Laguna BFlux vs CFlux vs PFlux — choosing the right dust collector (2026)

Sawdust looks harmless as it swirls in the sunlight from the workshop window. That is precisely where the problem lies. Particles smaller than 5 μm reach deep into the airways; particles smaller than 2.5 μm penetrate into the alveoli of the lung and stay there. The International Agency for Research on Cancer (IARC) classifies wood dust as a Group 1 carcinogen — the same category as asbestos, benzene and tobacco smoke [1]. This does not only apply to exotic species: oak, beech and birch are all on the list.

Common Swedish joinery practice — an older Shop-Vac connected to the table saw, the window cracked open — at best gives partial capture of coarse chips. The fine respirable fraction stays in the workshop air and follows every breath hour after hour. The wrong dust collector = slow lung damage. The right dust collector = decades of a healthy workshop.

Laguna Tools, founded in California in 1983, specialises in dust separation and chip handling for woodworking. Their three ranges — BFlux (cartridge filter), CFlux (standard cyclone) and PFlux (cyclone + HEPA) — cover everything from hobby workshops to professional joinery. This guide goes through all three ranges with verified specs [2][3][4], explains why cyclone and HEPA matter so much for health, and helps you size a dust collector for your specific machines. Ernst P distributes the complete Laguna range in Sweden, including original replacement filters.

Three levels of filtration — cartridge, cyclone and HEPA

All dust collectors do the same basic job: they draw air through a fan, separate solid particles and return clean air to the workshop. The difference lies in how the separation takes place and which particle size is actually captured.

Cartridge filter (BFlux)

All air and all chips go straight into a pleated cartridge filter where the particles catch in the filter media. Coarse chips collect in a bag below the filter; fine dust lodges in the pleats. The cartridge filter in the BFlux captures particles down to 1 μm with 99% efficiency, and with the optional add-on filter (fine-filter cartridge) down to 0.5 μm with 99% efficiency [2].

Strength: simple construction, lower price, compact. Weakness: the filter clogs quickly at large chip volumes because coarse and fine chips meet the filter at the same time — every hour you spend planing you lose suction pressure.

Cyclone (CFlux)

The airflow is led into a conical cyclone chamber where centrifugal force flings heavy particles against the wall — they fall down into the collection bin. Only air and fine particles reach the filter above. Laguna's square cyclone ("Square Cyclone", mod.2022) is designed for maximum separation and minimum pressure loss [3].

Strength: 95–99% of the chip volume is collected in the cyclone bin before the filter — the filter lasts 12–24 months instead of 3–6 months, and the suction pressure is constant throughout the working shift. Weakness: higher price, larger physical size, requires more ceiling height.

Cyclone + HEPA (PFlux)

Same cyclone principle as the CFlux, but the filter is upgraded to HEPA H13 under the EN 1822 standard: ≥ 99.95% of particles at 0.3 μm (MPPS — Most Penetrating Particle Size) [4][5]. HEPA H13 therefore captures the smallest respirable particles that ordinary filters let through — the ones that actually cause long-term lung damage.

Strength: health-oriented filtration for long-term exposure, certified to an international standard. Weakness: HEPA filters cost more to replace, and add slightly more pressure loss than standard filters (a marginal difference in practice thanks to the cyclone separation).

HEPA H13 captures ≥ 99.95% at MPPS. H14 captures ≥ 99.995%. For a workshop environment, H13 is the practical standard — H14 is used in hospitals and clean rooms. Anything below H13 (e.g. E11, E12) is called "EPA" and is not true HEPA.

BFlux 1 — the entry-level dust collector

Laguna's BFlux 1 is their cartridge-filter model, positioned as an affordable gateway into serious chip handling. It replaces simple vacuum cleaners and Shop-Vac solutions without demanding the space or price of a cyclone.

Specs (verified)

• Voltage: 230V single-phase, 16A fuse
• Motor: 1 HP (~0.75 kW)
• Airflow: approx. 1,400–1,500 m³/h (max, open port)
• Hose connection: 4 inches (100 mm)
• Filter: cartridge filter down to 1 μm (standard), 0.5 μm with fine-filter option
• Collection: chip bag below the cartridge filter
• Height: ~1.8 m (floor-standing)

Strengths

• Price: the lowest entry point in the Laguna ecosystem
• Simple: no cyclone chamber to maintain, just filter and bag
• Mobile: smaller footprint than the CFlux/PFlux
• Sufficient suction for individual machines: a table saw or a thickness planer one at a time

Limitations

• The filter clogs quickly at high chip volumes — you notice it as falling suction after ~30 minutes of continuous planing
• No separation before the filter — fine dust on the filter media reduces the effective open area
• Not suitable for several machines in parallel via a Y-connector — the suction pressure is not enough

Ideal users

Hobby workshop, 1–2 machines run at a time, 2–10 operating hours per week. Classic combination: BFlux 1 + table saw + occasional thickness planer. Also good as a secondary dust collector for a dedicated vacuum at a sanding station in a professional environment.

The difference between the standard BFlux 1 and the fine-filter version is the pore size of the filter cartridge — 1 μm vs 0.5 μm. When planing and sawing MDF or birch plywood you generate large amounts of particles in the 1–5 μm fraction. The fine filter captures the ones the standard filter lets through. The cost difference is small; the health benefit is large.

The CFlux range — the cyclone standard

The CFlux is Laguna's "workhorse" — cyclone separation in two sizes for everything from semi-professional to fully equipped joineries. It is the best-selling range and the best compromise between price, performance and maintenance.

CFlux 1 (230V) — mid-range

• Voltage: 230V single-phase, 16A
• Motor: 1.5 HP (~1.1 kW)
• Airflow: approx. 1,700 m³/h
• Hose connection: 6 inches (150 mm), reducible to 4 inches
• Filter: cartridge filter above the cyclone, down to 1 μm
• Collection: cyclone emptying via a 70-litre bin

The CFlux 1 is the step up from the BFlux: square cyclone + 1.5 HP + 6-inch port. It handles a table saw + thickness planer via a Y-connector without losing suction, and the filter lasts 2–3× longer than the BFlux thanks to the separation.

CFlux 3 (400V) — the professional workshop's choice

• Voltage: 400V three-phase, 16A
• Motor: 3 HP (~2.2 kW)
• Airflow: approx. 2,800–3,000 m³/h
• Hose connection: 8 inches (200 mm) main port, several 4/6-inch branches
• Filter: large cartridge filter, down to 1 μm (0.5 μm option)
• Collection: 100+ litre cyclone bin

The CFlux 3 is designed for central systems — permanent ducting to several machines at the same time. The 3 HP motor draws chips from an 8-inch main line without collapsing even when three machines are open in parallel. The mod.2022 version has an updated square cyclone and better filter placement.

When the CFlux beats the BFlux

• Continuous operation (> 5 hours/week) — cyclone separation keeps the filter open
• MDF, birch plywood, chipboard — materials that produce a lot of fine dust that would otherwise clog a cartridge filter
• Several machines — 6/8-inch port handles parallel operation
• Long-term investment — lower maintenance cost over 10+ years

Ideal users

CFlux 1: dedicated home workshop with 2–3 machines, 5–20 hours/week, an owner who values maintenance-free operation.

CFlux 3: sole trader or smaller joinery, central system with permanent ducting, 20+ hours/week, several machines at the same time.

The PFlux range — HEPA for health

The PFlux is the CFlux's health-conscious sibling: same cyclone, same motor, same airflow — but HEPA H13 filter instead of the standard cartridge. For professionals who breathe workshop air all day, this is not a luxury, it is occupational health protection.

PFlux 1 (230V) — HEPA in single-phase

• Voltage: 230V single-phase, 16A
• Motor: 1.5 HP
• Airflow: approx. 1,700 m³/h
• Filter: HEPA H13 cartridge, ≥ 99.95% at 0.3 μm
• Cyclone: square cyclone identical to the CFlux 1

The PFlux 1 is unique in the segment: most competitors offer HEPA only in their three-phase models. Laguna's PFlux 1 gives individual joiners the chance of HEPA without a 400V installation — great practical value for home workshops.

PFlux 3 (400V) — full professional class

• Voltage: 400V three-phase, 16A
• Motor: 3 HP
• Airflow: approx. 2,800–3,000 m³/h
• Filter: HEPA H13, large cartridge
• Cyclone: square cyclone identical to the CFlux 3

The PFlux 3 mod.2022 is the top of the stack. It is used in furniture joineries, school workshops and industries with occupational health requirements where respirable dust must be controlled measurably.

When to choose the PFlux over the CFlux?

<CompareTable caption="CFlux vs PFlux — when does HEPA matter?" columns={[ { key: "scenario", label: "Scenario", highlight: true }, { key: "rec", label: "Recommendation" }, { key: "reason", label: "Why" }, ]} rows={[ { scenario: "Hobby, 2–5 h/week, solid wood", rec: "CFlux is enough", reason: "Low total exposure time" }, { scenario: "Professional, 30+ h/week", rec: "PFlux", reason: "HEPA for long-term health" }, { scenario: "MDF, HDF, lacquer particles", rec: "PFlux", reason: "Fine synthetic dust is respirable" }, { scenario: "Allergies or asthma", rec: "PFlux", reason: "H13 captures irritant particles" }, { scenario: "School workshop / apprentices", rec: "PFlux", reason: "Occupational health duty to others" }, { scenario: "Edge-gluing oak/beech 1–2× a month", rec: "CFlux is enough", reason: "Occasional exposure" }, ]} />

Ideal users

PFlux 1: dedicated home joiner working several hours every evening, or a small business with a single 230V workshop where 400V is missing.

PFlux 3: professional joinery, furniture maker with MDF/HDF, training workshops — any context where documented health is part of the business.

Sizing — how much suction do you need?

Choosing the right Laguna model is as much about airflow per port as it is about filtration level. An undersized dust collector does not capture chips where they are produced — they swirl out into the room.

The rule of thumb: 280 m³/h per inch

The industry standard (ASHRAE Industrial Ventilation / Air Movement and Control Association) is ~280 m³/h of airflow per inch of hose diameter at the machine port for effective capture [6]:

<CompareTable caption="Airflow requirement per machine (m³/h at the machine)" columns={[ { key: "machine", label: "Machine", highlight: true }, { key: "port", label: "Port" }, { key: "flow", label: "Requirement" }, { key: "laguna", label: "Laguna choice" }, ]} rows={[ { machine: "Table saw (hobby)", port: "4 inches", flow: "~800 m³/h", laguna: "BFlux 1 is enough" }, { machine: "Bandsaw", port: "4 inches", flow: "~800 m³/h", laguna: "BFlux 1 is enough" }, { machine: "Thickness planer / jointer", port: "5–6 inches", flow: "~1,500–1,800 m³/h", laguna: "CFlux 1 / PFlux 1" }, { machine: "Router table", port: "4 inches + top", flow: "~1,200 m³/h", laguna: "CFlux 1" }, { machine: "Combination machine (multiple ports)", port: "6–8 inches", flow: "~2,000 m³/h", laguna: "CFlux 3 / PFlux 3" }, { machine: "Wide thickness planer 400 mm+", port: "6 inches", flow: "~2,200 m³/h", laguna: "CFlux 3 / PFlux 3" }, ]} />

Parallel operation — sum the flows

Are you running several machines at the same time via Y-connectors? Sum their flow requirements and add 20% margin for hose losses, bends and leaks. Example: table saw (800) + thickness planer (1,800) in parallel = 2,600 m³/h + 20% = 3,120 m³/h. Here the CFlux 3/PFlux 3 is the only choice.

Practical matching

• 1 smaller machine at a time (230V workshop): BFlux 1 is enough
• 1–2 normal-sized machines, sometimes in parallel: CFlux 1 or PFlux 1
• 2–3 professional machines, central system with ducting: CFlux 3 or PFlux 3
• Larger joinery with 4+ machines: CFlux 3/PFlux 3 with well-thought-out ducting and, where appropriate, blast gates

Hose routing — every bend costs

Airflow falls with length, cross-section reduction and bends:

• 90° bend: equivalent to ~2 metres of straight hose in pressure loss
• 45° bend: equivalent to ~1 metre
• Reduction from 6 inches to 4 inches: ~30% flow loss
• Flexible hose instead of smooth pipe: ~2–3× more loss per metre

Practical rule: keep the main line at the largest possible diameter (6–8 inches), use 45° bends wherever possible, and only reduce to a smaller size at the machine.

Noise level and installation

All Laguna dust collectors use sound-insulated fan housings and balanced impellers. The noise level sits in the 72–78 dB(A) range at 1 metre, which is better than generic Chinese dust collectors (85–90 dB) but still high enough to justify hearing protection during long stays in the same room.

Noise levels (manufacturer data, ~1 m distance)

• BFlux 1: ~72 dB
• CFlux 1 / PFlux 1: ~75 dB
• CFlux 3 / PFlux 3: ~78 dB

Placement recommendation

Preferably outside the actual working workshop — in a separate ventilation space, sound-insulated cabinet or adjoining room. This dramatically lowers the workshop's noise level and also extends your own stamina over a working day.

Electrical installation

• BFlux 1, CFlux 1, PFlux 1: 230V single-phase, 16A fuse — standard in every Swedish workshop
• CFlux 3, PFlux 3: 400V three-phase, 16A fuse per phase — requires a three-phase installation

A three-phase installation typically costs SEK 5,000–15,000 depending on your current main consumer unit and the distance to the main fuse. If you do not have 400V installed, weigh the cost against choosing the 230V model instead (CFlux 1 or PFlux 1). For many workshops the 1 series is enough and avoids the electrical installation.

HEPA or standard — does it really matter?

Short answer: yes, for anyone exposed daily. Here is the background.

Standard cartridge filter (1 μm)

Captures coarse chips and the majority of visible dust. Particles in the 1–5 μm range are partially let through — exactly the range that reaches deep into the bronchi. Over a working day this means thousands of particles per cubic metre of workshop air.

HEPA H13 (0.3 μm MPPS)

Captures ≥ 99.95% of the hardest particles (those in the 0.1–0.3 μm size range, which are paradoxically the hardest to filter because they move in Brownian motion instead of impacting the filter head-on). These are the same particles that reach the alveoli — in other words the fraction that causes permanent lung damage during long-term exposure.

The cancer risk is documented

IARC Monograph 100C (2012) classifies wood dust as a Group 1 carcinogen to humans, based on epidemiological evidence for cancer of the nose and sinuses in occupationally exposed joiners [1]. The risks rise linearly with exposure time; a hobbyist with 3 hours/week has negligible risk, while a full-time joiner without good dust extraction runs a statistically significant elevated risk.

For a professional joiner working 40 h/week for 30 years the exposure adds up to ~60,000 working hours. Every percentage point of filtration improvement is multiplied by that time. HEPA H13 gives a 10–50× better filtration factor for respirable dust compared with a standard cartridge — that is the difference between COPD at 65 and continued joinery at 75.

Maintenance and filter changes

The dust collector's economics over 10 years are as much about consumables as about the initial cost.

Maintenance schedule

• Daily (at high use): empty the cyclone bin / chip bag when it is ~70% full
• Every week: inspect hoses and couplings for leaks
• Every month: clean the cartridge filter with compressed air (outside the workshop — the dust is shaken out)
• Every 6 months: check the HEPA filter with a light source/smoke test for leaks
• Every 12–24 months: replace the filter cartridge (depending on use)

Filter cost per year

• BFlux 1 cartridge filter: ~SEK 800–1,200, replaced every 12–18 months
• CFlux 1/3 cartridge filter: ~SEK 1,000–1,500, replaced every 18–24 months
• PFlux 1/3 HEPA filter: ~SEK 1,800–2,500, replaced every 18–24 months

Replacement filters — original parts

Ernst P stocks original filters for every model:

Third-party filters may seem cheaper but often have worse pore distribution and lack H13 certification (for HEPA). For the PFlux models, original filters are the only way to maintain the certified performance.

Decision guide — which one suits you?

**Home workshop, occasional projects, hobby hours** → **BFlux 1** (or BFlux 1 fine-filter for MDF)

Dedicated workshop, 2–3 machines, 5–20 h/week → CFlux 1 (or CFlux 3 if 400V is available)

Professional, 30+ h/week, long-term exposure → PFlux 1 (230V) or PFlux 3 (400V)

Larger joinery with parallel operation, central system → CFlux 3 or PFlux 3 with an 8-inch main line

School workshop / training environment / occupational health requirements → PFlux 3 — a duty of care for others

Budget factor: the price step from BFlux 1 → CFlux 1 → PFlux 3 is roughly 1× → 2× → 4×. Do not let the budget steer entirely — a CFlux 1 bought instead of a BFlux 1 saves hundreds of hours of maintenance and provides significantly better health protection over 10 years.

Mains factor: no 400V? Then the CFlux 1 or PFlux 1 is the highest realistic purchase — and the PFlux 1 is a uniquely accessible HEPA alternative for 230V workshops.

Material factor: if you mostly work in solid wood a standard filter is OK. If you regularly work with MDF, HDF, lacquered or painted material, or with glue/resin residues, upgrade to the HEPA model.

Common mistakes

1. Undersizing the dust collector

"The old Shop-Vac is probably enough for the thickness planer" — no, it isn't. A 1.5 kW wet/dry vacuum delivers ~200 m³/h; the thickness planer needs ~1,800 m³/h. The result is that 90% of the chips stay in the workshop air. Size for the most chip-intensive machine you own.

2. Using an ordinary workshop vac as a dust collector

Wet/dry vacuums are built for intermittent use and have small filter areas. Under continuous chip feed the motor overheats and the filter clogs within minutes. They also have the wrong filter class — usually only H10 or worse. A dedicated dust collector is not a luxury, it is the right tool.

3. Forgetting hose losses

A dust collector rated at 1,700 m³/h on paper delivers ~1,200 m³/h in reality after 4 metres of flexible hose and two 90° bends. Factor this in. Keep the hose short, straight and at the largest possible diameter.

4. Skipping HEPA when you should have it

"I'm young and healthy, I can handle a bit of dust" — long-term wood dust exposure is cumulative. The symptoms show up in 20 years, not tomorrow. If you are planning 20+ years as a joiner, choose HEPA from the start.

5. Ignoring blast gates and central systems

A single main line without shut-off valves (blast gates) splits the suction pressure between every port. The result: no single machine gets full flow. Blast gates on every machine outlet ensure that 100% of the flow goes to the active machine.

Summary

The choice between the Laguna BFlux, CFlux and PFlux ultimately comes down to three variables: runtime, filtration needs and available voltage. The BFlux 1 is the right entry-level model for the hobby workshop — simple, affordable, enough for individual machines. The CFlux range adds cyclone separation that dramatically extends filter life and delivers constant suction pressure, making it the best value for dedicated home workshops and semi-professionals. The PFlux adds HEPA H13 for those who work daily in the workshop air, and who want their lungs to work as well at 70 as they did at 40.

For 230V workshops, the PFlux 1 is one of the few HEPA alternatives on the market. For three-phase joineries, the CFlux 3 or PFlux 3 is the natural choice — and the price difference between them is small compared with the difference in health protection over a career. Whichever model: no dust collector is worth more than the one that actually runs. Build the right ducting, use blast gates, start the dust collector before the machine — and you have solved 90% of the workshop's health risks.

Related

• Sanding sponges and sanding pads — complete guide
• Laguna Fusion 1 vs 2 vs 3 — choosing the right table saw
• Jointer vs thickness planer — difference and order
• See every dust collector in the range

Sources

Last updated 2026-04-18. Specifications verified against primary sources.

1. IARC Monograph 100C — Wood Dust. International Agency for Research on Cancer. Wood dust classified as a Group 1 carcinogen to humans (cancer of the nose and sinuses). monographs.iarc.who.int/wp-content/uploads/2018/06/mono100C-16.pdf
2. Laguna Tools — BFlux Dust Collector (official). Specifications for the 1 HP motor, 1 μm cartridge filter, 0.5 μm fine-filter option. lagunatools.com/dust-collection/bflux
3. Laguna Tools — CFlux Cyclone Dust Collector Series (official). CFlux 1 (1.5 HP/230V) and CFlux 3 (3 HP/400V) specifications, square cyclone mod.2022. lagunatools.com/dust-collection/cflux-cyclone
4. Laguna Tools — PFlux HEPA Cyclone Dust Collector (official). HEPA H13 filter, 99.95% at 0.3 μm, PFlux 1 (230V) and PFlux 3 (400V). lagunatools.com/dust-collection/pflux
5. EN 1822-1:2019 — High efficiency air filters (EPA, HEPA and ULPA). European standard for HEPA classification, including H13 ≥ 99.95% at MPPS. standards.cencenelec.eu
6. ASHRAE Industrial Ventilation — A Manual of Recommended Practice (29th ed.). Sizing rules for dust extraction in woodworking, ~280 m³/h per inch of port. ashrae.org
7. OSHA 29 CFR 1910.1000 — Air Contaminants (Wood dust). US occupational health standard with a TLV of 1 mg/m³ for respirable wood dust — a practical reference value in Sweden too, where AFS 2018:1 sets hygienic limit values. osha.gov