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Heat Pumps

A heat pump heats and cools with one system by moving heat instead of making it. In King County's mild-but-damp winters, the right model, sized to a real load calculation and installed well, can replace both a furnace and an air conditioner — or pair with a furnace as a dual-fuel system.

What to think about first

  • Cold-climate performance: capacity and efficiency at low outdoor temperatures, not just the nameplate rating.
  • Backup heat: electric heat strips or a gas furnace for the coldest days, and how the switchover is controlled.
  • Sizing from a Manual J load calculation — oversized heat pumps short-cycle and dehumidify poorly.
  • Your electrical panel: many heat pumps need a panel and circuit review before installation.
  • Rebates and incentives change often; a proposal should separate equipment price from any rebate assumptions.

What a complete proposal should state

  • Exact models. Manufacturer and full model numbers for the outdoor unit and indoor unit or air handler.
  • Load calculation. A Manual J (or equivalent) basis for the capacity selected.
  • Electrical scope. Circuits, disconnects and any panel work stated in writing.
  • Installation scope. Line set, condensate, pad/stand, thermostat and controls, permits and inspection.
  • Commissioning. Startup, charge verification and airflow setup included.
  • Warranties. Equipment and labor warranty terms, in writing.

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Tell us what you're looking for.

Answer a few questions about your home and your project. Your request goes to Allred Heating, and we respond with next steps and a site-specific, itemized proposal — not an advertised starting price.

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