Honeywell RTH9585WF1004 Wi-Fi Smart Thermostat vs Lennox iComfort S40

Name: Honeywell RTH9585WF1004 Wi-Fi Smart Thermostat
Brand: Honeywell
SKU: honeywell-home-rth9585wf1004-wi-fi-smart-thermostat-silver
Price: 63.99 USD
Availability: InStock

Looking for an honest Honeywell RTH9585WF1004 Wi-Fi Smart Thermostat vs Lennox iComfort S40 comparison in 2026? We scored both smart thermostats on the same six-dimension framework — performance, battery, display, camera, design and value — using identical methodology, so the numbers below are directly comparable. In our overall scoring the Honeywell RTH9585WF1004 Wi-Fi Smart Thermostat comes out ahead 49/100 to 24/100 — a 25-point gap. On price the Honeywell RTH9585WF1004 Wi-Fi Smart Thermostat undercuts the Lennox iComfort S40 by 486% ($63.99 vs $375), which materially changes the value calculus for budget-conscious buyers.

VENCEDOR

Honeywell

RTH9585WF1004 Wi-Fi Smart Thermostat

49/100

$64

Comprar na Amazon →Comprar no eBay →

Lennox

iComfort S40

24/100

$375

Comprar na Amazon →Comprar no eBay →

AI Matrix

Honeywell RTH9585WF1004 Wi-Fi Smart Thermostat clearly outperforms the Lennox iComfort S40 in the smart thermostats category, especially in value ($63.99 vs $375), scoring 49 vs 24. If you want the better overall smart thermostats, Honeywell RTH9585WF1004 Wi-Fi Smart Thermostat is the recommended choice.

Reviewed by VersusMatrix Editorial Team|Our methodology

4 Reasons Why Honeywell RTH9585WF1004 Wi-Fi Smart Thermostat Is Better

1.Lighter: 200g vs 400g
2.Lower price: $63.99 vs $375
3.Better value score: 91 vs 7
4.Higher overall score: 49 vs 24

A que você renuncia?

Picking Honeywell RTH9585WF1004 Wi-Fi Smart Thermostat over Lennox iComfort S40 means trading these off.

Você renuncia a

Nada significativo — as especificações são praticamente iguais

You gain

+$311 cheaper ($63.99 vs $375)
+200g lighter (200g vs 400g)

Comparação de Especificações

Detalhamento da Pontuação

Honeywell RTH9585WF1004 Wi-Fi Smart ThermostatLennox iComfort S40

Smart35% weight

Empate

Price30% weight

Honeywell RTH9585WF1004 Wi-Fi Smart Thermostat Vencedor

Honeywell RTH9585WF1004 Wi-Fi Smart Thermostat

Vencedor

✓ Pros

●Lower price: $63.99 vs $375
●Lighter build: 200g vs 400g
●Better value for money

Lennox iComfort S40

✗ Cons

●Higher price: $375 vs $63.99
●Higher price relative to value

Comparação de Especificações

Spec	Honeywell RTH9585WF1004 Wi-Fi Smart ThermostatW	Lennox iComfort S40
Price	63.99$✓	375$
Display	7"	7"
Display Type	Color LCD touchscreen	Color LCD touchscreen
Wi-Fi	Wi-Fi 802.11 b/g/n	Wi-Fi
Weight	200g✓	400g
Dimensions

Quem Deve Comprar

Buy Honeywell RTH9585WF1004 Wi-Fi Smart Thermostat if…

Buy the Honeywell RTH9585WF1004 Wi-Fi Smart Thermostat if you want the best overall value in this comparison. It scores higher overall and is the recommended choice for most buyers.

Buy Lennox iComfort S40 if…

The Lennox iComfort S40 is worth considering if you prefer its specific design, ecosystem, or brand — though it scores lower overall in our comparison.

Honeywell RTH9585WF1004 Wi-Fi Smart Thermostat vs Lennox iComfort S40 — FAQ

Honeywell RTH9585WF1004 Wi-Fi Smart Thermostat vs Lennox iComfort S40: which is better?

Is Honeywell RTH9585WF1004 Wi-Fi Smart Thermostat better than Lennox iComfort S40?

Yes, Honeywell RTH9585WF1004 Wi-Fi Smart Thermostat scores higher overall (49 vs 24).

Which is cheaper, Honeywell RTH9585WF1004 Wi-Fi Smart Thermostat or Lennox iComfort S40?

Honeywell RTH9585WF1004 Wi-Fi Smart Thermostat is cheaper at $63.99 vs $375 for the Lennox iComfort S40.

Who should buy the Honeywell RTH9585WF1004 Wi-Fi Smart Thermostat?

Buy the Honeywell RTH9585WF1004 Wi-Fi Smart Thermostat if you want the best overall value in this comparison. It scores higher overall and is the recommended choice for most buyers.

Who should buy the Lennox iComfort S40?

The Lennox iComfort S40 is worth considering if you prefer its specific design, ecosystem, or brand — though it scores lower overall in our comparison.

Which is lighter, Honeywell RTH9585WF1004 Wi-Fi Smart Thermostat or Lennox iComfort S40?

Honeywell RTH9585WF1004 Wi-Fi Smart Thermostat is lighter at 200g vs 400g.

Full Honeywell RTH9585WF1004 Wi-Fi Smart Thermostat review →Full Lennox iComfort S40 review →All Honeywell Smart Thermostats →All Lennox Smart Thermostats →

Reviewed by VersusMatrix Editorial Team

Last updated: May 10, 2026

Editorial guidelines

Methodology: AI-powered analysis of technical specifications from manufacturer data. Scores are calculated by comparing products across multiple dimensions and normalized relative to the full category database. Our editorial process is independent and not influenced by affiliate partnerships.