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Roth · 275 gal · manufacturer-verified

Roth DWT 1000L Oil Tank (275 gal)

Roth's EcoDWT plus 3 is a double-wall indoor oil tank: a blow-moulded polyethylene inner tank inside a galvanized steel outer tank. Because the inner tank is a moulded shape, not a box, its contents can't be worked out from the outside dimensions — Roth's own fill chart is the authority.

Enter your stick reading
As published by Roth
ModelRoth Double-Wall Oil Storage Tank (EcoDWT plus 3) DWT 1000L
Part / model numberDWT 1000L (model designation as printed; no numeric part number shown on page)
Rated capacity275 (1000) [U.S. Gal (liters)]
Length43 in
Width28 in
Height61 in
Min. Height66 in
Empty weight167 lbs (76 kg)
Inside or outside?not stated (presumably outside of steel outer tank; page does not say)
“Model ... DWT 1000L ... Nom. Capacity U.S. Gal (liters) ... 275 (1000) ... Length: inches (cm) ... 43 (110) ... Width ... 28 (72) ... Height ... 61 (155) ... Tank Weight: lbs. (kg) ... 167 (76)” — Roth, retrieved 2026-11-01

Gallons by the inch

Roth's chart, exactly as printed
DepthUS galLitres% full
3″9343%
4″15575%
5″16616%
6″24919%
7″2710210%
8″3111711%
9″3814414%
10″4215916%
11″4517017%
12″4818218%
13″5721621%
14″6022722%
15″6424223%
16″6825725%
17″7528427%
18″7929929%
19″8231030%
20″8632631%
21″9335234%
22″9736735%
23″10138237%
24″10840939%
25″11342841%
26″11643942%
27″12045444%
28″12848447%
29″13250048%
30″125 ⚠51149%
31″14053051%
32″14856 ⚠54%
33″15257555%
34″15659057%
35″16462159%
36″16763261%
37″17164762%
38″17465963%
39″18268966%
40″18670468%
41″19071969%
42″19373170%
43″20176173%
44″20577675%
45″20979176%
46″21380677%
47″22183680%
48″22484882%
49″22886383%
50″23689686%
51″24090887%
52″24592789%
53″24893990%
54″25596593%
55″25998094%
56″26399595%

Printed on the chart: “Any fuel oil storage tank can only be filled to a maximum of 95% capacity to allow for expansion when fuel is warmed. Filling above the 95% level is not permitted”

What we found checking the maker's documents

  • Figures marked ⚠ break the chart's own order — out of line with the rows either side — and look like misprints. They are shown as printed; a gallon figure marked this way is left out of the stick reader above, which interpolates across it.
  • Probable misprints in the 1000L column, recorded as printed: at 30 in the US gal value is '125' (neighbours 132 at 29 in and 140 at 31 in; liters printed 511); at 32 in the liters value is '56' (neighbours 530 at 31 in and 575 at 33 in; US gal printed 148).

Related: when will my oil run out? · tank corrections · all manufacturer tanks. Dimensions differ from your tank? Measure it and use the tank volume calculator.

Cite this page

Copy a reference for this page. The data on this page comes from the maker's own documents. Also cite the document in the sources list.

APA (7th edition)

Sri Murugan Systems. (2026, November 1). Roth DWT 1000L oil tank (275 gal) chart. tankvolumecalc.com. https://tankvolumecalc.com/tanks/roth/dwt-1000l/

BibTeX
@misc{srimurugansystems2026rothdwt1000l,
  author = {{Sri Murugan Systems}},
  title = {{Roth DWT 1000L Oil Tank (275 gal) Chart}},
  year = {2026},
  month = nov,
  howpublished = {\url{https://tankvolumecalc.com/tanks/roth/dwt-1000l/}},
  url = {https://tankvolumecalc.com/tanks/roth/dwt-1000l/},
  note = {tankvolumecalc.com, accessed 2026-11-01}
}

Last updated 1 November 2026.

Sources and standards

  1. Double-Wall Heating Oil Tanks | Roth North America — spec tableRoth — manufacturerhttps://www.roth-america.com/product/oil-storage-tanks/double-wall-heating-oil-tank/not shown
  2. Roth EcoDWT plus 3 Fill ChartRoth — manufacturerhttps://www.roth-america.com/app/uploads/2022/03/DWT-Fill-Chart.pdf2022-03-14 (PDF metadata)
  3. Methodology — partial-fill formulas used for the geometric figurestankvolumecalc.comhttps://tankvolumecalc.com/methodology/

Every linked source above was retrieved and checked on 2026-11-01.