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The only savings claim here with a named baseline — a hold of 72

ecobee EB-STATE7-01

A Wi-Fi smart wall thermostat claiming up to 23 per cent savings against a constant hold at 72, compatible with 85 per cent of systems.

ecobee Smart Thermostat Essential on a wall with digital display

ecobee EB-STATE7-01

A Wi-Fi smart wall thermostat claiming up to 23 per cent savings against a constant hold at 72, compatible with 85 per cent of systems.

Type
Wall thermostat, wired to the HVAC system — not an outlet thermostat
Savings claim
Up to 23% a year on heating and cooling, compared with a hold of 72
Compatibility
Stated at 85% of systems, checkable with the maker’s online checker
Scheduling
Adjusts to a set schedule, saving when away
Certification
Energy Star
C-wire
Not stated by the maker
Accuracy
Not stated by the maker
Voice platforms
Not stated by the maker
Amazon reference
B0DT9MC2Z9
EAN
0627988006000
  • The only savings claim on this shelf with a named baseline: 23 per cent against a constant hold at 72
  • The only thermostat here that publishes a compatibility figure — 85 per cent of systems — and points at an online checker
  • Two bullets only: nothing about the C-wire, the accuracy, the voice platforms or the box contents

Best for: A household that wants a named-brand smart thermostat and will run the compatibility checker first

≈ $110
Check price on Amazon

Specifications

Type
Wall thermostat, wired to the HVAC system — not an outlet thermostat
Savings claim
Up to 23% a year on heating and cooling, compared with a hold of 72
Compatibility
Stated at 85% of systems, checkable with the maker’s online checker
Scheduling
Adjusts to a set schedule, saving when away
Certification
Energy Star
C-wire
Not stated by the maker
Accuracy
Not stated by the maker
Voice platforms
Not stated by the maker
Amazon reference
B0DT9MC2Z9
EAN
0627988006000

What the maker puts in writing

  • Up to 23% a year, compared with a hold of 72
  • Compatible with 85% of systems, with an online checker
  • Adjusts to a set schedule, saving when away
  • Energy Star certified

Two bullets. It is the shortest listing on this shelf.

The baseline is the honest part

Every smart thermostat claims a saving. Almost none says what it is saving against.

A hold of 72 °F all year is a real and common habit, and it is a baseline you can test yourself. The 23 per cent is then a comparison rather than a number floating free — which is more than the two other savings claims on this shelf manage.

Eighty-five per cent

The other side of that figure is that fifteen per cent of houses need a different thermostat, and this listing does not say which fifteen.

Run the checker before ordering. Two thermostats on this shelf publish their incompatible system types in full, which is the other way to answer the same question.

Availability

Read on the day this page was built: $110 at the American Amazon shop.

Read from Keepa on the day this page was last revised; stock and price both move without notice.

Prices quoted in this text were read on 2026-10-04. The live price is at the top of the page.

The questions that keep coming up

What does "compared to a hold of 72" mean?

That the 23 per cent saving is measured against leaving the thermostat at a constant 72 °F all year. That is a fair and unusually explicit baseline — the Sensi on this shelf claims about 23 per cent with no baseline at all, and the Amazon thermostat cites an EPA average dollar figure instead.

Will it work with my system?

Eighty-five per cent of systems, by the maker, with an online checker named. That is more than any other listing on this shelf offers, and it is also an admission: one house in seven will need something else.

Does it need a C-wire?

The listing does not say. Four thermostats on this shelf state that a C-wire is required and three state that it is not needed on most systems. On an unknown, assume you may need one and check the wall before ordering.

More outlet thermostats

  • Amazon Smart Thermostat on a wall with simple display

    Amazon 53-026123

    An Alexa smart wall thermostat built on Honeywell technology, citing an EPA estimate of ninety dollars a year saved.

    Type
    Wall thermostat, wired to the HVAC system — not an outlet thermostat
    C-wire
    Required — stated in the product title
    Savings claim
    EPA estimate: Energy Star certified thermostats save an average of $90 on yearly energy bills
    Ecosystem
    Alexa and Ring; comfort zones via select Alexa devices using temperature or presence detection
    Scheduling
    Home, away and sleep schedules, or automatic control with Alexa+
    Remote control
    Alexa app
    Technology
    Honeywell Home thermostat technology
    Rebates
    The maker emails details of local energy-provider rebates after purchase
    Accuracy
    Not stated by the maker
    Amazon reference
    B08J4C8871
    EAN
    0840080537740
    • The only savings claim on this shelf given in dollars and attributed to a third party: an EPA estimate of $90 a year
    • Builds comfort zones from other Alexa devices using their temperature readings or presence detection, which nothing else here does
    • C-wire required, stated in the title — three thermostats here do not need one

    Best for: An Alexa household with a C-wire in the wall, wanting Alexa and Ring built in at the lowest price on this shelf

    ≈ $57
    Check price on Amazon
  • Honeywell Home RTH9600WF smart color thermostat with touchscreen on a wall

    Honeywell Home RTH9600WF2022

    A Wi-Fi color touchscreen wall thermostat showing indoor and outdoor temperature, humidity and a forecast, requiring a C-wire.

    Type
    Wall thermostat, wired to the HVAC system — not an outlet thermostat
    On screen
    Indoor and outdoor temperature and humidity, plus a daily weather forecast
    Display
    Customisable high-definition color
    C-wire
    Required; a C-wire power adapter may be needed
    Compatible with
    Forced air (gas, oil or electric), hot water and steam, heat pumps with electric backup
    Not compatible with
    Electric baseboard heat at 120–240 V; heating-only oil furnaces without a C-wire
    Control
    App, Amazon Alexa, Google Assistant, Microsoft Cortana and others
    Certification
    Energy Star
    In the box
    Thermostat, wall plate, screws, anchors, quick start guide, ID card, wire labels, user guide
    Amazon reference
    B09TBGGLQB
    EAN
    0194159008144
    • The only thermostat on this shelf with outdoor temperature, humidity and a forecast on the device itself
    • Lists what it will not work with as precisely as what it will — electric baseboard at 120–240 V, heating-only oil furnaces without a C-wire
    • The most expensive thermostat on this shelf, and it requires a C-wire — three thermostats here do not

    Best for: A forced-air or hydronic system with a C-wire already present, where the thermostat should be the room’s weather station too

    ≈ $145
    Check price on Amazon
  • Honeywell Home RTH9585WF Wi-Fi smart color thermostat in grey

    Honeywell Home RTH9585WF1004

    A seven-day programmable Wi-Fi color thermostat with monthly energy reports and a Circulate fan mode running about 35 per cent of the time.

    Type
    Wall thermostat, wired to the HVAC system — not an outlet thermostat
    Programming
    7 day, flexible, including for utility peak-rate pricing
    Display
    Color touchscreen, personalisable
    Fan modes
    On; Automatic; Circulate — running randomly about 35% of the time
    Reports
    Monthly energy reports with personalized tips
    C-wire
    Required
    Compatible with
    Forced air (gas, oil or electric), hot water and steam, heat pumps with electric backup
    Not compatible with
    Electric baseboard heat at 120–240 V
    Control
    App, Amazon Alexa and Google Home
    Certification
    Energy Star
    Amazon reference
    B075BF6V58
    EAN
    0085267911313
    • The only thermostat on this shelf that quantifies its Circulate fan mode — about 35 per cent of the time — rather than naming it and stopping
    • Monthly energy reports with tips, which only this thermostat and its dearer stablemate publish
    • C-wire required, where three thermostats on this shelf work without one on most systems

    Best for: A forced-air or hydronic house on a time-of-use tariff, with a C-wire already in the wall

    ≈ $110
    Check price on Amazon

Elsewhere in the spares drawer

  • COVERTIFY breathable mesh air conditioner cover on an outdoor condenser top

    COVERTIFY KTZ020

    A 36-inch breathable resin mesh cover with diamond perforations and integrated hooks, in one of five sizes.

    Type
    Breathable mesh top cover
    Size
    36 × 36 in
    Other sizes
    26 × 26, 28 × 28, 32 × 32, 36 × 36 and 40 × 40 in
    Material
    Tough resin mesh
    Perforations
    Diamond shaped, for airflow and against heat and moisture build-up
    Fixing
    Cover and hooks in one piece — no separate parts
    Season
    All year: snow, leaves, storms, pollen
    Height coverage
    Not stated by the maker — a top cover
    Guarantee
    Not stated by the maker
    Amazon reference
    B0FQC6SF96
    EAN
    0762849989877
    • The only cover on this shelf offered in five sizes, so the fit is a choice rather than a compromise
    • Hooks integrated into the cover, which the listing frames as no missing parts and no complicated steps
    • A top cover: it does not protect the sides, where a full-height mesh cover on this shelf does

    Best for: A standard square condenser under a tree, where leaves fall from above and the cover stays on all year

    ≈ $10
    Check price on Amazon
  • LISOL full mesh air conditioner cover fitted over an outdoor condenser unit

    LISOL Not stated by the maker

    A full-height mesh cover 28 by 28 by 32 inches in PVC-coated polyester, with a drawstring and a buckled strap.

    Type
    Full-coverage mesh — breathable
    Size
    28 in long × 28 in wide × 32 in high
    Material
    Heavy-duty PVC-coated polyester mesh
    Fixing
    Adjustable drawstring plus a strap with a plastic buckle
    Coverage
    Top to bottom, all surfaces, with the top fully covered
    Airflow
    Mesh allows circulation; stated to have no negative effect on condenser operation
    Keeps out
    Leaves, twigs, acorns, cottonwood and grass clippings
    Guarantee
    Refund or free replacement offered by the maker
    Sizes available
    Not stated — one size published
    Amazon reference
    B08HWFKL2W
    EAN
    0883339907949
    • The only cover here that is both full height — 32 inches, down to the base — and breathable mesh
    • States outright that it does not affect condenser operation, so it can stay on through the cooling season
    • The most expensive mesh cover on this shelf, at more than three times the price of two 36-inch mesh tops here

    Best for: A condenser under trees that drop acorns and cottonwood, where the cover should stay on all year

    ≈ $33
    Check price on Amazon
  • LPECMX magnetic vent cover screens with PVC frame for floor registers

    LPECMX 01

    Four magnetic 4-by-10-inch vent filters with a PVC frame and dual-layer mesh, washable and reusable.

    Type
    Indoor vent filter screens — not an air conditioner cover
    Size
    4 × 10 in, stated to fit most floor, wall and ceiling vents
    Quantity
    4
    Fixing
    Magnetic strips, stated 30% stronger than before; reinforced PVC frame
    Filtration
    Dual-layer mesh, for dust and pet hair
    Maintenance
    Vacuum or rinse under the tap; reusable
    Construction
    High-density PVC frame with an anti-fade coating
    Fits metal vents
    Yes — the magnets need a ferrous register
    MERV rating
    Not stated by the maker
    Amazon reference
    B0F53P364C
    EAN
    0723747189813
    • The cheapest product on this shelf, and the only one that works indoors on the register rather than outdoors on the machine
    • Washable and reusable, so it is a purchase rather than a subscription
    • Nothing to do with protecting an air conditioner: it filters room air at the register

    Best for: A floor register in a dusty room or a house with pets, where the duct keeps filling with hair

    ≈ $8
    Check price on Amazon

All outlet thermostats