HGinline 40W Solar Attic Fan
#6 in Roof mountFull review
A flexible hybrid fan with speed control for a buyer who wants night running on a budget. The lack of a stated warranty is the main risk.
Amazon $299.99$299.99
The HGinline 40W Solar Attic Fan is the better solar attic fan overall, rated 3.4 to 2.9. The HGinline 40W Solar Attic Fan leads on features and panel. The DC House 32W Solar Attic Fan costs $150 less ($149.99 vs $299.99).
DC House 32W Solar Attic Fan
#10 in Roof mountFull review
A low cost, solar only fan for a shed, garage or small attic where any extra airflow helps. The airflow claim and short coverage make it a gamble for a whole house.
Amazon $149.99$149.99
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.
Which should you buy?
- Choose the HGinline 40W Solar Attic Fan for features (thermostat, AC backup, separate or tilting panel vs none of the three) and panel (40 W panel vs 32 W panel).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every roof mount solar attic fan; a clear win is highlighted. How we rank explains each one.
| Factor weight | HGinline 40W Solar Attic Fan | DC House 32W Solar Attic Fan |
|---|---|---|
| Overall rating | 3.4/5 | 2.9/5 |
| Value 25% | 71 $0.17 per CFM ($299.99, 1,800 CFM credited of 2,000 claimed (45 per panel watt)) | 98 $0.10 per CFM ($149.99, 1,440 CFM credited of 2,400 claimed (45 per panel watt)) |
| Airflow 15% | 63 1,800 CFM credited of 2,000 claimed (45 per panel watt) | 44 1,440 CFM credited of 2,400 claimed (45 per panel watt) |
| Panel 20% | 60 40 W panel | 44 32 W panel |
| Features 15% | 100 thermostat, AC backup, separate or tilting panel | 0 none of the three |
| Warranty 25% | 0 warranty not published, scored as none | 0 1-year warranty |
Specifications
| HGinline 40W Solar Attic Fan | DC House 32W Solar Attic Fan | |
|---|---|---|
| Airflow | ||
| Mount | Roof | Roof |
| Airflow | 2,000 CFM | 2,400 CFM |
| Attic area | 2,500 sq ft | 3,000 sq ft |
| Fan | 12 in | 9 in |
| Motor | brushless DC | brushless, IP68 |
| Power | ||
| Panel | 40 W | 32 W |
| Separate or tilting panel | Yes | - |
| Thermostat | Yes | - |
| AC backup | Yes | No |
| Build | ||
| Weight | 26.5 lb | - |
| Warranty | - | 1 year |