BUNN GRB Velocity Brew 10-Cup Home Coffee Brewer: Review, Pros & Cons

Summary

A 10-cup pour-in drip brewer with a 70 oz always-hot stainless tank that finishes a 50 oz carafe in about 3-4 minutes. Check your volume and your need for a timer before you buy: it has no programmable timer, no temperature adjustment, no brew-pause, and the glass carafe sits on a warming plate that cooks coffee left more than about an hour.

Strengths

Brews a 50 oz carafe in about 3-4 minutes from an always-hot tank.
Multi-stream sprayhead wets the grounds evenly for consistent extraction.
Drip-free carafe pours cleanly.
3-year warranty on new machines, with a wide parts and service network.
Simple pour-in operation with no programming to learn.
Designed and assembled in the USA.

Weaknesses

No programmable timer, temperature adjustment, brew-pause, or grinder.
Glass carafe sits on a warming plate that cooks coffee left more than about an hour.
Always-hot tank draws roughly 300 W continuously, about $2-4 a month in electricity.
BUNN-size flat-bottom filters are less common in stores than standard filters.
Overflow risk with too-fine grind or wrong filter size.
Mineral scale builds up in hard water, requiring periodic descaling.

Verified specifications

Model/retail item	GRB / Speed Brew Classic, item 38300.0063.
Capacity	10 cups / 50 oz; brew 20-50 oz per batch.
Hot water tank	70 oz internal stainless steel reservoir, always hot.
Brew time	50 oz carafe in about 3-4 minutes; 20 oz travel mug in about 2 minutes.
Sprayhead	commercial-style multi-stream.
Carafe	proprietary drip-free glass carafe.
Warming plate	switch-activated.
Funnel	taller, sized for BUNN’s 1/4"-taller flat-bottom paper filters.
Electrical	120 V household outlet; GRB-specific wattage and amps are not published.
Features absent	no programmable timer or clock, no brew-temperature adjustment, no brew-pause, no built-in grinder.
Warranty	3 years on a new machine (glass carafe excluded); 1 year on replacement machines and thermal carafes.
Origin	designed and assembled in the USA.
Dimensions	14.3 × 7.1 × 13.8 in.
Weight	approximately 8 lb.
In the box	glass carafe, brew funnel, and documentation; parts sold separately.

Full research notes and sources

Speed and the hot-water tank

The internal 70 oz stainless tank keeps water hot, so a 50 oz carafe finishes in roughly 3-4 minutes and a 20 oz travel mug in about 2 minutes. That speed is the reason to buy it. The cost is standby power: one review site estimates roughly 300 W to maintain the tank, about $2-4 a month, and the tank needs about 15 minutes to reach operating temperature after power-on. If you brew one cup a day, the always-hot tank is waste; if you brew a pot every morning, it earns its keep.

Brew temperature and water path

One review site claims all-metal components in the water path with no plastic valves or tubing, but that is a review claim, not a manufacturer specification. Treat both as unverified.

Filters, carafe and upkeep

The taller funnel takes BUNN’s flat-bottom filters, which are 1/4 inch taller than standard filters and less common in stores. The glass carafe is drip-free but not covered by the 3-year warranty, and coffee left on the warming plate for more than about an hour tastes cooked. Maintenance is manual: clean the carafe and funnel after each use, descale periodically with vinegar or BUNN cleaner, and inspect the sprayhead and tube. Replacement funnels, pour-in lids, seal kits and filter packs are sold separately, and BUNN cites a wide service and parts network. Scale buildup is a real risk in hard water.

Is it worth it?

BUNN’s retail page lists the GRB at $130.00 (retail.bunn.com, 2026-10-30). GetBunn.com lists it at $126.16 (getbunn.com, 2026-10-30), and review sites cite a typical price of $129-139. Against SCA-certified machines at $200-250 (OXO Brew 9-Cup) and $349-369 (Technivorm Moccamaster), the GRB is strong value for high-volume households at about $130. Value thresholds: at or under $120 it is strong value; $121-140 is fair once you weigh timer and thermal-carafe needs; above $140 it is weak unless brew speed and 10-cup capacity are the deciding factors. Skip it if you drink one or two cups a day, want coffee ready on a timer, want temperature adjustment, or prefer a thermal carafe (BUNN’s BT model).

Which model this is

This page covers the black glass-carafe GRB, retail name Speed Brew Classic, item 38300.0063, sold under the Velocity Brew name. The Amazon listing for this model is ASIN B000FFRZ26. Don’t confuse it with those sibling models.