New Air Handlers

Shaking Things Up: New B6 Air Handlers
In the past year, NORDYNE has launched some significant products – a single-stage 95% furnace, packaged equipment with Micro-Channel condenser coils and two 95% efficient furnaces for manufactured housing. Our most innovative launch, however, might just be the new line of B6 air handlers.

These new air handlers include two ways to combat coil leaks – and customer call-backs.


1)  13 & 14 SEER: All-aluminum Anteater MC™ Micro-Channel evaporator coils.

Models B6EMMX and B6BMMO include Anteater MC™ Micro-Channel coils. These evaporator coils are constructed of aluminum extruded tubes that are brazed to enhanced aluminum fins. Because Anteater MC coils are all aluminum, they eliminate the copper element in the formicary corrosion combination. Without copper, the corrosion process cannot happen.


This coil design provides water management and thermal performance results equal to the standard copper tube-in-fin designs, except with superior resistance to formicary corrosion and galvanic corrosion. Benefits include:

  • Same size as traditional tube-in-fin coils
  • Eliminates both formicary and galvanic corrosion
  • Reduced weight – approximately half the weight of a traditional coil
  • Easier handling and servicing of units
  • Requires approximately 50% less refrigerant than traditional copper tube-in-fin coils

The Anteater MC Micro-Channel coils have been extensively tested for proper water management.  To learn more, watch our technical services video.


2) 16 & 24.5 SEER: Copper tube-in-fin with Anteater™ technology.

Our new B6VMAX and  M6VMAI variable-speed air handlers utilize traditional copper tube-in-fin coils, but with Anteater™ technology for 50 times better protection against formicary corrosion than untreated copper. They are designed to outlast standard coils in high-moisture environments.

The Anteater coil is made with UNIGUARD™ copper alloy, which includes zinc additives to stop formicary corrosion from tunneling through the material. When acid begins to attack the coil copper, the Anteater alloy prevents the acid from tunneling completely through the copper grain. Some surface pitting will still be evident, but the damage will be stopped before it can cause a leak.

Read any HVAC online forum, and it’s obvious the industry is plagued with coil leaks. NORDYNE decided to do something about it. If our customers’ homes are changing, then we will too – and put an end to leaks.

Let us know what you think about these new air handlers in the comments.

Join the Conversation

30 comments on “New Air Handlers”
    • Micro-Channel is designed — and tested — to work with R-410A and R-22. If you have questions about the technology in your application/market, feel free to call our tech services team at 1-800-422-4328. 

  • I just bought a house with a #B6BMM042K installed in the attic (it's a tri-level house).  The condensation from running the unit drains directly outside, where it (currently) simply drips onto the patio (Seriously.  I didn't design it that way.).  Since I'm going to be capturing the water anyway (so we can use the patio without getting splashed on), I thought it'd be great to re-purpose it and use it on our plants.  It appears from this page that the coils in the unit aren't copper, but I'd like to confirm that please, before we start watering our plants with it – I definitely don't want to do this if there's a risk of arsenic leaching into the water from copper coils.  Thanks!

    • Hi Michael — Great question — and smart thinking! I checked with our technical team, and they say it’s okay to reuse the water. Just let your contractor know when you have annual maintenance done so the contractor doesn’t put any drain cleaner down the condensate in the future. Also, for anyone else reading, this only works because you have an air handler. If you had a gas furnace, the condensate would be comingled with flue gas, so you wouldn’t want to use it on your plants. Thanks!

  • Hello, Several things to discuss. We are an installer, handling mainly Nordyne products. One thing we find is that there is no way to stop the front return coils with the micro channels from dripping. Even with coil cleanings, ( which we should not have to do) fan speed changes and varying the charge of freon in the system. When the coils, even on A- frame coils get a little mold on them they drip either during running or during shut down. Instead of the micro channel design, it would have been much better to stay with a fin and tube type of design. Like what Trane is using or what older York and Lennox used to use in Aluminum. Now coupled with the industry wide compressor oil fouling the TXV's, I will have to limit the Nordyne products we carry, because of the effort we have to put forth in remedying the product. The Nordyne product was much easier to work with in the past. Also, we notice that the microchannel coils installed in condensing units near salt water develop leaks in the bottom, where they rest on the plastic spacers.  I believe that if the micro channel coils were dipped in a thin coating, it would save a lot of warranty work. I am a design engineer by background and try to make improvements when I see the product performance in the field. Please be free in contacting me if I can lend a hand. Contact me by email if you could use my phone number.   Also, I would seek to purchase a good quantity of restricxtors and restrictor housings from you dierect if I may.

    • Hi Peter — I recommend you contact your NORDYNE sales manager or distributor for an update on the equipment. We have made many improvements to the Micro-Channel coils in the past year, and are working on the TXV issues (which is industry-wide) right now.

  • micro coil keeps sluging up cloges drain put in algey tablets stll sluges up.Had this problem before with rheem acid bath coil fix soport has know answer. What do you recamend Iclean that coil with thats not acid.

    • Hi — I checked with technical services, and they recommend anti-bacterial tablets. If you’d like to discuss it further with our technical team, feel free to call 1-800-422-4328 M-F, 8:00 am – 4:30 pm central. Thanks!

  • kari,

    Thank you for responding, however, the coil that was replaed in 2011 was not the new anteater coil, since microchannel was introduced in Nov, 2012. I can't speak to the anteater availabity, but it seems that was the time frame as well. Is Nordyne going to fix the issue with Mico channel coils or hope the current anteater solution works. What data can you provide to show the new coils with Anteater technology will last since they have only been available for less than two years?  I have a true 3t on unit, is  the X37 coil is that available in Anteater technology? Last fall it was not and I still have a leaky coil.

    Thanks for listening, but want a definitve answer to my questions so i can work through the contractor to get a system that will work as it was sold without the continued leaky coil issue.




  • I currently have a complete WH system, FG7TC 080D VC, FS4BF-036KA, C6BA-X37C-C coil Heating is great, AC not. Install 5 years Second coil leaks again. What is the true fix for this leaking coil issue on 2 stage 16SEER systems? I am tied of getting a coild every two years and a recharge in between. It's May 12th 2014 humid in Ohio and no AC. I asked these questions in 2011 and no one has helpedme to resolve this issue. Call me (937) 890-6418.  I need help, Kari can you help me?

    • Hi Mark — You currently have the right coil, and it’s a protected Anteater coil to avoid leaks caused by formicary corrosion. I ran your comment by product management, and they were surprised you’re getting leaks. Your best resource is going to be your local contractor who can see your system as we can’t diagnose it here. Sorry I can’t be of more assistance. 

    • Hi Ted — Chances are good that in 2002 they were all R-22 systems. You can tell for sure by the model number. If there is a “4” in the model number (like JS4BD), it’s R-410A. If it’s 1, 2,3 or 5, it’s R-22.

  • So, what about the customers who swear they change their filters every month and really don't. How can you clean a coil like this blocked with dog/cat hair and dust?

    • Same as a regular tube-in-fin. If it’s blocked, the contractor would probably have to completely remove it from the indoor unit and clean it with a garden hose. If the coil cannot be cleaned sufficiently, it would have to be replaced.

  • Some of your Packaged AC and Gas/Electric units have copper/al coils and some Micro-Channel. It seem the SEER does not explain why. So why not all Micro-Channel?

    • Good question. As you know, we are the developers of Micro-Channel evap coils, and we haven’t developed all sizes yet. So in some cases MC may be in some tonnages, but not all, even within a specific SEER level. In other cases, we got better performance with a non-MC coil, so we used that one. Hope that helps!

    • Good question. It was a manfuacturing decision to reduce the amount of inventory a distributor must carry since one coil can serve for both 13 SEER and 14 SEER applications this way.

  • Good question, Jim. We have not yet finalized Micro-Channel for use with 16 SEER and higher equipment yet. While there's a chance it might work in some cases, it's not fully tested and we don't have our products rated with it. Also, it may be problematic with heat pumps.

  • Just wanted to say, Been working with the new coils for a while and they have been great for us haven't had any leaks on any systems. Micro-channel is so much better than fin and tube.  

  • We could tell you how it's connected, but then we would have swear you to secrecy. Seriously, it's actually a patented process for brazing copper and aluminum that was developed for NORDYNE. As far as the repair goes, we recommend replacing the coil and not repairing.
    Thanks for the comments.

Leave a Reply

Your email address will not be published. Required fields are marked *

How can we help you today?

Contact Us