STERLING HSB14411 Hot-Water Unit Heater | Montreal, Laval, Longueuil, South Shore & North Shore
Sterling HSB14411 horizontal hot-water unit heater: 104,000 BTU/h with 200°F water, 2,200 CFM blown at 1,000 FPM, for large storage and service buildings.
Model numberHSB14411
514 316-2973 · sales@airgreen.ca
Quick facts
104,000 BTU/h at 200°F, provided you know your water
Two buildings, the same unit
Take two buildings equipped with the same Sterling HSB14411. The first is heated by an electric boiler supplying 180°F water. The second, by an air-to-water heat pump supplying 120°F. Sterling rates the unit at 104,000 BTU/h with 200°F entering water, 60°F entering air and a 20°F drop. But its correction factors give 0.857 in the first case and 0.429 in the second. Same model, same airflow, very different heat.
That is why we never choose a unit heater on its rating alone. We start from the actual water temperature of your installation, then the heat-loss calculation, and only then the size. The other published factors are 0.715 at 160°F, 0.571 at 140°F and 0.286 at 100°F.
What the HSB14411 does
This horizontal unit heater from the HS series hangs from the ceiling, circulates the water from your loop through a standard header-type coil and blows 2,200 CFM of warmed air, at 1,000 FPM at the outlet. It suits winter storage buildings for boats or recreational vehicles, dealership service shops, distribution warehouses and plants with a central electric boiler, whether in Laval, on the North Shore or on the South Shore.
The 1/3 HP motor is single speed and runs on 115 V, single phase, 60 Hz; Sterling does not publish a reduced-speed rating for this model. On the loop side, it takes 10.4 GPM with a 20°F drop, for a pressure drop of 0.43 ft H2O. In a lightly heated winter storage building, the loop can contain propylene glycol: Sterling publishes correction factors for that mix. The coil is rated up to 150 PSI (1,034 kPa) or 320°F (160°C) on hot water.
Installation by AirGreen
After the visit and the calculation, we confirm with Sterling the weight and dimensions, which are not in the data we verified, then check the structure. Our technicians hang the unit heater by rods, level, connect it to the loop with isolation valves and air purging, make the 115 V electrical connection and the control, then start everything up while measuring the water flow.
AirGreen is a family business established in Montreal for more than fifteen years, holding RBQ licence 5645-9605-01 (ventilation, refrigeration and electrical). We work in Montreal, Longueuil and throughout the greater region.
Let’s do the calculation for your building
Ask for a free on-site estimate. Your written quote states the water temperature used and the resulting corrected output, and financing is available.
For large storage and service buildings
The HSB14411 blows 2,200 CFM from the ceiling using water from your electric boiler or air-to-water heat pump. Its actual output depends first and foremost on the temperature of that water.
- Winter storage building for boats or recreational vehicles
- Dealership service shop
- Distribution warehouse
- Plant with a central electric boiler
Specifications
From the manufacturer’s documentation. A value the manufacturer does not publish is not listed.
What to know before installing
- The same rating does not give the same heat everywhere: Sterling applies 0.857 at 180°F, but 0.429 at 120°F. The choice is made with your installation’s temperature.
- The circuit must supply 10.4 GPM with a 20°F drop; pressure drop of 0.43 ft H2O.
- Single-speed 1/3 HP motor, 115 V, single phase, 60 Hz. No reduced-speed rating is published for this model.
- Weight and dimensions are not in the verified data: we confirm them with Sterling and check the structure before installation.
Manufacturer documents
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Frequently asked questions
Why does the same unit heat less in another building?
Because its output depends on water temperature. Sterling publishes a factor of 0.857 at 180°F and 0.429 at 120°F on the 104,000 BTU/h rating measured at 200°F. A building on a low-temperature air-to-water heat pump therefore gets less heat from the same unit.
Does the 1/3 HP motor run on 115 V?
Yes. The HSB14411 runs on 115 V, single phase, 60 Hz, with a single-speed 1/3 HP motor.
What water flow and pressure drop?
10.4 GPM with a 20°F drop, for a pressure drop of 0.43 ft H2O. We account for it when choosing the circulator.
Can it be used in a lightly heated winter storage building?
Yes, if the loop is protected against freezing. With propylene glycol, the correction factors Sterling publishes apply, and we build them into the calculation.
An HSB14411 chosen for your water, installed by AirGreen
Tell us about your project: we check the sizing, confirm availability and send you a quote. Or let our technicians install it for you.
Specifications from the manufacturer’s documentation, checked on October 19, 2026.