King’s HM / HME Series medium hydronic heater uses the energy from a building’s existing hot water source to offer efficient, whisper quiet operation and the ability to reduce utility bills with individual room control. By installing hydronic heaters in every room, you can easily heat only the areas in use and conserve energy. Designed to fit neatly between standard wall studs, this in-wall heater provides out of the way positioning ideal for use in bedrooms, bathrooms, and laundry rooms. For use in both residential and commercial applications. Provides 3,300 to 18,700 Btu heat output.
- In-wall, Fan-Driven, Zone-Controlled Heat
- Heat Only The Rooms Which Need It, Borrowing Energy From What’s Already There: The Hot Water Heater
- Compatible With Typical Hot Potable Water Sources
- Tangential Blowers For Whisper Quiet Operation
- Fast Coil Heating For Heat Transfer
- 1/2” Trade Size Copper Tubes
- Flow-Through Design
- 4 or 8 Aluminum fins per inch
- Permanently Lubricated Motor
- Hi / Off / Lo Fan Switch
- Aqua Stat Included
- For Use With HW Series Thermostats
- ETL Certified for USA and Canada
- Proudly Made in the USA with U.S. & Global Materials
- 2-year limited warranty
Borrow Energy From The Hot Water Heater
Hydronic heaters use hot water from home’s hot water tank and gently recirculates heat throughout the room. Heat only the rooms which need it, borrowing energy from what’s already here: the hot water heater.
Now That’s Smart!
Quiet, Cost-Saving Zone Control
King’s hydronic system offers cost-saving zone control, heat source sharing, near silent operation, quality construction, and easy installation.
Available Models
Ordering Information
| MODEL | Water Pressure Drop at 2 GPM | 120ºF 48ºC | 140ºF* 60ºC | 160ºF* 71ºC | 180ºF 82ºC 200ºF MAX | Motor Hi/Lo CFM | Decibels at 3-ft distance | Hi/Lo: Amps Hi/Lo: Watts |
|---|---|---|---|---|---|---|---|---|
| HM812-6/9 | 0.72 | 4800 Btu | 6250 Btu | 9500 Btu | 13700 Btu | 3 watt output | Hi 55 dbA | .30 / .29 Amps |
| 3300 Btu | 4900 Btu | 7100Btu | 11000 Btu | 250 / 150CFM | Lo 52 dbA | 36 / 34.8 Watts | ||
| HM812-8/11 | 0.72 | 6000 Btu | 8550 Btu | 11200 Btu | 14800 Btu | 5 watt output | Hi 62 dbA | .42 / .38 Amps |
| 4800 Btu | 7100 Btu | 8000 Btu | 11000 Btu | 375 / 220 CFM | Lo 58 dbA | 50.4 / 45.6 Watts | ||
| HM1012-10/13 | 0.9 | 7500 Btu | 10000 Btu | 13500 Btu | 16600 Btu | 3 watt output | Hi 55 dbA | .30 / .29 Amps |
| 5500 Btu | 7900 Btu | 9750 Btu | 12000 Btu | 250 / 150CFM | Lo 52 dbA | 36 / 34.8 Watts | ||
| HM1012-11/15 | 0.9 | 8812 Btu | 11700 Btu | 15500 Btu | 18700 Btu | 5 watt output | Hi 62 dbA | .42 / .38 Amps |
| 600 Btu | 8800 Btu | 11600 Btu | 14000 Btu | 375 / 220 CFM | Lo 58 dbA | 50.4 / 45.6 Watts |
Ordering Information
| Energy saver ECM Motor | Water Pressure Drop at 2 GPM | 120ºF 48ºC | 140ºF* 60ºC | 160ºF* 71ºC | 180ºF 82ºC | Progressive CFM | RUN / START | Energy Saver Hi/Lo: Amps Hi/Lo: Watts |
|---|---|---|---|---|---|---|---|---|
| HME 812-8/11 | 0.72 | 6000 Btu | 8550 Btu | 11200 Btu | 14800 Btu | 150 to 375 High | Hi 57 / 54 dbA | .06 / .04 Amps |
| 4800 Btu | 7100 Btu | 8000 Btu | 11000 Btu | 150 to 250 Low | Lo 54 /51 dbA | 7.2 / 4.8 Watts | ||
| HME1012-11/15 | 0.9 | 8812 Btu | 11700 Btu | 15500 Btu | 18700 Btu | 150 to 375 High | Hi 63 / 60 dbA | .09 / .06 Amps |
| 6600 Btu | 8800 Btu | 11600 Btu | 14000 Btu | 150 to 250 Low | Lo 54 / 51 dbA | 10.8 / 7.2 Watts |
Engineering Specs
Contractor shall supply and install HM/HME Series hydronic fan heaters manufactured by King Electrical Mfg. Co., Seattle, Washington.
Motor: 2 speed shaded pole impedance protected. Permanently lubricated. Bronze bearings.
Blower: Tangential blower to provide 150-375 CFM of air. Quiet operation of less than 53 dB A weighted scale at high speed. Easily removed for service. Bronze, not plastic, bearings.
Coils: 1/2″ OD Copper tubes with Aluminum fins of no more than 4 fins per inch for free flow of air and maximum circulation of air and water. Tested at 300 PSI for leaks. Bleed valve to purge air. Copper tube used in coils is Alloy 122 made to ASTM B-75 specifications.
Grill: 20 gauge mild Steel, louvered with Nickel-plated grille screws. Powder-coated in white.
Wall Can: 20 gauge mild Steel, electro-galvanized to resist corrosion. 1/2″ knockout in bottom of can and QuickSetTM bend out mounting tabs for fast installation.
Fan Switch: 3 position fan switch High / Off / Low. Rated at 10 Amps with wire leads and insulated 1⁄4″ quick connects.
Aqua Stat: Ensures the water temperature is over 115°F before the fan turns ON
Terminal Board: All electrical connections will terminate at a phenolic terminal board with 1⁄4″ male brass blades for easy wiring.
Water Connections: 1/2″ bare Copper tubes de-burred. Tested at 300 PSI for leaks. Clean out tubes for water connection.
Approvals: ETL (3131491PRT-001). All King heaters are tested to UL 1995 Standards. Approved for USA and Canada. CSA/C22.2.
Related Products
Model H
- 120 volt fan motor
- 1,200 to 10,500 Btu
Fan driven hydronic heater for use with hot water from any energy source. The small size and quiet operation make it perfect for bedrooms.
Model HT
- 120 volt fan motor
- 1,600 to 9,950 Btu
Fan driven Hydronic toe-space unit for kitchen and under-cabinet applications.
Model HL and HLE
- 120 volt fan motor
- 4,700 to 27,250 Btu
Fan driven hydronic heater for use with hot water from any energy source. The large size and quiet operation make it perfect for larger living spaces.
Model HSB
- 2', 3', 4', 5', 6', 7', 8', 9', 10'
- 400 to 1,000 Btu
No drafts no cold spots. 5" high x 3" wide. It is ideal for residential, apartment and commercial applications. Custom lengths available.