How Do I Check If My HVAC Unit Is Still Under Warranty?

Before paying for a major HVAC fix, run a warranty lookup to confirm the existing warranty is still active. A valid existing warranty can save customers hundreds — sometimes thousands — on replacement components. Yet most homeowners don't know how to view their status, add owner information to the product registration, or receive the full years of coverage they're owed. In most brands the existing warranty covers parts, not the labor.

Here's the short version of a warranty lookup: find the serial, enter it in the manufacturer's portal, confirm the registered owner and date, view the limited warranty certificate, and connect with the dealer for any service claim.

Step 1: Find the Serial Number

Every warranty lookup starts with the serial number. Look for a metal data plate on the side or back of the outdoor condenser unit — a silver or white label with printed text. Take a photo. Do the same for the indoor air handler's nameplate (usually on the side of the cabinet or behind the access panel). The plate shows serial number, manufacture date, refrigerant type, and electrical specs.

Step 2: Look Up the Existing Warranty Online

Most major HVAC manufacturers have an online warranty search tool. Enter the product serial number and the dealer who installed it, and you can view the existing warranty certificate and full warranty terms. Here are the dealer portals for the brands we install most often in Fort Myers:

Trane

Visit Trane's warranty search page and enter the product serial number. Trane typically offers a 10-year limited warranty on parts when the HVAC system is registered within 60 days of installation. Unregistered units drop to a 5-year base limited warranty. The Trane registration portal also lets you submit updated owner information if the house has changed hands.

Ruud

Ruud's existing warranty details can be searched through their product registration portal. Like Trane, Ruud offers an extended limited warranty when units are properly registered. The product serial number encodes the manufacture date, which tells the dealer how many years of registered coverage remain.

Daikin

Daikin provides a warranty search tool on their website. Daikin units typically come with a 12-year limited warranty on parts when registered — one of the more generous HVAC system warranties on the market. An authorized Daikin dealer can also confirm existing warranty status on equipment installed years ago.

Samsung

Samsung's HVAC warranty can be searched through their support portal. Samsung mini-split and Wind-Free systems have limited warranty terms that differ from traditional split systems — double check the warranty certificate for the exact years of coverage on your specific product.

Why the Dealer Matters for Warranty Claims

The dealer who installed the HVAC system is your primary point of contact for any existing warranty claim. Manufacturers want the original dealer to verify the installation was correct before they'll cover parts. If you can't reach the original dealer — they went out of business, moved, or no longer sell your brand — any authorized dealer in the area can take over the claim. Big Air is an authorized dealer for Trane, Ruud, Daikin, and Samsung, so we can handle warranty claims for any of those products, even if another contractor installed the system.

Keep in mind: not the labor cost, only parts are typically covered. The manufacturer sends the replacement compressor, coil, or board free of charge. The dealer still bills for the time to diagnose and replace the component. This catches customers off guard every time — so confirm what the warranty covers before you submit a service request.

Step 3: Understand What's Covered

Parts Warranty vs. Labor Warranty

This is where most homeowners get confused. There are two distinct types of warranty coverage:

Parts warranty (from the manufacturer): Covers the cost of replacement components — compressor, coil, fan motor, control board, etc. If a covered part fails within the warranty period, the manufacturer provides a replacement at no charge. Typical coverage: 5-10 years depending on registration status.

Labor warranty (from the installer): Covers the technician's time to diagnose the problem, remove the failed part, and install the replacement. This warranty comes from the company that installed your system, not the manufacturer. Typical coverage: 1 year from the installing contractor, though some companies offer more.

Here's what that means in practice: If your compressor fails in year 5, the manufacturer sends a free compressor (parts warranty), but you still pay the technician $500-$1,500+ for labor to install it — unless you have a labor warranty that extends that far.

Big Air's Warranty on Installations

At Big Air, we stand behind our work with stronger warranty coverage than the industry standard:

• Up to 3-year labor warranty on new installations
• 10-year manufacturer parts warranty (we handle registration for you)
• Complimentary 6-month checkup and cleaning after installation
• 1-year parts warranty on repairs

What Voids Your HVAC Warranty

Manufacturers include conditions that must be met for warranty coverage to remain valid. Here are the most common reasons warranties get voided:

Not Registering Your Equipment

Most manufacturers require you to register your new HVAC system within 60-90 days of installation. Failing to register doesn't void the warranty entirely, but it typically reduces coverage from 10 years to 5 years for parts. When Big Air installs a system, we handle registration for you — but if you had another company do the install, verify that they registered it.

Skipping Regular Maintenance

Manufacturers may require proof of annual professional maintenance to honor warranty claims. This typically means at least one professional maintenance visit per year. Keep your maintenance receipts — they're your proof of compliance.

Unauthorized Repairs

Having your system repaired by an unlicensed technician or using non-approved replacement parts can void your warranty. Always use a licensed HVAC contractor for repairs, and make sure they use manufacturer-approved parts.

Improper Installation

If the original installation wasn't done correctly — wrong line sizes, improper refrigerant charge, incorrect electrical connections — the manufacturer may deny warranty claims. This is one of the most important reasons to choose a reputable installer for your AC installation.

What If Your Warranty Has Expired?

If your HVAC is out of warranty, you still have options:

• Get a repair estimate: Sometimes the repair cost is reasonable even without warranty coverage, and a small fix can buy several more years of useful life.
• Compare repair vs. replacement: If your system is 10+ years old and facing a major issue, a new HVAC with a fresh multi-year limited warranty may be the better investment — especially if you're ready to buy reliability for the next decade.
• Check for extended warranties: If you bought an extended plan at the time of installation, view those warranty terms — it may still be active.
• Ask about manufacturer recalls: Some parts are recalled or have known issues that manufacturers will cover even outside the limited warranty. Your dealer can search for open recalls against your serial number and submit the claim on your behalf.

Quick Example: Running an HVAC Warranty Check

Here's a quick example of a full HVAC warranty check in order. Enter the serial number into the manufacturer's warranty lookup tool. Confirm the registration date and the length of coverage. View the limited warranty certificate and add any missing owner information. If the dealer who handled the installation is no longer in business, connect with an authorized dealer to take over the claim. If the registration was never completed, most manufacturers will let you add it late — sometimes with a reduced number of years of coverage. Any issues with the warranty lookup, change of ownership, or required annual maintenance proof can be resolved by providing additional information to the dealer.

Extended Warranties: Are They Worth It?

Extended warranties from third-party providers can fill the gap between the manufacturer's parts warranty and labor coverage. Whether they're worth the cost depends on:

• The age and brand of your system
• The cost of the extended warranty vs. typical repair costs
• What's actually covered (read the fine print — some exclude the most expensive components)
• Whether you're comfortable setting aside repair funds instead

In general, a well-maintained system from a reputable brand is less likely to need major repairs during the manufacturer's warranty period. The labor warranty from your installer is usually the bigger gap to fill.

Keep Your Warranty Information Organized

Create a file (digital or physical) with all the warranty information in one place:

• Photos of both data plates (indoor and outdoor units)
• Product model and serial number for each unit
• Installation date and the dealer's business name
• Registration confirmation email or warranty certificate PDF
• Any additional information the dealer provided at install
• All maintenance receipts — required in some warranty terms to confirm the system was serviced

Having this additional information organized makes a warranty claim faster. When you reach out to the dealer, they can search by product serial number, confirm the registration, and start the claim in minutes rather than hours.

Need Help with an HVAC Warranty Check?

If you're not sure how to start the HVAC warranty check, or can't find your product information, Big Air can help. Our technicians can identify the HVAC system, search the manufacturer's database, confirm existing warranty status, and let you know exactly what the limited warranty covers before any work begins. We hope to save customers from buying parts they shouldn't have to pay for — for instance, a compressor still under an existing warranty — by running the warranty check up front.

Contact us to schedule a service call or get a warranty check on your HVAC system. We believe in transparency — customers should always know what's covered and what's not the labor side before making repair decisions. We want you to learn the full warranty picture up front, not after the bill lands.