Commercial HVAC Maintenance Contracts: What's Included and What to Pay

Commercial HVAC maintenance contracts in North Texas cost $500-$5,000 per year and prevent up to 90% of system failures. A single RTU on a small retail space runs $500-$1,200 annually. Mid-size offices with multiple units run $1,500-$3,500. The math is simple: the average emergency commercial repair costs $1,500-$5,000 plus lost revenue, so one prevented breakdown pays for the entire contract.

I am going to be straight with you. I make money on maintenance contracts. But I also make money on emergency repairs, and emergency repairs pay a lot more. So when I tell you a maintenance contract is worth it, I am actually talking myself out of higher-revenue work. That should tell you something.

Here is everything you need to know about commercial HVAC maintenance contracts, what they should include, what they should cost, and how to avoid getting ripped off.

What a Commercial Maintenance Contract Includes

A legitimate commercial HVAC maintenance contract covers scheduled preventive visits. Here is what should happen at every visit.

Every Quarterly Visit (4x Per Year)

• Filter inspection and replacement: Dirty filters are the number one cause of commercial HVAC failures. Period.
• Coil inspection and cleaning: Condenser and evaporator coils get dirty. Dirty coils make your system work 30% harder.
• Refrigerant level check: Low refrigerant means a leak. Catching it early saves thousands compared to a compressor burnout.
• Electrical connection testing: Loose connections cause fires. I check every terminal, contactor, and capacitor.
• Thermostat calibration: A thermostat that reads 2 degrees off wastes 5-10% on energy bills.
• Drain line clearing: Clogged condensate drains cause water damage. I have seen $15,000 in ceiling damage from a $5 drain clog.
• Belt inspection and tension (on belt-drive units): Worn belts slip, squeal, and eventually snap during the hottest week of the year.
• Motor and bearing lubrication: Moving parts need lubrication. Dry bearings burn out motors.
• Safety control testing: Gas pressure, flame sensors, limit switches. These keep your building safe.
• Written report: You should get a report after every visit documenting what was done, what was found, and what needs attention.

Annual complete Service (1x Per Year, Usually Spring)

Everything above plus:

• Full coil deep cleaning: Chemical wash of condenser and evaporator coils
• Combustion analysis (heating systems): Checking gas pressure, flame pattern, heat exchanger integrity
• Economizer testing and calibration: Economizers save energy by using outside air when conditions are right. Most I inspect are stuck or disconnected.
• Full electrical amp draw testing: Comparing actual motor draws to nameplate ratings catches failing components before they die
• Ductwork inspection: Checking for leaks, disconnections, and insulation damage
• Equipment life assessment: Honest evaluation of remaining useful life so you can plan for replacement instead of getting blindsided

Pricing Tiers by Building Size

Here is what I charge and what you should expect to pay from any reputable commercial HVAC contractor in North Texas.

Tier 1: Small Commercial ($500-$1,200/year)

• 1-2 units, under 5,000 sq ft
• Examples: small retail shop, single-suite office, small restaurant
• Includes 4 quarterly visits and filters
• Typical buildings: strip mall units in Addison, small offices in Allen

Tier 2: Mid-Size Commercial ($1,500-$3,500/year)

• 2-5 units, 5,000-15,000 sq ft
• Examples: multi-suite office, large restaurant, medical office, retail store
• Includes 4 quarterly visits, filters, annual deep cleaning
• Priority scheduling for repairs

Tier 3: Large Commercial ($3,000-$5,000+/year)

• 5+ units or complex systems, 15,000+ sq ft
• Examples: large office building, multi-tenant retail, warehouse
• Includes quarterly visits, filters, semi-annual deep cleaning
• Priority emergency response (2-4 hour guarantee)
• Discounted parts and labor rates (typically 10-20% off)

What Affects Price

The biggest price drivers are:

1. Number of units: Each additional unit adds $300-$800/year to the contract
2. System type: VRF and chiller systems cost more to maintain than RTUs
3. Building use: Restaurants cost more because of grease and heavy use
4. Equipment age: Older systems need more attention and more frequent visits
5. Access difficulty: Rooftop units requiring ladder access take more time than ground-level split systems

What is NOT Included (Expect Surprises)

This is where maintenance contracts get tricky. Most contracts do not cover:

• Refrigerant: If your system has a leak and needs refrigerant, that is extra. R-410A runs $50-$100/pound in North Texas. A 10-ton system might need 20+ pounds. Some contractors include the first 2-3 pounds.
• Major repairs: Compressor replacement, motor replacement, control board replacement. These are repair items, not maintenance items.
• Parts beyond filters and belts: Most contracts cover filters and basic consumables. Everything else is billed separately.
• Emergency after-hours service: Even with a contract, after-hours calls usually have a $150-$350 surcharge. Some premium contracts waive this.
• Code-required upgrades: If an inspection reveals a code violation, fixing it is on you, not the maintenance contract.
• Duct cleaning: Full duct cleaning is a separate service, typically $1,500-$4,000 for commercial buildings.

Always read the fine print. If the contract says “maintenance only,” that means they show up, inspect, change filters, and anything else is an additional bill.

ROI of Preventive Maintenance

The data on this is overwhelming. Here is what I see in the field and what industry research backs up.

90% of commercial HVAC failures are preventable with regular maintenance. That is not my number. That comes from ASHRAE studies on commercial building systems.

Let me put that in dollars.

A 5,000 sq ft retail space in Plano with two 5-ton RTUs:

• Without maintenance: Average of 1.5 emergency repairs per year at $1,200-$2,800 each, plus $800-$2,000 in lost business per incident, plus 3-5 years shorter equipment life (replacing at year 10 instead of year 15 costs you $15,000-$25,000 sooner), plus 15-25% higher energy bills from dirty coils and worn parts
• With maintenance contract at $1,200/year: Maybe one minor repair every 2-3 years, equipment lasts to 15+ years, energy bills stay optimized

Over 10 years, the maintenance contract costs $12,000. Without it, you are looking at $25,000-$40,000 in extra repairs, premature replacement, and wasted energy.

The maintenance contract pays for itself 2-3 times over.

How to Compare Contractor Bids

When you get maintenance contract proposals from multiple contractors, compare these items side by side:

1. Number of visits per year: Anything less than quarterly is not enough for North Texas
2. What is included vs. extra: Get a clear list of what is covered and what triggers an additional bill
3. Filter cost: Some include filters, some charge per filter. Filters for commercial units run $15-$85 each.
4. Response time guarantee: A contract without a response time commitment is just a suggestion
5. Discount on repairs: Good contracts offer 10-20% off parts and labor for repairs beyond the contract scope
6. Cancellation terms: Avoid contracts with heavy early termination penalties. 30-60 day notice should be standard.
7. Technician qualifications: Ask if the same tech will service your building each time. Consistency matters because they learn your system.

Red Flags in Maintenance Contracts

I have seen some bad contracts out there. Watch for these.

Extremely low pricing: If someone offers to maintain your 4-unit office building for $400/year, they are either cutting corners or planning to upsell you on every visit. You get what you pay for.

Vague scope of work: “Annual inspection and tune-up” is not a scope of work. You need a specific checklist of what happens at every visit.

Long-term lock-in: Any contract longer than 1 year with heavy cancellation penalties is a warning sign. Good contractors earn your renewal.

No written reports: If they do not document what they found and what they did, how do you know they actually did anything? I have taken over accounts where the previous contractor’s “quarterly service” was a 20-minute filter change and nothing else.

All-inclusive too-good-to-be-true pricing: Contracts that claim to cover “all repairs and parts” for a flat fee either have massive exclusions in the fine print or the contractor is planning to go out of business before the bill comes due.

No license or insurance verification: In Texas, commercial HVAC work requires a TACL license. Ask for it. Also verify they carry at least $1M in general liability. Working on your roof creates real liability.

Questions to Ask Before Signing

Before you sign any commercial HVAC maintenance contract, ask these questions:

1. What exactly happens at each visit? Get a written checklist, not a vague description.
2. What is your guaranteed response time for emergencies? For commercial, you need 2-4 hours, not “next business day.”
3. Who will service my equipment? Will it be the same technician who knows my system?
4. What is NOT covered? Get this in writing so there are no surprises.
5. Can I see your TACL license and insurance certificate? Non-negotiable for commercial work.
6. What happens if you find a major problem during a maintenance visit? Do they give you a quote on the spot? Do they have authority to proceed under a certain dollar amount?
7. How do I cancel? What is the notice period and are there penalties?
8. Do you provide reports after every visit? You need documentation for warranty claims, insurance, and your own records.

If a contractor cannot answer these clearly and confidently, move on.

Getting Started

If you own or manage a commercial building in North Texas and you do not have a maintenance contract, you are gambling with your equipment, your comfort, your tenants, and your wallet.

I have been doing commercial HVAC maintenance across Frisco, Plano, McKinney, Allen, Addison, and the surrounding areas for twelve years. I will walk your building, inspect your equipment, and give you a straight quote with everything spelled out.

Contact us or call (940) 390-5676 to schedule a free commercial maintenance assessment.

Frequently Asked Questions

How much does a commercial HVAC maintenance contract cost?

Commercial HVAC maintenance contracts in North Texas cost $500-$5,000 per year depending on building size, number of units, and system complexity. A single RTU on a small retail space runs $500-$1,200/year. A mid-size office with multiple units runs $1,500-$3,500/year. Large commercial properties with 5+ units start at $3,000/year.

What should a commercial HVAC maintenance contract include?

A good contract includes quarterly inspections with filter changes, coil cleaning, refrigerant checks, electrical testing, drain line clearing, belt inspection, thermostat calibration, and a written report after every visit. It should also include priority scheduling for repairs and discounted parts/labor rates. An annual deep service should include chemical coil cleaning, combustion analysis, and economizer calibration.

Are commercial HVAC maintenance contracts worth it?

Yes. Preventive maintenance prevents up to 90% of commercial HVAC failures. The average emergency commercial repair costs $1,500-$5,000 plus lost business revenue. A $1,500/year maintenance contract that prevents even one emergency call pays for itself immediately. Over 10 years, proper maintenance saves $25,000-$40,000 compared to a reactive approach.

How often should commercial HVAC be serviced?

Quarterly at minimum for most commercial buildings. In North Texas, schedule service in March (pre-cooling season prep), June (mid-summer performance check), September (cooling-to-heating transition), and December (heating season check). High-demand environments like restaurants, medical offices, and 24/7 operations should have monthly service visits.