Lennox 30L27 (Lennox M40 Smart Thermostat): Local Cost, Rebate, and Emissions Snapshot

Certified high-efficiency model in Connected Thermostats. Compare local running cost, incentives, and emissions impact.

Category: Connected Thermostats
Certified Efficiency: Yes
Annual kWh (Scenario): 45.0
Baseline kWh (Scenario): 61.0

State-Level Decision Output (Tennessee)

Annual Cost$4.22
3-Year Cost$12.66
Annual Savings$1.50
3-Year Savings$4.50
Net Upgrade Cost$0.00
Payback0 yrs
  • Applied Electricity Rate: 9.378 cents/kWh (openei_utility_median_validated)
  • Estimated State Rebate: $250.00
  • Estimated Federal Credit: $0.00
  • 3-Year ROI: N/A
  • Annual CO2 Reduction: 6.2 kg
  • Confidence: High - Utility median validated against EIA state average provides stronger local signal.

Recommendation: Consider alternatives or wait for better rebates before upgrading in this state.

Action Checklist

  • Check your utility account and verify service territory before filing incentive applications.
  • Capture quote, model number, and installer credentials before purchase.
  • Apply federal credits on IRS filing and keep all invoices in one folder.
  • Confirm active state program requirements on the official source page for Tennessee.

Evidence & Freshness

  • State Rebate Data Last Checked: 2026-03-23
  • DOE Status Layer: no_public_update
  • DOE Evidence: No energy.gov result in feed

Related Tools

Data stack: Federal efficiency datasets + EIA rates + DSIRE rebate inventory + EPA grid factors + OpenEI utility overlays.