A commercial HVAC bookkeeper records every bill, payment and payroll run at a contractor that services and installs systems in offices, schools and stores. They bill big jobs in monthly pay apps, track retainage and lien waivers, and collect from customers who pay on terms. On public jobs with prevailing wage rules, they set payroll at those rates.
By the HireBus team · Updated · Pay data: BLS, May 2025
Median pay, HVAC and plumbing contractors · BLS, May 2025
A dedicated Bookkeeper with a focus on Commercial HVAC operations who processes financial data accurately, reconciles accounts, and manages accounts payable/receivable to ensure streamlined financial operations. This role plays a critical part in maintaining fiscal integrity and supporting the overall operational success of the company.
2. Essential Duties and Responsibilities
Process financial transactions, invoices, and expense reports accurately and in a timely manner.
Reconcile bank statements and resolve discrepancies to maintain accurate financial records.
Manage accounts payable and receivable, ensuring that all vendor and client transactions are recorded correctly.
Assist with month-end, quarter-end, and year-end closing processes by preparing necessary reports and documentation.
3. Key Tasks / Daily Activities
Enter and update financial data using accounting software and spreadsheets on a daily basis.
Review and reconcile daily transactions and bank deposits.
Process vendor invoices and customer payments, addressing discrepancies as they arise.
Communicate with vendors and internal teams to resolve payment issues and maintain accurate records.
4. Key Performance Indicators (KPIs)
Transaction processing accuracy: Achieve an error rate of less than 2%.
Timely reconciliation: Complete all monthly reconciliations within 5 business days.
Accounts payable turnaround time: Ensure 95% of invoices are processed within agreed payment terms.
Customer credit collection rate: Maintain a collection rate of 98% on outstanding receivables.
5. Required Qualifications and Skills
Bachelor’s degree in Accounting, Finance, or a related field or equivalent experience.
At least 2 years of bookkeeping experience, preferably in an HVAC or related service industry.
Proficiency with accounting software (e.g., QuickBooks, SAP) and Microsoft Excel.
Strong attention to detail, analytical skills, and ability to manage multiple tasks simultaneously.
6. Preferred Experience
Experience working in a commercial HVAC or home services environment.
Familiarity with industry-specific invoicing, billing practices, and vendor management.
Demonstrated ability to improve processes in a financial setting.
Exposure to regulatory compliance and financial auditing processes within the industry.
7. Physical Requirements
Ability to lift up to 10 pounds occasionally for document handling.
Extended periods of sitting and computer work in an office setting.
Occasional walking between departments and teams.
Comfortable working in a standard office environment.
8. Work Environment and Schedule
Standard office hours Monday through Friday with minimal overtime requirements.
Flexibility to adjust hours during peak financial close periods.
Primarily remote or on-site work as required by company policies.
Occasional collaboration meetings that may require brief travel between locations.
9. Compensation and Benefits
Annual salary range: $40,000 - $55,000 USD depending on experience and qualifications.
Eligibility for annual performance-based bonuses.
Comprehensive health, dental, and vision insurance.
Participation in the company 401(k) plan with matching contributions.
10. Company Culture and Overview
At [INSERT COMPANY NAME HERE], we pride ourselves on building a collaborative, growth-oriented environment where every employee is empowered to contribute. We value integrity, continuous learning, and proactive problem-solving. Join us to be part of a team that is committed to excellence and customer satisfaction, while offering ample opportunities for professional growth and development.
11. How to Apply
If you meet the above criteria and want to be part of a growth-oriented company focused on customer satisfaction, please send your resume to [INSERT EMAIL HERE] or apply online at [INSERT WEBSITE LINK HERE].
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Service calls still get invoiced the usual way. The big change is construction-style work: long jobs billed in stages, part of every payment withheld as retainage, and paperwork that has to travel with each pay request.
Big jobs are billed in monthly pay apps
A chiller swap or a new school wing isn't billed once at the end. Each billing period, the bookkeeper prepares a pay application, often on AIA forms G702 and G703. It shows work done and materials stored to date, change orders, past payments and retainage, line by line against a schedule of values. The numbers come from the job cost ledger and the project manager's progress count, and the pay app has to beat the customer's cutoff date. Source: AIA Contract Documents: Summary of G702-1992, Application and Certificate for Payment.
Retainage is earned but not paid yet
Retainage is the slice of each progress payment the customer holds until the point the contract names, often the end of the job. It is still your money, so the bookkeeper tracks it as its own receivable, job by job, and bills it the day the contract allows. If you keep retainage from your own subs, that side needs its own list too. Otherwise old retainage gets forgotten once the crew moves on.
Lien waivers go out with the checks
General contractors and owners often hold each check until they get your signed lien waiver. Some want waivers from your suppliers too. States can set the wording. California, for example, prints the progress payment waiver form in its civil code, and a waiver that doesn't follow it can be void. The bookkeeper sends the right form with each pay app and logs every waiver signed and received. Source: California Civil Code section 8132: Conditional waiver and release on progress payment.
Prevailing wage fringes change the payroll math
On Davis-Bacon jobs, each trade's rate has a base wage and a fringe amount. The Labor Department lets you meet it with cash, payments into real benefit plans, or both. Fringes are owed for every hour, overtime included, but the fringe can be left out of the half-time overtime premium. State prevailing wage laws may set their own rules. The bookkeeper sets payroll so each job's hours carry the right base and fringe, and the weekly certified payroll matches it. Source: U.S. Department of Labor: Davis-Bacon and Related Acts compliance principles.
Commercial customers pay on terms
Property managers and school districts rarely pay on the spot. They open an account, issue a purchase order, and pay on net terms after their own approval steps. The bookkeeper sets up new accounts with the credit checks the owner wants, works the aging report each week, and calls about an invoice before it goes past due, not a month after.
How much commercial HVAC bookkeepers make
The closest BLS group for commercial HVAC bookkeepers is bookkeeping, accounting, and auditing clerks. Bookkeeping, accounting, and auditing clerks who work for plumbing, heating, and air-conditioning contractors earned a median of $26.25 an hour ($54,610 a year) in May 2025, according to the Bureau of Labor Statistics. That’s above the $50,670 median for bookkeeping, accounting, and auditing clerks in all industries. About 20,690 of the 1,373,680 bookkeeping, accounting, and auditing clerks in that survey work for HVAC and plumbing contractors.
Paid by the hour or on salary. A year-end bonus, where offered, tends to reward clean month-end closes or steady collections.
HVAC and plumbing contractors
$54,610$54,610 median Middle half $45,270–$63,180 10th–90th $36,410–$76,160
All industries
$50,670$50,670 median Middle half $43,520–$61,470 10th–90th $36,000–$74,550
$30k$40k$50k$60k$70k$80k$90k
10th–90th percentileMiddle halfMedianAnnual pay, May 2025. Source: BLS Occupational Employment and Wage Statistics.
Annual pay by percentile
Group
10th
25th
Median
75th
90th
HVAC and plumbing contractors
$36,410
$45,270
$54,610
$63,180
$76,160
All industries
$36,000
$43,520
$50,670
$61,470
$74,550
BLS reports HVAC and plumbing contractors together, residential and commercial. Post a real range for your market in the ad.
The pay line in the template above is an example from our Role Blueprint. Set yours from these figures and what local companies pay.
Skills to hire for, and what you can teach
Hire for these
Progress billing or construction accounting experience
Monthly reconciliation of bank, card and vendor accounts
Firm, friendly follow-up on past-due accounts
Payroll accuracy down to the job and trade code
Noticing when billing runs ahead of the work
Teach these on the job
Your pay app format and each GC's cutoff dates
Certified payroll forms and wage classifications
Your job cost codes and work-in-progress report
Lien waiver forms for the states you work in
Service agreement billing cycles
Union fringe reports, if you're a union shop
Expect construction accounting software with job costing, such as Sage 100 Contractor, Foundation or QuickBooks Enterprise, often linked to field service software for the service side. Many GCs collect pay apps and waivers through their own online portals. A candidate who has built pay apps in one of these systems will get up to speed faster.
Commercial HVAC bookkeeper interview questions
They have their own page: 6 questions that test this job, what strong and weak answers sound like, and a work exercise to run with your finalists.
Set these targets with your CFO from your own history. Review them monthly, and report retainage on its own line so it doesn't drag down your collection numbers.
Transaction processing accuracy
Check a random batch of entries every month, including bills, deposits and pay app lines. Count the ones with the wrong amount, job, cost code or account.
Timely reconciliation
How many business days pass after month-end before every bank, card, loan and retainage account is reconciled and signed off. Write down which account caused any delay.
Accounts payable turnaround time
Share of supplier and subcontractor bills entered, approved and paid within their terms. Track bills held for a missing lien waiver on their own line, so the delay has a reason.
Customer credit collection rate
Cash collected against receivables that are due, from your aging report each month. Leave out retainage that isn't billable yet, and flag accounts past due by more than one billing cycle.
Career path
Accounts payable or billing clerkCodes supplier bills, posts customer payments and learns job costing.
BookkeeperBills pay apps, tracks retainage and runs the month-end close.
Project accountantOwns billing and cost reports for the largest construction jobs.
ControllerOwns the monthly close and job profit reports, and meets with the owner and bank.
They record and reconcile the company's money. On the service side, that means invoicing work orders, posting payments and paying suppliers. On the construction side, it means monthly pay applications, retainage, lien waivers and job cost reports. On public jobs they often help with certified payroll. Most also prepare the month-end reports that the CFO or outside CPA reviews.
How much does a commercial HVAC bookkeeper make?
Bookkeeping, accounting, and auditing clerks who work for plumbing, heating, and air-conditioning contractors earned a median of $26.25 an hour ($54,610 a year) in May 2025, according to the Bureau of Labor Statistics. The middle half earned between $45,270 and $63,180 a year. Pay also depends on your local market, experience and overtime.
What does the bookkeeper need from project managers each month?
A progress count for every line on each schedule of values, the change orders the customer has signed, and invoices for any equipment stored on site or in your warehouse. They also need each subcontractor's pay app and lien waiver before paying them. Set a fixed day each month for these, a few days before the customer's cutoff, so pay apps don't go out late or padded with guesses.
Can one bookkeeper handle both service and project billing?
At many contractors this size, yes, at first. The trouble is timing: service invoices go out every day, while pay apps, waivers and certified payrolls pile up at the same points each month. When pay apps start going out late or service invoices sit unbilled, split the work. A billing clerk takes service work orders, and the bookkeeper keeps projects and the close.
Should a commercial HVAC bookkeeper know construction accounting?
For the construction side, yes, or be ready to learn it fast. Someone who has only billed service calls may never have built a pay app, tracked retainage or matched lien waivers to payments. Bookkeepers from general, electrical or plumbing contractors usually bring those habits. To test it, hand finalists a short schedule of values and ask them to bill one month.
What goes in a commercial HVAC bookkeeper job ad?
Tell candidates if the job builds pay applications, handles certified payroll, or runs payroll at all. Name your accounting and job cost software. If you're a union shop, mention the monthly fringe reports. Give a rough sense of how much public or school work you do, and who reviews job profit each month.
