● Space Heaters · Comparison

Dreo Solaris 317 Space Heater vs De'Longhi Dragon Digital Oil-Filled Radiator

Both made our Best Space Heaters for Large Rooms shortlist, at #1 and #2. Here's how they differ and who each one suits.

✎ PickHonest Research Desk▦ Updated October 15, 2026◷ 5 min read

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Dreo Solaris 317 Space HeaterDreo Solaris 317 Space HeaterView on Amazon VS
De'Longhi Dragon Digital Oil-Filled Radiator TRD40615EBKDe'Longhi Dragon Digital Oil-Filled Radiator TRD40615EBKView on Amazon

Quick verdict

Choose the Dreo Solaris 317 Space Heater if you want 70-degree oscillation spreads heat across a noticeably wider arc than fixed heaters. Choose the De'Longhi Dragon Digital Oil-Filled Radiator TRD40615EBK if you'd rather have no fan means no dust, sawdust, or wood shavings pulled into an intake. Overall we rank the Dreo Solaris 317 Space Heater higher: #1 versus #2 in our Best Space Heaters for Large Rooms list.

Winner overall: Dreo Solaris 317 Space Heater

Dreo Solaris 317 Space Heater vs De'Longhi Dragon Digital Oil-Filled Radiator TRD40615EBK compared

Every difference that matters, in one table.

Keep researching

  • Best Space Heaters for Large Rooms
  • Dreo Solaris 317 Space Heater review
  • De'Longhi Dragon Digital Oil-Filled Radiator TRD40615EBK review
  • All space heaters

Bottom line

Choose the Dreo Solaris 317 Space Heater if you want 70-degree oscillation spreads heat across a noticeably wider arc than fixed heaters. Choose the De'Longhi Dragon Digital Oil-Filled Radiator TRD40615EBK if you'd rather have no fan means no dust, sawdust, or wood shavings pulled into an intake. Overall we rank the Dreo Solaris 317 Space Heater higher: #1 versus #2 in our Best Space Heaters for Large Rooms list.

Dreo Solaris 317 Space Heater

Dreo Solaris 317 Space Heater

Dreo

70-degree oscillation spreads warmth across a two-bay garage workspace

  • 1500W PTC ceramic heating element
  • 70-degree oscillation
  • ETL-certified tip-over and overheat protection
  • Digital thermostat with remote
  • 12-hour timer

Pros

  • No fan means no dust, sawdust, or wood shavings pulled into an intake
  • Metal radiator body holds up better to garage conditions than plastic housings
  • Holds heat for a while after shutoff, useful for a garage you check on periodically
  • Quiet enough to run while using power tools nearby

Cons

  • Slow to warm up, not ideal if you need heat the moment you walk in
  • Bulky footprint takes up floor space near a workbench
  • Surface gets hot to the touch, needs clearance from stored materials
Prices and availability change, so confirm on Amazon.View on Amazon
De'Longhi Dragon Digital Oil-Filled Radiator TRD40615EBK

De'Longhi Dragon Digital Oil-Filled Radiator TRD40615EBK

De'Longhi

No fan means no dust, sawdust, or wood shavings pulled into an intake

  • 1500W oil-filled radiator
  • No fan, fanless convection heating
  • Digital timer and ECO mode
  • 3 heat settings
  • Metal radiator body

Pros

  • No fan means no dust, sawdust, or wood shavings pulled into an intake
  • Metal radiator body holds up better to garage conditions than plastic housings
  • Holds heat for a while after shutoff, useful for a garage you check on periodically
  • Quiet enough to run while using power tools nearby

Cons

  • Slow to warm up, not ideal if you need heat the moment you walk in
  • Bulky footprint takes up floor space near a workbench
  • Surface gets hot to the touch, needs clearance from stored materials
Prices and availability change, so confirm on Amazon.View on Amazon

FAQ

Common questions

Which is better, the Dreo Solaris 317 Space Heater or the De'Longhi Dragon Digital Oil-Filled Radiator TRD40615EBK?

Choose the Dreo Solaris 317 Space Heater if you want 70-degree oscillation spreads heat across a noticeably wider arc than fixed heaters. Choose the De'Longhi Dragon Digital Oil-Filled Radiator TRD40615EBK if you'd rather have no fan means no dust, sawdust, or wood shavings pulled into an intake. Overall we rank the Dreo Solaris 317 Space Heater higher: #1 versus #2 in our Best Space Heaters for Large Rooms list.

What is the difference between the Dreo Solaris 317 Space Heater and the De'Longhi Dragon Digital Oil-Filled Radiator TRD40615EBK?

The Dreo Solaris 317 Space Heater stands out because 70-degree oscillation spreads heat across a noticeably wider arc than fixed heaters, while the De'Longhi Dragon Digital Oil-Filled Radiator TRD40615EBK stands out because no fan means no dust, sawdust, or wood shavings pulled into an intake. The trade-offs differ too: the Dreo Solaris 317 Space Heater's ma in caveat is that still capped at 1500W like every other model here, so raw output is the same, and the De'Longhi Dragon Digital Oil-Filled Radiator TRD40615EBK's is that slow to warm up, not ideal if you need heat the moment you walk in.

Is the Dreo Solaris 317 Space Heater worth it over the De'Longhi Dragon Digital Oil-Filled Radiator TRD40615EBK?

For most buyers, yes: it's our #1 pick. Consider the De'Longhi Dragon Digital Oil-Filled Radiator TRD40615EBK instead if still capped at 1500W like every other model here, so raw output is the same is a deal-breaker for you.

Who should buy the De'Longhi Dragon Digital Oil-Filled Radiator TRD40615EBK instead of the Dreo Solaris 317 Space Heater?

The De'Longhi Dragon Digital Oil-Filled Radiator TRD40615EBK suits garages, while the Dreo Solaris 317 Space Heater is best for large rooms.

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