HVAC finance: installs, service plans and seasonal cash in one set of books
Updated 16 October 2026
A heating, ventilation and air conditioning (HVAC) company runs two lines of business at once. Installations are large, material-heavy jobs costed one at a time. Service and maintenance are smaller, steadier visits, often sold as prepaid plans. On top of those two lines sit equipment and parts stock, customer financing on large installs, and demand that peaks in summer and winter. This page covers how the books keep each part visible, so the owner can manage each on its own numbers.
Two lines of business under one name
An install is a project. Equipment and materials make up most of its cost, its margin depends on the bid and on capturing every cost against the job, and its ticket runs to thousands of dollars. A service call is short, uses less material and repeats. Read as one combined profit and loss, the two lines hide each other. The books separate them by class or department, so each line has its own revenue, direct cost and margin.
Service Experts' 2026 Franchise Disclosure Document (FDD), the disclosure a franchisor hands a prospective franchisee, reports on 48 company-owned outlets averaging $6,881,668 of sales. The Service Experts average HVAC replacement ticket is $14,224. Each Service Experts replacement is a project of that size, with its own equipment, labor and permit costs, sitting in the same books as service visits that bill a small fraction of it. Tracking replacements by class keeps the $14,224 jobs on their own margin line.
Margin by line
Installs earn a project margin. Service and maintenance usually earn a higher margin per dollar and build the repeat base that buyers pay for when the company is sold. A blended margin can hold steady while one line slips and the other carries it. Separate margins show which line moved.
A company sells $1,800,000 of installs at a 30% margin and $1,200,000 of service at 55%. Gross profit is $540,000 and $660,000, a 40% blended margin. The next year install margin falls to 24%, so install gross profit drops to $432,000 and the blended margin reads 36.4%. The owner who sees only the blended figure knows margin fell 3.6 points. The owner with two lines sees that installs lost $108,000 and service held. The figures are an illustration.
Prepaid maintenance plans
When a customer pays for a yearly or seasonal plan up front, the company has received cash for visits it has not yet made. The books record that payment as deferred revenue, a liability, and move it to revenue as each visit is completed over the plan's term. Recording the whole payment as income on the day it arrives overstates revenue in the month it is collected and hides the service still owed. A plan book recorded this way also smooths the seasonal swing and supports the company's value at sale. Averan's recurring revenue page covers plan economics in more detail.
A company sells 600 plans at $240 each in April, for two visits a year. The $144,000 arrives in April and is recorded as deferred revenue. After the spring visits, $72,000 moves to revenue and $72,000 stays on the balance sheet as service still owed. A company that booked all $144,000 as April income would show a high April and then fund the autumn visits with no revenue against them. The figures are an illustration.
Seasons and cash
Summer and winter bring the peaks, and spring and autumn bring the troughs. The risk lies in treating a peak month's cash as the normal rate. A rolling 13-week cash forecast carries the summer's cash into the slow autumn, and the plan book's prepaid visits help fill the quiet weeks. Fixed charges keep falling due in the troughs at the same amount. Averan's cash flow page sets out the forecast.
Aire Serv's lowest-selling tenth of businesses bills $64,112 a year and owes $72,082 in brand charges: a $20,800 license minimum, 2% to the brand fund and a $50,000 required local marketing spend. The Aire Serv page puts that at 112.4% of revenue. An Aire Serv owner at that level pays the same minimums in a slow April as in a busy July, so each one goes into the forecast as a fixed line.
Stock, warranties and customer financing
An HVAC company holds equipment, parts and stock on each truck. That stock ties up working capital and brings carrying cost, shrinkage and warranty tracking with it. The books count it at cost, set a stock level for each truck and track warranty claims owed back from manufacturers. Large installs are often sold with third-party customer financing. The lender's fee, the date the lender pays and the way the sale is recorded all need handling in the books, so the install margin is shown after the financing fee.
Service Experts reports that a leased replacement averages $15,190 against $13,406 for a job paid directly, $1,784 or 13% more, and that leased jobs make up 41% of transactions. In books built on the Service Experts pattern, a leased sale is recorded at its full price, any financing fee is booked as a cost of that sale, and the cash is placed at the date the financing company pays.
Labor and technician cost
Labor is the largest cost an HVAC owner controls. Technicians may be paid hourly, a flat rate per job, or a base with sales incentives, and each model changes cost and behavior. The figure that matters is the fully loaded cost of a technician: wages, payroll taxes and benefits, the truck and its stock, tools, training and unbilled time. Against that sits the share of paid hours billed to customers. A technician with a low wage and a low billed share can cost more per billed hour than a higher-paid technician with a full schedule. Averan's technician productivity page covers the measures.
Service Experts splits its outlets by whether the same general manager stayed for 24 months, which 15 of 48 did. At those 15 Service Experts outlets labor costs 28% of revenue against 31% at the rest, and equipment and parts cost 22% against 25%. Gross profit is 41.8% against 35.7%. The Service Experts figures show the labor line as a management result as well as a wage rate.
Five figures to track and the systems behind them
- Plan count and renewal rate, which measure the repeat base.
- Install backlog, the booked install work not yet done.
- Install and service mix, which drives margin and how predictable revenue is.
- Revenue per technician, the main labor measure.
- Average ticket, read separately for installs and service calls.
Field service platforms such as ServiceTitan or Housecall Pro run dispatch and invoicing. The finance work connects them to QuickBooks, so install job costs, service revenue, deferred plan revenue and stock each land in the right account, with class or department tracking to separate install from service. Averan's team includes Certified QuickBooks ProAdvisors who set up that connection.
One Hour Heating & Air Conditioning ranks its territories by sales. The top quarter of One Hour territories averages $3,062,355 and the bottom quarter $139,724, which is 21.9 times apart. A One Hour owner with territories in both groups reads the five figures territory by territory to find where the gap sits.
What this means for an HVAC owner
Installs and service run on different margins and are tracked as separate lines. Prepaid plans are deferred revenue and move to revenue as visits are made. A 13-week forecast carries peak-season cash into the slow months, with fixed charges at full value. Stock, warranties and financing fees all belong in the books. Labor is read at its fully loaded cost against the share of paid hours billed.
Set up the books for an HVAC company
Averan separates install from service, records plan revenue over its term and runs the seasonal cash forecast. The controller service page covers the close and the reports, and the systems service page covers connecting the field platform to QuickBooks.
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