Choosing a hydronic unit heater for a workshop, warehouse, or large room means balancing airflow, physical height, and price. Two Dayton models tackle that job from the same wall-and-ceiling product family: the 5PV52 and the 5PV33. They look similar on the surface, but their airflow ratings and overall height make them suited to different spaces.
Quick Verdict
If you need more heating air movement and have ceiling height to spare, the Dayton 5PV33 is the stronger pick. If you want a more compact unit that costs less, the Dayton 5PV52 delivers solid airflow in a smaller package for $73.01 less than the larger model. Both are from the DAYTON brand and share the same suspended horizontal hydronic wall and ceiling unit heater design.
At a Glance
| Feature | Dayton 5PV52 | Dayton 5PV33 |
|---|---|---|
| Listed price | $1,426.99 | $1,500.00 |
| Price bar | ||
| Airflow | 1400 Cfm | 2200 Cfm |
| Overall height | 24\" H | 29\" H |
| Product type | Suspended horizontal hydronic wall & ceiling unit heater | Suspended horizontal hydronic wall & ceiling unit heater |
Where Each Model Wins
The 5PV52 wins for tighter spaces. Its compact footprint fits rooms with lower ceilings or narrower mounting areas, and it leaves more room for piping and accessories.
The 5PV33 wins for higher heating output. The listing includes a higher cfm rating, an 18-inch fan diameter, and output specs of 180,000 BtuH at 2 PSI steam and 118,000 BtuH at 200°F water. That extra capacity makes it the better choice for larger open areas.
Product Notes
Dayton 5PV52 Hydronic Unit Heater, 24\" H, 1400 Cfm
This is the space-conscious option. At 24 inches tall and 1400 cfm, it fits where clearance is tight and still moves a solid amount of air. It shares the same suspended horizontal hydronic wall and ceiling design as its bigger sibling, so you get the same mounting concept in a smaller package. The main trade-off is raw airflow: if your space needs more than 1400 cfm to stay comfortable, this unit may not keep up on its own.
Dayton 5PV33 Hydronic Unit Heater, 2200 Cfm, 29\" H
This is the higher-capacity choice. The listing describes it as new/other from an open box, never used or tested, and the photos show what you will receive. It offers 2200 cfm and stands 29 inches tall, with an 18-inch fan and 1-1/2 inch threaded female NPT connections. The listed outputs are 180,000 BtuH at 2 PSI steam and 118,000 BtuH at 200°F water, making it a strong candidate for larger industrial or commercial spaces. Its height and output require more mounting space.
Final Choice by Use Case
Choose the 5PV52 when your mounting height is limited and 1400 cfm will handle the room. Choose the 5PV33 when you need more air movement and have room for a 29-inch unit.
