Modine Hot Dawg Garage Heater - 125K BTU/Direct Spark Ignition/LP/Single Stage w/Stainless Steel Heat Exchanger 
Features
- Made in the USA
 
- Low profile, lightweight design easily installs 1” from ceiling with only two angle brackets (sold separately)
 
- Field fuel conversion kits available
 
- Finger-proof fan guards on all units
 
- Reduce the need for maintenance with the permanently lubricated motor
 
- 100% shut-off with continuous retry to allow for safe ignition in the event the unit doesn’t light on the first try
 
- Power vented model simplifies side-wall or roof venting with small-diameter vent pipe
 
- Draws combustion air from inside the workspace
 
- 4" vent connection
 
- Liquid Propane
 
- 125,000 BTU
 
- Direct spark ignition
 
- Single stage - on/off operation
 
- Stainless steel heat exchanger
 
Specifications
| Fuel Type | 
Propane | 
| Control Type | 
Electronic/IPI | 
| Color/Finish | 
Gray | 
| Size | 
35.5"W x 20.5"T x 31"D | 
What Our Experts Think
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Powerful Heating: 125,000 BTUs efficiently warm large garages, workshops, and small commercial spaces.
 
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Direct Spark Ignition: Ensures quick, reliable startups with minimal energy waste.
 
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Propane-Powered (LP): Ideal for areas without natural gas access, offering cost-effective heating.
 
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Stainless Steel Heat Exchanger: Corrosion-resistant for enhanced durability in harsh environments.
 
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Single-Stage Operation: Provides steady, controlled heat with simple functionality.
 
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Compact, Ceiling-Mount Design: Saves floor space and allows for flexible installation.
 
Q&A
Q: What type of ignition does it use?
A: It features a direct spark ignition (DSI) system, eliminating the need for a standing pilot light and ensuring consistent operation.
Q: What size space does this heater cover?
A: It can effectively heat garages, workshops, and small commercial spaces up to approximately 6,250 sq. ft., depending on insulation and layout.
Q: Does this heater require ventilation?
A: Yes, proper venting is required for safe operation, and professional installation is recommended.
Q: Is this unit energy-efficient?
A: Yes, it is designed for high efficiency, optimizing propane usage while maintaining consistent heat output.
Maintenance Tips
- 
Clean Burners Regularly – Remove dust and debris to ensure efficient combustion and reliable ignition.
 
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Inspect Gas Lines & Connections – Check for leaks and ensure secure fittings for safe operation.
 
- 
Keep Air Intake & Exhaust Vents Clear – Prevent blockages to maintain proper airflow and avoid overheating.
 
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Maintain Stainless Steel Heat Exchanger – Clean periodically for optimal heat transfer and efficiency.
 
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Test Direct Spark Ignition – Ensure proper function to prevent startup failures.
 
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Check Thermostat Accuracy – Verify settings for consistent and efficient temperature control.
 
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Annual Professional Inspection – Schedule a yearly checkup to ensure safety and peak performance.