❄️ HVAC

Smart Thermostats — Compatibility First

A smart thermostat pays for itself in 1–2 years in Spokane. The catch: compatibility with your specific system matters more than most people realize.

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What's Covered

  • ✓ C-wire required by most smart thermostats
  • ✓ Ecobee includes Power Extender Kit for no-C-wire systems
  • ✓ Heat pumps need O/B reversing valve terminal support
  • ✓ Geofencing + scheduling = biggest energy savings
  • ✓ Estimated 8% savings on annual heating and cooling

Typical Costs in Spokane

Basic programmable thermostat$50 – $120 installed
Ecobee SmartThermostat Premium$150 – $280 installed
Google Nest Learning Thermostat$180 – $300 installed
C-wire installation (if needed)+$100 – $250

Common Questions

What is a C-wire and do I need one?
The common wire provides constant 24V power. Most older Spokane homes lack one. Ecobee includes an adapter; Nest may work without one but can cause HVAC issues. Running a new wire ($100–$250) is the clean solution.
Does it work with my heat pump?
Heat pump systems require a thermostat with an O/B reversing valve terminal. Ecobee handles heat pumps well. Confirm compatibility with your specific system before purchasing.
How much will it save on my Avista bill?
EPA estimates 8% average savings. For a $1,800/yr Avista heating bill that is ~$144/yr — payback in 1–2 years.

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