Chattanooga summers are no joke. By the time the heat and humidity arrive in full force, the last thing you want is an air conditioner that hasn’t been serviced since last year. A pre-season maintenance check — done in spring while temperatures are still comfortable — is the single most effective way to prevent costly breakdowns, extend your system’s lifespan, and keep your energy bills under control all summer long.
Here’s exactly what needs to be done, what you can handle yourself, and what should always be left to a licensed HVAC technician.
What You Can Do Yourself Before Summer
Change Your Air Filter
If there’s one maintenance task every Chattanooga homeowner should do without fail, it’s this one. A clean air filter is the simplest, most affordable way to keep your central air system running efficiently.
A clogged filter restricts airflow, forces your system to work harder, drives up energy costs, and accelerates wear on components. A clean filter, by contrast, keeps indoor air free of dust, pollen, allergens, and pollutants — and keeps your ductwork cleaner over time, reducing how often it needs professional cleaning.
Replacement filters are inexpensive and the swap takes minutes. Replace yours every 3–6 months, and more frequently if you have pets or allergy sufferers in the home.
Do a Visual Inspection
You don’t need to be a technician to spot obvious problems. A quick walk-around inspection of your system can catch issues before they become expensive:
- Check your ductwork — Head into the attic and inspect visible ventilation ducts for damage, disconnected sections, or signs of moisture.
- Inspect the outdoor condenser unit — Clear at least 3 feet of space around the unit. Remove any debris, overgrown vegetation, or winter accumulation. Check for physical damage to the casing or fins.
- Look for pooled water around the HVAC unit — especially relevant if you ran a heat pump over winter. Standing water can indicate a condensate drain issue or refrigerant problem.
- Check the evaporator and condenser coils — If they look dirty or coated in grime, they need cleaning. Dirty coils impair heat transfer, forcing your system to work harder and consume more energy.
Adjust Your Thermostat Settings
Before the season starts, take a moment to review your thermostat settings. Raising the target temperature by just one or two degrees — and compensating with a ceiling fan — can meaningfully reduce strain on your system and lower your monthly utility bills without a significant drop in comfort. Most people adjust to a slightly warmer setting within a few days.
If you’re still using a basic programmable thermostat, this is also a good time to consider upgrading to a smart thermostat, which automatically optimises your settings based on your schedule and usage patterns.
Test Your Smoke and Carbon Monoxide Alarms
Since you’re already inspecting your home systems, now is the ideal time to test your smoke and CO alarms and replace any dead batteries. Carbon monoxide is a particular concern when HVAC systems and furnaces start cycling after periods of inactivity. If your alarms are more than 10 years old, replace the units entirely.
For the best protection, consider upgrading to an interconnected alarm network — when one alarm detects a threat, all alarms in the home trigger simultaneously, maximising your warning time.
What a Professional AC Maintenance Should Always Include
DIY checks cover the basics, but a number of critical systems require a licensed HVAC technician. If your annual maintenance visit only involves a filter swap and a checklist, you’re not getting full value. A proper professional AC service in Chattanooga should always cover the following:
Moving Part Lubrication Blower fan bearings and all other moving parts in a forced-air system require proper lubrication to operate without friction. Unlubricated components wear faster, run louder, and are more likely to fail mid-season.
Thermostat Calibration Modern thermostats — particularly smart and multi-zone systems — require professional calibration to ensure they’re accurately reading temperature and triggering the system at the right times. A miscalibrated thermostat can cause your system to short-cycle, overheat, or run longer than necessary.
Electrical Connection Testing All electrical connections, contacts, and controls should be inspected and tested for security and proper function. Electrical faults are a leading cause of home fires — and because wiring runs behind walls and inside units, problems can develop undetected without a professional inspection.
Condensate Drain Inspection Your system’s condensate drain removes moisture extracted from the air during the cooling process. A blocked drain can cause water to back up into the unit or drip into your ceiling and walls, leading to water damage and mould growth. A quick inspection and flush at the start of the season prevents this entirely.
Refrigerant Level Check Low refrigerant is a common reason air conditioners blow warm air or struggle to cool effectively. A technician will check refrigerant levels and inspect for leaks — something that cannot be safely done without proper certification and equipment.
Frequently Asked Questions About AC Maintenance in Chattanooga
How often should I have my AC serviced professionally? Once a year, ideally in spring before the cooling season begins. Annual maintenance keeps your warranty valid, catches small issues before they become costly, and ensures your system is operating at peak efficiency when you need it most.
What happens if I skip my annual AC maintenance? Skipped maintenance leads to reduced efficiency, higher energy bills, more frequent breakdowns, and a shorter system lifespan. Most mid-season AC failures in Chattanooga are preventable with routine servicing.
How do I know if my AC needs more than just maintenance? Signs that your system may need repair or replacement include warm air from vents, unusual noises, frequent cycling on and off, rising energy bills without a change in usage, or a system that’s more than 12–15 years old.
What is the best temperature to set my thermostat in summer? The U.S. Department of Energy recommends 78°F when you’re home and higher when you’re away. Pairing this with ceiling fans allows you to feel comfortable at a higher thermostat setting, reducing strain on your AC and lowering energy costs.
How long does a professional AC tune-up take? A thorough inspection and maintenance visit typically takes 1–2 hours depending on system size and condition.
Don’t Wait Until Your AC Breaks Down This Summer
The best time to service your air conditioner is before you need it. Scheduling a spring maintenance visit means a licensed technician catches problems while they’re still minor — before the hottest days arrive and before your system is under maximum load.
At Metro Plumbing, Heating & Air, our certified HVAC technicians provide comprehensive AC maintenance, repair, and replacement across Greater Chattanooga. With upfront pricing, same-day availability, and 35+ years serving the Chattanooga region, we’re the team to call before summer gets here.
📞 Call us today at (423) 616-1025 or contact us online to schedule your spring AC maintenance.
Metro Plumbing, Heating, and Air Conditioning is the service company you want! Call us today at (423) 616-1025!