Updated September 30, 2026 · SmartHomeCue Editorial Team
Lennox vs SONOFF
Lennox vs SONOFF: the differences
| Compare |  Lennox |  SONOFF |
|---|---|---|
| Matter certified | No | YesHas it |
| Hub required | No | YesHas it |
| Warranty | 10 yearsHigher | 2 years |
| Markets | US, CA | AT, BE, BG, HR, CY, CZ, DK, EE, FI, FR, DE, GR, HU, IE, IT, LV, LT, LU, MT, NL, PL, PT, RO, SK, SI, ES, SE, GB, US |
| Price from | Not confirmed | €6.16 |
| Heat pump compatible | Yes | Not confirmed |
| Subscription per month | $0 | Not confirmed |
Same on both: Local control (Yes), Energy reporting (Yes).
We earn a commission when you sign up through links on this site. Partner status can affect where a brand appears in our rankings.
Key differences
- SONOFF scores higher overall: 9.4 vs 9.2.
- Hub required: only SONOFF.
- Warranty is higher at Lennox: 10 years vs 2 years.
- Support channels: only Lennox offers Chat.
- Matter certified: only SONOFF.
- SONOFF is available in 27 more countries.
- Device types: only SONOFF offers Trv, Lighting, Plug.
- Protocols: only SONOFF offers Thread, Zigbee.
- Ecosystems: only SONOFF offers Homekit, Smartthings.
- Markets: only Lennox offers CA.
Our verdict on each
Lennox
Lennox suits households that want heating and cooling handled locally, without a hub or a running fee, and pairs that with 10 years of warranty. The catch is reach: sales cover US and CA only, and the catalogue stays on thermostat and sensor with nothing else to add.
SONOFF
SONOFF suits people building a wired or Zigbee home on a tight budget who want cameras and climate gear that keep working without a subscription. Entry costs start at €6.16, the range is Matter certified, and local storage holds recordings for 90 days. The catch is support, which runs on email and help centre only.
Score breakdown
| Area | Lennox | SONOFF |
|---|---|---|
| Cost | 9.4The monthly subscription is $0, so the running cost after the purchase is nothing to plan around. | 9.9HigherEntry price runs €6.16 and a camera sits at €20.47, with monitoring and contracts at 0 months, well under the €61.38 typical band. |
| Offer | 9.2HigherEnergy reporting and heat pump support sit alongside thermostat and sensor, with no hub needed for any of it. | 9.0Free features cover local AI detection, privacy zones and RTSP, and energy reporting is included. |
| Trust | 9.0A 10 years warranty, a US base and email, chat and help centre support, run by a firm founded in 1895. | 9.1Higher2 years of cover, local storage as standard, and support limited to email and help centre, which is thinner than most rivals. |
Where they rank in our lists
| Ranking | Lennox | SONOFF |
|---|---|---|
| Smart thermostats | 6 of 24 | 4 of 24 |
| Matter smart home devices | 8 of 33 | 5 of 33 |
Licences and countries
| Country | Lennox | SONOFF |
|---|---|---|
| Headquarters | United States | China |
Available in 1 country for both. Additional countries for Lennox: 1. Additional countries for SONOFF: 28.
Where these facts come from
Lennox
- lennox.com: 15 facts, checked September 30, 2026
SONOFF
- sonoff.tech: 13 facts, checked September 30, 2026
Every fact side by side
| Fact | Lennox | SONOFF |
|---|---|---|
| Device types | Thermostat, Sensor | Thermostat, Trv, Lighting, Plug, Hub, Sensor, BlindsCovers more |
| Protocols | Wi fi, Matter | Matter, Thread, Zigbee, Wi fiCovers more |
| Ecosystems | Alexa, Google, Matter | Alexa, Google, Homekit, Matter, SmartthingsCovers more |
| Legal entity | Lennox International Inc. | Shenzhen Sonoff Technologies Co.,Ltd |
| Headquarters | United States | China |
| Founded | 1895 | Not confirmed |
| Support channels | Email, Chat, Help centreCovers more | Email, Help centre |
Home security
| Fact | Lennox | SONOFF |
|---|---|---|
| Price | Not confirmed | €20.47 |
| Minimum contract | Not confirmed | 0 months |
| Products | Not confirmed | Camera, Alarm |
| Professional monitoring | Not confirmed | No |
| Local storage | Not confirmed | Yes |
| Pricing model | Not confirmed | Diy |
| Money-back period | Not confirmed | 30 days |
| Free features | Not confirmed | 1080P live view, free motion detection push alerts, local microSD (TF) recording up to 128GB, two-way audio, sleep mode, privacy zones and RTSP; CAM-C44HE adds local AI detection and security modes with no monthly fee |
| Top resolution | Not confirmed | 4k |
| Power source | Not confirmed | Wired |
| Recording retention | Not confirmed | 90 days |
Where each stands against the rest
| Fact | Lennox | SONOFF | Median |
|---|---|---|---|
| Price from | Not confirmed | €6.16lowest quarter | €19.99 |
| Subscription per month | $0at the median | Not confirmed | $0 |
| Warranty | 10 yearshighest quarter | 2 yearsat the median | 2 years |
Median across 34 listed brands.
Pros and cons
Lennox
Pros
- No hub is required and local control is supported, so schedules and set points stay on the thermostat itself.
- The subscription is $0 a month, so there is no renewal to budget for after the purchase.
- Heat pump compatibility and energy reporting are both listed, covering the two checks most households make on a thermostat.
Cons
- Matter certified is listed as no, so wi fi and matter pairs a protocol with a standard the thermostat is not certified to.
- Support runs on email, chat and help centre only, and phone is not among the listed channels.
- The range is sold in US and CA only, so buyers in other markets need a different supplier.
SONOFF
Pros
- Matter certified gear across thermostat, trv and lighting, covering matter, thread and zigbee so it fits most existing setups
- Entry prices from €6.16 and cameras from €20.47
- Free features include local AI detection, security modes, privacy zones and RTSP with no monthly fee
Cons
- Professional monitoring is not offered, so alarms stay self-served
- A hub is required for the Zigbee thermostat, adding cost to a heating setup
- Support runs on email and help centre only, with no phone or live chat line
Who each suits
Lennox
Who it suits
- Households in US and CA running a heat pump who want a thermostat that works without a hub and keeps control on the device.
- Renters and homeowners who would rather see no recurring fee, since the monthly subscription is $0.
- Buyers who rate a 10 years warranty and a long trading history above a wide device catalogue.
Who should look elsewhere
- Aqara buyers who want the line to stretch past thermostat and sensor into hubs, lighting, plugs and blinds.
- Lutron buyers who want climate control in the same system as lighting and blinds, since Lutron lists lighting, blinds and thermostat.
- SONOFF buyers who want radiator valves and hubs, since thermostat, trv and lighting reaches well past the thermostat and sensor on offer here.
SONOFF
Who it suits
- Renters and homeowners who already run a Matter or Zigbee home
- People who want camera recording on a card rather than a cloud subscription
- Builders covering lighting, plugs, sensors, blinds and climate from one maker
Who should look elsewhere
- Anyone who wants professional alarm monitoring, which Sonoff does not sell
- Households on Z-Wave, a protocol outside the matter, thread and zigbee list
- Buyers who want phone or chat support, since email and help centre is the limit
Current offers
SONOFF
Current offer
Discount code
10% OFF your first order for newsletter subscribers: 10% off first order
Email newsletter signup; valid for 30 days; one-time use per customer; cannot be combined with other offers
Source, checked September 30, 2026
Country by country
| Country | Lennox | SONOFF |
|---|---|---|
| Austria | No | Yes |
| Belgium | No | Yes |
| Bulgaria | No | Yes |
| Canada | Yes | No |
| Croatia | No | Yes |
| Cyprus | No | Yes |
| Czechia | No | Yes |
| Denmark | No | Yes |
8 of 30 countries where either is available.
Questions about each
Lennox
What does a Lennox thermostat cost once you have bought it?+
The recurring part is simple: the monthly subscription is $0, so there is nothing to renew and no fee to set aside each month. You pay for the hardware, and 10 years of warranty means there is no extra cover to buy. Running cost stays at nothing.
Do I need to buy a hub or a bridge first?+
No hub is required. The thermostat and sensor run on wi fi and matter, and local control is supported, so schedules and set points live on the device. There is no extra box to mount, power or pair, and nothing sitting between the thermostat and your router to keep running.
SONOFF
What does SONOFF hardware cost to get started?+
Entry prices run €6.16 across the range, and a security camera starts at €20.47. There is no separate hardware bundle to buy, so the outlay is the device itself plus a hub if the product needs one.
Is there a monthly subscription or contract?+
No. Contract length is 0 months, and local card recording, AI detection, privacy zones and RTSP are listed as free features. The dual-lens hub camera adds local AI detection and security modes with no monthly fee attached.