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How To Fix a Unico Air Conditioner


Air Conditioning, Older Homes

Unico air conditioners are an excellent HVAC option for homeowners who don’t want to tear apart their homes to install central air conditioning and heating ductwork. These high-efficiency systems fit where other systems don’t and integrate with almost any outdoor unit brand. As great as these systems are, though, they can still run into issues that need repair.

At American Vintage Home, our team has extensive experience working with Unico air conditioners, which is why we’ve put together this guide to fixing your Unico AC system.

Understanding Unico Air Conditioners

To be able to fix your Unico System, you need to first become familiar with its basic components, which include:

  • Air handler: An air handler consists of an evaporator coil, blower motor, and air filter and is responsible for distributing conditioned air.
  • Electric duct furnace: This part of your Unico system provides primary or auxiliary heat to replace natural gas furnaces.
  • Plenum: Unico’s fiberglass square plenum connects the air handler to the ducts
  • Ducts: Unlike traditional ducts, the ducts of the Unico system are flexible 2-inch or 2.5-inch diameter tubes that weave through ceilings, walls, and floors to deliver air.
  • Outlets: The supply outlets anchor the supply ducts and quietly deliver high-velocity air into the conditioned space.

Common Unico Air Conditioning Issues

Although Unico Systems feature innovative design and somewhat different components than a traditional air conditioner, you’ll find that when problems arise, they’re similar to what you’d experience with a typical AC. The top issues include:

  • Water leakage
  • Subpar cooling
  • Cycling
  • Offensive odors

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DIY Steps To Fix Unico AC Issues

If you’re handy and have some experience with AC systems, you may be able to fix the problems that have arisen in your Unico System. Try the following to clear up the issues.

  • Water leakage: Clear and clean the condensate pipe, and change the air filters.
  • Subpar cooling: Check the compressor and ducts for damage and fix them if you can. If the evaporator coil has frozen, defrost and clean it.
  • Cycling: This is a sign the capacitor is compromised and likely must be replaced.
  • Offensive odors: Wash or replace dirty air filters. Remove debris from the condenser unit and clean the coil.

Preventive Maintenance for Unico Air Conditioners

Naturally, it’s best to remain proactive and not wait for issues to develop with your Unico AC. You can perform some DIY maintenance to prevent issues, such as regularly replacing filters and keeping the unit as clean as possible at all times. Professional maintenance covers more complex yet crucial steps, including:

  • Wiring inspection
  • Coil straightening
  • Motor and blower bearing lubrication
  • Condensation pan draining and cleaning
  • Bypass valve check
  • Motor belt and pulley check

In short, a technician will check all the components and connections where issues most commonly arise, which can save you a significant amount of money by revealing problems early.

When To Seek Professional Help

While some homeowners can perform DIY Unico System repairs, it’s usually not a good idea for multiple reasons. For example, attempting to replace a capacitor means exposing yourself to possible electrocution and will void your warranty. To avoid injury and improper repairs or replacements, go with the pros at American Vintage Home. We’re known as the “Older Home Experts,” and our HVAC technicians are highly experienced in repairing Unico air conditioners.

Call us at (847) 999-4595 to schedule quality Unico air conditioner repairs with our licensed and qualified technicians in the Chicago North Shore area.

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