HVAC Companies, CPA & Tax Services

Why HVAC Companies in Dallas Need a CPA Who Understands the Trade

HVAC companies face tax and accounting challenges that most general CPAs never encounter: deferred revenue from maintenance agreements, complex sales tax rules that change depending on whether a job is new construction or a repair, and seasonal cash flow swings that can make a profitable year feel like a financial crisis. One wrong classification on a subcontractor’s 1099 or a missed sales tax exemption on an install job can cost your company thousands in penalties and overpaid taxes.

At AG Freideman, we work with HVAC contractors across Dallas, Plano, Frisco, and the entire DFW metro. Al Freideman is a licensed CPA with over 30 years of experience, and he handles every HVAC client personally. No junior staff, no hand-offs. When you call, Al answers. That personal attention means your CPA actually understands how your business operates: the seasonality, the equipment costs, the crew management, and the Texas-specific tax rules that apply to every service call and installation.

Seasonal Cash Flow Planning for HVAC Businesses

Most HVAC companies in Dallas-Fort Worth earn 60% or more of their annual revenue between May and September, then face significantly slower months from November through February. Without a cash flow plan built around that reality, you can end up short on payroll in January even after a record-breaking summer.

We build seasonal cash flow projections for our HVAC clients that account for your actual revenue patterns, not generic monthly averages. This includes:

• Estimated tax payment timing: The IRS requires quarterly estimated payments (due April 15, June 15, September 15, and January 15 for the 2026 tax year), but your income doesn’t arrive in neat quarters. We calculate each payment based on when your revenue actually hits, so you’re not overpaying in Q1 and scrambling in Q3.
• Payroll reserves: Setting aside enough during peak season to cover technician wages and payroll taxes during the slow winter months.
• Equipment purchase timing: Strategically scheduling major equipment and vehicle purchases to maximize Section 179 deductions (up to $1,250,000 for 2026) while preserving cash for slower periods.

How Should HVAC Companies Handle Deferred Revenue from Maintenance Agreements?

If your company sells annual maintenance agreements (sometimes called service contracts or preventive maintenance plans), you’re collecting payment upfront for services you’ll deliver over 12 months. Under IRS Revenue Procedure 2004-34, you can defer recognizing that income until you actually perform the service, but only if your books are set up correctly to track the deferral.

Many HVAC owners deposit maintenance agreement payments into their general account and never separate the earned portion from the unearned portion. That’s a problem at tax time. If your books show all that cash as current-year income, you’ll pay taxes on revenue you haven’t actually earned yet. We set up proper deferred revenue tracking in QuickBooks so each month’s portion is recognized as you perform the service, keeping your tax liability accurate and your books audit-ready.

Equipment and Vehicle Deductions for HVAC Contractors

HVAC companies are equipment-intensive businesses. Between service vans, diagnostic tools, recovery machines, vacuum pumps, and replacement inventory, your capital expenditures can easily reach six figures in a single year. The tax code offers several ways to deduct these costs, but choosing the wrong method can leave money on the table.

• Section 179 expensing lets you deduct the full purchase price of qualifying equipment in the year you buy it, up to $1,250,000 for 2026, rather than depreciating it over several years.
• Bonus depreciation dropped to 60% for 2026 (down from 80% in 2024 and 100% in prior years), so planning the timing of large purchases matters more than ever.
• Vehicle deductions for service vans and trucks over 6,000 pounds GVWR qualify for higher first-year deductions under the SUV/truck exception to the luxury auto limits.

We review every equipment purchase with our HVAC clients before year-end to determine whether Section 179, bonus depreciation, or standard MACRS depreciation produces the best tax result for your specific situation.

Subcontractor vs. Employee Classification for Install Crews

This is one of the most common (and most expensive) mistakes HVAC companies make. If you’re paying install crews or seasonal technicians as 1099 subcontractors but treating them like W-2 employees, the IRS and Texas Workforce Commission can reclassify them and hit you with back payroll taxes, penalties, and interest. The IRS uses a multi-factor test that considers behavioral control, financial control, and the type of relationship.

Key red flags that indicate a worker is an employee, not a subcontractor:

• You set their schedule and assign specific jobs
• You provide the tools, vehicle, and uniform
• They work exclusively (or almost exclusively) for your company
• You pay them by the hour rather than by the job

If any of those apply to your install crews, you likely have a misclassification risk. We audit our HVAC clients’ worker classifications annually and help restructure arrangements to stay compliant, or properly convert workers to W-2 status with payroll set up correctly from day one. Our monthly bookkeeping and payroll packages run $300 to $600 per month and include full payroll processing with proper tax withholding.

Texas Sales Tax: New Construction vs. Repair Jobs

Texas sales tax rules for HVAC work depend entirely on whether the job is classified as new construction or a repair/remodel. Getting this wrong means either overcharging your customers or underpaying the Texas Comptroller, and both create problems.

Here’s how Texas draws the line:

• New construction and initial build-out: The HVAC contractor is considered the consumer of the materials. You pay sales tax when you purchase the equipment and materials, but you do not charge the customer sales tax on the installed system. Your labor is not taxable.
• Repairs, replacements, and retrofits on existing structures: You charge the customer sales tax (up to 8.25% in most DFW jurisdictions, which is the 6.25% state rate plus local rates) on both materials and labor for the repair.

Many HVAC companies in Dallas either charge sales tax on everything (overcharging customers on new construction jobs) or skip it entirely (creating a liability with the Comptroller on repair work). We set up job-type coding in your accounting system so every invoice automatically applies the correct tax treatment, and we handle your sales tax filings to keep you compliant.

Common HVAC Tax Mistakes We Fix

After 30 years of working with trade contractors, these are the mistakes we see most often when HVAC companies come to us from another CPA or from doing their own books:

• Treating all maintenance agreement revenue as current-year income instead of properly deferring the unearned portion, which inflates taxable income by thousands of dollars.
• Misclassifying install crews as 1099 subcontractors when the IRS would consider them employees, exposing the company to back payroll taxes plus penalties of up to 100% of the unpaid amount.
• Applying sales tax incorrectly on new construction jobs or failing to collect it on repair and replacement work, creating Comptroller audit exposure.
• Missing the Texas Franchise Tax filing deadline (May 15 each year). Even if your company owes zero tax because revenue is under the $2.47 million no-tax-due threshold, you must still file the Public Information Report. Failure to file can forfeit your LLC or corporation’s good standing with the Texas Secretary of State.
• Depreciating equipment over 5 to 7 years when a Section 179 election would produce a much larger deduction in the current year, especially for companies with strong peak-season revenue.

What’s Included When You Work with AG Freideman