Choosing between two Dayton 5Pv27 hydronic unit heaters is not about different models or feature sets. Both units share the same product name, brand, and core attributes. The difference is in condition: one is described as new with no box and a dent in the fins, while the other is described as new/other from an open box, never used or tested. That makes this a condition-versus-cost trade-off.
Quick Verdict
If your priority is the lowest cash outlay and you can accept a dent in the fins that is described as not affecting use, the lower-priced unit is the immediate choice. If you want a unit that has never been used or tested and comes from an open box, the higher-priced unit is the one that matches that expectation.
Comparison at a Glance
| Dayton 5Pv27 at $250 | Dayton 5Pv27 at $769 | |
|---|---|---|
| Listed price | USD 250.00 | USD 769.00 |
| Price bar | ||
| Condition note | New, no box, dent in fins | New/other from open box, never used or tested |
| Brand | DAYTON | DAYTON |
| Country of Origin | US | US |
| Depth attribute | 15.000 | 15.000 |
| Battery included | No | No |
Where Each Unit Wins
Price: The lower-priced unit wins outright, with a listed price $519 below the higher-priced unit.
Condition: The higher-priced unit wins if you want a unit that has never been used or tested. The lower-priced unit describes a dent in the fins, while the higher-priced unit does not mention any cosmetic flaw.
Shared attributes: Both list the same brand, condition of New, Country of Origin US, Depth 15, Battery Included No, and Custom Bundle No. Since these are identical, they do not favor either unit.
Product Notes
Dayton 5Pv27 Hydronic Unit Heater (27-3/4" H) - Listed at $250

This unit is described as new with no original box, and it has a dent in the fins that is said not to affect use. At $250, it is the lower-priced option in this comparison. Choose this unit if you are comfortable with a cosmetic imperfection and want the smaller cash outlay. The main trade-off is the dent itself and the absence of the original box; both are mentioned up front. The listed specifications, such as the 15-inch depth attribute and the Country of Origin of the US, match the other unit, but the price difference is the primary draw.
Dayton 5Pv27 Hydronic Unit Heater (27-3/4" H) - Listed at $769

This unit is described as new/other from an open box and has never been used or tested. The picture is said to match exactly what arrives. At $769, it is the higher-priced unit, $519 above the other. Choose this unit if you want a unit that has not been through any prior use and you prefer the condition story to the lower price. The limitation is the price gap: for the same model name and identical listed attributes, you are paying a sizable difference for the never-used condition detail.
Final Choice by Use Case
If your project is budget-first and a dent in the fins plus a missing box are acceptable, the lower-priced unit is the pick. If your project prioritizes a unit that has never been used or tested and you are willing to pay a higher listed price, the higher-priced unit is the one.