When it comes to keeping your home cool, comfortable, and energy-efficient during the sweltering summer months, few investments are as critical—or as complex—as choosing the right air conditioning system. Among the top-tier brands in the HVAC industry, Carrier has long stood out for its innovation, reliability, and commitment to advanced climate control technology. Their Infinity series, in particular, represents the pinnacle of residential air conditioning, combining cutting-edge engineering with intelligent design to deliver superior performance, whisper-quiet operation, and exceptional energy savings.
But with a range of models, features, and technical specifications to consider, selecting the right Carrier Infinity AC unit can feel overwhelming—even for experienced homeowners. That’s where this comprehensive buying guide comes in. Whether you’re replacing an aging system, building a new home, or simply upgrading to a smarter, more efficient cooling solution, this guide is designed to cut through the noise and help you make a confident, informed decision. You’ll learn how to evaluate key factors like SEER ratings, variable-speed technology, zoning capabilities, and smart home integration, all while understanding what truly matters for your unique needs and budget.
The market for high-efficiency air conditioners has evolved rapidly over the past decade, driven by stricter energy regulations, rising electricity costs, and growing consumer demand for sustainable living solutions. Carrier has responded with a robust lineup of Infinity models that not only meet but exceed modern efficiency standards. From the Infinity 20 to the Infinity 24 and beyond, these systems offer a blend of performance, durability, and smart features that set them apart from mid-tier competitors. However, with prices ranging from several thousand to over ten thousand dollars depending on capacity and configuration, it’s essential to understand what you’re paying for—and whether it aligns with your long-term goals. This guide will walk you through every step of the decision-making process, ensuring you choose a system that delivers comfort, savings, and peace of mind for years to come.
What to Look for When Buying Buying Guide
1. Budget & Price Range
One of the first and most important considerations when shopping for a Carrier Infinity air conditioner is your budget. These systems are premium products, and their price reflects the advanced technology and long-term value they deliver. On average, a complete Carrier Infinity AC installation—including the outdoor unit, indoor coil, labor, and any necessary ductwork modifications—can range from $6,000 to $12,000 or more, depending on the model, tonnage, and regional labor costs. While this may seem steep compared to standard units, it’s crucial to view the purchase as a long-term investment rather than a short-term expense.
The higher upfront cost is often justified by significantly lower energy bills, reduced maintenance needs, and extended system lifespan. For example, a Carrier Infinity 20 with a 20 SEER2 rating can reduce cooling costs by up to 50% compared to older 10 SEER systems. Additionally, many homeowners qualify for federal tax credits, utility rebates, or financing options that can offset initial costs. When setting your budget, consider not just the sticker price but also potential savings over time. A unit that costs $2,000 more upfront but saves $300 annually on electricity will pay for itself in under seven years—and continue delivering value for the remaining 15–20 years of its life.
2. Performance Specifications
Performance is where the Carrier Infinity series truly shines. The most critical performance metric to evaluate is the Seasonal Energy Efficiency Ratio (SEER2), which measures how efficiently the unit converts electricity into cooling over an entire season. Carrier Infinity models typically range from 19 SEER2 to 26 SEER2, placing them among the most efficient residential air conditioners available. Higher SEER2 ratings mean greater energy savings, especially in hot climates where the AC runs frequently.
Another key specification is tonnage, which refers to the cooling capacity of the unit. Tonnage is measured in tons (1 ton = 12,000 BTUs), and selecting the right size is essential for both comfort and efficiency. An undersized unit will struggle to cool your home, leading to constant running and premature wear. An oversized unit will cycle on and off too frequently, wasting energy and failing to properly dehumidify the air. A professional load calculation—based on square footage, insulation, window orientation, and local climate—is the only reliable way to determine the correct tonnage for your home.
Beyond SEER2 and tonnage, look for features like variable-speed compressors and two-stage or multi-stage operation. The Carrier Infinity series often includes Greenspeed Intelligence, which uses a variable-speed compressor to adjust cooling output in precise increments. This not only improves comfort by maintaining consistent temperatures but also reduces energy use and noise levels. Additionally, check the unit’s sound rating, measured in decibels (dB). Many Infinity models operate at 58 dB or lower—quieter than a normal conversation—making them ideal for bedrooms and quiet outdoor spaces.
3. Build Quality & Durability
When investing in a high-end air conditioning system, durability is non-negotiable. Carrier has built a reputation for manufacturing robust, long-lasting equipment, and the Infinity series is no exception. These units are constructed with heavy-gauge, galvanized steel cabinets that resist rust and corrosion, even in humid or coastal environments. The coils are often protected by advanced coatings like WeatherShield or ArmorCoat, which extend lifespan by preventing damage from salt, moisture, and debris.
Internally, Infinity models feature high-quality components such as scroll compressors, which are more reliable and efficient than traditional reciprocating compressors. The fan motors are typically ECM (electronically commutated motors), which are not only more energy-efficient but also quieter and longer-lasting than standard PSC motors. Additionally, many Infinity units include protective features like compressor sound blankets, coil guards, and diagnostic systems that alert homeowners to potential issues before they become serious problems.
It’s also worth noting that Carrier backs its Infinity line with some of the best warranties in the industry. Most models come with a 10-year parts warranty and a 10-year compressor warranty when registered within 90 days of installation. Some units even qualify for extended warranties or labor coverage through participating dealers. This level of support reflects Carrier’s confidence in the product’s durability and gives homeowners peace of mind knowing their investment is protected.
4. Features & Functionality
The Carrier Infinity series is packed with advanced features that go beyond basic cooling. One of the standout innovations is the integration of smart home technology. Many Infinity models are compatible with the Carrier Infinity Touch Control thermostat, a Wi-Fi-enabled device that allows you to monitor and adjust your system remotely via a smartphone app. This enables precise scheduling, energy usage tracking, and even geofencing—automatically adjusting the temperature when you leave or return home.
Another key feature is zoning capability. Unlike traditional systems that cool the entire house uniformly, zoned systems use motorized dampers in the ductwork to direct air only to occupied areas. When paired with a Carrier Infinity AC and compatible thermostat, this can significantly improve comfort and efficiency. For example, you can keep the main living areas cool during the day and the bedrooms comfortable at night without wasting energy on unused spaces.
Other notable features include advanced filtration systems, such as the Carrier Infinity Air Purifier, which uses electrically charged filters to capture allergens, bacteria, and viruses. Some models also offer humidity control, which is especially valuable in humid climates where excessive moisture can make indoor air feel sticky and uncomfortable. Additionally, many Infinity units are designed for compatibility with heat pumps, allowing for year-round climate control with a single system.
5. Brand Reputation
Carrier is one of the most trusted names in the HVAC industry, with a history dating back to 1915 when it was founded by Willis Carrier, the inventor of modern air conditioning. Over the past century, the company has consistently pushed the boundaries of innovation, introducing technologies like the first residential central air system and the first high-efficiency variable-speed compressor. This legacy of excellence is reflected in the quality and performance of the Infinity series.
Beyond its technical achievements, Carrier is known for its strong dealer network and customer support. Authorized Carrier dealers undergo rigorous training and certification, ensuring they have the expertise to properly size, install, and service Infinity systems. This is critical, as improper installation can reduce efficiency by up to 30% and void warranties. Additionally, Carrier offers extensive online resources, including product manuals, troubleshooting guides, and a customer service hotline staffed by knowledgeable representatives.
Consumer reviews and industry awards further reinforce Carrier’s reputation. The Infinity series frequently earns top marks from organizations like ENERGY STAR and J.D. Power, and many homeowners report high satisfaction with performance, reliability, and energy savings. While no brand is perfect, Carrier’s consistent performance and commitment to quality make it a safe and reliable choice for discerning buyers.
6. Warranty & Support
A comprehensive warranty is a strong indicator of a manufacturer’s confidence in its product, and Carrier delivers in this area. Most Infinity air conditioners come with a standard 10-year limited warranty on parts and a 10-year warranty on the compressor, provided the unit is registered within 90 days of installation. This is significantly better than the 5-year warranties offered by many competitors and reflects the durability of Carrier’s components.
Some dealers also offer extended labor warranties, which cover the cost of repairs for an additional 1–5 years. While this adds to the upfront cost, it can save hundreds or even thousands of dollars in potential repair bills. Additionally, Carrier’s warranty registration process is straightforward and can often be completed online. It’s important to note that warranties are typically voided if the unit is installed by an unlicensed contractor or if maintenance is neglected, so always use certified professionals and follow the recommended service schedule.
Customer support is another strength of the Carrier brand. The company offers 24/7 technical support, online troubleshooting tools, and a nationwide network of authorized service providers. If an issue arises, most homeowners can expect a prompt response and professional resolution. For added peace of mind, consider enrolling in a maintenance plan through your dealer, which includes annual inspections, filter replacements, and priority service.
7. Size & Portability
While air conditioners are not typically considered portable appliances, the physical size and installation requirements of a Carrier Infinity unit are important factors to consider. These systems are designed for permanent outdoor installation, usually on a concrete pad in the backyard or side yard. The outdoor unit can range from 24 to 36 inches in width and height, depending on the model and tonnage, so adequate clearance is essential for proper airflow and maintenance access.
Indoor components, such as the air handler or furnace coil, are typically housed in a closet, attic, or basement. The size of these units will depend on your existing HVAC setup and whether you’re replacing a furnace or air handler. In some cases, ductwork modifications may be necessary to accommodate the new system, especially if upgrading from a lower-capacity unit.
It’s also important to consider noise levels and placement. While Infinity models are among the quietest on the market, placing the outdoor unit too close to a bedroom window or neighbor’s property can still cause disturbances. A professional installer will assess your property and recommend the optimal location to balance performance, noise, and aesthetics.
8. User Reviews & Ratings
User reviews provide valuable real-world insights that go beyond technical specifications. Across major review platforms like Google, Yelp, and HomeAdvisor, Carrier Infinity systems consistently receive high ratings, often averaging 4.5 to 5 stars. Homeowners frequently praise the units for their quiet operation, consistent cooling, and noticeable reduction in energy bills. Many also highlight the ease of use of the Infinity Touch thermostat and the responsiveness of Carrier’s customer service.
That said, some reviews mention challenges related to installation complexity and the need for experienced technicians. A few users report higher-than-expected costs, though this is often due to underestimating the full scope of the project, including ductwork and electrical upgrades. It’s also worth noting that satisfaction can vary by region and dealer, so researching local installers is just as important as evaluating the product itself.
When reading reviews, look for patterns rather than isolated complaints. If multiple users mention the same issue—such as difficulty scheduling service or inconsistent cooling—it may be a red flag. Conversely, repeated praise for reliability, efficiency, and comfort is a strong endorsement of the product’s quality.
Different Types of Buying Guide
Common Buying Mistakes to Avoid
❌ Mistake: Choosing Based on Price Alone
Why it’s bad: Opting for the cheapest available unit may save money upfront but often leads to higher energy bills, frequent repairs, and a shorter lifespan. Carrier Infinity systems are designed for long-term value, and cutting corners can undermine their benefits.
What to do instead: Focus on total cost of ownership, including energy savings, maintenance, and expected lifespan. Use online calculators to compare annual operating costs and payback periods.
❌ Mistake: Skipping the Load Calculation
Why it’s bad: Guessing the right tonnage or relying on square footage alone can result in an improperly sized system. This leads to poor performance, wasted energy, and discomfort.
What to do instead: Always request a Manual J load calculation from a certified HVAC contractor. This detailed assessment considers insulation, windows, orientation, and local weather to determine the correct size.
❌ Mistake: Ignoring Installation Quality
Why it’s bad: Even the best air conditioner will underperform if installed incorrectly. Poor ductwork, incorrect refrigerant charge, or improper electrical connections can reduce efficiency and damage the unit.
What to do instead: Hire a licensed, Carrier-authorized dealer with positive reviews and proper certifications. Ask about their installation process and warranty coverage.
❌ Mistake: Overlooking Smart Features
Why it’s bad: Many buyers focus solely on cooling power and miss out on features like remote control, energy monitoring, and zoning that enhance comfort and savings.
What to do instead: Evaluate how smart thermostats and zoning can improve your daily experience. Consider future-proofing your system for smart home integration.
❌ Mistake: Neglecting Maintenance
Why it’s bad: High-efficiency systems require regular maintenance to perform optimally. Skipping filter changes or annual inspections can lead to reduced airflow, higher bills, and premature failure.
What to do instead: Follow the manufacturer’s maintenance schedule and consider a service plan. Clean or replace filters every 1–3 months and schedule professional tune-ups annually.
❌ Mistake: Not Checking Rebates and Incentives
Why it’s bad: Many homeowners miss out on thousands of dollars in available rebates, tax credits, and financing options that can significantly reduce the net cost.
What to do instead: Research federal, state, and utility incentives before purchasing. Use tools like the ENERGY STAR rebate finder or consult your dealer for guidance.
Budget Guidelines: How Much Should You Spend?
Entry-Level ($6,000 – $7,500): This tier includes models like the Infinity 19, which offer solid efficiency and core features at a more accessible price point. Ideal for smaller homes or those on a tighter budget who still want Carrier quality and reliability.
Mid-Range ($7,500 – $9,500): The sweet spot for most homeowners, this range includes the Infinity 20 and select zoned systems. These units deliver excellent energy savings, quiet operation, and smart features, making them a great balance of performance and value.
Premium ($9,500 – $12,000): For those seeking top-tier efficiency and advanced technology, this tier includes the Infinity 24 and Greenspeed models. These systems are perfect for large homes, hot climates, or eco-conscious buyers who prioritize long-term savings.
Luxury ($12,000+): The highest tier includes fully zoned systems with multiple thermostats, integrated air purification, and full smart home integration. These setups offer maximum comfort, control, and energy efficiency for discerning homeowners.
Expert Tips for Getting the Best Deal
- Buy in the Off-Season: Spring and fall are ideal times to purchase, as demand is lower and dealers often offer promotions to boost sales.
- Bundle with Other Upgrades: Installing a new furnace, air handler, or ductwork at the same time can reduce overall labor costs.
- Negotiate Installation Fees: Many dealers are willing to adjust labor costs, especially if you’re purchasing multiple components.
- Check for Manufacturer Rebates: Carrier frequently offers seasonal rebates of $300–$1,000 on Infinity models.
- Use Financing Options: Many dealers offer 0% APR financing for 12–24 months, making high-end systems more affordable.
- Get Multiple Quotes: Compare at least three detailed proposals to ensure you’re getting fair pricing and proper scope of work.
- Ask About Maintenance Plans: Some dealers include free first-year maintenance or discounted service contracts with new installations.
Frequently Asked Questions
Q: How long do Carrier Infinity air conditioners last?
A: With proper maintenance, Carrier Infinity units typically last 15–20 years. The compressor and major components are built to withstand years of use, and the 10-year warranty provides added protection.
Q: Are Carrier Infinity systems worth the extra cost?
A: For most homeowners, yes. The energy savings, comfort improvements, and advanced features often justify the higher upfront investment, especially in hot climates or larger homes.
Q: Can I install a Carrier Infinity AC myself?
A: No. These systems require licensed HVAC professionals for proper installation, refrigerant handling, and warranty validation. DIY installation voids the warranty and can be dangerous.
Q: Do I need a new thermostat with a Carrier Infinity system?
A: While not always required, pairing your Infinity AC with the Infinity Touch thermostat unlocks full functionality, including remote access, zoning, and energy monitoring.
Q: Are Carrier Infinity units ENERGY STAR certified?
A: Yes, all Infinity models meet or exceed ENERGY STAR requirements, making them eligible for rebates and tax credits in many areas.
Q: How quiet are Carrier Infinity air conditioners?
A: Most models operate at 58 dB or lower—quieter than a normal conversation—making them ideal for quiet neighborhoods and bedroom areas.
Q: Can I add zoning to an existing Carrier Infinity system?
A: Yes, zoning can often be added later, though it requires installing dampers in the ductwork and upgrading to a compatible thermostat.
Q: What maintenance is required?
A: Regular filter changes, annual professional inspections, and keeping the outdoor unit clear of debris are essential. Most homeowners should schedule service once per year.
Our Final Recommendations
Best for Budget-Conscious Buyers: Carrier Infinity 19 – Offers excellent efficiency and core Infinity features at a more accessible price point.
Best Overall Value: Carrier Infinity 20 – Delivers top-tier SEER2 rating, quiet operation, and smart features for the best balance of performance and cost.
Best Premium Option: Carrier Infinity 24 with Greenspeed Intelligence – The ultimate in efficiency and precision cooling for large homes and hot climates.
Best for Beginners: Carrier Infinity 20 with Infinity Touch Thermostat – User-friendly interface and reliable performance make it ideal for first-time buyers.
Best for Advanced Users: Carrier Infinity with Full Zoning and Air Purification – Maximum control, comfort, and air quality for tech-savvy homeowners.
Conclusion: Making the Right Choice
Choosing a Carrier Infinity air conditioner is a significant decision that impacts your home’s comfort, energy use, and long-term value. By understanding key factors like efficiency, size, features, and installation quality, you can navigate the options with confidence. Remember, the best system isn’t always the most expensive—it’s the one that aligns with your specific needs, budget, and lifestyle.
Take the time to consult with certified professionals, compare quotes, and evaluate your home’s unique requirements. With the right Carrier Infinity system, you’ll enjoy years of reliable cooling, lower energy bills, and peace of mind knowing you’ve made a smart investment in your home’s future.