The seven essential steps to prepare your AC for summer are replacing the air filter, cleaning the outdoor condenser unit, checking refrigerant lines, testing the thermostat, clearing drain lines, inspecting ductwork, and scheduling a professional tune-up.
Why Summer AC Prep Matters
HVAC companies receive 3-5 times more service calls during the first heat wave of summer than during any other period. Most of these breakdowns are preventable with basic pre-season maintenance. A well-maintained AC system uses 15-20% less energy and lasts 5-7 years longer than a neglected one. Call your local HVAC contractor to schedule your tune-up before the rush hits.
The 7 Steps
Step 1: Replace the Air Filter
This is the single most important maintenance task. A dirty filter restricts airflow by up to 50%, forcing your system to work harder, increasing energy bills, and accelerating wear. Use a MERV 8-11 rated filter for most homes and replace it every 30-90 days during cooling season.
Step 2: Clean the Outdoor Unit
Turn off the power to the condenser unit. Remove debris, leaves, and grass clippings from around and inside the unit. Gently rinse the fins with a garden hose (never a pressure washer). Maintain 2 feet of clearance around all sides.
Step 3: Check Refrigerant Lines
Inspect the copper lines running from the outdoor unit to the indoor unit. The larger, insulated line should feel cold when the AC is running. If the insulation is damaged or missing, replace it. Damaged insulation reduces efficiency by 10-15%.
Step 4: Test the Thermostat
Set your thermostat to cooling mode and lower the temperature 5 degrees below room temperature. The AC should start within a few minutes. If it does not respond, check batteries and wiring. Consider upgrading to a smart thermostat for better energy management.
Step 5: Clear the Drain Line
The condensate drain line removes moisture from the evaporator coil. A clogged line causes water backup and potential water damage. Pour a cup of white vinegar into the drain line access point to prevent algae and mold buildup.
Step 6: Inspect Ductwork
Check visible ductwork in the attic and basement for disconnections, holes, or crushed sections. Leaky ducts can waste 20-30% of your cooled air. Seal small gaps with mastic sealant or metal-backed tape (not standard duct tape). Learn how contractors across industries use lead management systems to streamline customer communication during peak seasons.
Step 7: Schedule a Professional Tune-Up
A professional HVAC technician checks refrigerant levels, electrical connections, compressor operation, and overall system performance. Schedule this in April or May — before the summer rush — for better pricing and availability. Vemra LeadOS helps contractors track and prioritize maintenance appointments so no customer falls through the cracks.
FAQ
How much does an AC tune-up cost?
A professional AC tune-up costs $75-$200. Many HVAC companies offer spring specials and maintenance plans that reduce the per-visit cost. The investment typically pays for itself through lower energy bills and avoided repair costs.
How often should I service my AC?
Professional service once per year (spring) is recommended for most systems. Change the air filter every 1-3 months during cooling season. Homes with pets, allergies, or dusty conditions should change filters more frequently.
What temperature should I set my AC to in summer?
The Department of Energy recommends 78 degrees F when you are home and higher when you are away. Each degree below 78 increases energy consumption by 3-5%. A programmable or smart thermostat automates these adjustments for maximum savings.
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