Best Solar Fan for Small Greenhouse (2026): 5 Compared by Spec

The listing states a 10-inch exhaust fan with 660 CFM for spaces up to 1100 cubic feet, a 5000mAh battery for 6 hours after a full charge, two 15W bifacial panels generating up to 22W, a smart thermostat for automatic on and off, an intelligent switch between sun and battery power, an IP44 rating on the fan blades, a 14.8-foot cable, and 6.05 kilograms. The spec table lists 30W against the two 15W panels. No warranty term is stated.

Who it's for: small greenhouses that need the most stated airflow with night run time. Who should skip it: buyers who want a stated warranty or the highest ingress rating.

Its Solar Score of 9.6/10 comes from performance 30/35, build 21/25, value 21/25, safety 5/10 and warranty 0/5: 77 of 100 points, placed on our 9.2 to 9.8 scale.

Figures as published on the retailer listing, collected 20 October 2026. Performance figures are manufacturer rated.

What this listing states. IP44 rating stated in the listing, so safety scores 5 of 10. No warranty term, so warranty scores zero. See How We Pick.

Fans and pumps. Keep fingers and cords away from moving blades and intakes, run pumps only submerged as the maker directs, and treat airflow and flow rates as the maker's figures.

This is general buying information, not professional advice. Follow each product manual and local rules, and see our Safety Disclaimer.

The listing states a 12W solar panel with 16V output, a 4.72 by 4.72 inch fan, an 11 by 11 inch panel, a 3.28-foot connection line, up to 200 CFM of airflow, a 3000 RPM maximum fan speed, an IP65 rating, and a coated fan motor against short circuit or rain damage. The fan runs on sunlight only, with no battery storage. No warranty term is stated.

Who it's for: small coops, sheds and greenhouses that need daytime exhaust. Who should skip it: anyone who needs night ventilation or a stated warranty.

Its Solar Score of 9.6/10 comes from performance 28/35, build 21/25, value 20/25, safety 7/10 and warranty 0/5: 76 of 100 points, placed on our 9.2 to 9.8 scale.

Figures as published on the retailer listing, collected 20 October 2026. Performance figures are manufacturer rated.

What this listing states. IP65 rating stated in the listing, so safety scores 7 of 10. No warranty term, so warranty scores zero. See How We Pick.

Fans and pumps. Keep fingers and cords away from moving blades and intakes, run pumps only submerged as the maker directs, and treat airflow and flow rates as the maker's figures.

This is general buying information, not professional advice. Follow each product manual and local rules, and see our Safety Disclaimer.

The listing states a 12W solar panel, a 4.72 by 4.72 inch fan, an 11 by 11 inch panel, a 3.2-foot line, 3000 RPM maximum, an IP67 rating, a brushless motor, a metal mesh guard, a 40 db noise level, and daytime-only operation with no built-in battery. No warranty term is stated.

Who it's for: humid greenhouses that want the highest stated ingress rating. Who should skip it: buyers who need a stated CFM figure or night run time.

Its Solar Score of 9.5/10 comes from performance 27/35, build 21/25, value 20/25, safety 7/10 and warranty 0/5: 75 of 100 points, placed on our 9.2 to 9.8 scale.

Figures as published on the retailer listing, collected 20 October 2026. Performance figures are manufacturer rated.

What this listing states. IP67 rating stated in the listing, so safety scores 7 of 10. No warranty term, so warranty scores zero. See How We Pick.

Fans and pumps. Keep fingers and cords away from moving blades and intakes, run pumps only submerged as the maker directs, and treat airflow and flow rates as the maker's figures.

This is general buying information, not professional advice. Follow each product manual and local rules, and see our Safety Disclaimer.

The listing states a 15W solar panel with battery backup, a 3 or 6 hour timer that works at night and must be pressed when dark, an IP65 rating, ABS and metal construction with metal mesh on both sides, 3 pounds, and a 16.4-foot cable. No battery capacity figure and no warranty term are stated.

Who it's for: coops and sheds that need night air with a timer. Who should skip it: buyers who want a stated battery capacity or warranty.

Its Solar Score of 9.5/10 comes from performance 28/35, build 20/25, value 20/25, safety 7/10 and warranty 0/5: 75 of 100 points, placed on our 9.2 to 9.8 scale.

Figures as published on the retailer listing, collected 20 October 2026. Performance figures are manufacturer rated.

What this listing states. IP65 rating stated in the listing, so safety scores 7 of 10. No warranty term, so warranty scores zero. See How We Pick.

Fans and pumps. Keep fingers and cords away from moving blades and intakes, run pumps only submerged as the maker directs, and treat airflow and flow rates as the maker's figures.

This is general buying information, not professional advice. Follow each product manual and local rules, and see our Safety Disclaimer.

The listing states one solar panel with two fans, a 10W maximum with 12V output, an IP65 rating, USB connectors on the panel, a monocrystalline silicon panel, plastic fan shells with iron mesh nets on both sides, 15.16 by 7.48 by 2.17 inches, and 1.6 pounds. The fans run on sunlight. No warranty term is stated.

Who it's for: small spaces that want two fans from one panel. Who should skip it: buyers who need a stated CFM figure or night run time.

Its Solar Score of 9.5/10 comes from performance 27/35, build 20/25, value 20/25, safety 7/10 and warranty 0/5: 74 of 100 points, placed on our 9.2 to 9.8 scale.

Figures as published on the retailer listing, collected 20 October 2026. Performance figures are manufacturer rated.

What this listing states. IP65 rating stated in the listing, so safety scores 7 of 10. No warranty term, so warranty scores zero. See How We Pick.

Fans and pumps. Keep fingers and cords away from moving blades and intakes, run pumps only submerged as the maker directs, and treat airflow and flow rates as the maker's figures.

This is general buying information, not professional advice. Follow each product manual and local rules, and see our Safety Disclaimer.