Coleman AC21 Review

The AC21 is the most advanced air conditioner from Coleman, and the only model in their line that has a cutting-edge variable-speed compressor. Thanks to the advanced compressor and other performance-enhancing features, the AC21 has a SEER rating of 20 and ENERGY STAR® certification, as well as advanced humidity control, superior temperature consistency, and quieter operation than other models. Like all Coleman air conditioners, the AC21 is also covered by a great warranty, and it’s more affordable than some of the better-known name brands on the market.

About the Coleman AC21

Average Price (with installation): $5000 - $6000+

Top Features

• Variable-speed compressor for ultimate cooling performance and efficiency
• Can be paired with the Echelon Hx3 touchscreen thermostat
• Added protective features ensure durable and lasting performance
• WhisperDrive system ensures quiet operation
• Advanced humidity control
• Excellent warranty
• More economical choice versus comparable models from other brands

The Bottom Line

The AC21 is Coleman’s most advanced and most expensive air conditioner, but it still doesn’t have a lot of the additional features and technologies offered by more premium brands. Nonetheless, this model does have an advanced compressor and excellent SEER rating, provides excellent humidity control, has been specifically designed to be quiet when running, and comes with great warranty protection.

In Depth Review

Coleman AC21 Product Specifications:

Compressor: Variable-speed
SEER: Up to 20
ENERGY STAR® certified: Yes
Decibel rating: As low as 53
Tonnage: 2 to 5 tonnes
Sub-models: AC21B2421S, AC21B3621S, AC21B4821S, AC21B6021S

Features Overview

Quiet operation: HVAC systems of old tended to be much noisier than ones manufactured today, and the AC21 is among the quietest on the market right now. This is thanks in part to the variable-speed compressor, but also the noise-reducing features built in to the system. These include a composite base pan, innovative WhisperDrive system, swept wing fan blades, and ECM fan motor.

Variable-speed compressor: Variable-speed air conditioner compressors have multiple speeds, and the system adjusts depending on your cooling demands and outdoor conditions. Because it has so many speeds, the AC21 is more efficient, provides more even temperature levels, is better at controlling humidity, and operates at a quieter level than models with a single- or two-stage compressor.

Humidity control: The AC21 has a number of features that make it ideal for controlling humidity levels in your home, including the variable-speed compressor and the Climate Connect system. Climate Connect is a series of four settings, and upon installation you can choose one to match your climate so the system provides customized cooling performance based on outdoor humidity levels.

Other Key Features

• Echelon Hx3 touchscreen thermostat compatibility means you can monitor and control the system remotely with your smartphone
• Fast and accurate installation with Charge View touchscreen display
• Environmentally responsible R-410A refrigerant
• Charge View display also allows for easy monitoring of the system, facilitates troubleshooting, and simplifies maintenance
• Easy access for cleaning and maintenance
• Copper core, corrosion-resistant filter drier protects the unit from moisture and debris
• High- and low-pressure transducers monitor performance and warn you of potential problems
• Specially designed coil guard protects the coil from damage and debris
• Protection from corrosion and the elements thanks to the high-quality powder paint finish

Warranty Information

Coleman air conditioners are covered by excellent warranties, and the AC21 comes with a 90-day labour warranty, 10-year parts limited warranty, and lifetime protection for the compressor. These warranty terms are available as long as you register the unit within 90 days of installation, otherwise the parts warranty will expire after five years and the compressor warranty after 10.

Comparable Models by Coleman

Model Comparison by Price: Coleman AC21 versus Coleman CC17

The AC21 is the premium air conditioner from Coleman, and also the most expensive model in their line. Depending on what you're looking for, you could pay anywhere from a few hundred dollars to $1,000 less for a lower-tier model. The CC17, for instance, is the top model from Coleman’s LX series, and it typically ranges from $2,900 to $4,300.

Model Comparison by Features: Coleman AC21 versus Coleman CC17

To compare the AC21 and the CC17 further, the CC17 has a two-stage scroll compressor and a SEER rating of 17. It also doesn’t have the Climate Connect technology, and it’s not equipped with the Charge View display. However, if you're looking for a more affordable air conditioner with similar warranty terms and quiet operation, then the CC17 is a more budget-friendly alternative to the AC21 that still boasts a great efficiency rating, excellent performance, and dependable cooling comfort.

Model Comparison by Tier: Coleman AC21 versus Coleman AC19

Coleman’s two top-of-the-line air conditioners are the AC21 and AC19, and they each have their own pros and cons depending on what you're looking for. If budget is your main concern, then the AC19 is the superior choice, because it will cost at least $500 less to purchase than the AC21. However, the AC19 isn't quite as efficient (SEER 19), and it has a less advanced two-stage compressor, so it’s not quite as effective with temperature maintenance and humidity control. Beyond that, the two units are similar in terms of other features and specifications.