225 vs 250 for brisket (hours and pellets)

People search "225 or 250 brisket" looking for a winner. Hold protein and weight still. Only flip the set point. The calculator scales hours by (225 / target)^0.85 and burn by (target / 225)^1.2. Hours drop. Pounds per hour rise. Read the methodology if you want the exponents written out.

Same 12 lb packer, 225 F versus 250 F

Overnight brisket profile, generic 0.85 lb/hr seed, mild weather, 18 lb hopper:

• 225 F: about 16 hours 30 minutes, 14.4 lb, 0.85 lb/hr. Overnight warning. About 3.6 lb left on paper.
• 250 F: about 15 hours 5 minutes, 14.9 lb, 0.96 lb/hr. Still an overnight warning. About 3.1 lb left.

You save about an hour and a half. You do not save the bag. On this baseline, 250 F uses a little more fuel because burn climbs faster than the clock shrinks. Pellets per hour is the burn-rate chart behind that trade.

Weight ladder, same two dials

Keep mild weather and the generic seed. Only change weight and set point.

• 10 lb at 225 F: about 14 hours, 12.3 lb. 10 lb at 250 F: about 12 hours 48 minutes, 12.7 lb.
• 14 lb at 225 F: about 19 hours, 16.5 lb. 14 lb at 250 F: about 17 hours 22 minutes, 17.1 lb. Both thin on an 18 lb hopper.

Full weight tables and the empty-hopper edge cases sit on how long to smoke brisket. This page is the dial comparison.

Hopper risk on real listed models

Specs and assumed burns live in the grill database. Same 12 lb packer:

• Pro 575 at 225 F: about 15.2 lb. Overnight warning. Pro 575 at 250 F: about 15.8 lb, about 1.02 lb/hr. Still overnight. About 2.2 lb left.
• RT-700 at 225 F: about 13.6 lb in a 40 lb hopper. RT-700 at 250 F: about 14.0 lb. The warning stays calmer than the 18 lb tank either way.

A bigger hopper changes sleep more than 25 F on the controller. Empty hopper overnight is the warning language when the margin is thin and the cook is long.

250 F is not hot-and-fast, and 275 is a third dial

Leaving the overnight brisket profile on and turning 225 to 250 is still a long collagen cook. If you wrap and push into a short job, switch to the hot-and-fast brisket protein instead of only moving the knob. The stall page covers wrap versus riding it out. 225 vs 275 for brisket holds the same overnight profile and shows what another 25 F does to pellets.

Bark and rendered fat are not in the formula. Hours, burn rate, and hopper margin are. None of these hours are a pull temp. Use a probe. The food-safety disclaimer points at USDA published minimums. PelletDeck estimates the bag, not doneness.