We compared average part prices across every major HVAC brand to answer the question contractors and homeowners always ask — and the results aren't what most people expect.
When you're choosing an HVAC system, the sticker price is only half the story. The real cost of ownership depends on what you'll pay for replacement parts over the next 15–20 years. We analyzed actual retail pricing across thousands of OEM replacement parts to compare the true parts cost of owning each major brand.
Average OEM Part Price by Brand
| Brand | Pricing Tier | Aftermarket Availability |
|---|---|---|
| Carrier | Premium ($130+ avg) | Good — widest aftermarket savings opportunity |
| ICP (Heil, Tempstar, Comfortmaker) | Mid-premium ($85 avg) | Good — shares many parts with Carrier |
| Lennox | Premium ($60–90 avg) | Poor — highest proprietary rate of any brand |
| Trane / American Standard | Mid-premium ($55–85 avg) | Moderate |
| York / Coleman | Mid-range ($40–60 avg) | Good |
| Rheem / Ruud | Budget-friendly ($35–55 avg) | Good |
| Goodman / Amana | Budget-friendly ($40–70 avg) | Excellent — most commodity-friendly design |
Why Carrier Parts Cost More — and Whether It Matters
Carrier consistently sits at the top of the pricing table. Part of this is brand premium, but part of it is genuine: Carrier uses more proprietary components than most competitors. Their control boards, variable-speed modules, and specialized valves often have no aftermarket equivalent, giving Carrier pricing power on the parts that matter most.
Contrast with Goodman/Amana, where the parts philosophy is explicitly commodity-friendly. Goodman furnaces use standard, widely available components — generic igniters, common capacitors, industry-standard contactors. When a Goodman part fails, you often have five sources for the replacement.
The Lennox Tax
Lennox deserves special mention. Their parts aren't necessarily more expensive per unit, but Lennox systems use an unusually high number of proprietary, Lennox-only components. The control boards, variable-speed ECM modules, and even some gas valves are unique to Lennox. This limits competition, restricts availability, and means repairs take longer because the part has to come from the Lennox supply chain. The "cost" isn't just the price — it's the availability cost of waiting for a proprietary part while your system is down.
The Bottom Line: Total Cost of Ownership
If your priority is the cheapest possible repairs over the life of the system:
- Goodman / Amana — lowest OEM prices, widest aftermarket availability, standard components
- Rheem / Ruud — competitive pricing, good parts availability
- York / Coleman — mid-range, decent aftermarket options
- Carrier / Payne / Bryant — premium pricing, but more aftermarket alternatives exist than for Lennox
- Lennox — the proprietary tax hits hardest here; plan for longer wait times and fewer alternatives
None of this means you should choose your HVAC system based on parts cost alone — efficiency, reliability, warranty, and installer quality matter more. But when the inevitable first repair comes at year 8 or 10, you'll appreciate having chosen a system whose parts don't require a second mortgage.
Pricing based on the National HVAC Parts catalog as of July 2026. Brand tiers are generalizations based on catalog-wide averages. Lennox commentary reflects parts availability patterns, not a quality judgment on Lennox equipment.