
5PV51 Comparison
| photo | price | summary | rating |
|---|---|---|---|
![]() | $700.00 | Condition is New, Dayton 5Pv51 Hydronic Unit Heater,20-7/8" W,1400 Cfm.Pls see details, shipping cost = $ | 98.6% |
![]() | $1273.99 | Top Pick! Condition is New, Dayton 5Pv51 Hydronic Unit Heater, 20-7/8" W, 1400 Cfm, FREE SHIPPING | 99.8% |
![]() | $1421.75 | Top Pick! Condition is New, DAYTON 5PV51 Hydronic Unit Heater,Hrzntl,1400cfm 5PV51, shipping cost = $25.00 | 99.8% |
![]() | $1768.36 | Condition is New, Dayton Hydronic Unit Heater,20-7/8" W,1400 cfm 5PV51 Dayton 5PV51 190735349403, FREE SHIPPING | 99.6% |
| photo | price | summary | rating |
|---|---|---|---|
![]() | $934.96 | Condition is New – Open box, NEW OLD STOCK! DAYTON HYDRONIC UNIT HEATER 5PV51, shipping cost = $36.49 | 100.0% |

The Dayton 5PV51 Hydronic Unit Heater is a powerful and efficient heating solution for both residential and commercial applications. Measuring 20-7/8 inches in height and with a maximum airflow capacity of 1400 cubic feet per minute (CFM), this unit is well-equipped to handle large spaces.
The heater operates on hydronic heating, which means it uses water as a heating medium instead of air. This method of heating is known for its even and consistent warmth, making it an excellent choice for larger areas or spaces with high ceilings. The unit is designed to be installed on an exterior wall, making it a versatile option for various installation configurations.
The Dayton 5PV51 Hydronic Unit Heater features a cast-iron housing, which not only adds to its robust and durable design but also helps in heat distribution. The heater comes with a factory-installed, thermostatically controlled, 3-position limit control. This control ensures the heater maintains a consistent temperature, providing optimal comfort while also reducing energy consumption.
The unit's combustion efficiency is impressive, with an AFUE rating of 83.3%, which means it converts 83.3% of the fuel energy to heat. This high efficiency not only results in lower energy bills but also helps in reducing the carbon footprint.
The Dayton 5PV51 Hydronic Unit Heater is easy to install, with a front access panel that allows for easy access to the burner and controls. It also comes with a factory-installed, low water temperature limit control, which ensures the unit's safe operation. The unit's insulated combustion chamber and exterior keep the heat inside the room, reducing heat loss and maximizing energy efficiency.
In summary, the Dayton 5PV51 Hydronic Unit Heater is a high-performance, energy-efficient heating solution that offers consistent warmth and easy installation. With its robust design, advanced controls, and impressive efficiency, this unit is an excellent choice for large spaces that require reliable and efficient heating.
Pros and Cons of Buying a Dayton 5PV51 Hydronic Unit Heater (20-7/8 in. x 1400 CFM)
1. **Even Heat Distribution:** This unit heater provides even heating across the space due to its design that circulates hot water through the unit and emits it through the front grille. This makes it an ideal choice for large, open areas or spaces with high ceilings.
2. **Efficient Heating:** Hydronic unit heaters like the Dayton 5PV51 are known for their energy efficiency. They use less energy than other heating systems, as they only heat the air that is required for the space.
3. **Low Maintenance:** This heater has a simple design with few moving parts, making it low maintenance. The filter needs to be cleaned or replaced periodically, and the occasional inspection of the unit is recommended.
4. **Quiet Operation:** The Dayton 5PV51 operates quietly due to its fan design. It has a motor that is designed to be quiet, ensuring that the heater doesn't disturb the occupants in the space.
5. **Safe:** Hydronic unit heaters are safe as they do not use open flames or hot surfaces that could pose a risk of injury or fire.
6. **Versatility:** These heaters can be used in a variety of applications, including garages, workshops, warehouses, and commercial spaces. They can also be zoned for multiple heating areas.
7. **Installation:** The installation process for hydronic unit heaters can be complex and requires professional assistance. The installation cost can be a significant factor to consider when purchasing this heater.
8. **Cost:** The Dayton 5PV51 hydronic unit heater may have a higher upfront cost compared to other heating options. This includes the cost of the unit, installation, and ongoing maintenance.
9. **Limited Control:** The Dayton 5PV51 does not come with advanced temperature control features. While it does have a thermostat, it may not offer the level of precision that some users may require.
10. **Size:** This heater is relatively large and may not be suitable for small spaces. It is designed for larger areas and requires sufficient clearance around the unit for proper operation.
In conclusion, the Dayton 5PV51 hydronic unit heater offers several advantages, including even heat distribution, energy efficiency, low maintenance, quiet operation, safety, versatility, and efficient heating. However, it also comes with some disadvantages, such as the complex installation process, higher upfront cost, limited control, and size.
Based on the pros and cons, this heater is a suitable choice for large spaces that require even heating and energy efficiency. It is ideal for commercial or industrial applications where a quiet and safe heating solution is required. However, it may not be the most cost-effective option for smaller spaces or those with a limited budget. Ultimately, it is essential to weigh the pros and cons carefully and consider your specific heating needs before making a decision.
Details:
And enclosures. Electrical outlet's. Light industrial. Dayton 5PV51 hydronic unit heater,20-7/8 w,1400 cfm : suspended horizontal wall ceiling heater, air flow direction horizontal, heating method steam, water, output 2 psi steam 84,000 btu h, 200 f water 61,000 1.400 cfm , fan phase 1, overall height 24 1/4 in, width 20 7/8 depth 11 13/16 amperage 2.2 a, coil header, connection size 1 threaded female not, diameter 14 guard OSHA compliant guard, rate 6.1 GM, frequency 60 Hz details.
Receptacles. Electrical boxes.
specifications maxohvac:
- brand: Dayton
- mpn: 5pv51
- type: Hydronics Hydronic Heaters And Accessories
- custom bundle: No
- country/region of manufacture: Us
- weight: 53.0000
- length: 24.500
- width: 14.800
- features: Product Type Suspended Horizontal Hydronic Wall Amp; Ceiling Uni
- upc: 190735349403
payments maxohvac:
- wallet: paypal
- credit card: visa
- other
returns maxohvac:
- time: 60 days
- paid by: seller
- method: money back
- policy: returns accepted
general maxohvac:
- category: Business & Industrial > Hvac Refrigeration
shipping maxohvac:
- transit: 5-5 days
- type: fixed
- class: standard
- service: standard
seller maxohvac:
- # reviews: 1224240
- rating: 99.5%
- city: USA
offer maxohvac:
- sold #: 18
- in stock #: 5
- options: ship-to-home
- started: march 22, 2025
- availability: in stock
- prices: $700.00–$1768.36
- item condition:
- New
- New – Open box




