Modine Hot Dawg Garage Heater - 75K BTU/Direct Spark Ignition/LP/Single Stage w/Stainless Steel Heat Exchanger - HD75SS0121
Features
- Made in the USA
- Low profile, lightweight design easily installs 1” from ceiling with only two angle brackets (included)
- 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
- Right or left hand controls available on 30-75 units by rotating unit 180 degrees
- Power vented model simplifies side-wall or roof venting with small-diameter vent pipe
- Draws combustion air from inside the workspace
- 3" vent connection
- Liquid Propane
- 75,000 BTU
- Direct spark ignition
- Single stage - on/off operation
- Stainless steel heat exchanger
Specifications
| Fuel Type |
Propane |
| Control Type |
Electronic / IPI |
| Color / Finish |
Gray |
| Overall Size |
26.8" W × 19" H × 25" D |
What our Experts Think
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Powerful & Efficient Warmth: 75,000 BTU output provides strong, consistent heat for garages, workshops, and utility spaces.
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Propane Convenience: LP gas setup delivers reliable performance without needing natural gas hookups.
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Long‑Lasting Durability: Stainless steel heat exchanger resists corrosion and extends heater life in demanding conditions.
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Dependable Ignition: Direct spark ignition ensures quick, consistent starts every time.
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Straightforward, User‑Friendly Design: Single‑stage operation makes installation and maintenance simple.
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Versatile Use Cases: Ideal for garages, service bays, storage areas, sheds, and similar spaces needing dependable heating.
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Strong Market Appeal: Meets solid demand for robust, efficient propane garage heaters that balance performance, durability, and value.
Q&A
Q: What type of heater is the Modine HD75SS0121?
A: A 75,000 BTU liquid propane (LP) garage and workspace unit heater with a stainless steel heat exchanger.
Q: What is its heating capacity?
A: Delivers 75,000 BTU, ideal for medium to large garages, workshops, and utility spaces.
Q: What fuel and ignition system does it use?
A: Uses liquid propane (LP) with direct spark ignition for dependable starts and efficient performance.
Q: Is it single stage?
A: Yes — single stage for consistent and reliable heat output.
Q: What heat exchanger material is used?
A: Stainless steel heat exchanger for enhanced corrosion resistance and long service life.
Q: Where is this heater best used?
A: Best for garages, workshops, utility rooms, warehouses, and similar indoor spaces needing efficient supplemental heat.
Q: Does it require electricity?
A: Yes — uses standard electrical power for ignition and control functions.
Q: Is installation and maintenance easy?
A: Yes — designed with service‑friendly access and contractor‑friendly features for straightforward setup and servicing.
Maintenance Tips
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Clean Exterior Surfaces: Wipe the heater’s exterior regularly to remove dust and debris that can impede airflow.
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Inspect Heat Exchanger: Periodically check the stainless steel heat exchanger for buildup, corrosion, or damage to maintain efficient heat transfer.
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Burner Maintenance: Inspect and clean the burner assembly to support proper combustion and consistent performance.
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Check Ignition System: Verify that the direct spark ignition lights reliably and operates smoothly.
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LP Gas Line Safety: Inspect propane connections, fittings, and valves for secure fit and leaks; address any issues promptly.
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Keep Vent Areas Clear: Ensure intake and exhaust areas remain free of obstructions for safe, efficient heating.
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Annual Professional Service: Have a qualified technician perform yearly maintenance including safety checks and performance optimization.
Damage 
Loss 
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