Catalog · checked Oct 17, 2026
Bed fans that blow under the covers: bFan and BedJet by price and size
A bed fan blows air under the covers; bFan costs $184.46, listed on the bFan USA store on October 17, 2026. BedJet adds temperature control and heating rather than just moving room air.
Fans under the covers
Which bed fan fits your bed?
Choose bFan by bed height; distinguish a single BedJet unit from a Dual Zone package.
Measure from the floor to the top of your mattress, as Bedfans-USA instructs. The store names the options Short, 19–28 inches, and Tall, 28–38 inches. These are height choices, not mattress sizes.
BedJet's Queen Dual Zone package costs $969, listed on the BedJet store on October 17, 2026. BedJet says it includes two units and a Dual Zone Cloud Sheet; it is not simply a larger single fan.
| Brand | Model | What it does | Price |
|---|---|---|---|
| bFan | Short bFan 19″ – 28″ | Fan under the sheet, cools only | $184.46 |
| BedJet | one unit | Air unit, cools and heats | $498 |
| BedJet | Queen | Air unit, cools and heats | $969 |
bFan Short fits beds 19″–28″ high, Tall 28″–38″, as the store names them.
How a bed fan works
How does an under-sheet fan work?
bFan says it moves room air under the sheet to carry away heat trapped in bedding. It does not heat, uses no water in the bed and has nothing to refill.
bFan says placement can be along the side or at the foot of the bed. Its base can point under the bed or outward. The bFan review covers its fit and controls.
bFan moves the room's air through your bedding rather than supplying a heated airflow.
Fan or climate unit
What does BedJet add?
BedJet adds heating and temperature controls, but its cooling still depends on the room.
One BedJet 3 unit costs $498, listed on the BedJet store on October 17, 2026. BedJet says it sends temperature-controlled air through a hose and can heat as well as cool. Both systems have no subscription.
BedJet specifies 6 inches of clearance for under-bed placement, or placement beside the bed. Its minimum regulated temperature depends on bedroom conditions, so a temperature setting is not a promise of equally cold air in every room.
Running cost
What does the electricity cost?
BedJet lists cooling power at up to 40 W per unit. This site's estimate is up to $21 a year for cooling at full power for 8 hours across 365 nights, using the EIA's January–July 2026 US residential average of 18.19 cents per kWh.
That is an upper bound, not measured overnight use, and it excludes heating. A comparable bFan annual electricity estimate is not available.
The $21 estimate covers one BedJet unit cooling at full power, not heating or a dual-unit setup.
If air is not enough
What if airflow is not enough?
Water systems are a different cooling approach, not simply a stronger under-sheet fan.
The Chilipad Cube water pad starts at $699, listed on the maker's store on October 17, 2026. It cools and heats through a water pad rather than blowing air under the covers.
That changes what goes on the mattress, not just the price. Compare bed cooling systems if choosing between air under the sheet and a water-based layer.
bFan
from $184.46Fan under the sheet; cools only.
BedJet 3
from $498Air under the covers; cools and heats.
Chilipad Cube
from $699Water pad; cools and heats.
Stores in this catalog
Buttons open the store in a new tab. Some are affiliate links; prices on this page carry the date they were checked.
Questions
Bed fans questions
People also search for “bed fan under sheets”, “under sheet fan”, “bed cooling fan”.
Is bFan a quiet bed fan?
bFan describes its fan as quiet and adjustable. BedJet calls its airflow whisper-quiet. Neither publishes a decibel figure in the pages checked, so those claims do not establish which is quieter.
Can a bed fan blow only on my side?
bFan says its adjustable airflow can be directed toward your side of the bed. BedJet offers a Dual Zone package with separate units and a Dual Zone Cloud Sheet.
Does an under-sheet fan use water?
bFan and BedJet use air under the covers, with no water in the bed. bFan has nothing to refill; BedJet instructs owners to rinse its washable foam filter every 3 months.
Does a bed cooling fan also heat?
bFan does not heat. BedJet says its system both cools and heats, so the two products serve different needs when warmth is also wanted.
Sources
- 1bFan® – Bed Fan with Wireless Remotebedfans-usa.com · checked Oct 17, 2026
- 2The New bFan® | Built in Texasbedfan.com · checked Oct 17, 2026
- 3BedJet 3 Bed Climate Control Comfort Systembedjet.com · checked Oct 17, 2026
- 4BedJet 3 Dual Zone Climate Comfort System Sleep Technologybedjet.com · checked Oct 17, 2026
- 5BedJet: air filterbedjet.com · checked Oct 17, 2026
- 6EIA Electric Power Monthly, Table 5.6.Beia.gov · checked Oct 17, 2026