Insulation blower rental runs about $75 to $125 for a 24-hour period at big-box stores, but most homeowners pay nothing for it. Home Depot and Lowe’s waive the rental fee when you buy a set number of insulation bags, and a full attic job almost always buys enough bags to qualify. The machine that matters is a loose-fill blower: you feed bags in at ground level and it shreds and pushes the material through a long hose into the attic. This guide covers the real cost, which store to use for cellulose versus fiberglass, when free actually beats paid, and how to run the machine without a second person going quietly insane.
How much does an insulation blower rental cost?
A rented insulation blower typically costs $75 to $125 per 24-hour period as a straight rental, with local equipment yards sometimes reaching $150 a day for larger commercial units. Both major home-improvement chains waive that fee entirely when you buy enough insulation, so the effective rental cost for a real attic job is often $0. Deposits, when charged, are usually handled as a hold on your card rather than cash.
The paid daily rate only becomes the number you actually pay when your job is too small to hit the free-rental bag threshold. That happens with wall cavities, a small crawl space, or a minor attic top-up. For a whole attic, the bag count needed to reach your target R-value usually clears the free threshold on its own, which is the point most cost articles skip.
Which stores rent insulation blowers, and what are the free deals?
Home Depot, Lowe’s, and independent rental yards all rent loose-fill insulation blowers. The two big-box chains tie a free 24-hour rental to a minimum insulation purchase, while rental yards charge a flat daily rate with no purchase tie-in. The exact bag threshold and machine type vary by chain and by the insulation brand you buy, so confirm the current terms at your store before loading the truck.
| Source | Machine type | Free 24-hour rental | Typical paid rate | Deposit |
|---|---|---|---|---|
| Home Depot | Cellulose loose-fill blower (Greenfiber) | Often with 10 to 20 bags purchased | Around $75 to $125/day | Card hold |
| Home Depot | Owens Corning AttiCat (fiberglass expanding bagger) | With qualifying AttiCat bag purchase | Around $100+/day if not qualifying | Card hold |
| Lowe’s | AttiCat fiberglass blower | Often with 10 or more AttiCat bags | Around $75 to $125/day | Card hold |
| Rental yard (e.g. Sunbelt Rentals) | Cellulose or fiberglass blower | No free option | Around $100 to $150/day | Deposit varies |
Terms move around by region and season, so treat these as the pattern rather than a fixed quote. The reliable rule: buy your insulation and the machine, from the same chain, and the rental fee usually disappears.
Cellulose blower vs the AttiCat fiberglass bagger
The two machines you can rent are not interchangeable. A cellulose blower shreds loose recycled-paper insulation and moves it fast, on the order of 30 to 40 pounds per minute. The Owens Corning AttiCat is a fiberglass expanding machine that fluffs OC fiberglass, running slower at roughly 9 to 11 pounds per minute. AttiCat requires OC fiberglass bags and its own blower, which is why fiberglass blow-in is the Home Depot lane for that brand rather than a generic swap.
Match the machine to the material you bought. If you buy cellulose bags, you get the cellulose blower; if you buy Owens Corning AttiCat fiberglass, you get the AttiCat machine. You cannot run cellulose through an AttiCat or vice versa. For the tradeoffs between the two materials themselves, the cellulose vs fiberglass attic insulation comparison breaks down settling, R-value retention, and moisture behavior.
When the free rental actually beats paid rental
Free rental wins whenever your bag count reaches the store’s threshold, and for a full attic it almost always does. Cellulose covers roughly 30 to 40 square feet per bag at R-49, so a 1,000 square foot attic filled to code needs on the order of 25 to 40 bags. That clears a 10 to 20 bag free-rental threshold with room to spare, making the rental fee $0 without any special effort.
Paid rental only makes sense in three cases:
- Small square footage. A 200 to 400 square foot area may need fewer bags than the free threshold, so paying the flat daily rate can be cheaper than buying extra bags you do not need.
- You already own the insulation. If the bags came from a different supplier or a leftover job, a rental yard’s flat rate avoids a second purchase.
- Wall or crawl-space work. Dense-pack and small cavities use less material per job, so the free threshold is harder to reach.
Run your own numbers before you assume you will pay the daily rate. Plug your attic size and target R-value into the blow-in insulation calculator to get an honest bag count, then compare it to the store’s free threshold. If the calculator says 30 bags and the store waives the fee at 20, the machine is free.
How to use a rented insulation blower
Running a loose-fill blower is a two-person job: one feeds bags into the hopper at ground level, the other guides the hose in the attic. The machine ships in two parts for transport, most units self-feed and cut open the bags, and the hose runs about 100 feet, often with a wireless remote so the person in the attic can start and stop the flow. Plan on a helper and a phone or the remote before you climb up.
- Prep the attic first. Air-seal top plates, penetrations, and the attic hatch, and install baffles at the eaves so blown insulation does not block soffit venting. Do this before any material goes in.
- Set up the machine at ground level. Place it near a garage door or window, plug into a grounded circuit, and run the hose up to the attic access.
- Mark your depth. Staple depth-marker rulers to the joists at your target inches so you can see when you have hit R-value as you go.
- Feed and blow. The ground person loads bags at the pace the machine calls for; the attic person sweeps the hose in even passes, working from the far corners back toward the hatch.
- Blow yourself out. Finish at the access opening so you are never wading back through fresh loose fill, and hit the target depth over the hatch area last.
For the full sequence including air-sealing and cleanup, see attic insulation installation, and for how loose fill compares to batts on cost and R-value, the blown-in insulation guide covers the method end to end.
Rent a blower or hire a pro?
Renting and doing it yourself saves labor but costs a weekend and a helper; hiring a pro costs more but removes the setup, the two-person choreography, and the cleanup. For a straightforward open attic with good access, DIY blow-in is one of the higher-return jobs a homeowner can take on, because the machine is effectively free and the material is the main cost. Tight, low-clearance, or contaminated attics tilt the math toward a pro.
A related rental sits on the other side of the same job. If you are removing old or damaged material before you blow new insulation in, that uses a different machine covered in the insulation removal vacuum rental guide, not the blower described here. For where blow-in fits among all the options, the attic insulation hub lays out types, R-value by climate zone, and cost.
Frequently asked questions
How much does it cost to rent an insulation blower?
A straight rental typically costs $75 to $125 for 24 hours at big-box stores, and up to about $150 a day at independent rental yards. Home Depot and Lowe’s usually waive the fee when you buy a qualifying number of insulation bags, so a full attic job often costs $0 in rental. Any deposit is generally a hold on your card, not a cash charge.
Does Home Depot rent insulation blowers for free?
Home Depot waives the 24-hour blower rental when you buy enough insulation, commonly in the range of 10 to 20 bags depending on the product. Cellulose loose-fill and Owens Corning AttiCat fiberglass each pair with their own machine. Exact thresholds vary by store and season, so confirm the current terms at the rental desk before you buy your bags.
How many bags of insulation do you need for a free rental?
Most free-rental deals kick in around 10 to 20 bags, which a full attic usually exceeds on its own. Cellulose covers roughly 30 to 40 square feet per bag at R-49, so a 1,000 square foot attic needs about 25 to 40 bags. Calculate your bag count from your attic size and target R-value first, then compare it to the store threshold.
Can one person use an insulation blower?
A loose-fill blower is designed as a two-person job: one feeds bags into the hopper at ground level while the other directs the hose in the attic. Many machines self-feed and include a 100-foot hose with a wireless remote, which helps, but working solo means constant trips up and down and is slow and awkward. Plan on a helper.
Is it cheaper to rent a blower or hire a pro?
Renting is cheaper on cash outlay because the machine is often free with your bag purchase and you pay only for material. Hiring a pro costs more but removes setup, the two-person work, and cleanup, and suits tight or hard-access attics. For an open, walkable attic, DIY blow-in is one of the better-return projects a homeowner can take on.
How long does it take to blow insulation into an attic?
A typical 1,000 to 1,500 square foot attic often takes a two-person crew about 3 to 5 hours including setup, prep, and cleanup, well within a single 24-hour rental. Cellulose blows faster than fiberglass because the machine moves 30 to 40 pounds per minute versus roughly 9 to 11 for an AttiCat. Air-sealing and baffle work beforehand add time but should not be skipped.
Reviewed by The Roofing Brief Team. Last reviewed July 2026.