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Lennox Air Conditioner Review & Buying Guide
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15,000+
Lennox
4.6
Average Rating By Homeowner
$5,500
Average Price Including Installation
Lennox Air Conditioners At a Glance
Strengths
Areas for Improvement
Lennox Air Conditioner Review
In this review, we’ll explore Lennox air conditioners in detail—highlighting their strengths and weaknesses, comparing all available models, outlining special features, examining warranty coverage, reviewing HVAC accessories, and sharing insights from real Canadians and HVAC experts.
Choosing a new air conditioner is a significant investment for your home. That’s why it’s essential to research thoroughly, compare brands, and shop around before committing to a specific model or manufacturer.
To make your decision easier, this comprehensive guide provides everything you need to know about Lennox air conditioners, including their models, features, and efficiency ratings.
Also Read: The Best Central Air Conditioners for Canadians
The Bottom Line
With over 100 years in the HVAC industry, Lennox is recognized for producing high-quality air conditioners that deliver excellent efficiency and reliable comfort during hot summer months.
Lennox offers a wide range of models to suit various needs. If you’re prepared to invest in a premium brand, you’re likely to find a cooling solution that perfectly matches your home.
Even on a smaller budget, it’s possible to find entry-level Lennox models that maintain strong efficiency and performance. Available rebates can also make these units more affordable, allowing homeowners to enjoy the quality and prestige of Lennox without overspending.
Lennox Customer Reviews
Positive Feedback
Most homeowners are satisfied with their Lennox air conditioners. The majority report that their units operate:
- Quietly
- Efficiently
- Reliably
Many also appreciate the variety of features offered across different models. Quiet operation and energy efficiency are consistently highlighted. For instance, the Lennox Merit 13ACX, priced around $3,500, is often recommended as a solid choice for those new to the brand.
Areas of Concern
A small number of users have reported occasional issues, such as:
- Inconsistent cooling performance
- Reliability concerns with specific models
However, these cases appear to be exceptions rather than the rule.
Lennox Air Conditioner Model Series Overview
Good: Merit Series
The Merit Series represents Lennox’s more affordable air conditioners. These units feature single- and two-stage systems that provide reliable cooling during the summer months.
- Efficiency: SEER ratings range from 13 to 17, with select models earning ENERGY STAR® certification.
- Features: While these lower-end models lack compatibility with many mid-range and premium Lennox technologies, one model includes the Quantum Coil for durable, corrosion-resistant performance.
- Design & Reliability: Merit Series units maintain Lennox’s signature quality, longevity, and quiet operation. They also carry the same warranty terms as higher-tier models.
Better: Elite Series
The Elite Series offers a step up in price, efficiency, and features.
- Efficiency: SEER ratings range from 15.5 to 20, with many models ENERGY STAR® certified and some earning the ENERGY STAR® Most Efficient 2022 designation.
- Features: This series includes single-stage and more powerful variable-speed air conditioners, maximizing cooling capacity while reducing energy costs.
- Technology Compatibility: Select models support Humiditrol dehumidification and the iComfort smart thermostat. Noise-reducing features and the Quantum Coil are also available.
- Warranty: Warranty coverage is consistent with the Merit Series and does not exceed it.
Best: Dave Lennox Signature Collection
The Dave Lennox Signature Collection is the top-of-the-line series, delivering premium efficiency and advanced features.
- Efficiency: SEER ratings range from 21 to 26, and models are ENERGY STAR® certified, with some awarded ENERGY STAR® Most Efficient 2022.
- Features: Two-stage and variable-capacity air conditioners ensure very quiet operation. They come with a standard 10-year parts warranty (no registration required) and are compatible with the iComfort smart thermostat.
- Advanced Technologies: Includes Precise Comfort design, Quantum Coil, and integration with the Ultimate Comfort System, allowing seamless operation with Lennox’s premium HVAC products and accessories.
Model Breakdown and Comparison
Warranty and Overall Grades
acprices.ca calculates these grades using a proprietary algorithm, making it easy to compare models:
- Warranty Grades: Evaluate the terms and exclusions in the fine print, helping homeowners understand coverage without digging through dense documents.
- Overall Grades: Factor in efficiency, features, and warranty.
Note: A lower grade doesn’t mean a model is a poor choice. More affordable units will generally score lower, but they may still meet your needs perfectly. Higher-end models tend to score better, but they cost more and may not be ideal for every household—think of it like comparing a sports car to a minivan: the sports car may score higher in many aspects but isn’t always practical for an average family.
| Model | SEER Rating | ENERGY STAR | Compressor Type | Decibel Range (dB) | Warranty Grade | Overall Grade |
|---|---|---|---|---|---|---|
| SL28XCV | 28 | Yes | Variable Speed | 56–73 | A | A |
| EL23XCV | 22.4 | Yes | Variable Speed | 59–65 | A– | A |
| XC20 | 20 | Yes | Variable Speed | 65–77 | A– | A– |
| EL18XCV | 18 | Yes | Variable Speed | 72–76 | A– | A– |
| XC21 | 21 | Yes | Dual Stage | 69–73 | A | A– |
| ML18XC2 | 18 | Yes | Dual Stage | 75–75 | B+ | B+ |
| 16ACX | 18 | Yes | Dual Stage | 75–78 | B+ | B+ |
| EL17XC1 | 18.6 | Yes | Single Stage | 72–72 | A– | B+ |
| EL16XC1 | 17 | Yes | Single Stage | 71–75 | A– | B |
| ML17XC1 | 17 | Yes | Single Stage | 73–80 | B+ | B |
| ML14XC1 | 17 | Yes | Single Stage | 73–80 | B+ | B |
| XC13 | 16 | No | Single Stage | 74–76 | A– | B– |
| 13ACX | 13 | No | Single Stage | 76–79 | B+ | C |
Lennox Air Conditioner Model Reviews
Dave Lennox Signature Collection SL28XCV
The SL28XCV is Lennox’s flagship air conditioner, packed with all the brand’s top technologies, including Precise Comfort, which automatically adjusts airflow for optimal comfort. This variable-speed inverter unit has a SEER rating of 28, making it the most powerful and efficient Lennox air conditioner—but also the most expensive.
- Compressor: Variable-Speed
- SEER: 28
- ENERGY STAR® Certified: Yes
- Decibel Rating: As low as 56
- Tier: Premium
- Ideal For: Extremely hot climates with long summers, or homeowners who want the ultimate premium Lennox system with all available features and top-tier efficiency.
Note: This model is more powerful than most Canadian homes require, making it a bigger investment than necessary for milder climates.
Dave Lennox Signature Collection XC21
The XC21 is a two-stage (multi-stage) cooling system that offers more even and reliable cooling than single-stage units, though it’s less powerful than variable-speed alternatives. With a SEER of 21 and the ENERGY STAR Most Efficient 2022 designation, it’s a high-performing premium option compatible with Lennox technologies like Humiditrol and the iComfort smart thermostat, as well as SilentComfort technology for quieter operation.
- Compressor: Two-stage
- SEER: 21
- ENERGY STAR® Certified: Yes
- Decibel Rating: 69
- Tier: Premium
- Ideal For: Homeowners seeking efficient cooling for hotter regions.
Lacks Precise Comfort and Quantum Coil technology found in the SL28XCV.
Lennox Elite XC20
The XC20 is a mid-range variable-speed air conditioner offering precise temperature control, quiet operation, and strong energy efficiency. With a SEER of 20, it earned the ENERGY STAR Most Efficient 2022 designation and is compatible with the iComfort smart thermostat.
- Compressor: Variable-Speed
- SEER: 20
- ENERGY STAR® Certified: Yes
- Decibel Rating: As low as 65
- Tier: Mid
- Ideal For: Canadians seeking high efficiency, quiet operation, and variable-speed performance without paying top-tier premium prices.
Lennox Elite EL18XCV
The EL18XCV is another mid-range variable-speed unit with a SEER of 18, providing excellent efficiency at a slightly lower price than the XC20. It includes the Quantum Coil and iComfort compatibility.
- Compressor: Variable-Speed
- SEER: Up to 18
- ENERGY STAR® Certified: Yes
- Decibel Rating: As low as 70
- Tier: Mid
- Ideal For: Homeowners who want reliable, efficient cooling and superior moisture management for larger homes or warmer regions.
Lennox Elite EL16XC1
The EL16XC1 is a mid-range single-stage unit with a SEER of 17. It includes noise-reducing design features and the Quantum Coil, but it is not compatible with the iComfort smart thermostat.
- Compressor: Single-stage
- SEER: Up to 17
- ENERGY STAR® Certified: Yes
- Decibel Rating: As low as 71
- Tier: Mid
- Ideal For: Homeowners with moderate cooling needs who want high efficiency without premium features.
Lennox Elite XC13
The XC13 is the most basic mid-range unit, a single-stage system with a SEER of 15.5. It is not ENERGY STAR certified and lacks Lennox’s advanced features.
- Compressor: Single-stage
- SEER: Up to 15.5
- ENERGY STAR® Certified: No
- Decibel Rating: As low as 74
- Tier: Mid
- Ideal For: Smaller homes or milder climates, where affordability is a priority over advanced features or maximum efficiency.
Lennox Merit 16ACX
The 16ACX is the top-end model in the entry-level Merit series, a two-stage unit with ENERGY STAR certification and a SEER of 17. It pairs well with furnaces or air handlers for better humidity and temperature control.
- Compressor: Two-stage
- SEER: 17
- ENERGY STAR® Certified: Yes
- Tier: Low
- Ideal For: Budget-conscious homeowners who want a high-efficiency, reliable system with a little more capability than a standard entry-level unit.
Lennox Merit ML14XC1
The ML14XC1 is a single-stage Merit series unit with a SEER of 17 and ENERGY STAR certification. It includes the Quantum Coil for corrosion resistance, making it one of Lennox’s most affordable yet durable options.
- Compressor: Single-stage
- SEER: Up to 17
- ENERGY STAR® Certified: Yes
- Decibel Rating: 73
- Tier: Low
- Ideal For: Homeowners seeking reliable Lennox quality and energy savings without a premium price tag.
Lennox Merit 13ACX
The 13ACX is Lennox’s most basic and affordable air conditioner. It has a single-stage compressor, SEER of 13, and no ENERGY STAR certification.
- Compressor: Single-stage
- SEER: Up to 13
- ENERGY STAR® Certified: No
- Decibel Rating: As low as 76
- Tier: Low
- Ideal For: Smaller homes or mild climates where affordability is more important than high efficiency or advanced features.
Discontinued Lennox Air Conditioners
Dave Lennox Signature Collection XC25
- SEER: 26
- Type: Variable-capacity
- ENERGY STAR® Certified: Yes
- Tier: Premium
Dave Lennox Signature Collection SL18XC1
- SEER: 18.5
- Type: Single-stage
- ENERGY STAR® Certified: Yes
- Tier: Premium
Lennox Elite XC16
- SEER: 17.2
- Type: Multi-stage
- ENERGY STAR® Certified: Yes
- Tier: Mid
Lennox’s Quietest Air Conditioners
A quiet home is an essential part of comfort, and Lennox has put considerable effort into designing air conditioners that operate silently—especially in their premium models.
Lennox achieves reduced noise levels in a few ways:
- Variable-Speed Compressors: These naturally run quieter because they operate at lower speeds with gradual changes, unlike single- or two-stage compressors.
- SilentComfort Technology: Found in Dave Lennox Signature Collection units, this includes vibration-resistant components, specially shaped fan blades to improve airflow while reducing noise, and thick insulation to dampen operational sounds.
Examples of Lennox’s Quietest Air Conditioners
| Model | Operation Noise | Sound Comparison |
|---|---|---|
| SL28XCV (Dave Lennox Signature Collection) | As low as 56 dB | Quieter than a normal conversation |
| XC20 (Lennox Elite) | As low as 65 dB | About as loud as laughter |
| XC21 (Dave Lennox Signature Collection) | As low as 69 dB | Quieter than average office noise |
Premium Lennox units combine quiet operation with high efficiency, making them ideal for homeowners who value both comfort and low noise levels.
Exclusive Features from Lennox
Lennox offers a range of proprietary features designed to enhance comfort, efficiency, and reliability. Here’s a breakdown of the key technologies:
1. Humiditrol
What Lennox says: "Home comfort and air quality that you can actually feel."
In plain language: Humiditrol is a whole-home dehumidification system that integrates with Lennox air conditioners to remove up to 150 liters of moisture per day, improving comfort and energy efficiency.
Why it matters: High indoor humidity can make your home harder to cool, increase energy bills, and cause damage to wood or encourage mold growth. Humiditrol effectively addresses these issues.
Comparison: Many brands offer similar whole-home dehumidification, including Carrier, Trane, Amana, and Goodman, but Humiditrol can remove more moisture when paired with the right system components.
2. SilentComfort Technology
What Lennox says: "Reduces operating noise so you can rest peacefully."
In plain language: SilentComfort combines several design elements to reduce AC noise:
- Special fan motor with electronic sensors
- Vibration-resistant components
- Specially designed fan blades
- Thicker insulation
Why it matters: It makes Lennox units, especially premium models, among the quietest on the market.
Comparison: Other manufacturers, such as Carrier (Silencer System II), also offer noise-reducing technologies, often achieving similar or even lower decibel levels.
3. iComfort Smart Thermostat
What Lennox says: "A smart thermostat that optimizes the efficiency and performance of your furnace and air conditioner."
In plain language: The iComfort smart thermostat allows remote control of your system via Wi-Fi, with features like:
- Geofencing
- Learning capabilities
- Automatic fan adjustments based on air quality
- Smart home integration and maintenance reminders
Comparison: Other brands such as Trane, Daikin, and Carrier offer smart thermostats with comparable features.
4. Ultimate Comfort System
What Lennox says: "An intelligent whole-home comfort system for consistent, clean air."
In plain language: This system integrates top-tier Lennox products, including:
- Variable-speed furnace
- SL28XCV air conditioner
- iComfort S30 thermostat
- iHarmony zoning system
- PureAir S air purifier
Why it matters: Offers optimized performance and efficiency, but it’s a premium investment that may exceed the needs of most Canadian homes.
5. Quantum Coil
What Lennox says: "An exclusive coil designed for superior performance and energy savings."
In plain language: The Quantum Coil is made from a proprietary aluminum alloy, resistant to rust and corrosion, improving energy efficiency and durability.
Comparison: Other brands like American Standard, Trane, and Armstrong also use special coil materials to enhance longevity and performance.
6. PermaGuard Cabinets
What Lennox says: "Provides long-lasting protection from corrosion and rust."
In plain language: PermaGuard includes:
- Heavy-gauge, galvanized steel cabinet
- Coil guard
- Zinc-coated steel base
- Baked-on powder paint finish
Why it matters: Outdoor AC units face harsh weather conditions, especially Canadian winters. PermaGuard ensures durability and protects internal components.
Comparison: Carrier’s WeatherArmor Protection and Bryant’s DuraGuard™ Plus provide similar cabinet protection.
Lennox Warranty Analysis
Lennox air conditioners come with series-specific warranty coverage, and extended warranties are available with registration.
Standard Warranty Terms
| Series | Parts Warranty | Compressor Warranty |
|---|---|---|
| Merit | 5 years | 5 years |
| Elite | 5 years | 10 years |
| Signature | 10 years | 10 years |
Optional: Comfort Shield Labor Warranty covers labor costs for repairs via a third-party provider.
Extended Warranty (Registration Required)
You can register your system within 60 days of installation to access extended coverage via Warranty Your Way.
| Series | Registered Option 1 | Registered Option 2 |
|---|---|---|
| Merit | 10-year parts & compressor | 7-year parts & compressor + 3-year labor |
| Elite | 10-year parts & compressor | 10-year compressor, 7-year parts + 3-year labor |
| Signature | 12-year parts & compressor | 10-year parts & compressor + 3-year labor |
How to register: Online or by phone, providing the air conditioner’s serial/model number, installation date, and contact details.
Conditions to Keep the Warranty Valid
- Installation must be performed by a licensed HVAC professional
- Annual maintenance must be done by a licensed professional and documented
- Only compatible Lennox HVAC components should be installed
How the Lennox Warranty Measures Up to the Competition
Many homeowners assume that paying a premium for a high-end air conditioner guarantees the best warranty protection. However, Lennox’s warranty coverage is standard for the industry, and several other brands—even more affordable ones—offer stronger protection.
For example:
- York and Goodman, both economy brands, provide lifetime compressor warranties on select models.
- Daikin, American Standard, and Trane offer similar 12-year registered parts and compressor warranties for their top-tier units.
- Some brands, including Goodman, KeepRite, Amana, Daikin, Rheem, and even Carrier, have introduced unit replacement warranties, which replace the air conditioner if the compressor fails during the coverage period.
Unique Advantage: Lennox’s Warranty Your Way program is one standout feature—it allows homeowners to choose between extending parts/compressor coverage or adding a labor warranty, which isn’t offered by any other brand.
Is a Lennox Air Conditioner Right for You?
1. Consider Your Budget
Lennox air conditioners are among the most expensive on the market, typically ranging from $3,000 to $7,500+, depending on the model, tier, and size.
While Lennox is known for quality, durability, and high efficiency, there are more affordable alternatives that still offer excellent performance, such as:
- Mid-range: Daikin, Amana
- Entry-level: York, Goodman
2. How Long Will You Stay in Your Home?
If you plan to move within a few years, a high-end Lennox unit may not be worth the investment. Energy savings and warranty coverage benefits are better realized over the long term.
High-end HVAC systems generally do not add substantial resale value, so if you plan to sell soon, a more affordable brand may be a better choice.
3. SEER Ratings: Find the Right Efficiency
Lennox offers SEER ratings from 13 to 28, covering standard to ultra-high efficiency. ENERGY STAR-certified units offer higher energy savings and potential rebate eligibility.
Tip for Canadians: The ideal SEER range for most of Canada is 16–18. Units below this may not save much on energy, while extremely high SEER models could be more costly than the savings they provide.
4. Feature Set: What Matters to You?
Lennox offers several exclusive features, including:
- Quantum Coil – corrosion-resistant coil for efficiency and durability
- PermaGuard Cabinets – weatherproof outdoor cabinets
- iComfort Smart Thermostat – Wi-Fi-enabled, programmable, and energy-saving
- Humiditrol – whole-home dehumidification
- SilentComfort – noise-reducing technology
Other brands may offer similar or even unique technologies Lennox does not provide:
- Self-diagnostics – Amana, Goodman
- Antimicrobial components – Armstrong
- Custom climate settings – York, Coleman, Luxaire
- Special compressors – Goodman, Trane, Rheem
- Built-in touchscreen monitors – Luxaire, Coleman
5. Warranty Concerns
While Lennox doesn’t offer the most comprehensive coverage, the Warranty Your Way program is a notable perk.
If long-term protection is a priority, consider other brands as well: York, Trane, KeepRite, Amana, Goodman, Rheem, Daikin, and American Standard.
Important: Regardless of brand, warranties require:
- Professional installation
- Annual professional maintenance
6. Beyond the Brand Name
While Lennox is a premium brand, the actual performance often depends more on the HVAC contractor than the brand itself.
A professional contractor can:
- Help choose a system compatible with your existing HVAC equipment
- Properly size and install your air conditioner
- Ensure optimal operation and efficiency
- Provide ongoing maintenance and emergency service
- Assist with integrating smart devices or air purification systems
Tip: Many HVAC brands, including Lennox, share manufacturing companies with other, more affordable brands like Armstrong.
Lennox Add-ons and Extras
Programmable Thermostats
- Create temperature schedules for different times and days
- Features include energy reporting, maintenance reminders, home/away modes, and dual fuel operation
- Not Wi-Fi enabled, but still saves energy
Zoning Systems
- Program different temperatures for different areas of your home
- Ideal for large homes, sunrooms, or rarely used spaces
Air Purifiers
- Remove dust, pollen, smoke, pathogens, VOCs, and more
- Great for allergy or asthma sufferers
- Lennox offers media filters, HEPA filters, and UV germicidal lights
Humidifiers & Dehumidifiers
- Address moisture problems: too much or too little moisture
- Lennox products include Humiditrol and Healthy Climate systems
Heat & Energy Recovery Ventilators (HRVs & ERVs)
- Provide fresh air without straining your HVAC system
- HRVs are ideal for cold climates; ERVs are better for humid winters
About Lennox
Founded by Dave Lennox in 1895, Lennox started as a furnace manufacturer and has grown into a trusted provider of air conditioners and full HVAC systems.
Known for quality, dependability, and efficiency, Lennox continues to be a top choice for Canadian homeowners seeking premium comfort solutions.
Want a quote? Fill out an online form to get a free, no-obligation quote from a Lennox representative.
Lennox FAQs
1. How long will a Lennox air conditioner last?
- Average lifespan: 10–12 years
- Proper installation, annual maintenance, and prompt repairs maximize performance
2. Is Lennox better than Carrier?
- Both brands are comparable in price, efficiency, model options, and quality
- Lennox offers a few unique features, but overall performance is similar
3. How does Lennox compare to Trane?
- Both are premium brands with high-efficiency, quiet operation models
- Choosing the right model and professional installation matters more than brand
4. Should I buy a Lennox air conditioner?
- Ideal for homeowners who want high-efficiency, quality, and brand reputation
- Consider budget, features, warranty, and whether you’ll stay long enough to enjoy energy savings
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