Lennox
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Price Snapshot: Premium to ultra-premium; among the priciest in residential HVAC.
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Product Focus: Standout AC/Heat Pump efficiency and high-AFUE furnaces; very quiet flagships.
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Best For: Efficiency-first and noise-sensitive buyers who want top-tier comfort.
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What Stands Out: Polished inverter systems and refined smart controls (very even temps, low noise).
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Before You Buy: Match the right series to climate; proprietary controls work best with trained dealers.
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Warranty/Dealer: Competitive parts coverage; strong dealer network; confirm labor options and registration.
Carrier
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Price Snapshot: Mid-to-premium; usually pricier than value brands, below ultra-luxury tiers.
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Product Focus: Full lineup across Furnace, Central AC, and Air-Source Heat Pump (strong inverter options).
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Best For: Buyers who want very even temperatures and low noise with brand-name dealer support.
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What Stands Out: Polished smart thermostat ecosystem that works tightly with variable-speed systems.
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Before You Buy: Match the series to climate (consider cold-climate heat pump models where winters are harsh).
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Warranty/Dealer: Broad U.S. dealer network; parts coverage is solid; confirm labor options with your installer.
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Carrier HVAC
Founded in 1902 by Willis Carrier - the man credited with inventing modern air conditioning - Carrier is one of the most recognized HVAC names worldwide. In my years working with residential ducted systems, Carrier has consistently delivered a balance of innovation, comfort, and durability. The Infinity® series is their flagship line, offering top-tier performance with advanced control systems, variable-speed technology, and strong energy efficiency.
For this review, I’m focusing on three standout products that represent Carrier’s engineering strengths in each major residential ducted category:
- Infinity® 98 Gas Furnace with Greenspeed® Intelligence (59MN7) – Carrier’s most advanced furnace for precise heating.
- Infinity® 26 Air Conditioner (24VNA6) – a flagship AC designed for superior cooling and humidity control.
- Infinity® 24 Heat Pump with Greenspeed® Intelligence (25VNA4) – a versatile year-round option for both heating and cooling.
These units are selected not just for their place at the top of the spec sheet, but because they’ve proven themselves in actual homes, backed by both my field experience and consistent customer feedback.
Lennox HVAC
Among the major names in HVAC, Lennox stands out for its long heritage and reputation for pushing the limits of efficiency. For this review, I focused on three cornerstone products that reflect the brand’s residential ducted portfolio: the SLP99V Gas Furnace, the SL28XCV Variable-Capacity Air Conditioner, and the XP25 Variable-Capacity Heat Pump. Together, these models showcase what Lennox brings to homeowners who demand consistent comfort, low energy bills, and technology that balances innovation with real-world reliability. Over years of field testing and speaking with homeowners, I’ve seen both the strengths and the areas where Lennox could improve, and this review reflects that balance.
