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COMMERCIAL HOOD CLEANING EXPERTS
Restaurant Hood Cleaning in Colorado — What It Is, Why It Matters, and What to Expect
Commercial hood cleaning is the professional deep-cleaning of a restaurant’s kitchen exhaust system — including the hood canopy, grease filters, exhaust ducts, rooftop exhaust fan, and all connected components. It is not the same as wiping down visible surfaces. A proper hood cleaning removes the grease that accumulates deep inside the ductwork and fan housing, where kitchen staff cannot reach and where grease fires start.
NFPA 96, the National Fire Protection Association’s Standard for Ventilation Control and Fire Protection of Commercial Cooking Operations, requires that commercial kitchen exhaust systems be professionally cleaned at defined intervals based on cooking volume and fuel type. Every restaurant in Colorado — from a high-volume Colfax Ave bar to a school cafeteria in Aurora — is subject to this standard. Denver Environmental Health, Boulder County Public Health, Jefferson County Public Health, El Paso County Public Health, and Adams County inspectors all look for cleaning documentation during routine inspections.
Here’s what Colorado operators need to know that operators in other states don’t: at Denver’s 5,280 feet — and even more so in mountain resort kitchens at 9,000–11,000 feet — cooking equipment runs hotter to compensate for reduced air pressure. That means grease vaporizes faster and accumulates in your exhaust system at a higher rate than the national baseline NFPA 96 schedules were designed around. For many Colorado kitchens, complying with the minimum frequency isn’t enough.
Kitchen Guard of Colorado is NFPA 96 certified and serves commercial kitchens across the entire Front Range, from Fort Collins to Pueblo, and into Colorado mountain resort communities. Every service includes photographic before-and-after documentation, delivered the same day, giving you an inspection-ready compliance record.
THE FIRE RISK
Why Grease Buildup in Restaurant Hoods Is a Serious Fire Hazard
Cooking grease is highly flammable. Every time a restaurant kitchen operates, grease-laden vapors travel up through the hood and into the exhaust ductwork. Over time, this grease coats the interior surfaces of the duct system — and once ignited, a grease fire inside a duct system can spread rapidly through the entire building before fire suppression systems can respond.
The NFPA estimates that kitchen fires account for the leading cause of fires in commercial structures. The majority of restaurant kitchen fires that spread beyond the cooking equipment do so through grease-contaminated exhaust systems that were not cleaned on schedule.
Colorado’s altitude isn’t just a talking point — it’s a genuine operational variable. At Denver’s 5,280-foot elevation, reduced air pressure causes combustion appliances to run at higher temperatures, which accelerates grease vaporization and increases accumulation rates inside exhaust systems compared to sea-level kitchens. The effect compounds as you go higher: mountain resort kitchens in Breckenridge, Keystone, or Steamboat Springs — operating at 9,000 feet and above — can see grease build up at rates that outpace NFPA 96 minimums. The Marshall Fire of December 2021, which destroyed over 1,000 structures across Boulder County, underscored just how quickly fire can spread in Colorado’s dry, wind-driven conditions. A grease fire that escapes a duct system in those conditions is not a contained event.
Duct Fires Spread Faster Than Equipment Fires
Grease inside ductwork can carry a fire from the cooking line to the roof in seconds. A clean duct system stops fire from traveling beyond the suppression system’s coverage zone.
Suppression Systems Can’t Protect a Dirty Duct
Ansul and other commercial fire suppression systems are designed to extinguish cooking equipment fires — not duct fires. Once grease ignites inside the ductwork, suppression alone is often insufficient.
Insurance Liability Without Documentation
Colorado insurers increasingly require documented hood cleaning records. A fire caused by a non-compliant exhaust system can void your commercial property coverage — leaving you personally liable for the damage.
NFPA 96 CLEANING FREQUENCY
How Often Does Your Colorado Restaurant Need Hood Cleaning?
NFPA 96 sets the minimum required cleaning frequency based on cooking volume and fuel type. These are legal minimums — many high-volume Colorado kitchens require more frequent service. Here’s the standard schedule and how it applies to common Colorado restaurant types:
Monthly
High-Volume & Solid-Fuel Kitchens
Required for: charcoal grills, wood-fired ovens, wok stations, 24-hour operations, and high-volume fryer lines.
Colorado examples: wood-fired pizza concepts in RiNo and LoHi, charcoal steakhouses on the 16th Street Mall, resort buffet lines in Summit County, 24-hour diners along Colfax Ave, and high-volume fryer operations at Denver International Airport concessions.
Quarterly
Moderate-Volume Kitchens
Required for: most full-service restaurants, bars with kitchen operations, QSR and fast-casual concepts with standard equipment.
Colorado examples: full-service restaurants on Pearl Street in Boulder, South Broadway Denver gastropubs, Aurora chain locations along Havana Street and Iliff Ave, Lakewood fast-casual operators near Belmar, Colorado Springs restaurants on Tejon Street and the Powers Corridor.
Every 6 Months
Low-to-Moderate Volume
Required for: seasonal operations, hotel restaurant operations with limited service hours, smaller catering facilities.
Colorado examples: mountain resort seasonal kitchens in Breckenridge, Frisco, and Winter Park, lodge dining rooms at Keystone and Copper Mountain, CU Boulder and CSU Fort Collins campus operations during academic year, hotel restaurant outlets with limited service hours.
Annually
Low-Volume Operations
Permitted for: churches, day camps, senior centers, and other operations with very limited cooking frequency.
Colorado examples: community centers and church kitchens along the Front Range, rural camp kitchens in the San Luis Valley and Western Slope, assisted living facilities in Loveland, Longmont, and Castle Rock with limited cooking programs.
Not sure which schedule applies to your kitchen? Kitchen Guard’s Colorado technicians will assess your cooking volume, equipment type, and grease accumulation rate during your complimentary inspection and recommend the right service interval — not the most profitable one for us.
WHAT WE CLEAN
Every Component of Your Restaurant’s Exhaust System
A full hood cleaning is not just the hood canopy. NFPA 96 requires cleaning of the entire exhaust system — from the cooking surface to the rooftop discharge point. Here is every component Kitchen Guard cleans on every service visit:
Hood Canopy & Grease Filters
We remove every grease filter and deep-clean the full interior of the hood canopy, including baffles, lips, and hanging points. Grease deposits that accumulate on canopy walls are pressure-washed to bare metal.
Plenum Chamber
The plenum — the cavity directly above the cooking surface inside the hood — collects concentrated grease vapor before it enters the duct. This is one of the highest-risk zones and receives full degreasing on every service.
Exhaust Ductwork
Grease builds up on every interior duct surface between the hood and the rooftop fan. Our technicians clean the full duct run, including elbows, transitions, and hard-to-reach sections, using appropriate access points.
Rooftop Exhaust Fan
The exhaust fan housing, blades, and motor area accumulate grease from every cooking cycle. We clean the entire fan assembly and inspect for wear. Hinge kits are installed where needed for safer future access.
Access Panels & Clean-Outs
NFPA 96 requires access panels at regular duct intervals. If your system lacks adequate access, we install panels during the service to ensure full cleaning compliance now and on future visits.
Grease Containment System
We inspect and clean grease containment cups and trays around the exhaust fan. Overflowing grease containment is a common fire hazard and inspection violation, particularly on flat rooftops common in Denver commercial buildings.
Before & After Photo Documentation — Included on Every Job
After every Kitchen Guard service, you receive a complete photographic record of the job — showing before and after conditions for every major system component. This documentation is your compliance record for Denver Environmental Health, Boulder County Public Health, Jefferson County Public Health, El Paso County Public Health, Adams County, and your insurance provider. It is delivered digitally the same day as service, ready for your files.
KITCHEN TYPES WE SERVE
Restaurant Hood Cleaning for Every Type of Colorado Commercial Kitchen
Every commercial kitchen in Colorado is different — different cooking equipment, different volumes, different inspection requirements. Kitchen Guard’s Colorado technicians are trained to work across every kitchen format. Here’s how we approach the most common kitchen types across the Front Range and mountain communities:
Full-Service Restaurants
Denver’s LoDo, RiNo, and Cherry Creek dining districts are home to high-volume full-service kitchens that typically require quarterly hood cleaning at minimum. We work around service hours and never disrupt your dinner service.
QSR & Fast Casual Chains
Multi-unit operators across Aurora, Lakewood, Thornton, Westminster, and Colorado Springs trust Kitchen Guard for consistent, documented service across all locations. We provide uniform service reports formatted to satisfy corporate and franchise compliance requirements.
Hotel & Hospitality Kitchens
From Denver’s downtown hotel corridor to Summit County ski resort dining rooms, we clean high-capacity hotel kitchens with the documentation standards that major hospitality brands require for insurance and brand compliance audits.
School & University Cafeterias
CU Boulder, CSU Fort Collins, DU, Metro State, and K-12 school districts across Aurora, Jefferson County, and Douglas County operate large cafeterias under strict health department oversight. We schedule service during school breaks and provide district-level compliance documentation.
Healthcare & Assisted Living
Hospitals and assisted living facilities along Aurora’s Fitzsimons corridor and throughout Colorado Springs operate kitchens subject to both NFPA 96 and Joint Commission standards. Our documentation satisfies both regulatory frameworks.
Mountain Resort & Ski Lodge Kitchens
Breckenridge, Frisco, Silverthorne, Keystone, Copper Mountain, Winter Park, Steamboat Springs, and Telluride resort kitchens operate at altitude and run at extreme capacity during ski season — typically November through April. We service mountain kitchens year-round and recommend shoulder-season scheduling (September–October and April–May) when availability is most flexible and before peak-season demand hits.
COLORADO COMPLIANCE
NFPA 96 & Colorado Health Inspector Requirements for Hood Cleaning
Colorado restaurant operators are subject to both state and local health codes that incorporate NFPA 96 requirements. Understanding what inspectors look for — and what documentation you need — protects your license and your insurance coverage.
Denver Environmental Health
Denver Environmental Health inspectors evaluate hood and exhaust system cleanliness during routine restaurant inspections. Critical violations related to grease accumulation can result in immediate corrective action orders. The Denver Fire Department (DFD) also conducts independent fire safety inspections that include exhaust system compliance. Documented service records from a certified provider demonstrate proactive compliance with both agencies.
Boulder County Public Health
Boulder County Public Health applies similar standards to Denver and has been increasingly attentive to exhaust system conditions in restaurant inspections. Boulder’s strong environmental standards also mean that grease discharge and containment are evaluated during inspections.
El Paso County / Colorado Springs
The Colorado Springs area is served by El Paso County Public Health. NFPA 96 compliance is a standard component of commercial kitchen fire safety inspections conducted by Colorado Springs Fire Department, which coordinates with health inspectors on exhaust system compliance. The Powers Corridor, Tejon Street, Briargate, and Broadmoor areas all fall under this jurisdiction.
Jefferson County / Lakewood & Arvada
Jefferson County Public Health oversees restaurant inspections for Lakewood, Arvada, Wheat Ridge, and Golden. Hood cleaning documentation is a standard component of routine inspections in this jurisdiction.
Adams County / Thornton & Westminster
Adams County Public Health covers a large and growing restaurant market north of Denver. Operators in Thornton, Westminster, and Commerce City are subject to the same NFPA 96 documentation requirements as Denver and Boulder.
Larimer County / Fort Collins & Loveland
Larimer County Department of Health and Environment oversees commercial kitchen inspections for Fort Collins, Loveland, and surrounding areas. CSU’s large restaurant market and Fort Collins’ active craft brewing and dining scene make this a significant service area for hood cleaning compliance.
OUR SERVICES
Complete Commercial Hood & Exhaust System Services in Colorado
Kitchen Guard offers a full range of exhaust system services beyond standard hood cleaning. Our Colorado technicians handle every component of your ventilation system, so you have one local provider for your entire compliance program.
Full Exhaust System Cleaning
Complete hood, duct, and fan cleaning from cooking surface to rooftop discharge. Includes before-and-after photo documentation and signed service certificate.
Exhaust System Inspection
A thorough inspection of your full system identifies grease levels, airflow issues, access panel deficiencies, and fan condition — giving you a clear picture of your compliance status.
Exhaust System Restoration
Systems with years of accumulated grease require restoration-level cleaning — deeper, longer, and more intensive than a routine service. We bring heavily built-up systems back to full NFPA 96 compliance.
Exhaust Fan Service & Hinge Kits
We inspect, clean, and service rooftop exhaust fans, and install hinge kits on fans that lack them — making future access safe and simple for our technicians.
Access Panel Installation
NFPA 96 requires access panels at defined intervals in your duct system. We install code-compliant panels where your system lacks adequate access, ensuring full cleaning is possible on every future visit.
Grease Containment Installation
Rooftop grease containment systems prevent overflow onto roof membranes and surrounding areas. We install and maintain containment systems to protect your roof and keep your inspection record clean.
CUSTOMER REVIEWS
Trusted by Colorado Restaurant Operators
5.0
★★★★★
2 Google Reviews
Anne Rogers
a month ago
“We have been working with Kitchen Guard for over a year and love the work they do! They are reliable, thorough, and the customer service is fantastic!”
Tyler Ashworth
Local Guide • 2 months ago
“Kitchen Guard is great. If you’re a restaurant owner needing your vent hoods cleaned, give them a call. Their the best in the Denver area.”
SERVICE AREAS
Hood Cleaning Across the Colorado Front Range & Mountain Communities
Kitchen Guard of Colorado is locally based and serves commercial kitchens throughout the Denver-Boulder metro, the Front Range, and Colorado mountain resort communities. Our technicians know the specific code requirements, inspection schedules, and seasonal demands in each area we serve.
Denver Metro
LoDo, RiNo, LoHi, Capitol Hill, Cherry Creek, Five Points, Highlands, Stapleton/Central Park, Platte Street, South Broadway, Tennyson Street, South Pearl Street, Baker, Washington Park
Boulder
Pearl Street, Hill District, East Boulder, CU campus area, Gunbarrel, North Boulder, Longmont
Aurora
Fitzsimons/Anschutz corridor, Southlands, Havana Street, Tower Road, E. Colfax, Iliff Ave
Lakewood
Belmar, Union Blvd, West Colfax, Green Mountain area, Wheat Ridge, Arvada, Golden
Colorado Springs
Downtown, Broadmoor, Powers Corridor, Tejon Street, Briargate, Manitou Springs
Summit County
Breckenridge, Frisco, Silverthorne, Dillon, Keystone, Copper Mountain
Thornton, Westminster, Northglenn, Commerce City, Broomfield
Old Town Fort Collins, College Ave, Loveland, Windsor
Pueblo, Castle Rock, Castle Pines, Highlands Ranch, Lone Tree, Parker
Winter Park, Steamboat Springs, Telluride, Vail Valley, Aspen area — contact us to confirm availability
Don’t see your city? Contact our Colorado team — we serve the entire Front Range and many mountain communities beyond those listed.
HOOD CLEANING FAQ
Frequently Asked Questions About Restaurant Hood Cleaning in Colorado
How often does my Colorado restaurant need hood cleaning under NFPA 96?
NFPA 96 requires monthly cleaning for high-volume and solid-fuel operations (wood-fired, charcoal), quarterly for moderate-volume restaurants and bars, every 6 months for seasonal or limited-service operations, and annually for very low-volume kitchens like churches or day camps. Colorado’s altitude means grease accumulates faster than the national baseline — many Denver and mountain kitchens need more frequent service than the NFPA minimum.
What happens during a restaurant hood cleaning?
Kitchen Guard technicians cover cooking equipment and surrounding areas with plastic sheeting, then systematically clean the hood canopy, plenum, grease filters, ductwork, and rooftop exhaust fan using hot water pressure washing and commercial-grade degreasers. All grease and wastewater are captured and properly disposed of. After cleaning, technicians inspect the system and deliver a full photo report showing before and after conditions of every component.
Does Denver Environmental Health require hood cleaning documentation?
Yes. Denver Environmental Health inspectors check exhaust system cleanliness and may request documentation of cleaning history during routine inspections. Kitchen Guard provides a dated, signed service report after every visit that serves as your compliance record. The same documentation satisfies Boulder County Public Health, El Paso County Public Health, and most Colorado commercial property insurers.
How long does a commercial hood cleaning take?
Most standard restaurant hood systems take 2–4 hours. Larger systems with multiple hoods, long duct runs, or heavy grease buildup may take longer. Heavily built-up systems that have not been cleaned on schedule may require a restoration service, which takes additional time. Kitchen Guard works around your kitchen schedule to minimize downtime — most Colorado restaurants schedule service after close or before morning prep.
What does Kitchen Guard clean that other hood cleaners miss?
Some hood cleaning companies stop at the visible hood canopy and never address the ductwork beyond arm’s reach or the rooftop exhaust fan housing — the areas where the most dangerous grease accumulates. Kitchen Guard cleans the entire exhaust system path from the cooking surface to the rooftop discharge point, including duct interiors, fan blades, fan housing, and grease containment. We install access panels where systems lack adequate entry points so that future cleanings can be fully complete.
Can my insurance be voided if I don’t have hood cleaning records?
Yes. Colorado commercial property insurers increasingly require documented NFPA 96 hood cleaning records as a condition of policy coverage. If a fire occurs in a kitchen with a non-compliant or under-cleaned exhaust system, insurers may deny the claim on the basis that the fire hazard was foreseeable and preventable. Kitchen Guard’s documentation gives you a clear, dated record of every service.
Do you serve restaurants outside Denver and Boulder?
Yes. Kitchen Guard of Colorado serves commercial kitchens across the entire Front Range — including Aurora, Lakewood, Castle Rock, Littleton, Colorado Springs, and Pueblo — as well as mountain communities including Breckenridge, Frisco, Silverthorne, Dillon, Keystone, Winter Park, and Steamboat Springs. Contact our team to confirm service availability in your specific location.
Is your hood cleaning service NFPA 96 certified?
Yes. All Kitchen Guard hood cleaning services are performed to NFPA 96 standards by trained, certified technicians. We do not subcontract. Every technician is employed directly by Kitchen Guard of Colorado, ensuring consistent quality and accountability on every job. Our service documentation explicitly references NFPA 96 compliance so your records are unambiguous.
Does Colorado’s altitude affect how often I need hood cleaning?
Yes — and this is something many operators don’t know. At Denver’s 5,280-foot elevation, reduced air pressure causes cooking equipment to run hotter, which accelerates grease vaporization and increases the rate of grease accumulation in exhaust systems compared to kitchens at sea level. Mountain resort kitchens at 9,000–11,000 feet face even more pronounced buildup. For many Colorado kitchens, the NFPA 96 minimums underestimate actual cleaning needs. Kitchen Guard’s technicians assess your real accumulation rate during every inspection and recommend intervals based on what your specific kitchen produces — not the national baseline.
Do you service restaurants during ski season in mountain communities?
Yes, and we plan for it. Ski season (typically November through April) is the highest-volume period for Summit County, Vail Valley, Steamboat Springs, and other mountain resort kitchens — and the period when grease accumulates fastest. We recommend mountain operators schedule at least one service during the season and one at the start of shoulder season. Our team is available year-round in mountain communities and can work around your lodge or resort’s operating schedule.