Choosing a hydronic unit heater for a shop, warehouse, or large room usually comes down to two questions: how much heat do you need, and how do you want to spend your budget? When the two shortlisted options come from the same brand, Dayton, the real decision often centers on the listed price and the physical footprint. Here, the Dayton 5Pv27 is listed at $769.00, while the Dayton 5Yh19 is listed at $1,328.99. That $559.99 difference is significant, but the two heaters also differ in the dimensions shown in their titles. Let's break down what each one offers.
Quick verdict: If you want to keep your initial outlay lower, the 5Pv27 is the straightforward choice. If a wider unit better matches your mounting layout, the 5Yh19 is the one to look at. Both are Dayton hydronic unit heaters made in the US, and both are designed as suspended horizontal wall and ceiling unit heaters. The deciding factor will be whether the higher listed price of the 5Yh19 makes sense for your space. That means your choice is not about one heater being inherently better; it's about which trade-off matches your installation priorities.
Both units share the same product type: a suspended horizontal hydronic wall and ceiling unit heater. The battery-included field is No for both, and the Country of Origin is US for both. If you are replacing an existing unit, this shared baseline makes the price and dimension comparison even more straightforward. The shared product type means the installation approach is likely to be similar for both, so the comparison stays focused on what you can see in the title and what you pay.
| Product | Listed Price | Price Bar | Key Listed Spec |
|---|---|---|---|
| Dayton - 5Pv27 Hydronic Unit Heater 27-3/4" H | $769.00 | Suspended Horizontal Hydronic Wall & Ceiling Unit Heater | |
| Dayton 5Yh19 Hydronic Unit Heater, 20-7/8" W, 13" D | $1,328.99 | Suspended Horizontal Hydronic Wall & Ceiling Unit Heater |
Where each product wins:
- For the lower listed price: The Dayton 5Pv27 has the lower listed price, which is a major plus if budget is your priority.
- For the wider stated footprint: The Dayton 5Yh19 lists a width, while the 5Pv27 title focuses on height. If your mounting space is wider rather than taller, the 5Yh19 gives you that horizontal dimension up front.
Dayton - 5Pv27 Hydronic Unit Heater 27-3/4" H
If you are shopping with a firm budget, the Dayton 5Pv27 is the one that makes the most financial sense. Its listed price is the lower of the two, so you can reserve more of your funds for installation or other equipment. The title also tells you it is 27-3/4 inches tall, which is helpful if you are planning around vertical clearance. The flip side is that the title does not state a width, so if your mounting area is constrained horizontally, you will have less to go on. It still comes with the Dayton brand and is listed as a suspended horizontal hydronic wall and ceiling unit heater, so the core function is the same. For anyone who wants a straightforward Dayton hydronic unit heater without stretching the budget, the 5Pv27 is the one to put at the top of the list. It also means you can start with the height as your primary reference point during planning.
Dayton 5Yh19 Hydronic Unit Heater, 20-7/8" W, 13" D
The Dayton 5Yh19 is the higher-priced unit, with a title that spells out a 20-7/8-inch width. That makes it an obvious candidate if you are working with a wider mounting space. The listed model number, 5YH19, is also handy when you need to reference the unit. The limitation is the cost: the higher listed price makes this a more significant investment, so it is harder to justify if you don't specifically need the wider footprint. If your space can accommodate a wider unit and you want the model number clearly identified, the 5Yh19 is worth the higher investment. If you are measuring a wide bay or open area, the 20-7/8-inch figure gives you a concrete dimension to work with from the start.
Final call:
- If you want the lower listed price, choose the Dayton 5Pv27.
- If you need a wider unit, go with the Dayton 5Yh19.
