Acme Revival is an independent repair network that operates separately from the manufacturers whose devices we service. Our independence enables a repair model that exists beyond manufacturer-controlled strategies, while preserving the ability to work with manufacturers where appropriate.
BUNN-O-Matic Corporation, commonly known as BUNN, is a major American manufacturer of commercial beverage preparation and dispensing equipment founded by George R. Bunn and formally incorporated in 1963. The company grew from its pioneering flat-bottom coffee filters and commercial drip brewers into a broad foodservice-equipment manufacturer producing commercial coffee brewers, grinders, espresso systems, iced-tea brewers, hot-water dispensers, frozen/granita machines, juice and specialty-beverage dispensers, bean-to-cup systems, and related beverage equipment. BUNN is particularly well known in restaurants, convenience stores, offices, hospitality, institutional foodservice, and commercial coffee service for durable high-volume brewing equipment. Most of its commercial equipment is assembled in the United States, particularly at its Illinois and Iowa facilities. In March 2026, BUNN joined Ali Group and now operates in North America as part of the Welbilt portfolio, ending its long history as an independent family-controlled manufacturer.
Mineral scale, coffee residue, and debris commonly clog BUNN sprayhead openings and internal water passages, resulting in slow brewing, uneven saturation, weak coffee, or incomplete brew cycles. Descaling and sprayhead cleaning are among the most frequently specified remedies in BUNN documentation.
Tank heating elements can fail open or lose heating performance, causing cold or lukewarm beverages, excessively long warm-up times, or heating-related fault messages. High-limit thermostats and associated heater circuits should also be checked when the tank will not reach operating temperature.
The inlet solenoid can become obstructed, electrically fail, or stick open or closed, causing slow filling, no water entering the tank, continuous filling, or overflow. BUNN diagnostics specifically identify inlet-solenoid failure as a common cause of excessive fill times.
Thermostats, thermistors, and temperature probes can drift, open, short, or provide incorrect readings to the controller. Typical symptoms include overheating, insufficient brew temperature, heating lockouts, excessive steaming, and temperature-sensor error messages.
Hard-water deposits accumulate on heaters, probes, valves, sprayheads, and tank passages, producing restricted water flow, abnormal heating noises, dripping, poor temperature regulation, and extended brew times. Severe scaling can contribute to secondary heater and valve failures.
BUNN brewers frequently experience funnel overflow when the sprayhead is missing or incorrect, flow is excessive, the filter is unsuitable, grounds restrict drainage, or the funnel is improperly loaded. Restricted or improperly calibrated water delivery can further aggravate overflowing.
Electronic control boards, timers, and relays can fail to initiate or terminate brew, fill, or heating cycles correctly. Symptoms include a brew cycle that will not start, continuous filling, interrupted brewing, abnormal heater operation, or components that test correctly individually but are not being commanded.
Aging sprayhead seals, tank gaskets, fittings, valve seals, and beverage-path seals can allow water to leak internally or around the brew assembly. BUNN documentation specifically identifies damaged or improperly seated sprayhead seals as a cause of external water leakage on applicable models.
BUNN grinders commonly develop motor-overload trips, worn grinding components, hopper or grind-chamber blockages, damaged shear plates, or dispensing-control faults. These failures can produce a grinder that will not start, runs without dispensing beans, jams under load, or delivers an inconsistent grind.
Connect with a technician.
Orders can typically be cancelled 24 hours prior to shipping
Get a real-time offer. Enter the make and model to begin.
Acme offers several ways to pay your service or repair balance.
Securely powered by 
This service is provided by Community Federal Savings Bank (“CFSB”), member FDIC, for which GoCardless Ltd acts as a third-party servicer.
Payable to ACME REVIVAL INC, write BUNN- O- Matic in memo line, and mail your check to: 191 University Blvd. Suite 340, Denver, CO 80206. Payment are collected every weekday excluding federal holidays.
