Scheduling an HVAC tune-up is straightforward, but knowing exactly what should happen during that visit, and verifying that your technician is actually doing it, helps you get real value from the investment. In Phoenix’s demanding climate, a thorough tune-up before cooling season is one of the best ways to protect your HVAC system and your home’s comfort.
At Penguin Air, Plumbing & Electrical, our licensed HVAC technicians perform comprehensive tune-ups on all makes and models throughout the Phoenix Valley. Here’s a complete checklist of what a quality HVAC tune-up should include, and what it doesn’t.
Cooling System (AC) Tune-Up Checklist
Before Phoenix’s cooling season, your AC tune-up should cover all of the following:
- Air filter inspection: Check the current filter and replace if needed. Confirm the correct MERV rating for the system.
- Thermostat test and calibration: Verify accuracy, confirm all modes (cool, heat, fan) work correctly, and check setpoint response time.
- Electrical connections: Inspect all wiring for corrosion, loose connections, or signs of overheating. Tighten terminals as needed.
- Capacitors: Test run capacitor and start capacitor for correct microfarad rating and voltage. Replace if within 10% of failure threshold, don’t wait for them to fail in summer heat.
- Contactor: Inspect for pitting, burning, or worn contact points. Test for proper engagement.
- Refrigerant levels: Check system pressures at the service ports and compare to manufacturer specifications for the current outdoor temperature. Note: adding refrigerant without finding and repairing the leak is only a temporary fix.
- Evaporator coil: Inspect for dirt, frost patterns, or microbial growth. Clean if needed.
- Condenser coil: Clean condenser fins to remove dust, cottonwood, and debris that impair heat release.
- Condensate drain and pan: Clear the drain line, inspect the pan for cracks or corrosion, and test the float switch.
- Blower motor and wheel: Check blower motor amperage draw, inspect blower wheel for dirt accumulation, and lubricate bearings as applicable.
- Condenser fan motor: Check amperage, inspect blades for damage or balance issues, and lubricate as needed.
- Temperature differential: Measure the temperature difference between supply and return air to confirm the system is delivering proper cooling (typically 16-22°F split).
- Overall system performance report: Summarize findings, note any components approaching failure, and provide written recommendations.
Heating System Tune-Up Checklist
If your home has a gas furnace or heat pump, heating system service should be performed in the fall before the heating season:
- Gas furnace: Inspect the heat exchanger for cracks (a cracked heat exchanger can allow combustion gases including carbon monoxide into the living space, a safety concern). Clean the burners, check the igniter and flame sensor, test all safety controls, check gas pressure, and inspect the flue for proper draft.
- Heat pump: All the AC checklist items apply, plus verify defrost cycle operation (in heat mode), test the reversing valve, and confirm auxiliary heat strips are functioning correctly.
- Electric heat strips: Check resistance, verify sequencer operation, and test safety cutouts.
What’s NOT Included in a Standard Tune-Up
A tune-up is preventive maintenance on a functioning system. It does not include:
- Refrigerant addition (separate service if a leak is found and repaired)
- Duct cleaning or sealing (a separate service with different equipment)
- Replacing failed components (quoted separately as a repair)
- Drain line clearing if heavily clogged (may require additional time and a drain snake)
When to Schedule Your HVAC Tune-Up in Phoenix
The ideal timing for a Phoenix-area HVAC tune-up:
- AC tune-up: February or March, before the heat season begins and while technician availability is still good. Scheduling in April or May means competing with thousands of other homeowners who are all calling as it starts to get hot.
- Heating tune-up: September or October, before temperatures drop enough that you need reliable heating. Also a good time to inspect the AC before storing it for what little winter Phoenix has.
For maximum protection, many Phoenix homeowners enroll in a maintenance plan that provides two visits per year (cooling season prep + heating season prep) along with priority service and discounts on repairs.
To schedule your HVAC tune-up in Phoenix, call Penguin Air, Plumbing & Electrical at (480) 525-5400. We serve Phoenix, Scottsdale, Mesa, Chandler, Gilbert, Tempe, and communities throughout the Phoenix Valley.
Frequently Asked Questions
How much does an HVAC tune-up cost in Phoenix?
A professional HVAC tune-up in Phoenix typically costs $75-$150 for a single system. Some companies offer maintenance plan memberships that reduce the per-visit cost and include benefits like priority scheduling and repair discounts. Given the intensity of the Phoenix cooling season, this is one of the highest-ROI maintenance investments a homeowner can make.
How long does an HVAC tune-up take?
A thorough tune-up covering all the checklist items above typically takes 60-90 minutes. If a technician completes the visit in 20-30 minutes, they are almost certainly skipping important steps. The electrical testing, coil cleaning, and drain service alone take meaningful time.
Can I do an HVAC tune-up myself?
Homeowners can handle some maintenance tasks, changing the air filter, cleaning the condenser coil exterior with a hose, flushing the condensate drain line, and keeping the outdoor unit clear of debris. But testing capacitors, checking refrigerant pressures, inspecting the heat exchanger, and testing electrical components require specialized tools and training. The professional tune-up adds value primarily through these technical inspections.
What happens if I skip the AC tune-up in Phoenix?
Systems that receive no preventive maintenance in the Phoenix climate degrade faster and fail more often. The most common scenario: a capacitor that’s been weakening goes undetected, fails on a 115-degree July afternoon, and leaves the home without AC during peak heat. The emergency service call costs 2-3x the price of the tune-up that would have caught it.
About Penguin Air, Plumbing & Electrical
Penguin Air, Plumbing & Electrical has been serving Greater Phoenix homeowners with trusted HVAC, plumbing, and electrical services since 2011. Founded by Wade Rusk and William Hallett, Penguin is locally owned and operated, available 24 hours a day, seven days a week. Our licensed, background-checked technicians serve Phoenix, Mesa, Scottsdale, Chandler, Gilbert, Tempe, Glendale, and communities throughout the Phoenix Valley.
Call Penguin Air at (480) 525-5400 to schedule service today.