Comprehensive AC Maintenance & Tune-Up
Keep your home cool and your energy bills low with thorough AC maintenance from Harmony Heating & Air. Our expert tune-ups catch small problems early, improve efficiency, and help your air conditioner, heat pump, or mini-split run reliably through Charlotte’s hottest months.
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Serving Charlotte, NC with Reliable Routine Maintenance & Tune-Ups
When Charlotte’s heat and humidity hit, your air conditioner needs to work at its best. Routine AC maintenance keeps your system running efficiently, helps prevent breakdowns, and can even lower your energy bills.
At Harmony Heating & Air, our technicians provide thorough tune-ups for all AC brands and models, including heat pumps and ductless mini-splits. We spot small issues before they turn into costly repairs — so you stay cool all season long.
Our Comprehensive AC Maintenance Plan
We make preventive air conditioner maintenance easy! When you enroll in our air conditioning maintenance program, our skilled technicians will visit your home before summer weather can make you uncomfortable (we’ll do the same for your heater before winter arrives). They’ll ensure that your AC system is working efficiency by inspecting every part of your air conditioner and performing a wide range of maintenance services:
Thermostat test. A thermostat that isn’t working correctly can’t operate a system properly, so we’ll clean and test it, then calibrate it if needed.
Controls OK? We make sure the thermostat and AC are communicating correctly.
Heat exchanger check. We’ll carefully study your heater’s heat exchanger to make sure there are no cracks or damage that can waste heat and leak deadly carbon monoxide fumes.
Test refrigerant. The liquid refrigerant that flows between your AC’s indoor and outdoor sections is what makes it work, so we’ll make sure you have enough.
Drain review. We’ll inspect your condensate drain line to ensure it’s free-flowing with no leaks.
Air filters. Using clean filters improves airflow and indoor air quality.
Properly connected. We’ll make sure your electricity is properly connected for safe operation.
Run cycles. We’ll run the AC through its cycles, to verify it’s operating as efficiently as possible.
Lubrication. Proper lubrication helps components last longer.
Examine ductwork. We’ll look for energy-wasting leaks and inadequate insulation.
Clean condensing unit. We’ll keep leaves, dirt, and other debris from interfering with your home’s comfort.
Blower motor check. We’ll clean any dust and debris and make sure it’s working.
Fan bearings. Bearings are critical to keeping fans and blower motors operating safely and quietly.
Check electrical connections. Loose or corroded connections can cause poor performance or system failure — we tighten and secure all wiring.
Inspect insulation on refrigerant lines. Proper insulation prevents energy loss and helps maintain the correct refrigerant temperature as it moves between your indoor and outdoor units.
Schedule Your AC Maintenance Right Away!
Those scorching-hot afternoons will be here before you know it. Don’t you want to be confident that your home’s AC is ready to overcome the steamiest Charlotte summer day? Reach out to Harmony Heating & Air to enroll in our home air conditioning maintenance program … and schedule your first visit from our professional technicians, so you’ll stay cool and comfy all summer long.
Call 980-223-0660 today to book your AC tune-up and avoid surprise breakdowns.
Other AC Services
AC Installation
Whether you’re building a new home or replacing an outdated unit, we’ll help you choose the right air conditioning system for your space. We install high-efficiency central AC units that deliver quiet, consistent comfort—plus long-term energy savings.
Our technicians handle everything from system sizing to final walkthrough, ensuring your install is clean, code-compliant, and built to last.
AC Repair
AC not working like it should? We’ve got you. Our licensed technicians provide fast, accurate diagnostics and honest recommendations—no pressure, no unnecessary upsells. We service all major brands and fix everything from refrigerant leaks to compressor issues and electrical problems.
You can count on us for same-day appointments when available and 24/7 emergency service when it can’t wait.
Thermostat Services
Upgrade your comfort and control with a smart thermostat. We install programmable and Wi-Fi thermostats that let you adjust your home’s temperature from anywhere, saving energy and keeping your Charlotte home cozy on your schedule.
Ductless Mini Splits
Need heating for a room addition, older home, or hard-to-reach space? Ductless mini-splits deliver targeted comfort without the hassle of new ductwork. Perfect for Charlotte’s mix of mild winters and warm days, they heat and cool efficiently, room by room.