HVAC Condenser Cleaning Break-Even: About $38K Monthly Revenue

Fixed costs $7.1K/mo Overhead base

Contribution margin 91.7% After variable costs

Break-even revenue $7.7K/mo Revenue floor

Break-even timing Month 34 Model break-even

Break-even calculator

Use this calculator to test monthly revenue, direct cleaning costs, and fixed overhead against break-even.

Lean Base Full

Monthly revenue Revenue sets the pool that covers direct costs and fixed overhead. $ Low sales High sales Variable expenses These are direct costs like chemicals and vehicle fuel that rise with service volume. $ Light cost Heavy cost

Money available to cover fixed costs $64,944 $70,833 revenue - $5,889 variable expenses

Margin ratio

92%

Covers fixed costs

Yes

Fixed monthly costs This is the monthly overhead contribution margin must cover. $ Low overhead High overhead

Break-even chart Revenue Total costs

Which condenser cleaning expenses are fixed, variable, or step up at break-even?

Cost classification

Break-even gets unreliable when monthly overhead, job-level spend, and staffing jumps are blended together. Keep fixed costs stable, variable costs tied to revenue, and semi-fixed costs stepped up only when capacity actually changes.

Expense	Cost	Break-Even Treatment	Common Mistake
Office and Dispatch Center Rent	Fixed	Include $2,500 per month from Month 1 through Month 60.	Treating the lease as optional after signing.
CRM and Scheduling Software	Fixed	Include $800 per month as operating overhead, not a per-job charge.	Tying the full software bill to job count.
Vehicle Insurance	Fixed	Include $1,200 per month before route volume is fully built.	Ignoring insurance before trucks are fully booked.
General Liability and Workers Compensation Insurance	Fixed	Include $950 per month as required coverage overhead.	Leaving coverage out of the overhead base.
Cleaning Chemicals and Supplies	Variable	Model at 4.5% of first-year revenue; here’s the quick math: $232,000 × 4.5% = about $10,440.	Budgeting only the first supply order.
Vehicle Fuel and Maintenance	Variable	Model at 3.8% of first-year revenue, or about $8,816 on $232,000 of sales.	Missing deadhead travel between jobs.
Salaried Technicians and Managers	Semi-fixed	Use $288,000 in first-year payroll, then step up when route density supports more headcount.	Hiring ahead of confirmed route density.
Annual Marketing Budget	Semi-fixed	Use $45,000 in the first year, with spend increasing by budget step as acquisition improves.	Scaling ads before CAC improves from $85.

How does break-even change from lean to full route density in this HVAC condenser cleaning service?

Scenario table

Higher route density spreads labor, software, insurance, and marketing across more revenue, so the loss shrinks fast. In this model, lean stays underwater, base reaches break-even around Month 34, and full turns profitable.

Planning assumptions only; actual break-even will move with route density, pricing, technician capacity, and marketing efficiency.

Scenario	Monthly Revenue	Variable Costs	Fixed Costs	CM Ratio	Operating Profit	Break-Even Signal
Lean route-density case	$19.3k	$5.3k	$34.8k	72.7%	-$20.8k	Still $20.8k short of break-even each month.
Base route-density case	$70.8k	$15.7k	$61.1k	77.8%	-$5.9k	Near break-even; Month 34 is the model signal.
Full route-density case	$120.8k	$28.0k	$84.1k	76.8%	$8.8k	Dense routes and add-ons create an $8.8k monthly cushion.

What pushes this HVAC cleaning plan past break-even?

Stress test

The plan breaks fast if bookings lag or fuel and payroll rise. Base break-even is about $38,000 a month, and Year 1 revenue of about $19,300 leaves roughly an $18,600 gap before any extra pressure.

Stress Case	Changed Assumption	Break-Even Revenue	Revenue Gap	Risk Signal
Current plan	No change; base model holds $34,800 of monthly overhead and 91.7% contribution margin.	$38,000	$0 gap	Base case only works if recurring revenue keeps building.
Revenue shortfall	Monthly revenue stays near the Year 1 run-rate of $19,300 instead of the break-even level.	$38,000	$18,600 gap	Bookings need to nearly double just to cover fixed costs.
Fixed-cost pressure	Monthly overhead rises by $1,000, from about $34,800 to $35,800.	$39,100	$19,800 gap	Each extra $1,000 of overhead needs about $1,090 more revenue.
Margin pressure	Variable costs rise 1 point of revenue, from 8.3% to 9.3%.	$38,400	$19,100 gap	A 1-point margin drop adds about $400 to break-even.
Combined pressure	Bookings stay at $19,300 a month, overhead adds $1,000, and variable costs rise 1 point.	$39,500	$20,200 gap	Slow sales, higher fuel, and payroll commit before demand.

Can you prove recurring demand, route density, and price fit before you buy the fleet and lock in payroll?

Founder checklist

Before you buy trucks and lock in payroll, prove recurring maintenance demand, dense zip-code routes, and price fit. The model reaches break-even in Month 34, but cash still bottoms at $107K in Month 53, so the cushion has to come first.

1Recurring demand$85K fleet

Do not buy the $85,000 service vehicle fleet until at least 65% of first-year bookings look like monthly maintenance, because one-time work will not support the asset.

2Price fit$49.99-$149.99

Test whether customers accept the Year 1 price ladder of $49.99, $89.99, $149.99, and $39.99 add-ons, and confirm chemicals plus fuel take only 8.3%, leaving 91.7% before payroll and overhead.

3Zip density2 techs

Map enough jobs by zip code to keep the opening crew at 2.0 service technician FTE, because thin routes raise drive time and force hires before the routes pay back.

4Fixed load$4.6K-$7.1K/mo

Keep the $2,500 office and dispatch rent optional until volume needs it, because the fixed load runs about $4.6K a month without rent and $7.1K with it, and that already includes $1,200 vehicle insurance plus $950 liability and workers comp.

5Cash cushion$107K floor

Hold a reserve above the $107K minimum cash floor, because cash bottoms in Month 53 and EBITDA does not turn positive until Year 4.

6CAC gate$85 CAC

Hold the $20,000 launch campaign until CAC stays at or below $85 and repeat bookings are visible, or paid acquisition will outrun the model.