What Goes Into the Shop: Equipment Checklist

A diesel particulate filter business plan can describe three quite different companies, and the first job of the plan is to say which one you are building. The first is a cleaning and restoration shop: fleets, owner-operators and repair garages send you clogged filters, you remove ash and soot, test airflow, and ship them back with a certificate. The second is a remanufacturer, which strips cores, replaces substrates and sells rebuilt units. The third is a retrofit supplier fitting filters to equipment that never had them. This template is written mainly around the first model, because it needs the least capital, has a clean unit of sale (one filter, one invoice), and is the model that most lenders can understand in a single page. The remanufacturing and retrofit sections later in the guide show where the numbers diverge.

Everything in a cleaning shop starts with the equipment, so that is where the plan should start too. Lenders ask for equipment quotes before they ask for anything else, and the quotes drive your depreciation line, your insurance premium and your floor space.

The core process line

A filter moves through a fixed sequence, and each step needs a station. The usual flow is intake and inspection, thermal bake, pneumatic or pulse cleaning, airflow testing, and final inspection with documentation.

• Thermal oven (bake-out). Burns off soot and hydrocarbons at controlled temperature with a programmed ramp so the ceramic is not shocked. A standalone oven from Filtertherm lists at roughly $17,000, and a complete thermal package (oven, pulse machine, inspection table and cool-down cart) is quoted at $51,000. Source: DPF Parts Direct equipment listing.
• Pulse or pneumatic cleaner. Blows ash out of the channels with controlled air bursts after the bake. Donaldson's pulse cleaner is advertised at around 15 minutes per filter. Pneumatic units with upper and lower air knives, such as the FSX TrapBlaster, clean from both ends. Source: Filtertherm cleaning packages.
• Cool-down cart. A bake-out leaves a filter hot enough to crack if it meets cold air or a steel bench. A wheeled cart with an insulated top is a small cost that prevents expensive scrap.
• Inspection table with light bar. Technicians look through the channels for cracks, melted substrate and glazing. Photographing every filter before and after is the cheapest warranty defence you will ever buy.
• Flow bench or back-pressure tester. Measures airflow against a reference so you can state, in writing, that the filter now flows within a stated percentage of new. Budget about $4,000 to $9,000, depending on whether you want logging and printable certificates.
• Aqueous cleaning machine (optional). Water-based systems matter if you handle heavy oil contamination or want to offer a second process. The aqueous package listed on the same supplier page carries an MSRP of $82,500, which is why most first shops skip it in year one.

The supporting kit that gets forgotten

• Ash capture and HEPA vacuum. Ash is a regulated waste stream in most places, and a fine-particle vacuum keeps it out of the air in your bay. Many shops pair a pulse cleaner with a dedicated ash collector.
• Three-phase power and gas supply. Ovens draw heavily. A shop that signs a lease before checking the electrical service can face a utility upgrade bill larger than the oven itself.
• Hoist, pallet racking and a parts washer. Truck filters can weigh well over 50 lb once wrapped in housing, and you will be handling 10 to 20 a day at volume.
• Barcode or QR tagging. A tag on every filter ties intake photos, flow readings and a customer record together. This is where your job-tracking software earns its monthly fee.
• Pickup van or box truck. Fleet customers rarely drive filters to you. A used van with a lift gate is the single biggest sales tool in the first year.
• Packaging. Foam end caps, shrink film and cartons. A returned filter that arrives cracked in transit is a charge-back you could have avoided for a few dollars per unit.

One practical point from reading dozens of equipment proposals: the cheapest oven is rarely the cheapest oven to run. Ask each vendor for gas or electricity consumption per cycle, cycle time, and how many filters fit in one load. A unit that completes a cycle 40 minutes faster pays back its price difference in labour alone once you pass about 60 filters a month. Put those comparisons in the operations chapter of your plan. Lenders who have financed machine shops know that throughput per hour is the number that decides whether the equipment loan is repaid.

Startup Budget, Line by Line

Published figures for DPF businesses vary widely because they describe different models. A franchise listing for the DPF Alternatives network shows a total investment range of $64,000 to $289,000 with a $750 monthly royalty, which tells you how wide the spread is even inside a single brand (Franchise Payback, 2026). An independent shop buying a thermal package, leasing 3,000 square feet and running one pickup van lands in the middle of that range. The table below is an Avvale estimate built from the supplier prices quoted in this guide plus typical industrial rents and insurance; treat it as a starting point and replace every line with a real quote.

Why the lean version exists, and what it costs you

The lean $95,000 build swaps the new package for a used oven near the $17,000 mark, rents a bay inside an existing diesel repair garage rather than leasing a building, and skips the van by using a partner garage's pickup runs. It works, but it caps your throughput at about 40 filters a month and makes you dependent on one host. Lenders will ask what happens if the host closes. Have the answer written down.

The full $260,000 build adds the aqueous machine, a second technician from month one and a larger unit with a loading dock. This version suits an owner who already has fleet contracts waiting, for instance a former service manager at a regional truck dealer.

Funding routes that fit this business

• SBA 7(a) or SBA Express (US). A cleaning shop is a conventional equipment-heavy small business. Expect lenders to want 10 to 20 percent equity, a personal guarantee, a lien on the oven and package, and two years of industry or operating experience from the owner.
• Equipment financing. Suppliers such as Filtertherm and Redline Emissions Products sell through dealers who often arrange lease-to-own on the package, which keeps the oven off your general credit line.
• Start Up Loans (UK). Up to £25,000 per founder at a fixed 6 percent, enough to cover van, insurance and deposit, with the oven financed separately.
• Franchise route. If you want a brand, training and supplier terms bundled in, the DPF Alternatives model shows the cost of that convenience: a monthly royalty on top of the entry fee.
• Seller anchors. A signed letter of intent from one fleet for 20 filters a month is worth more to an SBA lender than a market study. Put it in the appendix.

Where the plan commonly fails the lender's review: the equipment appears but the revenue ramp does not match it. If the oven is delivered in month two, filters cannot be cleaned in month one. Build the revenue schedule from the delivery and commissioning date, not from the lease start date.

Where to Buy: Suppliers and Reference Competitors

The plan needs named suppliers. A line reading "equipment from industry vendors" signals that the founder has not yet priced anything. The vendors below are real operators in this niche, drawn from public listings. We have not verified lead times or current prices, so request fresh quotes.

Equipment and parts sources

• Filtertherm. US maker of thermal ovens and complete cleaning packages for heavy-duty fleets, including pulse and pneumatic stations. Package overview.
• Redline Emissions Products (REP). Distributor of thermal and aqueous systems, plus consumables for shops that want to add cleaning to an existing parts counter. Equipment range.
• DPF Parts Direct. Online catalogue listing cleaning machines, packages and accessories in one place, useful for comparing prices across brands. Cleaning equipment collection.
• Donaldson. Manufactures the pulse cleaner referenced by several packages and sells replacement filters through its aftermarket channel.
• Enviromotive (UK). Publishes equipment and process guidance for UK DPF cleaning operators. Equipment page.
• dpfcleaning.com. Sells equipment and publishes service content aimed at shops adding DPF cleaning as a line. Equipment overview.

Competitors worth studying before you write the plan

Look at what the table says about positioning. The Dallas shop competes on turnaround, with a $70 premium between overnight and same-day. Pride competes on service tier. The franchise competes on brand and consistency. A new shop that simply charges "a bit less" has no story, and a lender who reads three competitor sites will see that quickly. Choose one axis (speed, documentation, fleet account management, or a defined territory) and write the plan around it.

For adjacent business plans in the same cluster, see our templates for diesel engine repair, emission testing and diesel exhaust fluid. Several founders combine DPF cleaning with one of these as a second revenue line.

Permits, Tampering Law and Waste Rules

This is the section where a DPF plan either earns trust or loses it. The business sits next to a heavily enforced area of law, and your lender, insurer and landlord will all want to know which side of the line you operate on.

United States

• Clean Air Act Section 203 (tampering). Removing or disabling an emissions control system on a road vehicle is illegal. Published summaries put penalties from $2,500 up to about $45,268 per vehicle, and up to about $48,192 for sellers or manufacturers of defeat devices. The EPA has reported settling more than 70 cases in five years against shops, tuners and parts sellers. Sources: LegalClarity summary and REP's DPF delete overview.
• What it means for you. A cleaning shop restores the filter so it is reinstalled. A shop that hollows out a substrate and returns the shell has become a delete shop. Your plan should state, in a single sentence, that you will not accept a filter that has been gutted and will not return one without a ceramic substrate intact.
• State and local business licence. Standard commercial registration plus a certificate of occupancy for an industrial or light-industrial zone. Check whether the bake process needs an air permit from your local air district; some districts regulate ovens by BTU rating.
• Hazardous waste determination. Spent ash can contain metals from lubricant additives. Test a batch with a lab before you decide how to dispose of it. Your plan should name the waste hauler.
• OSHA basics. Silica and metal dust exposure, hot-surface handling, lockout on ovens, and respiratory protection. Include a written safety programme as an appendix.
• Insurance. General liability, garage keepers liability (customer property in your care), pollution coverage, and workers compensation. A dropped $6,000 truck filter is a claim, so confirm the garage keepers limit.

United Kingdom

• Road Vehicles (Construction and Use) Regulations 1986, regulation 61A. Using a vehicle on a road with emissions equipment removed or rendered inoperative is an offence, with published maximum fines of £1,000 for cars and light goods vehicles and £2,500 for goods vehicles over 3.5 tonnes. DPF removal also fails the MOT, and DVSA tester guidance has required a visual check of the filter housing since February 2014. Source: DPF Clean Team legal explainer and WJJ Autos UK law summary.
• Waste carrier registration. If you collect and transport waste, which can include removed filters and cleaning residue, you must register with the Environment Agency (or the equivalent body in Scotland, Wales and Northern Ireland). Trading without it risks an unlimited fine. Source: The First Mile guide.
• Duty of care. Written transfer notes for ash and spent media, kept for two years.
• Premises. Planning use class B2 for general industrial; confirm with the local authority if you operate a bake oven near residential neighbours.

Germany and the wider EU

Germany is a useful third comparison because DPF history there is tied to low-emission zones rather than test-station penalties. When Umweltzonen were introduced in 2008, many owners fitted retrofit particulate filters to earn the green sticker, and workshops still do such retrofits for several hundred euros. For newer standards the picture is different: reports in 2025 note that retrofit offers for private cars are largely gone, and SCR retrofits for Euro 5 diesels ran about €1,500 to €2,000 when they were available. Source: Bussgeldkatalog. The practical lesson for a plan: regulation moves, and a shop that depends on a single compliance scheme is exposed when the scheme ends. Diversify across fleets, construction equipment and agricultural machinery.

Where cleaning stops being legal

There is one more boundary to write down. Cleaning is legal when the filter goes back on the vehicle with its monolith intact and the vehicle's software still regenerates correctly. It becomes risky if a customer asks you to "clean it and tell the ECU it is not there," or to supply a hollow shell. Customers will ask. Some of the largest EPA settlements involved businesses that began by selling legitimate services. Decide your refusal policy before the first call, write it on your intake form, and make it part of your insurance disclosure.

Pricing, Margins and a Worked Month

The unit of sale is one filter, which makes the revenue model easy to explain and easy to stress-test. Published off-vehicle cleaning prices run from about $190 at the low end to $1,000 at the high end, with most quotes landing between $300 and $600 (Filtertherm cost guide). Replacement is the alternative the customer is comparing against, at $2,500 to $10,000 depending on the engine. That ratio is the whole sales pitch: a $350 cleaning that avoids a $5,000 part.

Revenue streams

• Standard cleaning. Bake plus pulse clean, flow test and certificate. The core product at $300 to $450.
• Rush service. Same-day turnaround at a 25 to 40 percent premium. The Dallas example above shows $190 versus $260.
• Pickup and delivery. Charged per stop or bundled into fleet contracts.
• Wholesale to repair shops. Independent garages that do not own the equipment send filters to you at a discounted trade rate in return for volume.
• Ash cleaning contracts. Scheduled cleaning on a mileage or hours interval for fleets. EPA minimum ash cleaning interval guidance starts around 150,000 miles; some engine makers set it at 200,000 to 250,000 miles for 2007 engines depending on oil spec, and highway trucks can run as far as 350,000. Source: Heavy Vehicle Inspection and DieselNet. A fleet of 40 trucks on a 250,000 mile cycle generates predictable work.
• Remanufactured units (phase two). Selling a rebuilt filter on an exchange basis is a higher-ticket line, but it needs core inventory and carries warranty exposure.

A worked month at 80 filters

The example below shows a single shop in its second year, cleaning 80 filters in a month at an average price of $340. Costs are Avvale planning assumptions; the point is the shape, not the decimals.

The break-even sits at 56 filters a month. Fixed costs including labour total $16,003, and each filter contributes $285.60 after the 16 percent of revenue that scales with volume. Divide and you get 56.0. That number is the headline of the revenue chapter: you need roughly two filters per working day to cover the business, and everything past that drops to profit at about 84 cents on the dollar until you need a third technician.

Treat the 25 percent figure with care. It excludes owner pay, depreciation of the van and a bad-debt reserve. If you work in the shop yourself, your pay arrives as technician wages; if you do not, put a manager line in. A realistic net margin for a well-run shop after those items is closer to 12 to 18 percent. Other published guides quote higher gross margins, but they usually omit labour or pickup costs. Build your own from quotes.

Where the margin leaks

• Remakes. A cracked substrate after bake is your loss, not the customer's. Track scrap by technician.
• Unpriced pickups. A 40-mile round trip for one filter wipes out the profit. Set a minimum order or a zone fee.
• Slow-pay fleets. Net-60 terms on large accounts need working capital. The $30,000 in the startup budget is there for this reason.
• Overstated throughput. A single oven that handles two filters per cycle with a 3-hour cycle processes about 4 to 5 filters in a day once cool-down is counted, not 10.

Market Size and Where Demand Comes From

Market reports disagree in the details but agree on direction. One estimate values the global diesel particulate filter market at $16.86 billion in 2025, growing at a 7.7 percent compound annual rate to $30.53 billion by 2033 (Straits Research). Another finds that original-equipment deliveries made up 73.12 percent of the market in 2024, with aftermarket revenues forecast to grow at a 4.78 percent compound rate to 2030 (Mordor Intelligence). Another report puts aftermarket sales near 40 percent of the combined oxidation catalyst and particulate filter market. These are manufacturer-side figures. A cleaning shop captures a thin slice of service spend, not the new-filter market, so use the numbers to show direction, not to claim share.

Demand drivers a local plan can use

Local demand comes from three sources, and your plan should size each one with a local count, not a national percentage.

• Fleet age. Trucks built since 2007 in the US carry filters, and many are now past their first ash-cleaning interval. Every fleet with 2010-plus equipment is a candidate. Count fleets within 60 miles using state motor carrier records.
• Equipment and construction. Off-road machines with Tier 4 engines have filters too. Excavators and generators sit idle at low load, which clogs filters faster than highway miles do.
• Independent repair garages. Most do not own cleaning equipment and will outsource. They are the cheapest customer to acquire because one relationship brings repeat volume.
• Cost pressure. Replacement quotes of $2,500 to $10,000 make a $300 to $600 cleaning an easy sell. Fleet managers who track cost per mile find the case straightforward.

The risk side matters too. Long-term, electrification will reduce diesel registrations, but the installed base of diesel trucks and equipment has a long life, and the service need follows the installed base, not new sales. Write that logic into the plan and show a mid-decade sensitivity: what happens to filter volume if your region's diesel truck count falls 2 percent a year?

Questions Operators Ask Before Opening

These are the questions that surface most often in search results and in conversations with founders. Short answers are below; the plan template expands each into a section with your own numbers.

Is DPF cleaning worth it?

For most heavy-duty operators, yes. Cleaning at $300 to $600 defers a replacement that costs $2,000 to $8,000 or more on a typical truck, and fleets that clean on schedule report fuel economy gains in the 3 to 5 percent range, according to supplier case material such as the 30 Minute DPF Clean benefits list. Treat supplier claims as marketing: the plan should use your own measured before-and-after back-pressure readings instead.

How often does a filter need cleaning?

It depends on duty cycle and oil. OEM guidance commonly runs from 120,000 to 200,000 miles, or every 6 to 12 months for hard use, and retrofit units may need cleaning closer to every 60,000 miles. Stop-and-go urban work clogs filters faster than highway running. For your forecast, segment customers by duty cycle and assign each a cleaning frequency; do not assume one average.

What is the difference between regeneration and cleaning?

Regeneration burns soot inside the vehicle at high exhaust temperature, either passively on the road or actively with injected fuel. It does nothing about ash, which is non-combustible residue from oil additives. Off-vehicle cleaning removes ash, which is why a filter can regenerate normally and still be restricted. On-vehicle service runs about $150 to $600, off-vehicle $300 to $1,000, per the Filtertherm cost guide cited earlier.

Is removing a DPF legal?

No, on road vehicles in the US and UK. See the licensing section above. For your business model, the practical question is not whether it is legal but how you will refuse the request when a regular customer makes it.

Break-Even Calculator

Change the four inputs to see monthly profit and the number of filters needed to cover costs. The defaults match the worked month in the pricing section.

Try it two ways. First, drop the price to $260 to match a same-day competitor and see how many more filters you need. Second, remove the second technician by cutting $4,600 from fixed costs and check what happens to break-even at 40 filters. The comparison shows why the staffing decision is the largest lever in the model.

Sample Business Plan Preview

This is a short extract of the executive summary for a fictional shop, to show the level of detail lenders expect. The full template follows the same structure for every chapter.

What Is in the Template

The diesel particulate filter template is built for a service business with a physical process line. Every section has prompts written for this niche, so you are filling in your own numbers, not deleting someone else's.

• Executive summary. A one-page structure with a funding ask, use of proceeds and the three facts a lender reads first.
• Company and ownership. Entity structure, owner experience, and the compliance statement on tampering and ash handling.
• Services and pricing. Cleaning tiers, rush premiums, trade rates, ash contracts and a competitor price table you complete from local quotes.
• Market analysis. Prompts to count local fleets, garages and equipment owners, and to size each segment by filters per year.
• Operations plan. Process flow, equipment schedule, capacity calculation, quality control and warranty policy.
• Sales and marketing. Fleet account outreach, garage referrals, local search, and a first-90-days calendar.
• Regulatory and risk. Fill-in tables for permits, insurance, waste hauler and an incident log.
• Financial model structure. Startup budget, monthly P&L for year one, annual years two to five, break-even and debt service coverage. The $300 and $1,000 packages include the full Excel model.
• Appendices. Equipment quotes, letters of intent, resumes, lease terms and sample certificate.

Prefer to see how Avvale approaches adjacent engineering-led businesses? Read the Tejano Mechanical business plan and the Ventarus Engineering business plan. For a general starting point, see the free business plan template page or compare our business plan writing service.

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