Should I buy a smart thermostat or a programmable one?

Updated October 2026 · How we answer

Short answerA smart thermostat offers convenience like remote control and learning schedules, but a programmable thermostat is cheaper and works without Wi-Fi. Choose based on your budget, lifestyle, and whether you'll use the smart features.

Smart thermostat pros and cons

Smart thermostats, like those from Nest or Ecobee, connect to your Wi-Fi and let you control them from your phone. Many learn your schedule automatically, adjust based on occupancy, and provide energy reports. They can save energy if used consistently, but they cost more upfront (typically $100–$250).

They also require a C-wire in many cases, which older homes may lack. Installation can be DIY or professional. Some models work with voice assistants and smart home systems, adding convenience.

  • Remote control via smartphone
  • Learning algorithms and geofencing
  • Energy usage reports
  • Integration with smart home ecosystems

Programmable thermostat pros and cons

Programmable thermostats let you set schedules for different times of day, such as lower temperatures when you're asleep or away. They cost much less (often $25–$75) and don't need Wi-Fi or a C-wire. They're reliable and simple to use.

However, they won't adjust automatically if your schedule changes, and you can't control them remotely. If you're away unexpectedly, you can't turn on the heat before you return.

  • Lower upfront cost
  • No internet or C-wire required
  • Simple set-and-forget scheduling
  • Works during power outages (some models)

Which should you choose?

If you want convenience, have a variable schedule, and don't mind spending more, a smart thermostat is a good fit. If you have a predictable routine and want to save money, a programmable thermostat does the job.

Consider your home's wiring and your comfort with technology. Some utility companies offer rebates for smart thermostats, which can offset the cost.

Common mistakes

  • Assuming a smart thermostat always saves money; savings depend on how you use it and your energy rates.
  • Buying a smart thermostat without checking for a C-wire; without one, you may need professional installation or a power adapter.
  • Setting extreme temperatures to heat or cool faster; this doesn't work and wastes energy.
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