Laundromat Water Bill Revenue Cross-Check
This laundromat water bill calculator cross-checks revenue against metered consumption, converting gallons into a range of implied washer cycles using per-cycle water use for your actual machine mix. It highlights differences to investigate, including leaks, timing and machine-use assumptions. It cannot confirm revenue to the dollar, and never produces a single ratio.
Key takeaways
- The output is a range, because per-cycle use varies by model, capacity, and cycle selection.
- It neither proves nor disproves revenue alone. Use it inside a six-source reconciliation, never alone.
- Rule out a leak first. Read the meter with everything off before drawing any conclusion about a seller.
- Replace the default gallons-per-cycle figures with manufacturer data for the models actually installed.
- ENERGY STAR certified commercial washers use about 45% less water than standard models (Source: ENERGY STAR) — assuming the wrong generation breaks the whole calculation.
Model limit: Weighted averages assume equal annual cycles per washer, regardless of capacity. These are scenarios, not statistical bounds. Use machine-level cycle records when available. A mismatch cannot establish overstated or unreported income by itself.
How Does the Calculation Work?
Step 1. Annual billed water, less an estimate of non-machine use. The low and high non-machine figures produce the two ends of the machine-water range.
Step 2. A machine-count-weighted average gallons per cycle across the machine mix, computed twice — once with the low per-cycle assumptions and once with the high ones.
Step 3. Implied cycles. Note the pairing: the high cycle estimate uses the low gallons-per-cycle figure and the smaller non-machine deduction, because fewer gallons per cycle means more cycles fit into the same consumption. The low estimate pairs the opposite way. That produces a genuine bracket and not a false midpoint.
Step 4. Implied vend revenue, using a machine-count-weighted average vend price.
Step 5. Implied turns per day, as a sanity check. Turns per day is paid washer cycles divided by installed washers and days. If the top of your range implies turns far above what you observed standing in the store, something in the inputs is wrong — usually a leak or a miscounted machine.
What does a mismatch actually tell you?
| Result | Next investigation |
|---|---|
| Claimed washer revenue above the modeled range | Check vend prices, settings, units and billing dates; examine whether larger machines run more often |
| Claimed revenue inside the range | The assumptions are compatible with the claim; continue the other revenue checks |
| Claimed revenue below the range | Check leaks, shared use, free cycles, refunds, machine settings and uneven use across capacities |
No row establishes deception. Even an accurate machine inventory does not validate the equal-turns assumption. A large washer can run much more or less often than a small washer, changing both weighted gallons and weighted vend price. Use actual cycle counts by model if they are available.
Which records make the inputs useful?
Water volume. Use original bills covering the same period as the revenue. Check gallons versus cubic feet, estimated reads, meter replacements and true-ups. A hundred cubic feet is approximately 748 gallons. Confirm the conversion printed by the utility rather than assuming that the number on a bill is gallons.
Non-machine use. Account for restrooms, mop sinks, cleaning, hose bibs, hot-water-system losses and softener regeneration. Identify other tenants or irrigation on the same service. If these uses cannot be isolated, widen the scenarios and label the limitation instead of forcing a close reconciliation.
Machine consumption. Record the model, programmed cycle and water settings, then obtain manufacturer documentation for that configuration. Defaults in this form are examples, not verified specifications. Replaced or out-of-service machines require a period-specific inventory. ENERGY STAR's commercial-washer guidance explains why efficiency matters, but an efficiency label cannot replace an installed model's specifications (Source: ENERGY STAR, Commercial Clothes Washers).
Prices and cycles. Use price histories for the period, including discounts, free washes and refunds. Count machines as whole units. The model assumes the same number of cycles per machine across capacity bands; if operating reports contradict that assumption, calculate each band's cycles and revenue separately.
Revenue boundary. Compare washer vend revenue only. Exclude dryers, vending and the labor/delivery component of wash-dry-fold. If service laundry uses the same machines, allocate its water and cycles separately or impute the equivalent washer vend amount. Do not compare the full service price per pound with a model that only prices washer cycles.
How should the checks be sequenced?
- Match the meter, service address and exact beginning and ending dates to the store records.
- Verify units and whether the readings are actual or estimated.
- Identify the machine mix and settings that operated during that period.
- Check for shared fixtures, unusual cleaning, promotions and leaks.
- Compare cycle and payment records where available, including coin-system audits.
- Reconcile the remaining difference with the seller and record what remains unresolved.
A closed-store meter observation can reveal unexplained consumption, but planned regeneration or shared service may also move the meter. Have qualified personnel isolate the cause. A physical inspection can identify a leak; this financial model cannot.
How should a buyer use the result in diligence?
Treat the output as one input to a six-source revenue reconciliation. Tax returns, bank deposits, payment settlements, machine records, attended collections and utility consumption have different limitations. Agreement is useful corroboration, not mathematical proof that each source is independent or complete.
Keep an assumptions sheet with the documents behind every input. If the seller supplies a summary without original statements, note that gap explicitly. Where results depend on unverified settings or cycle shares, show multiple scenarios. Do not label the most favorable scenario as verified earnings in a lender package.
An unresolved discrepancy can justify more diligence, a documented contingency or a revised underwriting assumption. It does not justify an accusation. Discuss material unresolved amounts with the buyer's accountant and lender before waiving protections.
How should a seller prepare?
Assemble original bills, equipment records, price changes and service reports before marketing. Explain a meter change or a retool by date so the buyer can compare the right periods. Retain the initial calculation and the corrected version when new evidence arrives.
A documented explanation is more useful than a promise that water always proves income. Avoid representations about hidden cash or a guaranteed valuation premium. See how buyers verify laundromat revenue for the rest of the preparation process.
What remains outside this model?
This tool does not verify a leak, detect fraud, predict demand, value the business, or decide lender eligibility. It does not model unequal cycle shares, usage changes within a year, a shared meter or the service-labor component of wash-dry-fold revenue. There is no published accuracy rate for these default scenarios. Request the missing operating evidence before treating the output as support for an offer.
The Next Step
Frequently Asked Questions
Why does this give a range instead of a number?
Because a single answer would be false precision. Per-cycle water use varies by model, capacity, and cycle selection; non-machine use varies; and leaks, boiler losses, promotions, and machine-mix changes all move the relationship. The output brackets the assumptions entered, not every possible outcome; it is not a statistical confidence interval.
What does a result outside the range mean?
A result outside the range is an unresolved difference under the entered assumptions. Check units, billing dates, actual settings, cycle mix, leaks, shared fixtures and free cycles before comparing with deposits and collection records. It does not by itself establish false reporting or unreported cash.
Where do I find gallons per cycle for my machines?
Manufacturer technical documentation, which Dexter and Continental Girbau both publish publicly, and distributor spec sheets for any installed model. The defaults here are illustrative, unverified inputs and should be replaced with figures for the actual models on the floor.
Does this prove revenue?
No. It supplies a scenario-based cross-check, not proof or disproof of a revenue claim. Unequal turns by capacity and errors in consumption assumptions can move actual results outside the model range. Reconcile original utility records with returns, deposits, payment records and observed collections.
How do I rule out a leak?
Read the meter with every machine off and the store closed, wait a measured interval, and read it again. If it moved, you have found a leak or a running fixture, and no conclusion about revenue can be drawn until it is fixed and a clean period is measured.
Sources
- Coin Laundry Association, Best Practices for Due Diligence in Laundromat Acquisitions — https://laundryassociation.org/membership-files/white-papers/Best%20Practices%20for%20Due%20Diligence%20in%20Laundromat%20Acquisitions.pdf
- Coin Laundry Association, 2024 Laundry Industry Survey — https://member.laundryassociation.org/hubfs/IndustrySurvey24.pdf
- ENERGY STAR, Commercial Clothes Washers — https://www.energystar.gov/products/commercial_clothes_washers
- Dexter Laundry, technical document library — https://dexter.com/support/technical-information/?industry=vended
- Continental Girbau, vended washers — https://continental-laundry.com/products/vended-laundry-washers/
This page is general information about laundromat transactions, not legal, tax, or investment advice, and not a guarantee of sale price, timing, or financing approval. Verify current rules with your own CPA, attorney, lender, and the relevant state or municipal agency before acting.