliable and Trusted

We’ve been serving homes in our neighborhood with prompt, dependable, and reliable service that meets the highest standards.    Experience counts!  Your neighbors rely on and trust us for advanced products and expert service. 

Whether you’re replacing your furnace or central air conditioning, adding a dehumidifier or clean air system, or cleaning and servicing your heating and air conditioning system, the professionals at Flader Plumbing and Heating are knowledgeable and expert in meeting your needs.   

Look to us for your annual inspection.  To diagnose and fix a malfunction.  Improving ventilation.  Replacing Filters.   Replacing that old hot water heater.  Installing an advanced, state-of-the-art high-efficiency furnace and air conditioner system.  Unclogging that drain.

Just a Phone Call Away

Our professional technicians arrive on-time, listen, answer your questions, recommend the right solution, and deliver as promised.    They are licensed, average 10-years of experience, and are EPA certified.     Flader is located right in your community.  We’re responsive in answer the phone and being at your door. 

Expert service, quality parts, and satisfaction guaranteed.  That’s the combination you deserve for your plumbing, heating, and air quality.  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.

Flader Goes Skyward

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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Flader continues supporting local youth programs. We proudly sponsor EBSA and events at Robert Crown Community Center. It teaches teamwork, builds confidence, and strengthens our community.

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Evanston Service Center: 3004 Central, Evanston, Il 60201
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