How does an ESP purify restaurant kitchen exhaust?

An ESP uses high-voltage ionization to electrically charge grease and smoke particles, then collects them on oppositely charged plates. This captures 90-99% of particles without using disposable filters.

What is the difference between ESP and traditional grease filters?

Traditional mesh/baffle filters only capture 40-60% of grease. ESP captures 90-99%. ESP cells are washable and reusable, while traditional filters need frequent replacement.

Can ESP be installed without shutting down my restaurant?

Yes. Modular in-duct ESP installs inside your existing ductwork in 1-2 days. No structural changes, no hood replacement, no business interruption.

How often do ESP collector cells need cleaning?

Most restaurants clean every 2-4 weeks. Heavy cooking (wok, deep fry) may need weekly cleaning. Cells slide out and are dishwasher-safe.

Does ESP reduce fire risk in kitchen ducts?

Yes. ESP removes 90-99% of grease before it enters the ductwork, dramatically reducing the fuel source for duct fires. Our units also include automatic power shutoff.

Can ESP eliminate cooking odors reaching neighbors?

ESP removes visible smoke and grease. For gaseous cooking odors, add optional activated carbon or UV-C modules downstream for full odor control.

What certifications does Polygee ESP have?

UL (USA), CE (EU), RoHS, CQC, CCEP, ISO 9001 and ISO 14001. Compliant in 50+ countries.

How do I choose the right ESP for my restaurant?

It depends on your cooking type, kitchen size, and duct layout. Share your kitchen details and our engineering team will recommend the right configuration within 24 hours.

Restaurant kitchen ESP exhaust purification solution — Polygee

🍳 Solution · Restaurant Kitchen

Restaurant Kitchen
Exhaust Purification Solution

Restaurant kitchen ESP is the most effective solution for heavy grease and smoke removal. From wok fumes to deep-fryer oil mist, our electrostatic precipitator systems deliver 90–99% purification efficiency with retrofit installation that keeps your kitchen running.

Free Kitchen Assessment → See How ESP Works

90-99%

Grease Capture Rate

1-2 Days

Retrofit Install

50+

Countries Certified

179

Patents Held

⚠️ The Challenge

Why Restaurant Kitchens Need ESP

Restaurant kitchens produce the heaviest grease-laden exhaust in the foodservice industry. Without proper electrostatic purification, these four problems compound rapidly.

🔥

Heavy Grease & Smoke Accumulation

Wok stations, deep fryers, and char-grills produce massive volumes of grease-laden smoke. Without ESP, grease accumulates inside ductwork at a rate of 3–5mm per month — creating fire hazards, costly duct cleaning bills, and reducing exhaust fan efficiency by up to 30%.

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Fire Safety & Code Compliance

Grease-clogged exhaust ducts are the #1 cause of commercial kitchen fires, responsible for over 11,000 structure fires annually in the US alone. Most jurisdictions now require grease removal at source to pass fire inspection and obtain operating permits.

😷

Neighbor Complaints & Municipal Fines

Visible exhaust plumes and cooking odors from rooftop vents trigger complaints, environmental fines ($500–$10,000/violation in many cities), forced closure orders, and lawsuits in dense urban areas. This is especially critical for restaurants in mixed-use buildings.

🔧

Retrofit Difficulty & Downtime Cost

Traditional filtration upgrades require extensive construction, hood replacement, and weeks of downtime. For a restaurant generating $5,000–$15,000/day, even one week of closure means $35,000–$105,000 in lost revenue — plus renovation costs.

↓

How ESP Works

The Science Behind Electrostatic Purification

Unlike traditional mesh filters that only capture 40–60% of grease, ESP uses electrical charge to remove 90–99% of grease and smoke particles — all without disposable filters.

Polygee ESP working principle diagram — ionization and collection stages

Ionization Stage

High-voltage ionization wire (12–13kV) charges every grease and smoke particle as exhaust passes through.

Collection Stage

Charged particles are attracted to oppositely charged aluminum plates and deposited on the collector cell.

Clean Air Discharge

Purified air exits with 90–99% grease removed. Minimal pressure drop (<100 Pa) maintains fan efficiency.

Easy Maintenance

Collector cells slide out and are dishwasher-safe. No disposable filters to replace.

System Architecture

Complete Purification System

A streamlined 5-stage system from cooking surface to clean exhaust — designed specifically for restaurant kitchens.

🍳

Stage 1

Cooking Source

Wok, fryer, grill generate grease-laden fumes

→

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Stage 2

Exhaust Hood

Stainless steel hood captures fumes into duct

→

⚡

Stage 3

ESP Purification

90–99% grease & smoke capture at source

→

🌬️

Stage 4

Fan + Optional Carbon/UV

Exhaust fan + carbon/UV for odor control

→

✅

Result

Clean Discharge

Invisible, odor-free, code-compliant

Application Scenarios

ESP for Every Restaurant Type

Different cuisines produce different types and volumes of grease. Our ESP configurations are tailored to each cooking style.

Chinese wok kitchen with heavy grease smoke requiring ESP exhaust purification

Chinese & Asian Wok Kitchen

High-heat wok cooking generates the densest grease and smoke. Heavy-duty ESP with extra collector cells and frequent cleaning cycle. The most demanding scenario.

Heavy Load · 6,000–12,000 m³/h

Western steakhouse charbroiler grill producing smoke for ESP filtration

Western Grill & Steakhouse

Char-grill and broiler produce heavy smoke with carbon particles. ESP + carbon filter combination for both visible smoke and odor elimination.

Medium-Heavy · 4,000–8,000 m³/h

Fast Food & Deep Fry

Deep fryers produce consistent, high-volume oil mist. Standard ESP configuration delivers excellent results with low maintenance.

Medium Load · 4,000–6,000 m³/h

Wood-fired pizza oven smoke exhaust managed by ESP purification

Pizza & Oven-Based

Wood-fired and gas ovens produce moderate grease but significant smoke. ESP handles the particulate while optional UV-C tackles the smoky aroma.

Medium Load · 3,000–6,000 m³/h

Noodle and soup kitchen with steam requiring ESP ventilation solution

Noodle & Soup Kitchen

Steam-heavy environments with moderate grease. Compact ESP modules handle the load efficiently while managing moisture.

Light-Medium · 2,000–4,000 m³/h

Multi-cuisine open kitchen restaurant with ESP exhaust system

Multi-Cuisine Restaurant

Mixed cooking styles require versatile ESP configuration. Modular design allows scaling capacity to match the most demanding station.

Variable · Custom Configuration

Technology Comparison

ESP vs. Traditional Grease Filters

See why leading restaurants are switching from disposable filters to electrostatic precipitators.

Feature	Traditional Mesh/Baffle Filter	Polygee ESP
Grease Capture Efficiency	40–60%	90–99% ✓
Visible Smoke Removal	✗ Poor	✓ Excellent
Fire Risk Reduction	Limited — grease still enters duct	✓ 90%~99% grease removed at source
Disposable Filters Needed	✗ Yes — frequent replacement	✓ No — washable & reusable
Duct Cleaning Frequency	Monthly	Quarterly or less ✓
Pressure Drop	150–300 Pa (increases as filter clogs)	<100 Pa (constant) ✓
Energy Impact on Fan	Higher — fan works harder	Lower — saves 15–20% energy ✓
Odor Control Capability	✗ None	✓ Optional carbon/UV add-on
Noise Level	N/A (passive)	Silent — zero moving parts ✓
Installation Disruption	Full hood replacement needed	1–2 day retrofit ✓

Ready to upgrade your restaurant kitchen ESP with 90–99% grease removal and zero downtime?

Get Your Free Kitchen Assessment →

Choose the Right ESP for Your Kitchen

Based on restaurant kitchen requirements, we recommend two ESP product lines depending on whether you are retrofitting or building new.

Best for Existing Kitchens

Modular In-Duct ESP

Slides directly into your existing ductwork in 1–2 days. No hood replacement, no structural changes, no business interruption. The most popular choice for operating restaurants upgrading their exhaust systems.

90–99% Efficiency
2,000–12,000 m³/h
1–2 Day Retrofit
Washable Cells
<100 Pa Drop

View Full Product Details →

Best for New Build

Integrated Kitchen Hood ESP

All-in-one stainless steel hood with built-in ESP, LED task lighting, and oil drainage system. The cleanest, most efficient design for new restaurant kitchens or full renovations.

All-in-One Design
304 Stainless Steel
Built-in LED Lighting
Slide-Out Cleaning
Custom Dimensions

View Full Product Details →

Installation Process

From Assessment to Clean Exhaust in 4 Steps

Our streamlined process minimizes disruption and gets your ESP running fast.

📋

Site Assessment

Share your kitchen layout, hood dimensions, duct specs, and cooking type. Our engineers design a custom ESP configuration within 24 hours.

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Custom Production

ESP units are manufactured to match your exact duct dimensions. Standard lead time is 2–3 weeks. Rush production is available.

🛠️

1–2 Day Installation

ESP slides into your existing ductwork. Electrical connection, commissioning, and performance verification — all completed while your kitchen stays open.

✅

Ongoing Support

Cleaning training for your staff, maintenance schedule setup, spare parts support, and optional IoT remote monitoring for peace of mind.

Why Polygee

Why Polygee for Your Restaurant

⏱️

Retrofit Without Downtime

Our modular ESP slides into existing ducts in 1–2 days. Your restaurant stays open — zero revenue loss, zero construction mess.

🎯

90–99% Purification

Patented plate-type collector cells deliver best-in-class grease and smoke capture. Visible exhaust plumes disappear.

🌍

Globally Certified

UL, CE, RoHS, CQC, CCEP, ISO 9001/14001 — compliant with fire and emission codes in 50+ countries worldwide. View our certifications →

📞

24h Engineering Support

From initial assessment to custom configuration — our engineering team responds within 24 hours. Backed by BSE-listed manufacturer.

🇺🇸

UL Listed

🇪🇺

CE Certified

♻️

RoHS

🏭

ISO 9001

🌿

ISO 14001

📊

CCEP

✅

CQC

Manufacturing Excellence

Built in Our Own Smart Factory

Every Polygee ESP is manufactured in-house at our 125,000m² intelligent production facility — ensuring quality control from raw material to finished product.

125,000m²

Factory Area

179

Patents Held

BSE:920802

Publicly Listed

50+

Export Countries

Global References

Trusted by Iconic Properties Worldwide

Polygee ESP systems are installed in some of the world’s most prestigious commercial kitchens and foodservice venues.

Marina Bay Sands

Full kitchen ESP retrofit for multiple restaurant outlets across all three towers in Singapore’s most iconic integrated resort.

Singapore · Hotel & Casino

Dubai Mall

Food court ventilation upgrade covering 1,200+ dining seats. Achieved zero visible exhaust emission from rooftop discharge points.

UAE · Shopping Mall

Taipei 101

Commercial kitchen exhaust purification for premium dining floors. Meeting Taiwan’s strictest emission standards in a skyscraper environment.

Taiwan · Commercial Tower

TRX Exchange

Kitchen exhaust solution for Kuala Lumpur’s new financial district mixed-use development, serving multiple F&B tenants.

Malaysia · Mixed-Use

University of Sydney

Campus dining facility exhaust upgrade. Eliminated grease odor complaints from adjacent academic buildings while meeting AU environmental codes.

Australia · Education

Waldorf Astoria Doha

Five-star hotel kitchen ESP system covering banquet, all-day dining, and specialty restaurant kitchens. Zero emission complaints since install.

Qatar · Luxury Hotel

Free Assessment · 24h Response · Custom Design

Get Your Free Kitchen Assessment

Share your kitchen layout, cooking type, and duct dimensions — our engineering team will design a custom ESP solution with a detailed proposal and quotation within 24 hours.

Get a Free Quote → Download Solution Guide

UL Certified CE Compliant 179 Patents 24h Response BSE:920802

FAQ

Frequently Asked Questions

An ESP uses high-voltage ionization (12–13kV) to give grease and smoke particles a positive electrical charge. These charged particles then flow into a collector cell made of alternating aluminum plates with opposite charges. The grease is attracted to and deposited on the plates, effectively removing 90–99% of all particles from the exhaust stream. Unlike traditional filters, ESP uses no disposable media — the collector cells are fully washable and reusable.

Traditional mesh or baffle filters only capture 40–60% of grease particles, and their efficiency drops quickly as they clog. ESP captures 90–99% consistently, with minimal pressure drop. ESP cells are washable and reusable (no filter replacement costs), and ESP also removes visible smoke — something traditional filters cannot do. Over a 3-year period, ESP typically saves 40–60% on total ventilation maintenance costs compared to traditional filters.

Yes. Our modular in-duct ESP is specifically designed for retrofit. The unit slides into your existing ductwork — no hood replacement, no structural changes, no ceiling demolition. Installation is completed in 1–2 days, usually during off-hours. Your restaurant stays open for business throughout the entire process.

Cleaning frequency depends on cooking volume and type. For a typical lunch-and-dinner restaurant, clean every 2–4 weeks. Heavy-load kitchens (Chinese wok, deep frying, charcoal grill) may need weekly cleaning. The process is simple: slide out the cell, soak in alkaline degreaser for 15–30 minutes, rinse, and reinstall. Cells can also go through a commercial dishwasher.

Significantly. ESP removes 90–99% of grease at the source — before it enters the ductwork. This eliminates the primary fuel for duct fires. Our units also include automatic power shutoff safety mechanisms and are UL certified for commercial kitchen use. Many insurance companies offer premium reductions for kitchens with ESP-protected exhaust systems.

ESP is highly effective at removing visible smoke and grease particles, which eliminates the exhaust plume. For gaseous cooking odors (which pass through ESP), we recommend adding our optional activated carbon filter or UV-C photolysis module downstream. This combination addresses both visible emissions and odor molecules, providing complete exhaust treatment.

Polygee restaurant kitchen ESP carries UL (USA/Canada), CE (EU), RoHS, CQC, CCEP, ISO 9001, and ISO 14001 certifications. We provide compliance documentation for 50+ countries worldwide. Our parent company is listed on the Beijing Stock Exchange (stock code: 920802), providing institutional-level quality assurance and financial stability.

The right ESP depends on three factors: (1) your cooking type and intensity (wok vs. oven vs. fryer), (2) your exhaust airflow volume in m³/h, and (3) whether you are retrofitting an existing kitchen or building new. Share your kitchen layout, hood dimensions, and cooking type with us, and our engineering team will recommend the optimal configuration with a detailed proposal within 24 hours — completely free.

Content reviewed by Polygee Engineering Team · Last updated April 2026

Restaurant KitchenExhaust Purification Solution