Modine Hot Dawg HD45
#10 in GasFull review
A proven two car garage heater from a commercial heating maker. Cheaper options give similar heat.
Amazon $963$963
The Modine Hot Dawg HD45 is the better garage heater overall, rated 2.5 to 2.2. The Modine Hot Dawg HD45 costs $236.99 less ($963 vs $1,199.99).
Modine Hot Dawg HDS30
#13 in GasFull review
A sealed combustion heater for a small woodshop or a garage with fumes or dust in the air. Pay the premium only if you need that.
Amazon $1,199.99$1,199.99
Prices were last checked November 2, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every gas garage heater; a clear win is highlighted. How we rank explains each one.
| Factor weight | Modine Hot Dawg HD45 | Modine Hot Dawg HDS30 |
|---|---|---|
| Overall rating | 2.5/5 | 2.2/5 |
| Value 40% | 28 $25.78 per 1,000 BTU ($963, 37,350 BTU/h) | 0 $48.19 per 1,000 BTU ($1,199.99, 24,900 BTU/h) |
| Controls 25% | 40 electronic ignition | 40 electronic ignition |
| Warranty 35% | 25 2-year warranty | 25 2-year warranty |
Specifications
| Modine Hot Dawg HD45 | Modine Hot Dawg HDS30 | |
|---|---|---|
| Heat | ||
| Heat output | 37,350 BTU/h | 24,900 BTU/h |
| Gas | Both | Both |
| Efficiency | 83% | 83% |
| Venting | Power vented | Direct vent |
| Controls and build | ||
| Thermostat | No | No |
| Remote or app | No | No |
| Electronic ignition | Yes | Yes |
| Weight | 72 lb | - |
| Warranty | 2 years | 2 years |