By The Roofing Brief Team. Last reviewed: October 2026.
Insulation blower rental is often free. Owens Corning’s AttiCat rental guide gives 24 hours free with the machine when you buy 10 bags of AttiCat insulation at a participating Lowe’s or The Home Depot, and Home Depot waives the first day’s blower rental with a minimum loose-fill purchase, which its October 2026 listings put at 10 or 20 bags depending on the product. A 1,000 sq ft attic at R-49 takes 25 AttiCat bags or 68.5 Greenfiber SANCTUARY bags, so a full attic job almost always qualifies. If you do not qualify, an independent yard such as A1 Tool Rental lists a blower with 100 ft of hose at $72 for 4 hours, $113 a day or $342 a week. The machine 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.
How much does an insulation blower rental cost?
For most attic jobs, a rented insulation blower costs $0, because the stores waive the fee when you buy enough insulation. If your job is too small to qualify, or you rent from an independent equipment yard, you pay a daily rate set by each store; A1 Tool Rental’s posted $113 daily rate is one published example, and Home Depot and Lowe’s quote theirs at the rental desk. Owens Corning notes that a daily fee may apply if you keep the AttiCat past its free 24 hours.
| Rental source | Free terms | Paid rate | Source |
|---|---|---|---|
| Home Depot (cellulose blower) | First day free with 10 or 20 loose-fill bags, by listing | Ask the rental desk | Home Depot listings, Oct 2026 |
| Home Depot or Lowe’s (AttiCat) | 24 hours free with 10 bags of AttiCat | Daily fee may apply after 24 hours | Owens Corning AttiCat rental guide; Lowe’s AttiCat listing |
| Lowe’s (cellulose blower) | Free 24-hour rental with 20 bags of SANCTUARY | Ask the rental desk | Lowe’s SANCTUARY listing |
| A1 Tool Rental (independent yard) | None | $72 per 4 hours, $113 per day, $342 per week | A1 Tool Rental listing, Oct 2026 |
The paid daily rate only becomes the number you 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: at R-49, 20 SANCTUARY bags cover about 292 sq ft (14.6 sq ft per bag) and 10 AttiCat bags about 399 sq ft (39.9 sq ft per bag). For a whole attic, the bag count needed to reach your target R-value clears the free threshold on its own.
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 big-box chains tie a free 24-hour rental to a minimum insulation purchase of 10 or 20 bags, while rental yards such as A1 Tool Rental charge a flat rate ($113 a day) with no purchase tie-in. The bag threshold and machine type differ 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 | If you do not qualify |
|---|---|---|---|
| Home Depot | Loose-fill blower for cellulose (for example Greenfiber) | First day free with a minimum loose-fill purchase: 10 or 20 bags depending on the listing in October 2026, with 20 on the Greenfiber SANCTUARY listing | Daily rate; ask the rental desk |
| Home Depot or Lowe’s | Owens Corning AttiCat (fiberglass expanding blower) | 24 hours free with 10 bags of AttiCat, per Owens Corning’s rental guide | Daily fee may apply |
| Lowe’s | Loose-fill blower for cellulose | Free 24-hour machine rental with purchase of 20 bags, per Lowe’s Greenfiber SANCTUARY product listing | Ask the rental desk |
| Independent rental yard | Cellulose or fiberglass blower | No free option | Flat rate, for example $113 per day at A1 Tool Rental |
Sources: Owens Corning AttiCat Machine Rental Guide, Pub. No. 10028802; Home Depot blower rental and Greenfiber SANCTUARY listings checked October 2026 (versions of Home Depot’s cellulose blower listing state 10 or 20 bags); Lowe’s Greenfiber SANCTUARY and AttiCat product listings; A1 Tool Rental listing. 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 once you pass 10 bags (AttiCat, about 399 sq ft at R-49) or 20 bags (cellulose, about 292 sq ft at R-49).
Cellulose blower vs the AttiCat fiberglass bagger
The two machines you can rent are not interchangeable. A cellulose blower shreds loose recycled-paper insulation; Greenfiber’s DIY attic instructions (DM-6.3-38 Rev F) say it takes 2 to 3 minutes to blow one 25-lb bag, or roughly 8 to 12.5 pounds per minute. The Owens Corning AttiCat is a fiberglass expanding machine that fluffs OC fiberglass, and Owens Corning’s AttiCat troubleshooting guide gives a normal rate of approximately 7 pounds per minute, or 4 to 5 minutes per bag. AttiCat requires OC AttiCat bags and its own machine, and Owens Corning’s rental guide lists both Lowe’s and The Home Depot as rental locations. For bag counts, depth and rental terms in detail, see our Owens Corning AttiCat review.
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. Greenfiber rates SANCTUARY at R-3.7 per inch with 27.4 sq ft per bag at R-30. For the tradeoffs between the two materials themselves, the cellulose vs fiberglass attic insulation comparison breaks down settling, R-value retention, and moisture behavior.
| Spec | Greenfiber SANCTUARY (cellulose) | Owens Corning AttiCat (fiberglass) | Source |
|---|---|---|---|
| Blowing rate | 2 to 3 minutes per bag | About 7 lb per minute, 4 to 5 minutes per bag | Greenfiber DM-6.3-38; OC troubleshooting guide |
| Bags per 1,000 sq ft at R-30 | 36.5 (gross, 2×6 at 16 in o.c.) | 14.6 | Greenfiber DM-6.3-38; AttiCat data sheet, May 2026 |
| Bags per 1,000 sq ft at R-38 | 50.1 (gross) | 19 | Greenfiber; AttiCat data sheet |
| Bags per 1,000 sq ft at R-49 | 68.5 (gross); 70.8 (net) | 25 | Greenfiber; AttiCat data sheet |
| Thickness at R-49 | 14.3 in installed, 13.3 in settled | 17 in minimum | Greenfiber; AttiCat data sheet |
| Power | 20-amp, 110-volt outlet; 12-gauge cord no longer than 50 ft | Per rental desk | Greenfiber DM-6.3-38 |
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. Greenfiber’s SANCTUARY attic coverage chart (DM-6.3-38 Rev F) gives two R-49 figures: 14.6 square feet per 25-lb bag, or 68.5 bags per 1,000 square feet, in its gross-coverage column based on 2×6 framing on 16-inch centers, and 14.1 square feet per bag, or 70.8 bags, in its net column with no adjustment for framing. This page uses the 68.5 framing-adjusted figure. The Owens Corning AttiCat product data sheet (May 2026) calls for 25 bags per 1,000 square feet at R-49. Either way, a 1,000 square foot attic filled to R-49 clears a 10-bag or 20-bag free-rental threshold with room to spare.
Paid rental only makes sense in three cases:
- Small square footage. A 200 to 400 square foot area at R-49 may need fewer bags than the free threshold, so paying a flat rate such as A1 Tool Rental’s $72 for 4 hours 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 ($113 a day at A1 Tool Rental) 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.
Free or paid: decision table
| If your job is | Bags needed (R-49) | Best rental route | Source |
|---|---|---|---|
| Whole attic, 1,000 sq ft, cellulose | 68.5 SANCTUARY bags | Free 24-hour rental at Home Depot or Lowe’s | Greenfiber DM-6.3-38 |
| Whole attic, 1,000 sq ft, fiberglass | 25 AttiCat bags | Free 24-hour AttiCat rental | AttiCat data sheet |
| Under about 292 sq ft, cellulose | Fewer than 20 bags | Compare buying to the 20-bag threshold vs a paid 4-hour yard rental | Greenfiber; A1 Tool Rental |
| Under about 399 sq ft, AttiCat | Fewer than 10 bags | Compare buying to 10 bags vs a paid rental | AttiCat data sheet |
| Bags bought elsewhere | Any | Independent yard flat rate | A1 Tool Rental |
| Vermiculite in the attic | Any | Do not blow over or disturb it; get a pro assessment | EPA |
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 a bag count, then compare it to the store’s free threshold. A 1,000 sq ft attic at R-38 takes 50.1 SANCTUARY bags or 19 AttiCat bags, so the machine is free at either chain. If you are still choosing a material, see our guide to the cheapest way to insulate an attic.
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 AttiCat rental includes the machine base and top feeder, a hose assembly and a remote, per Owens Corning’s rental guide, and Greenfiber’s instructions call for 100 feet of blowing hose in two 50-foot sections, one steel tube connector and three clamps. Test the machine at the store before you leave.
- Prep the attic first. Air-seal top plates, penetrations, and the attic hatch, and install soffit vent chutes at the eaves so blown insulation does not block soffit venting. Greenfiber says to keep a 3-inch clearance around recessed lights and other heat sources, citing 16 CFR 1404.4, using a metal barrier rather than paper or cardboard.
- Set up the machine at ground level. Place it on a level surface near a garage door or window, plug it into a 20-amp, 110-volt outlet, and use at least a 12-gauge extension cord no longer than 50 ft, per Greenfiber. Run the hose up to the attic access with no sharp turns.
- Mark your depth. Staple depth-marker rulers to the joists at your target: for R-49, 14.3 in installed for SANCTUARY cellulose or 17 in for AttiCat, so you can see when you have hit R-value as you go.
- Feed and blow. The ground person loads roughly 15 lb at a time and breaks up the material, since Greenfiber says the hopper holds up to 30 lb; the attic person sweeps the hose in even passes, working from the far corners back toward the hatch. Both wear eye protection and an N95 mask.
- Blow yourself out. Finish at the access opening so you are never wading back through fresh loose fill, and hit the target depth, 14.3 in for SANCTUARY at R-49, over the hatch area last.
For the full sequence including air-sealing, the 3-inch recessed-light clearance 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 removes the setup, the two-person work, and the cleanup. For an open attic with good access, the rental math is simple: the machine is often free at 10 or 20 bags, so material is the main cost, and Owens Corning says AttiCat can cover a 1,000 sq ft attic to R-30 in under 1.5 hours. Low-clearance attics and attics with vermiculite tilt the math toward a pro: the EPA says to assume vermiculite contains asbestos and not to disturb it. If you do take it on, our DIY attic blow-in guide covers the full job step by step.
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, a vacuum that pulls material out rather than a blower with 100 ft of hose, 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?
Often nothing. Owens Corning gives 24 hours free with the AttiCat machine when you buy 10 bags at a participating Lowe’s or Home Depot, and Home Depot waives the first day’s loose-fill blower rental with a minimum purchase, 10 or 20 bags depending on the product in its October 2026 listings. If your job does not qualify, independent yards charge a flat rate; A1 Tool Rental lists $72 for 4 hours or $113 a day.
Does Home Depot rent insulation blowers for free?
Home Depot waives the first day’s blower rental when you buy enough loose-fill insulation: its October 2026 listings state 10 or 20 bags depending on the product, with 20 on the Greenfiber SANCTUARY cellulose listing. Cellulose loose-fill and Owens Corning AttiCat fiberglass each pair with their own machine, and Owens Corning’s rental guide lists both Home Depot and Lowe’s for the AttiCat. Confirm at the rental desk before you buy your bags.
How many bags of insulation do you need for a free rental?
The AttiCat deal starts at 10 bags, Home Depot’s loose-fill listings state 10 or 20 bags depending on the product, and Lowe’s SANCTUARY listing advertises free rental with 20 bags; a full attic usually exceeds either on its own. Greenfiber’s SANCTUARY chart gives 68.5 bags per 1,000 square feet at R-49 with 2×6 framing on 16-inch centers, or 70.8 bags with no adjustment for framing, and Owens Corning’s AttiCat data sheet calls for 25 bags per 1,000 square feet at R-49.
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. The AttiCat rental includes a remote and Greenfiber’s setup uses 100 feet of hose, but working solo means climbing down every time the 30 lb hopper empties. 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 10 or 20 bags 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, Owens Corning says AttiCat can cover 1,000 square feet to R-30 in under 1.5 hours.
How long does it take to blow insulation into an attic?
At the manufacturers’ stated rates, blowing a 1,000 square foot attic to R-49 takes about 1.7 to 2.1 hours for 25 AttiCat bags at 4 to 5 minutes each, or about 2.3 to 3.4 hours for 68.5 SANCTUARY cellulose bags (the framing-adjusted R-49 count) at 2 to 3 minutes each. Setup, air sealing, baffles and cleanup come on top, and the job should still fit within a single 24-hour rental.