Short answer: use three numbers, not one quote
If you're asking should i repair or replace my dust collector?, start here: repair if the unit is under 10 years old, the frame and ductwork are solid, and the repair quote is under 45% of a new installed unit. Replace if the unit is over 12 years old, the impeller/motor/control panel is obsolete, or downtime is costing you more than $1,500 a day. The deciding number isn't the repair quote—it's the total cost per operating hour over the next 24 months. That's the whole answer. The rest is just how I learned to calculate it without wasting another $5,000.
I've been handling clarke floor scrubber parts and industrial cleaning equipment orders for 9 years. I've personally made—and documented—14 significant mistakes, totaling roughly $23,000 in wasted budget. Now I keep our team's repair-or-replace checklist. I'm not a corporate repair guy. I'm the person who ordered the wrong motor, missed a lead time, and paid for a rental unit because I thought a $1,900 repair was obviously cheaper than a $6,800 replacement.
Why I don't trust the repair quote alone
In September 2022, a facility manager asked me about a 12-year-old dust collector. The motor had seized. Repair quote: $1,900. New unit: $6,800 installed. On paper, repair won by a mile. But we didn't check the impeller lead time. The impeller was backordered 6 weeks. They ran without proper dust control for 9 days, rented a temporary collector for $1,200 a week, and paid overtime to reroute work. Total: $1,900 repair + $2,400 rental + $1,100 overtime = $5,400. The new unit would've been installed in 3 days.
The surprise wasn't the repair price. It was the rental cost. We would've been ahead by day 4 with a replacement. That's when I stopped treating repair vs. replace as a purchase decision. It's a downtime decision.
Another one: in my first year (2017), I made the classic specification error. I assumed 'standard' meant the same thing to every vendor. I ordered a replacement motor for a dust collector without checking the nameplate frame size. It looked fine on my screen. The result came back: wrong shaft, wrong mounting. $600 redo plus a 1-week delay. That's when I learned: get the serial number, take a photo of the nameplate, and ask the vendor to confirm the part number in writing.
The 3-number check I use now
This takes about 20 minutes. It's saved us from at least 47 bad repair decisions in the past 18 months—or at least made us ask better questions. Switching to this checklist cut our repair-or-replace reviews from 5 days to 2. That's not a huge number, but over a year it kept 3 lines running.
- Parts availability. Can you get the critical parts—impeller, motor, control board, filter cage—in under 3 weeks? If a key part is obsolete or has a 6-week lead time, replace. For Clarke floor scrubber parts and automated floor sweeper components, availability is usually decent because Clarke supports parts and service. But dust collectors are different. If the OEM stopped making the impeller in 2019, you're one failure away from a forced replacement.
- Repair quote as a percentage of new installed cost. Under 40%: repair. 40–50%: repair only if the unit is under 8 years old and parts are available. Over 50%: replace. I use installed cost, not list price, because rigging, electrical, ductwork, and disposal can add 20–35%.
- Downtime cost per day. Add lost production, rental equipment, extra labor, and any compliance risk. If downtime is over $1,500 a day and the repair lead time is over 2 weeks, replacement usually wins. If downtime is low and the repair is a wear item—filter bags, hoses, gaskets, bearings—repair.
As of January 2025, I've seen 2,000–5,000 CFM industrial dust collectors installed for roughly $8,000 to $25,000, depending on filtration, explosion venting, and controls. These are quotes we received in Q4 2024 from two vendors for a client project. Verify current pricing—steel and motor prices move.
Where this applies to scrubbers, sweepers, and pressure washers
The same logic works beyond dust collectors. If you're ordering clarke floor scrubber parts, ask whether you're replacing a wear item or rebuilding a tired machine. Squeegee blades, brushes, hoses, and motors are usually worth repairing. A rusted frame, cracked tank, or obsolete control board on a 12-year-old scrubber? Replace.
On an automated floor sweeper, batteries and brushes are normal maintenance. But if the battery pack costs 35–40% of a new sweeper and the chassis has rust in the hopper, replace. I learned that one the hard way in Q1 2024: we approved a $2,800 battery set for a sweeper that had already been welded twice. It died again in 4 months. The third rejection—actually, the third repair quote—forced us to replace it anyway.
Even a maxshine pressure washer follows the same math. If the pump is serviceable and the unloader valve is available, repair. If the pump housing is cracked and the model was discontinued, replace. Don't spend $180 repairing a $250 unit unless you need it running today and a new one is 3 weeks out. I've done that. It felt efficient. It wasn't.
One more thing: if you're so done with your current facility that you're searching 'land for sale clarke county ms,' call a broker. But if you're staying, don't replace a dust collector just because it's old. Replace it because the parts, downtime, and compliance math says so.
What I check before I sign off
Here's the actual pre-check list I keep taped inside our parts desk. It's not fancy.
- Nameplate photo, serial number, and current part numbers.
- Written lead time for every critical part—not just the failed one.
- Repair quote with labor, freight, and tax. Compare to installed replacement quote.
- Downtime cost per day: production loss + rental + overtime + compliance risk.
- 24-month total cost: repair + expected second repair + rental vs. new + install + training - resale.
- Regulatory check: does the new unit change your NFPA 652 dust hazard analysis or OSHA exposure controls?
According to OSHA's combustible dust guidance, dust layers as thin as 1/32 inch can be hazardous. If your current collector is leaking fine dust and you're patching it every quarter, you're not saving money. You're borrowing against a future incident. Per NFPA 652, facilities handling combustible dust need a dust hazard analysis (DHA). Verify current requirements at nfpa.org and osha.gov.
When repair is still the right call
I don't want to pretend this is always a simple math problem. If your dust collector is custom-integrated into ductwork, explosion venting, and a permitted system, replacement can trigger engineering, permits, and 2–4 weeks of downtime. In that case, repair may be the only practical option even if the quote looks high. Same if you're leasing the building and the landlord owns the system. And if you're moving in under 12 months, rent or repair short-term—don't buy a new collector for a building you're leaving.
If you need a bridge unit while parts come in, ask about rental or pre-owned options. Clarke offers them, and so do other suppliers. Just price the rental into the repair math before you approve it.
Also, if the unit is under 5 years old and the repair is a known wear item, just repair it. Don't overthink it. The efficiency gain from a new unit won't show up for years.
So: get the three numbers. If repair is under 45% of installed cost, parts are available in under 3 weeks, and downtime is manageable, repair. If any of those fail, replace. That's the rule I use—and the rule I wish I'd had before I wasted $5,400 on a repair that should've been a replacement.
