Know exactly where your heating oil stands.
Monitor your tank from anywhere, get alerted before you run low, and order heating oil right from your phone. No more trips to the basement with a flashlight.
Which Smart Oil Gauge is right for you?
Both monitor your tank from your phone, alert you before you run low, and track your usage. The difference is how much of the tank the sensor can see — and which size openings it fits.
Smart Oil Gauge Duo
- Dual ultrasonic sensors that read all the way to the top of the tank
- Accurate right after a delivery — a topped-off tank reads correctly instead of stopping at 235
- Fits 2″ NPT (most common), 1.5″ adapter, and Roth tanks
Smart Oil Gauge
- Everything most homeowners need — remote monitoring, low-level alerts, usage history, Alexa
- The widest fit — the only model that works with a 1.25″ NPT adapter
- One ultrasonic sensor, which starts reading a few inches below the top of the tank
Find the gauge that fits your tank.
Steel tanks: above ground only, 138 to 550 gallon, vertical or horizontal, single or side-by-side. Roth double-wall tanks: the 400L, 620L, 1000L and 1000LH all work with the Roth adapter.
Find the spare fitting on top of your tank — not the fill pipe, not the vent. Measure straight across the outside of that plug, edge to edge. A tape measure is fine; you don't need to be exact to the sixteenth.
Measured something else? Send us a photo and we'll identify it for you.
The size is stamped on the label on the front of the tank. Every Roth needs our Roth adapter.
Two sensors. The whole tank, top to bottom.
Duo carries a second ultrasonic sensor, and between the two of them they read all the way to the top of the tank. There's no part of your tank they can't measure — from the day the truck pulls away to the day you're nearly empty, the number on your phone is your real number.
- See what you actually got. Once the delivery is done, your phone shows the real level instead of a gauge sitting at full.
- Accurate at the top of the range. Duo reports real gallons while the tank is still full, not only once the level has dropped.
- Same on every tank size. Duo measures the full range on a 275 or 330, vertical or horizontal, and on a Roth.
For reference, a single-sensor gauge reads this same tank up to 235 gallons.
Duo vs. Original
| Model | RecommendedSmart Oil Gauge Duo |
Smart Oil Gauge |
|---|---|---|
| Monitor your tank from anywhere | ✓ | ✓ |
| Low-level alerts by text & email | ✓ | ✓ |
| Usage history & days-to-empty | ✓ | ✓ |
| Works with Alexa | ✓ | ✓ |
| Order oil through FuelSnap | ✓ | ✓ |
| Designed & assembled in the USA | ✓ | ✓ |
| Sensor type | Dual ultrasonic | Single ultrasonic |
| Sensor operating range | 0″ to 72″ | 8″ to 72″ |
| Gallons read — popular tank sizes | ||
| 275 vertical | 0–275 gal | 0–235 gal |
| 275 horizontal | 0–275 | 0–200 |
| 330 vertical | 0–330 | 0–285 |
| 330 horizontal | 0–330 | 0–240 |
| Roth 1000L | 0–275 | 0–240 |
| Fits your tank opening | ||
| 2″ NPT (standard) | ✓ | ✓ |
| 1.5″ NPT adapter | ✓ | ✓ |
| Roth adapter | ✓ | ✓ |
| 1.25″ NPT adapter | ✕ | ✓ |
| Amazon rating | 4.4 ★ · 200+ ratings | 4.0 ★ · 1,900+ ratings |
| Price | $179 | $149 |
Buying direct from us gets you more.
Same gauge, same price — ordered here, it comes with the longest coverage we offer and a person on the other end of the phone.
See how it works.
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1
It goes in the spare plug. Take out the unused plug on top of your tank and thread the gauge in with a pipe wrench and a little pipe dope. No drilling, no wiring, and nothing touching the fuel line.
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2
It reads the oil with sound. An ultrasonic pulse travels down the tank, bounces off the surface of the oil and comes back. The gauge times the echo and turns it into gallons.
-
3
It sends the number to your phone. The gauge joins your home Wi-Fi during setup, then uploads on the schedule you pick — anywhere from once an hour to once a day.
Your tank, on your phone
Gallons remaining, gallons per day, and days until you need a delivery. The gauge reads your tank every hour and uploads on the schedule you choose — anywhere from once an hour to once a day.
Alerts before you run low
A text and an email when your tank drops below a quarter — so a cold snap is never the thing that tells you.
See where it goes
Your burn rate in gallons — by the hour, day, week, month or year. Turn the thermostat down two degrees and watch what it actually does.
Designed and assembled in the USA.
Precision-machined aluminum housing, an ultrasonic sensor that takes hourly readings, and a battery rated for years — built and assembled here, shipped from our own shelves in Danbury, Connecticut.
When something goes wrong, you call us and a person picks up. That's harder to find than the technology is.
Ready to order heating oil? Do it from the app.
Tap Check Oil Prices and see what local dealers are charging today. Pick your gallons, pick a delivery date, pick your dealer, and you're done — without a phone call.
See how FuelSnap works2,100+ ratings, and counting.
“This is how tanks should be gauged.”
Chris M.
“I can now see my true fuel oil level and get notifications when I need to order more. It was very easy to set up and start using.”
“Nice to be able to know exactly what the level of the tank is, from anywhere. The old float can be hard to read, and no more forgetting to check, or having to run down and look.”
“Installed in minutes. Easy to set up. Accurate in reading the tank level. Enables me to monitor my fuel oil tank when out of town and avoid a dry tank.”
Stop guessing how much oil is in your tank.
Free shipping. Designed and assembled in the USA. Support you can actually reach.
