---
title: "Smart Thermostat: $150 That Saves $200+/Year"
url: https://www.herespartanburg.com/home-garden/guide/smart-thermostat-duke-energy-rebate/
date: 2026-04-24T08:35:49-04:00
modified: 2026-04-24T08:35:49-04:00
author: "Reginald Orr"
site: "HERESpartanburg"
attribution: "HERESpartanburg"
---

# Smart Thermostat: $150 That Saves $200+/Year

> Ecobee or Google Nest pays back under 12 months in Upstate SC. Duke Energy offers rebates — check duke-energy.com/rebates. Available at Lowe's and Home Depot.

*Source: [HERESpartanburg](https://www.herespartanburg.com/home-garden/guide/smart-thermostat-duke-energy-rebate/) — April 24, 2026 by Reginald Orr*

A smart thermostat in the Upstate pays for itself inside a year. Spartanburg summers run 95°F+ for weeks; winters drop into the 20s. Every degree of nighttime setback compounds.

**Ecobee vs. Nest**

Both work. Ecobee ships a remote room sensor — meaningful in multi-story Spartanburg homes where the hallway thermostat doesn’t reflect the upstairs bedroom. Nest learns your schedule without programming. For a single-story home either is fine; for a two-story go Ecobee.

**Duke Energy rebate**

Duke Energy Carolinas offers a $50-$75 instant rebate on qualifying smart thermostats purchased through their marketplace (duke-energy.com/rebates). Stacks with the retailer sale price.

**Install**

30 minutes if you have a C-wire (common wire). If you don’t — most Upstate homes built before 1990 don’t — you’ll need a C-wire adapter ($25) or an HVAC tech for about $150. Don’t skip this; without a C-wire the thermostat runs on battery scavenge and reboots unpredictably.

**Settings that actually save money**

Summer: 78°F when home, 82°F away, 76°F sleeping. Winter: 68°F home, 62°F away, 66°F sleeping. Every degree of setback is roughly 3% off the bill. An 8-hour daily 4° setback is 12-15% off the total — about $200/year on a typical Spartanburg HVAC bill.