Is MrCool AC Better Than Lennox? A Comprehensive DIY Guide

When it comes to choosing between MrCool and Lennox air conditioning systems for a DIY user with advanced hands-on skills, there are several technical factors to consider. This comprehensive guide will dive deep into the nitty-gritty details and specifications to help you make an informed decision.

Product Line Comparison

MrCool Product Line:
– MrCool is known for its extensive DIY product line, offering a wide range of ductless mini-split systems, packaged units, and even window air conditioners.
– Their DIY-friendly systems are designed with the advanced DIY user in mind, providing easy installation and maintenance.
– MrCool’s product lineup includes single-zone, multi-zone, and even ducted mini-split systems, catering to various home and commercial applications.

Lennox Product Line:
– Lennox is a premium HVAC brand with a reputation for quality and innovation in their product offerings.
– Their mini-split systems are known for their advanced features, such as inverter technology, zoning capabilities, and high-efficiency performance.
– Lennox’s product line includes a wide range of central air conditioners, heat pumps, furnaces, and air handlers, in addition to their mini-split systems.

– MrCool’s DIY-focused product line is more accessible and appealing to advanced DIY users, while Lennox caters to a more premium market with their high-end systems.
– Lennox’s product range is more comprehensive, covering a broader spectrum of HVAC solutions, whereas MrCool specializes in ductless and mini-split systems.

Noise Level Comparison

is MrCool AC better  than LennoxImage source: nan

MrCool Noise Levels:
– MrCool systems are designed with noise reduction in mind, utilizing advanced compressor technology and sound-dampening materials.
– The outdoor units of MrCool systems typically operate at noise levels ranging from 52 dB to 58 dB, which is considered relatively quiet for ductless air conditioners.
– The indoor units of MrCool mini-splits are also designed to be whisper-quiet, with noise levels as low as 19 dB in some models.

Lennox Noise Levels:
– Lennox is known for producing some of the quietest HVAC systems on the market, with their mini-split systems being no exception.
– Lennox’s outdoor units typically operate at noise levels between 55 dB to 65 dB, depending on the model and capacity.
– The indoor units of Lennox mini-splits are also designed for low noise operation, with some models achieving noise levels as low as 22 dB.

– Both MrCool and Lennox offer quiet operation, with MrCool systems generally being slightly quieter than Lennox’s offerings.
– The noise levels of both brands are well within the acceptable range for residential and commercial applications, providing a comfortable indoor environment.

Efficiency Comparison

MrCool Efficiency:
– MrCool’s ductless mini-split systems are designed to be energy-efficient, with SEER (Seasonal Energy Efficiency Ratio) ratings ranging from 16 to 22.
– Their top-of-the-line models, such as the MrCool DIY Olympus series, can achieve SEER ratings as high as 22, which is considered highly efficient.
– MrCool’s systems utilize advanced inverter technology, allowing for precise temperature control and improved energy savings.

Lennox Efficiency:
– Lennox is known for producing some of the most efficient HVAC systems on the market, including their mini-split offerings.
– Lennox’s mini-split systems typically have SEER ratings ranging from 18 to 24, with their premium models reaching up to 24 SEER.
– Lennox’s systems incorporate advanced features like variable-speed compressors and dual-stage heating and cooling, further enhancing their energy efficiency.

– While Lennox systems generally have a slight edge in terms of efficiency, with SEER ratings up to 24, MrCool’s top-tier models can match or even exceed Lennox’s efficiency levels.
– Both brands offer highly efficient systems, with the choice ultimately depending on your specific energy-saving requirements and budget.

Warranty Comparison

MrCool Warranty:
– MrCool offers a range of warranty coverage on their products, but the specifics may vary depending on the model and installation method.
– For their DIY-installed systems, MrCool typically provides a 5-year warranty on parts and a 7-year warranty on the compressor.
– For professionally installed MrCool systems, the warranty coverage may be extended, with some models offering a 10-year warranty on parts and a 12-year warranty on the compressor.

Lennox Warranty:
– Lennox is known for its comprehensive warranty coverage, which is often considered one of the best in the industry.
– Lennox’s Registered Limited Warranty provides 10-year parts coverage for their entry-level mini-split models, and up to 20-year coverage on their premium systems.
– The warranty also includes a 10-year compressor warranty, ensuring long-lasting performance and peace of mind for the homeowner.

– Lennox’s warranty coverage is generally more extensive and longer-lasting compared to MrCool’s offerings, especially for their professionally installed systems.
– MrCool’s warranty, while still providing decent coverage, may not match the level of protection offered by Lennox’s Registered Limited Warranty.

Zoning Capabilities Comparison

MrCool Zoning Capabilities:
– MrCool’s ductless mini-split systems are often rebranded versions of Daikin’s products, which are known for their advanced zoning capabilities.
– Daikin (and by extension, MrCool) mini-split systems can typically serve up to 8 individual zones, allowing for precise temperature control in different areas of the home or building.
– MrCool’s multi-zone systems offer the flexibility to customize the cooling and heating needs of each zone, improving overall comfort and energy efficiency.

Lennox Zoning Capabilities:
– Lennox’s mini-split systems are designed to serve up to 5 individual zones, providing a high degree of zoning control.
– Lennox’s zoning capabilities allow for independent temperature and airflow adjustments in each zone, ensuring optimal comfort and energy savings.
– Lennox’s zoning systems can be integrated with their advanced thermostat and control systems, further enhancing the user experience.

– While both MrCool and Lennox offer impressive zoning capabilities, MrCool’s systems, being based on Daikin technology, can serve up to 8 zones, providing a slightly more extensive zoning solution.
– Lennox’s zoning capabilities, though slightly more limited, are still highly effective and can meet the needs of most residential and light commercial applications.

Installation and Support Comparison

MrCool Installation and Support:
– MrCool’s systems are designed with the DIY user in mind, offering straightforward installation processes and comprehensive installation guides.
– MrCool provides detailed step-by-step instructions, as well as online resources and video tutorials to assist DIY users throughout the installation process.
– However, MrCool’s customer support and technical assistance may be more limited compared to Lennox, as they cater primarily to the DIY market.

Lennox Installation and Support:
– Lennox systems are typically installed by professional HVAC contractors, as the installation process may be more complex compared to MrCool’s DIY-friendly systems.
– Lennox offers extensive training and support for their network of authorized dealers, ensuring high-quality installations and ongoing maintenance.
– Lennox’s customer support team is known for their responsiveness and expertise, providing technical assistance and troubleshooting guidance to both homeowners and contractors.

– MrCool’s DIY-focused approach makes their systems more accessible and cost-effective for advanced DIY users with the necessary skills and tools.
– Lennox’s systems may require professional installation, but they offer a more comprehensive support network and customer service experience, which can be beneficial for homeowners who prefer a more hands-off approach.

Cost Comparison

MrCool Cost:
– MrCool’s ductless mini-split systems are generally more affordable compared to Lennox’s offerings, making them an attractive option for budget-conscious consumers.
– The cost of a MrCool DIY-installed system can be significantly lower than a professionally installed Lennox system, as the DIY installation eliminates the labor costs.
– MrCool’s entry-level models start at around $1,500 to $2,500 for a single-zone system, while their higher-end multi-zone systems can range from $3,000 to $6,000.

Lennox Cost:
– Lennox’s mini-split systems are typically more expensive than MrCool’s, reflecting the premium quality and advanced features of their products.
– The cost of a Lennox mini-split system, including professional installation, can range from $3,000 to $8,000 or more, depending on the size, capacity, and number of zones.
– Lennox’s higher-end models with advanced features and higher efficiency ratings tend to be on the more expensive end of the spectrum.

– MrCool’s systems are generally more budget-friendly, making them a viable option for DIY users with a tighter budget.
– Lennox’s systems, while more expensive, offer a premium experience with advanced features, higher efficiency, and better warranty coverage, which may be worth the investment for some homeowners.


In conclusion, when it comes to choosing between MrCool and Lennox air conditioning systems for a DIY user with advanced hands-on skills, there are several key factors to consider. MrCool offers a more budget-friendly and DIY-friendly option, while Lennox provides a more premium and supported experience. The choice ultimately depends on your specific needs, budget, and technical expertise. By carefully evaluating the product lines, noise levels, efficiency, warranty coverage, zoning capabilities, installation and support, and cost, you can make an informed decision that best suits your home or business requirements.

MrCool DIY Ductless Mini-Split Installation Guide
Lennox Mini-Split Systems Review
HVAC Forum Discussion: Trane vs. Goodman vs. Lennox vs. Carrier
Reddit Discussion: MrCool DIY Ductless Mini-Split Review
The New York Times Wirecutter Review: The Best Ductless Mini-Split Air Conditioner