DUCANE AC12B Central Air Conditioners

Ducane AC12B Air Conditioner Overview

Ducane’s discontinued AC12B is a single-stage, 12 SEER split-system air conditioner series. Reaching a cooling capacity up to 34,600 BTU/H, the AC12B is available in seven different models ranging in height from 26 to 38 inches.

This series features a Copeland compressor with internal pressure relief valves; liquid line filter drier to protect the compressor from moisture and harmful particles; and a condenser coil with copper tubing and louvered fin for efficient heat transfer. A hinged control panel provides quick access to the internal components for general maintenance.

The AC12B is protected by a heavy gauge, textured pre-painted cabinet and is promoted by the manufacturer for its quiet operation. The compressor, enclosed fan motor, upward air flow and Ducane air management system help keep operational noise to a minimum.

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Consumer Reviews of Ducane AC12B


  • Very Satisfied
  • Somewhat Satisfied
  • Neutral
  • Somewhat Unsatisfied
  • Very Unsatisfied
  • #1 of 2 Ducane Air Conditioner
  • 100% of customers recommended

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Ducane AC12B Air Conditioner Reviews

"Love Ducane"

5.0 rating
Very Satisfied

I've had Trane equipment in my house, and Bryant. I've had nothing but issues. I had a company talk me into Ducane and it's quiet and problem-free. I love the warranty they offer. I finally have piece of mind.



"Ducane central heat and air systems"

5.0 rating
Very Satisfied

I am a New Jersey-based contractor who has been installing Ducane products for 30 years. In the early years we had a few issues but as time went on these products have increased in performance. Now I see a lot of poor reviews and would like those people to email me so I can find out more about their issues because with proper sizing and proper installation I have had no issues with Ducane products at all. That is 0 issues. That is an awesome track record and I have 30 years worth of customers to back me up. So if your issue is a poor contractor, that is not a valid reason to trash the system. It means you need a better contractor. So please forward your issues to [email protected] with a complete experience so I can figure out what the issue really was. Thank you.

Joe Falcone

New Jersey

"Don't blame the equipment."

5.0 rating
Very Satisfied

Having read the recent reviews I find a need to enlighten some of you. I been a heating / HVAC contractor in the Chicagoland area for over 30 years. I've installed thousands of furnaces and A/C units using many different brands. I would say my call back rate in the first year was less than 2%. That's because I took the time and followed the manufacturer's instructions on how to install these units. I installed a 90% efficient Ducane furnace in my own home many years ago and never did anything to it (except replacing the filters at timely intervals). Poor installation practices could shorten the life of any brand furnace or air conditioner. Not changing the filter regularly could also shorten the life of the equipment. So please do not blame the manufacturer.

J. Budka

Chicago, IL

"Ducane AC"

5.0 rating
Very Satisfied

I am a licensed AC contractor and have installed many of these units. They have never given me problems. Reading all these bad reviews it seems to me that the main problem is the installer. If you get a professional installer to install your central air conditioning system you will most likely not have any issues. Not just with a Ducane but with most brands. You may pay a little more but it's well worth it.


Toronto, Canada

"AC Unit"

5.0 rating
Very Satisfied

Installed in 2005, never had a problem. Gave it a checkup in 2013, nothing wrong, does not even need freon. The tech said, it runs great.

tom scranton

new york

Other AC12B Reviews

While homeowners on gardenweb.com indicate the AC12B runs smoothly and has helped lower their utility bills, others have run into repeated issues with the unit. DIY sites such as justanswer.com have several troubleshooting inquiries for this unit. Issues include: the system blowing warm or little air, component failures, and problems with the compressor working property.

Professionals on hvac-talk.com are equally split as to the quality of these Ducane units. Some recommend these cooling units to homeowners shopping for a basic system, stating that it’s a reliable unit at a good price. However, other contractors consider this a low-grade brand and mention frequent problems with parts as well as warranty issues.

DUCANE AC12B Model Numbers

The AC12B is available in different models which vary in efficiency and capacity.

Model Number SEER BTUs per Hour
AC12B18 12 18,000
AC12B24 12 23,200
AC12B30-A 12 29,000
AC12B36 12 34,600
AC12B42 12 40,000
AC12B48 12 47,000
AC12B60 12 60,000

AC12B Warranty

Ducane offers a 10-year limited warranty on the compressor and 5-year warranty for all remaining parts. The warranty begins on the date of installation and only covers mechanical parts. Extended warranties may be available through a local contractor.

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