Heat Exchanger Cleaning Service Break-Even Analysis: $94K/Month

Fixed costs $66.5K/mo Launch overhead base

Contribution margin 81% After variable costs

Break-even revenue $82.1K/mo Monthly revenue target

Break-even timing Month 10 Model break-even point

Break-even calculator

Use this calculator to test whether monthly revenue can cover direct variable costs and the fixed monthly cost base for a heat exchanger cleaning service.

Lean Base Full

Monthly revenue Revenue is the pool that pays direct costs first, then fixed overhead. $ Tighter run Growth mode Variable expenses These are direct costs tied to each job, like consumables, disposal, and field logistics. $ Lower direct cost Higher direct cost

Money available to cover fixed costs $58,320 $72,000 revenue - $13,680 variable expenses

Margin ratio

81%

Covers fixed costs

$8,130 short

Fixed monthly costs This is the monthly overhead that contribution margin has to cover. $ Lean overhead Heavy overhead

Break-even chart Revenue Total costs

Which expenses are fixed and which move with sales in a heat exchanger cleaning service?

Cost classification

Break-even gets unreliable when fixed overhead is treated like job-level spend, or variable field costs are ignored. Here, the model reaches break-even in Month 10, so clean cost behavior matters early.

Expense	Cost	Break-Even Treatment	Common Mistake
Regional Warehouse and Office Rent	Fixed	$12,000/month base overhead from Month 1 through Month 60.	Don’t spread it only across booked jobs.
Industrial Insurance and Liability	Fixed	$4,500/month coverage burden needed to operate industrial sites.	Don’t treat it as optional after launch.
Cleaning Consumables and Waste Disposal	Variable	11% of first-year revenue, or about $95,040 on $864,000.	Don’t ignore waste handling.
Field Travel and Technician Logistics	Variable	8% of first-year revenue, or about $69,120 on $864,000.	Don’t price remote sites like local routes.
Senior Field Technician Wages	Semi-fixed	Salaried crew capacity steps up from 2.0 FTEs in the first year to 10.0 FTEs by the fifth year.	Don’t hire ahead of signed work.
Fleet Maintenance and Fuel	Semi-variable	$3,200/month base burden, with route exposure as job volume and distance rise.	Don’t bury fuel shocks.
CRM and Scheduling Software	Fixed	$1,800/month dispatch support across the planning period.	Don’t count it per job.
Safety Compliance and OSHA Training	Fixed	$2,500/month required safety burden from Month 1 through Month 60.	Don’t underbudget compliance before field work scales.

How do lean, base, and full utilization change break-even for a heat exchanger cleaning service?

Scenario table

Break-even shifts with route density because revenue, travel, and crew load do not move at the same pace. Lean months miss fixed overhead, the base case sits at break-even, and full utilization adds a small monthly cushion.

Planning assumptions only; actual results will move with route density, site mix, and field travel.

Scenario	Monthly Revenue	Variable Costs	Fixed Costs	CM Ratio	Operating Profit	Break-Even Signal
Lean route-build scenario	$72,000	$13,680	$76,450	81%	-$18,130	Still short of fixed overhead by about $18.1k a month.
Base recurring-route scenario	$94,400	$17,936	$76,464	81%	$0	Fixed overhead is covered, so this is the break-even line.
Full utilization scenario	$158,400	$28,512	$109,800	82%	$20,088	Higher route density creates about a $20.1k monthly cushion.

What pushes this heat exchanger cleaning plan off break-even?

Stress test

The base plan clears break-even at about $94,400 a month, but the cushion is thin. A 10% demand drop, a 10% overhead jump, or a small margin squeeze can turn that into a real monthly gap fast.

Stress Case	Changed Assumption	Break-Even Revenue	Revenue Gap	Risk Signal
Current plan	No change.	$94,400	$0 gap	This is the floor, so any slip starts eating cash.
Revenue shortfall	Revenue falls 10% to about $85,000 a month.	$94,400	$7,600 gap	Fewer shutdown jobs or slower routes cut straight into coverage.
Fixed-cost pressure	Fixed overhead rises 10% to about $84,100 a month.	$103,800	$9,400 gap	Rent, insurance, fleet, and support spend leave less room.
Margin pressure	Variable expense rises from 19% to 23%; margin drops to 77%.	$99,300	$4,900 gap	Longer routes, overtime, rework, and consumables inflation lift the floor.
Combined pressure	Revenue drops to about $85,000, margin falls to 77%, and overhead rises to about $84,100.	$109,200	$18,600 gap	This mix can push the plan well past break-even.

What should you verify before you buy the fleet and hire the first field crew for heat exchanger cleaning?

Founder checklist

Break-even lands in Month 10, so this is a demand-and-cash test, not a build-first bet. Before you commit, prove the pipeline, crew, and cash buffer can carry the $25.2K monthly overhead and the $237K cash trough.

1Signed demand$94.4K/mo

Verify signed or late-stage contracts can support roughly $94.4K a month in revenue, because at the Year 1 weighted price of $7.2K per monthly customer that means about 14 average monthly service contracts.

2Fixed load$25.2K/mo

Lock the warehouse, office, insurance, fleet, software, training, and utilities only if you can carry the $25.2K monthly fixed cost from day one, since rent is $12K and insurance is $4.5K.

3Margin check81%

Check that Year 1 consumables stay near 11.0% and field travel near 8.0%, leaving about 81% of revenue before payroll and overhead; if the job mix slides toward lower tiers, that cushion shrinks.

4Crew ramp2.0 FTE

Hold the field team at the Year 1 plan of 2.0 senior technicians and do not add more until utilization supports the next payroll step, because the sales and admin base is already set.

5Cash floor$237K

Keep at least the $237K minimum cash reserve through Month 18, because fleet, tooling, and hiring will pull cash down before EBITDA turns positive.

6Launch stack$332K

Inspect the $332K startup equipment package and confirm the hydro-blasting units, ultrasonic systems, diagnostic tools, mobile vehicles, and safety training are ready before the first dispatch, so launch capex stays separate from monthly break-even.