Denver summers can bring surprisingly hot weather, with temperatures often reaching into the 90s and beyond. While our high altitude provides some relief, a properly functioning air conditioning system is essential for comfort during the hottest days. Preparing your AC system in spring ensures reliable cooling all summer long and can prevent costly breakdowns when you need it most.

Why Spring AC Preparation Matters

After months of sitting idle during winter, your air conditioning system needs attention before the cooling season begins. Proper preparation:

• Prevents unexpected breakdowns during peak summer heat
• Improves energy efficiency and reduces utility bills
• Extends the life of your cooling system
• Ensures optimal indoor air quality
• Identifies potential problems before they become expensive repairs

DIY Spring AC Preparation Tasks

1. Replace or Clean Air Filters

Start with the most important maintenance task:

• Replace disposable filters (check monthly during cooling season)
• Clean reusable filters with mild soap and water
• Ensure filters are completely dry before reinstalling
• Consider upgrading to higher MERV-rated filters for better air quality

2. Clean and Inspect the Outdoor Unit

Your outdoor condenser unit needs special attention after winter:

• Turn off power to the unit before cleaning
• Remove leaves, twigs, and debris from around the unit
• Gently rinse the exterior coils with a garden hose
• Trim vegetation to maintain 2-3 feet of clearance on all sides
• Check that the unit is level and stable

3. Clear Indoor Vents and Registers

Ensure proper airflow throughout your home:

• Remove dust and debris from all supply and return vents
• Ensure furniture and drapes aren't blocking airflow
• Open all vents in areas you want to cool
• Check that dampers in ductwork are properly positioned

4. Test Your Thermostat

Make sure your thermostat is ready for cooling season:

• Replace batteries in battery-operated units
• Switch from heating to cooling mode
• Test that the system responds correctly
• Program or adjust cooling schedules for summer

5. Check Electrical Connections

Inspect visible electrical components:

• Look for frayed or damaged wiring
• Ensure electrical disconnect switch is in good condition
• Check that outdoor unit's electrical cover is secure
• Call a professional for any electrical concerns

Professional AC Preparation Services

Some maintenance tasks should be performed by qualified HVAC professionals:

System Inspection and Testing

• Refrigerant level check and adjustment
• Electrical connection inspection and tightening
• Thermostat calibration
• System performance testing

Deep Cleaning Services

• Evaporator coil cleaning
• Condenser coil deep cleaning
• Blower motor cleaning and lubrication
• Condensate drain cleaning

Component Maintenance

• Fan belt inspection and adjustment
• Motor bearing lubrication
• Safety control testing
• Ductwork inspection

Signs Your AC Needs Professional Attention

Call for professional service if you notice any of these warning signs:

Summer Energy Efficiency Tips

Maximize your AC's efficiency and minimize energy costs:

Optimal Temperature Settings

• Set your thermostat to 78°F when home
• Raise temperature when away (85°F maximum)
• Use ceiling fans to feel cooler at higher temperatures
• Avoid drastic temperature changes

Reduce Heat Gain

• Close blinds and curtains during peak sun hours
• Use exhaust fans when cooking or showering
• Avoid using heat-generating appliances during hot days
• Cook outdoors when possible

Improve Home Efficiency

• Seal air leaks around windows and doors
• Add insulation to reduce heat transfer
• Consider window film to reduce solar heat gain
• Plant shade trees on the south and west sides of your home

Common AC Problems and Solutions

AC Won't Start

• Check thermostat settings and batteries
• Ensure circuit breakers haven't tripped
• Check that outdoor disconnect switch is on
• Replace dirty air filter

Poor Cooling Performance

• Clean outdoor unit of debris
• Replace dirty air filter
• Check for closed or blocked vents
• Ensure proper thermostat settings

High Energy Bills

• Replace dirty air filters more frequently
• Seal air leaks in ductwork
• Add insulation to improve efficiency
• Schedule professional maintenance

When to Schedule Professional Maintenance

The best time to schedule professional AC maintenance is in spring, before the cooling season begins:

• Early Spring (March-April): Ideal time for maintenance
• Avoid peak summer: Technicians are busiest during hot weather
• Annual service: Schedule yearly professional tune-ups
• Before first use: Don't wait for problems to arise