
-
Price Snapshot: Mid to premium, depending on series and features.
-
Product Focus: Strong in Air-Source Heat Pumps and inverter tech; also offers furnaces and central AC.
-
Best For: All-electric or efficiency-focused homes that want variable-speed comfort and low noise.
-
What Stands Out: Mature inverter platforms, quiet outdoor units, and broad heat-pump expertise (including cold-climate lines).
-
Before You Buy: Use an installer experienced with inverter commissioning; check refrigerant platform and local code requirements.
-
Warranty/Dealer: Global brand with a growing U.S. network; verify local parts/service access and labor coverage.

-
Price Snapshot: Value-to-upper mid; typically a notch below ultra-premium pricing.
-
Product Focus: Full Furnace / AC / Heat Pump range with inverter and ECM options for quieter operation.
-
Best For: Homeowners prioritizing reliability and fair pricing with clean, modern comfort controls.
-
What Stands Out: Thoughtful serviceability (access panels, diagnostics) and Comfort Sync-style smart control on higher trims.
-
Before You Buy: Ensure a Manual J/S/D-driven install; pick inverter tiers if noise and even temperatures matter.
-
Warranty/Dealer: Competitive coverage via an established dealer network; confirm local parts availability and labor coverage.
Daikin HVAC
As the world’s largest HVAC manufacturer, Daikin brings a global engineering pedigree to the U.S. residential market. Known worldwide for its ductless mini-split systems, Daikin has also invested heavily in its residential ducted lineup, blending the reliability of American furnace traditions with advanced inverter-driven cooling and heating technologies.
For this review, I’m focusing on three flagship models from Daikin’s current catalog: the DM97MC Modulating Gas Furnace, the DX9VC Air Conditioner, and the DZ9VC Heat Pump. Together, they showcase how Daikin applies its international expertise—variable-speed compressors, precise modulation, and advanced comfort controls—to traditional U.S. home HVAC systems.
In my field experience, Daikin systems often appeal to tech-forward homeowners who value cutting-edge efficiency and smart features, but also want dependable heating and cooling that fits seamlessly into ducted homes.
Armstrong Air HVAC
Armstrong Air may not have the same name recognition as others, but among contractors, it’s known as a premium, professional-grade brand that combines Lennox engineering with its own innovations. Manufactured under Allied Air Enterprises, Armstrong Air benefits from Lennox’s R&D resources while carving out a niche as a contractor-preferred brand with strong support and durable products.
For this review, I’m focusing on three flagship products: the A97MV Modulating Gas Furnace, the SCU23LX Air Conditioner, and the 4SHP23LX Heat Pump. Together, they represent Armstrong Air’s top-end lineup, showcasing high efficiency, inverter-driven technology, and smart control integration. In my field experience, it appeals most to homeowners who rely heavily on contractor recommendations and want premium comfort without the marketing markup of more famous brands.