How to Verify Your AC Was Installed Correctly (A Homeowner's Post-Install Inspection Guide)

A new AC system that wasn’t installed right will tell you fast. If something looks or sounds wrong after your AC unit installation, you have every right to call it out before the crew drives off. This puts you in control before a small problem becomes a bigger one. If you’re a homeowner who recently had AC installation in Wolfforth, TX, here’s your post-install checklist.

What You Can Check on Your Own

These are visual and hands-near checks only. Stay clear of the outdoor fan, electrical disconnect, and refrigerant lines while the system is running.

  • Airflow at the vents: Hold your hand near each register. Airflow should feel strong and consistent throughout the house.
  • Thermostat response: Adjust the setting and confirm the system responds within seconds, not minutes.
  • Outdoor unit placement: It should sit level on its pad with at least 18 to 24 inches of clearance on all sides.
  • Refrigerant line insulation: The lines running from the outdoor unit should be fully wrapped and secured, with no exposed sections.
  • Condensate drain line: Look for a PVC pipe near the indoor unit that slopes downward. No standing water should be present around the base.
  • Air handler cabinet: Run your hand along the seams where the unit meets the ductwork. You shouldn’t feel air escaping.

These visual and physical checks take about 15 minutes and can catch obvious issues immediately after your AC unit installation.

What Your HVAC Contractor Must Verify

Some parts of the job can’t be eyeballed. Your installation technician is responsible for confirming all of the following before the job is considered complete:

  • Refrigerant charge: This requires gauges and can only be measured by a licensed technician. An undercharged or overcharged system won’t cool correctly and can damage the compressor over time.
  • Electrical connections and load: Wiring must meet local code. The disconnect box, breaker size, and thermostat wiring all need to be tested, not just connected.
  • Static pressure and airflow readings: Proper airflow through the duct system is measured, not assumed. Improper duct sizing or connections affect efficiency and comfort.
  • System startup diagnostics: The contractor should run the system through a full cycle and confirm operating pressures, temperatures, and amp draws are within spec.

Ask your HVAC contractor to show you the startup checklist or commissioning report. A reputable company will have one.

Frequently Asked Questions About AC Installation

Can I run the AC the same day it’s installed?

Yes. The contractor should test it before they leave, and you can continue running it normally after they do. There’s no break-in period required for a new system.

What documentation should I receive after installation?

At minimum: a manufacturer warranty registration, a copy of any permits pulled, and a summary of the equipment installed. If financing was involved, keep those records separately as well.

What if the contractor pushes back when I report an issue?

Stay calm and be specific. Reference what was or wasn’t checked during startup. If the issue persists and the installer is unresponsive, contact the equipment manufacturer directly, since warranty coverage may depend on proper installation being documented.

How soon should I follow up if something seems wrong?

The same day if possible. Most installation-related issues are covered under labor warranties, but those windows vary. Don’t wait weeks to report something that showed up on day one.

Trust the Team That Gets It Right

On the Double Heating & Cooling has been family-owned and operated since 2012, and we treat every job like our name is on it. Every installation comes backed by 10-year manufacturer warranties, with select systems covered for up to 99 years. We offer free estimates, financing options to fit different budgets, and every technician we send to your home is background-checked, drug-tested, licensed, bonded, and insured.

If you want someone to do the job right from the start, give us a call.