ℹ️ FAQ Authority

The Why Engine

Answering the specific questions that trigger the something feels off sensation. Clear, unbiased insight into contractor estimates and codes.

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This is the most common shock homeowners face. When one bid is double another, it usually comes down to three main structural factors:

  • Equipment Efficiency & Grade: A standard builder-grade system (single-stage compressor, 14 SEER) is much cheaper to buy than a high-efficiency variable-capacity system (up to 22 SEER). The high-efficiency system runs quieter and lowers utility bills, but costs more upfront.
  • Contractor Labor Warranties: All manufacturers cover replacement parts (usually 10 years if registered), but they never cover the installer labor. A cheap bid often includes only 30 to 90 days of labor coverage, leaving you to pay $150–$250/hour for callbacks. A premium installer covers labor for 2–10 years.
  • Installation Safeguards: Cheap installers win bids by excluding crucial ancillary work (like electrical surge protection, chemical line set flushing, or emergency drain safety float switches) that premium bids include by default.

Always check the exact model numbers and verify if a written labor warranty duration is specified.

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