HVAC Customer Acquisition Cost Calculator
What Does a New Customer Actually Cost You?
Not a lead. Not a call. A person who had never used you and now has a job on your board. Marketing plus the sales time it took to close them, divided by how many you won. Then whether the first job paid for it.
Example numbers loaded. Replace with yours.
Fees plus ad spend, all channels.
CSR and comfort advisor time spent on new-customer calls and estimates. Estimate if you must.
First-time customers with a completed job. Repeat customers do not count.
What a new customer’s first job was worth, on average.
After labor, parts, and equipment. Before overhead.
Tune-ups, repairs, and the eventual replacement. Rough is fine.
Customer acquisition cost
How to read it.
CAC
Marketing plus sales cost divided by new customers. Not leads, not calls, not repeat customers. The word “new” is doing all the work in that sentence.
First job covers CAC
Gross profit on the first job as a share of CAC. Above 100% means the customer paid for themselves on day one. Below means you are betting on them coming back, so you had better have a plan to make sure they do.
Lifetime to CAC
Rough lifetime gross profit divided by CAC. A common rule is to want at least 3x here. Below that, acquisition is eating the relationship.
What this calculator leaves out.
On purpose, so you know where the number is soft.
- Which channel
- One blended CAC hides the fact that referrals cost nothing and cold paid search costs the most. Split it if your intake tags the source.
- Sales cost is a guess
- Most shops do not track CSR and advisor time by new versus repeat. Estimate it, and know the CAC is soft by that much.
- Lifetime is rough
- The repeat-jobs input is a placeholder. The lifetime value calculator does this properly.
- Overhead
- Gross margin only. Trucks, office, and insurance are not in here.
The cheapest customer is the one you already have
Owners spend hard on new customers and almost nothing on keeping them. Yet the second, third, and fourth jobs from the same household are where the margin lives. On every account we run, follow-up and maintenance-agreement work gets budget before more ads do.
Henry “Hank Hugh” Hernandez, CEO, HVAC Digital Marketing
HVAC Growth Audit. Free.
Want us to run it on your real records?
A calculator works on what you type in. The Growth Audit works on what your call log and job software actually say, by channel, and shows you which of the seven steps between a search and a booked job is leaking.
- Cost per booked job, by channel, from your own numbers
- The step that is leaking, and how many jobs it costs you
- What it takes to move it, and the next step if you want one
Start here. 2 minutes.
3 questions to start. Your answers stay between us.
What a customer should cost an HVAC company.
There is no universal right CAC. A customer acquired for $300 is expensive if she is a one-time $180 tune-up and cheap if she signs a maintenance agreement and replaces a system in year four. That is why this calculator sits next to the lifetime value calculator — CAC is only meaningful as a fraction of what the customer is worth.
Split it by job type before you react to it. Blended CAC hides the fact that acquiring a replacement customer legitimately costs several times what a service call does, and is worth many times more. If you can label each new customer in your job software as service, replacement, or agreement, run this page three times and set a ceiling for each.
Two levers cut CAC without touching the ad budget. The first is exclusivity: shared leads make you pay to race four competitors for the same homeowner, which is why exclusive lead generation for HVAC produces a lower real CAC even at a higher price per lead. The second is speed: a lead answered in minutes closes at a completely different rate than one returned tomorrow, so speed-to-lead automation lowers CAC by rescuing money you already spent.
Say you spend $8,000 in a month and win 32 new customers — a $250 CAC. Whether that is good news depends entirely on the mix inside the 32. Ten agreements in the batch and it is excellent. Thirty-two one-time tune-ups and it is a warning.
Questions owners ask.
What is a good CAC for an HVAC company?
Lower than the gross profit on the first job, ideally, and never more than a third of what the customer is worth over their lifetime. Both of those depend on your ticket, your margin, and your retention, so a single industry number would mislead you. Run yours.
Should referrals count?
Count them as new customers, but track them separately. They are the lowest-cost customers you have, and knowing how many you get tells you how strong the review and follow-up machine is.
Is CAC the same as cost per booked job?
No. Cost per booked job counts every job from marketing, new or repeat. CAC counts only first-time customers and adds the sales cost. Both matter. CAC tells you whether growth is affordable.
What does it cost?
We start from your number, not a package. Tell me what you want to invest, and I will walk you through what it buys and what it does not. If I can help, I will tell you. If I cannot, I will tell you that too, straight. Our fee is 1 flat monthly number in your proposal, always separate from ad spend so you can see what you are paying for.
Do you save what I type in here?
No. The math runs in your browser and nothing is sent anywhere unless you tap the text button, which opens a message you can edit or delete before sending.
Can I just text instead?
Yes. Text the question and I will answer it. No call, no charge. The call exists for the questions that need your numbers in front of both of us.
Now run it by channel, on your records.
The calculator gives you one blended number. The audit splits it by source, so you can see which channel is winning customers you can afford.
