Grease Trap Installation in Longview, WA
FHN Plumbing installs code-compliant grease traps and interceptors for restaurants, cafes and commercial kitchens across Longview, WA.
- Local Washington Plumbers
- Upfront Pricing
- Free Estimates Available
- Permit and Inspection Support
Keep your kitchen open with a properly sized grease trap in Longview, WA.
Our team is ready to provide a fast and accurate quote for your installation project.
Professional Grease Trap Installation in Longview, WA
FHN Plumbing specializes in professional grease trap installation for restaurants and commercial kitchens across Washington. We understand the key role a properly installed grease trap plays in preventing clogs and maintaining a sanitary, code-compliant operation in your Longview business.
Our expertise includes:
- Compliance with Washington plumbing and environmental codes.
- In-ground concrete and polyethylene gravity interceptor installs
- Residential grease interceptor setup for high-volume use.

Additional Kitchen Plumbing Services in Longview, WA
Our kitchen plumbing services in Longview, WA cover sinks, disposals, dishwashers, and grease traps so your kitchen stays clean, safe, and fully functional.

Customers
Why Choose FHN Plumbing for Grease Trap Installation in Longview, WA?
Choosing the right plumbing company for grease trap installation is crucial for long-term reliability and compliance. Our team has extensive experience with the specific requirements and challenges of commercial kitchen plumbing systems.
- Odor Control, Properly sealed and maintained grease traps greatly reduce unpleasant odors common in commercial kitchens.
- Minimal Downtime, We schedule work after hours or between shifts to keep your kitchen running.
- Experienced Plumbers, Our technicians are highly trained in the specific methods and requirements for installing various types and sizes of grease traps.
Citywide Coverage
We install grease traps for food service businesses in strip centers, standalone restaurants and mixed-use buildings throughout Longview. Our crews handle both indoor and outdoor installations, including small retail suites.
Experienced Team
Our commercial plumbers have installed grease interceptors ranging from 20 GPM under-sink units to 1,500 gallon outdoor tanks. They understand the sizing standards and how kitchen layouts shape performance.
Safety-First Approach
We follow local plumbing code and municipal fats, oils and grease programs on every installation. That includes proper venting, flow control and placement so lids are easy to reach for pumping and inspection.
Trusted Certified Longview Plumbing Services Professionals
At FHN Plumbing, we take pride in providing certified plumbing services throughout Longview, WA. Backed by leading industry credentials, our experienced plumbers combine technical skill with genuine customer care. Whether it is repair, installation, or maintenance, we follow strict safety and quality standards to deliver lasting results you can trust.
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PHCC Plumbing Contractor Recognition
Better Business Bureau (BBB) Accreditation
Angi Certified Pro
ISO 9001 Quality Management CertificationReliable Grease Trap Installation Services in Longview, WA
Hydro-Mechanical Grease Interceptor Installation in Longview
Hydro-mechanical grease interceptors, often called HGI units, are compact and designed for indoor use, usually under a sink or on the floor. These units use baffles to slow down wastewater flow, allowing grease to separate and accumulate. FHN Plumbing expertly installs various sizes of HGI units, ensuring proper venting, leveling, and connection to your drainage system in Longview for the best efficiency.

Grease Trap Sizing and Placement in Longview, WA
Correct sizing and smart placement are critical for a grease trap's effectiveness. Installing a unit that is too small will lead to frequent clogs and overflow, while an oversized one can be an avoidable expense. Our plumbers meticulously calculate the required capacity based on your kitchen's water flow, fixture count, and operating hours, ensuring optimal performance for your Longview, WA business.
Hydromechanical Grease Trap Installation in Longview
Hydromechanical grease traps sit under or near sinks and use baffles and flow control to separate grease from water. They are common in small cafes, coffee shops and quick-service restaurants with limited space. We install units from Zurn, Watts, Schier and Endura sized by gallons per minute. Each install includes a flow control fitting and proper venting to keep the trap working as designed. These units need frequent cleaning, so we place them where staff can reach the lid easily.
Grease Trap Installation Cost in Longview, WA
Small under-sink hydromechanical traps generally cost much less to install than large outdoor interceptors. Indoor units are typically a few thousand dollars installed, while in-ground interceptors can run well into five figures with excavation and concrete work. Pricing depends on unit size, location, soil conditions and whether we need to cut and patch floors. We give you a written estimate that includes permits and inspection. That way there are no surprises during construction.
Grease Trap Replacement and Upgrades in Longview
If your existing grease trap is old, damaged, or no longer meets current code requirements, FHN Plumbing offers professional replacement and upgrade services. We can remove your outdated unit and install a new, more effective model that complies with all regulations in Longview. Upgrading can prevent future plumbing issues and help your business avoid fines related to FOG discharge.
Grease Trap Installation for Schools and Institutions in Longview
School cafeterias, hospitals, senior living facilities and churches with kitchens often need commercial interceptors. These sites usually have large dish machines and steam kettles that push high flow. We size interceptors to handle peak lunch or dinner loads without bypassing grease. Our crews schedule work around school breaks or off hours. We also provide documentation for facility managers and code officials.
Under-Sink Grease Trap Setup in Longview, WA
Smaller establishments or specific kitchen stations in Longview, WA may benefit from compact under-sink grease traps. These units are well suited for capturing FOG at the source, preventing it from entering the main plumbing lines. Our team carefully installs these smaller units, ensuring proper sizing, sealing, and connection to your existing plumbing system for reliable waste management and odor control.

Residential Grease Interceptor Setup in Longview, WA
While less common, some large residential kitchens or homes with extensive outdoor cooking setups may benefit from a small grease interceptor. These are usually installed under the sink and help prevent fats, oils, and grease from clogging household drains. FHN Plumbing can evaluate your home's needs and provide a suitable residential grease trap installation solution that protects your plumbing system from FOG accumulation.
Grease Trap Installation Near Me in Longview, WA
Searching for 'grease trap installation near me' in Longview, WA? FHN Plumbing is your local commercial plumbing expert. Our teams are positioned to provide quick response and efficient service to businesses across the entire Longview area.
Our crews are based nearby and can visit your site quickly for a sizing review. We bring the equipment needed for indoor or outdoor installs. You get one point of contact from planning to final inspection.
FHN Plumbing at a Glance
- Licensed and insured plumbers serving Longview, WA
- Same-day appointments and 24/7 emergency response
- Clear written estimates, no hidden fees
- 4.9-star rated by 382+ Washington customers
Longview Map
Longview Information
- Population
- 37,925
- Area codes
- 360/564/503
- Service area
- Longview and communities within 40 miles
- Nearby
- Vancouver, Olympia, Lacey, Lakewood
For commercial kitchens in Longview, WA, proper grease trap installation is crucial for keeping FOG breakdown and odor issues under control. Constant moisture west of the mountains promotes mold, rot and corrosion around leaks, so small drips should not be ignored.
Expert Services
Trust our professionals for reliable FHN Plumbing solutions in Longview, WA.
Our Specialized Plumbing Services in Longview, WA
At FHN Plumbing, we provide a complete range of plumbing services across Longview, WA. From leak detection to full system installations, our team ensures fast, precise, and affordable service for both residential and commercial properties. Explore our core services below:
How Our Grease Trap Installation Process Works in Longview, WA
We follow a tested method for every grease trap installation in Longview, guaranteeing a high-quality and compliant outcome.
Request a Quote
Call us at (425) 491-3131 to discuss your grease trap installation needs. We will gather information about your commercial kitchen or property and schedule an on-site assessment.
Site Assessment
Our experienced plumbers will visit your Longview location to evaluate the space, determine the optimal grease trap size, and identify the best placement. We consider factors like kitchen layout, water usage, and local code requirements.
Permit Acquisition
For commercial grease trap installations in Longview, permits are often required. We assist you in navigating the necessary paperwork and ensure all local permits are secured before starting work.
Frequently Asked Questions About Grease Trap Installation in Longview
Small indoor hydromechanical traps usually cost $1,500 to $5,000 installed. Large outdoor gravity interceptors often run $8,000 to $30,000 or more with excavation, concrete and site restoration. We provide a written estimate after a site visit.
The main purpose of a grease trap is to intercept fats, oils, and greases (FOG) from commercial kitchen wastewater before they enter the public sewer system. This prevents pipe blockages, protects municipal infrastructure, and helps businesses comply with environmental regulations.
Manufacturer warranties vary, with many polyethylene units carrying long structural warranties. We also warranty our installation workmanship and connections.
We install a variety of trusted grease trap brands, including Zurn, Big Dipper, Schier, and Rockford Separators. Our plumbers are familiar with the specifications and installation requirements of numerous manufacturers, ensuring you get a high-quality, durable system tailored to your needs.
Signs you might need a new grease trap include frequent sewer backups, persistent foul odors coming from drains, slow drainage throughout your kitchen, or if your current unit is visibly corroded or leaking. If your existing trap is old and no longer meets current local codes in Longview, an upgrade is also a good idea.
That depends on local rules and the trap type. Some programs require dish machines to discharge through the interceptor, while others restrict high-temperature discharge into certain units, so we confirm the requirement before we install.
Yes, commercial grease trap and interceptor installations generally require a plumbing permit and inspection. Some cities also require approval from their pretreatment or wastewater department.
An indoor under-sink trap can often be installed in a day. Outdoor interceptors usually take several days to a week or more, depending on excavation, concrete work and inspection scheduling.
What People Are Saying About Our Plumbing Experts?

James P.
Our commercial plumbing system had a leak under the sink, and FHN Plumbing handled it professionally. The plumbers arrived quickly and restored everything without disruption to our customers.
Commercial Plumbing · Lakewood, WA
Robert G.
The trenchless sewer replacement saved our front yard. They walked us through the camera inspection footage first so we knew exactly what we were paying for.
Sewer Line Replacement · Longview, WA
Laura S.
I scheduled a water heater replacement, and the team made the process smooth and affordable. The new unit works perfectly, and they cleaned up after completing the job.
Water Heater Replacement · Vancouver, WA
Mark T.
When our office needed drain cleaning, FHN Plumbing provided quick, reliable service. The plumber arrived on time and made sure every drain flowed perfectly before leaving. Very satisfied.
Drain Cleaning · Longview, WA
Emily R.
I called FHN Plumbing for plumbing repair, and the technician was fast, polite, and thorough. They explained the problem clearly and fixed it the same day. I will definitely hire them again. Highly recommended!
Plumbing Repair · Vancouver, WA
Daniel K.
A pipe burst at 11 pm and they actually answered. The plumber showed up within the hour, shut everything down, and had us back to normal the next morning. Could not ask for more.
Emergency Plumbing · South Hill, WA












