Your HVAC Business Health Score: What 85% of Owners Don't Know About Their Own Numbers
Here's a test. Answer these five questions about your business right now, without pulling any reports:
What is your current gross margin percentage? What is your close rate on presented service opportunities? What is your average residential ticket size this quarter? What percentage of your customers from two years ago have used you again? What is your customer acquisition cost by lead source?
If you can't answer at least four of those five questions with a specific number — not a guess, a number — your business doesn't have a health problem. It has a visibility problem. And a visibility problem always becomes a health problem, because you can't fix what you can't see.
This article introduces the MarginPlug Business Health Score framework: five diagnostic pillars, scored 0–20 each, totaling 100. By the end you'll know how to calculate yours — and what it means.
What a Business Health Score Actually Measures
A health score isn't a vanity metric. It's a diagnostic instrument — the same way a blood panel doesn't tell you how tall you are, it tells you what's wrong and how urgently. The MarginPlug score measures the five variables that together determine whether a business is compounding its profits or quietly bleeding them.
Those five pillars are Demand, Sales, Delivery, Economics, and Flywheel. Each one can score between 0 and 20. A business scoring 80+ is operating with genuine financial discipline. A business scoring below 50 almost certainly has one catastrophic leak that, if fixed, would materially change its profitability within 90 days.
"I thought we were doing fine because revenue kept growing. The diagnostic showed a 44. I had no idea how much was leaking out the back end." — HVAC owner, 7 trucks, $2.4M revenue
The Five Pillars — And How to Score Each One
For each pillar, identify where your current numbers land and assign the corresponding point value. Be honest — this is a diagnostic, not a report card you're showing anyone.
This pillar measures whether your marketing spend is generating profitable customers — not just leads. The key metric is Customer Acquisition Cost (CAC) relative to the gross profit a customer generates on their first job.
A healthy CAC for residential HVAC service is typically $80–$160. Above $220, most service-only calls become cash-flow neutral or negative before you factor in a second visit. Calculate yours: total marketing spend ÷ total new customers acquired in the same period.
Two numbers define your Sales pillar score: close rate and average ticket size. Close rate measures how often a presented opportunity converts to a paid job. Average ticket measures how much value is captured per conversion.
Industry benchmark for residential service close rate is 65–75%. Top performers run 82–88%. Average residential ticket benchmark is $480–$620 for companies in the $1M–$3M range. If you're closing well but at low tickets, or closing at high tickets with a poor close rate, both scenarios suppress your Sales score.
Get your full health score in 8 minutes — with benchmarks attached.
The MarginPlug diagnostic scores all five pillars automatically, benchmarks them against companies at your revenue level, and tells you which pillar to fix first. You don't need to calculate anything manually.
Get my health score free Free during beta · 8 minutes · No credit cardDelivery efficiency is measured through two primary signals: Revenue Per Truck Per Day (RPTD) and callback rate. RPTD tells you how productively your fleet is working. Callback rate tells you how much of that productivity is being undone by rework.
Benchmark RPTD for residential service-focused HVAC companies in the $1M–$3M range is $1,800–$2,800 per truck per day. Top performers exceed $3,200. Callback rate benchmark is under 3%. Every callback above that threshold costs you a fully loaded tech visit with zero revenue attached.
The Economics pillar captures the structural integrity of your margin — gross margin %, labor burden accuracy, and pricing discipline. This is the pillar most HVAC owners score worst on, not because their business is poorly run, but because they're calculating it incorrectly.
If your gross margin calculation uses payroll figures instead of fully loaded labor cost, your reported margin is likely 8–15 points higher than your actual margin. The Economics score penalizes estimated or unverified numbers — you need the real figures, calculated correctly, to score above a 7 here. See our article on true labor burden calculation for the exact method.
The Flywheel pillar measures your repeat customer rate and maintenance agreement penetration — the two metrics that determine whether your business builds compounding value over time or requires constant new-customer acquisition to maintain revenue.
A business with a strong flywheel effectively reduces its CAC over time as a growing percentage of revenue comes from customers who cost near-zero to retain. A business with a weak flywheel is on an acquisition treadmill — spending full CAC on every job, every year, just to stay flat. Repeat customer rate benchmark for healthy HVAC companies is 28–38%. Maintenance agreement penetration benchmark is 20–35% of active customers.
Add Up Your Score
Total your five pillar scores. Here's what the range means for your business right now:
| Total score | What it means | Typical profile | Priority action |
|---|---|---|---|
| 0–30 | Critical — multiple structural leaks | Owner-operator, under $1M, gut-feel decisions throughout | Start with Economics pillar — fix the foundation first |
| 31–45 | At risk — one dominant leak suppressing everything | $1M–$2.5M, growing but margin not keeping pace | Find the lowest-scoring pillar — that's your 90-day focus |
| 46–59 | Average — functioning but leaving real money behind | $1.5M–$3M, decent operation, 2–3 fixable leaks remaining | Fix Delivery or Sales pillar for fastest margin recovery |
| 60–74 | Healthy — above average, one optimization remaining | $2M–$5M, systems in place, owner thinking strategically | Focus on Flywheel — reduce CAC dependency |
| 75–100 | Strong — compounding profitably, ready to scale | $3M+, documented processes, data-driven decisions | Maintain and monitor — protect the score as you grow |
What to Do With Your Score
The score itself isn't the goal. The goal is knowing which number to move first.
Most owners who do this exercise find they score reasonably well on two or three pillars and poorly on one or two. The lowest-scoring pillar is almost always where the largest recoverable profit is hiding. You don't need to fix everything — you need to fix the right thing first.
If your lowest score is Demand
You're paying too much to acquire customers, or at least one lead channel is cash-flow negative. The fix isn't more marketing spend — it's CAC visibility by channel and cutting or repositioning the unprofitable ones. Start by reading how much HVAC companies should spend to acquire a customer.
If your lowest score is Sales
Your techs are running calls but either not closing enough of them or not capturing full ticket value. This is almost always a process and presentation problem, not a people problem. The fix is a structured options presentation and a follow-up process for unconverted opportunities.
If your lowest score is Delivery
Your trucks aren't generating enough revenue per day, or your callbacks are eating your margin in rework cost. Start with the Revenue Per Truck Per Day framework — it catches dispatch, preparation, and job mix problems simultaneously.
If your lowest score is Economics
Your margin structure is wrong at the foundation. Pricing, labor burden, or both. This is the most important pillar to fix because every other metric you calculate is built on top of it. Until your economics are sound, your close rate and RPTD benchmarks are measuring against a distorted baseline.
If your lowest score is Flywheel
You're on the acquisition treadmill — constantly paying full CAC for revenue that should be coming back for near-free. The fastest fix is a systematic maintenance agreement offer process embedded in every service call, not a separate sales push.
Don't estimate your score. Get the real one.
The manual scoring above gives you a directional answer. The MarginPlug diagnostic gives you a precise one — benchmarked against companies at your exact revenue level, with your weakest pillar identified and a prescriptive fix attached. Takes 8 minutes.
Run the full diagnostic free Free during beta · No credit card · Results in minutes