Skip to main content
Maintenance Seasonal

Spring AC Preparation | Complete Texas Summer Readiness Guide

March is the ideal time to prepare your AC for Texas summer. A little preparation now prevents emergencies in July when temperatures hit 100°F+ and wait times stretch to a week.

Why Spring Preparation Matters in Texas

Texas air conditioners work harder and longer than almost anywhere else in the country. While a northern AC might run 3-4 months per year, Texas systems run 6-8 months continuously—sometimes longer. This extended runtime means more wear, more potential for problems, and more importance placed on preventative maintenance.

The consequences of skipping spring preparation are severe: mid-summer breakdowns in 100°F+ heat, wait times of 2-7 days for repairs, emergency pricing that's 50-100% higher than scheduled service, and potential health risks for vulnerable family members.

Texas Summer Reality Check

July Repair Wait: 2-7 days typical
March Repair Wait: Same day or next day
Summer Emergency Rate: $150-$300 just to show up
Spring Tune-Up: $89-$150 total

When to Schedule: Month-by-Month Guide

Timing matters for both availability and pricing. Here's your Texas scheduling calendar.

January

Early Bird

Availability: Excellent

Pricing: Best deals available

Weather: Too cold to test (usually)

Schedule appointment for February-March service

February

Ideal

Availability: Excellent

Pricing: Normal rates

Weather: Variable, some days warm enough to test

Best month—beat the spring rush

March

Ideal

Availability: Very Good

Pricing: Normal rates

Weather: 60-80°F typical, perfect for testing

Excellent month—AC testing conditions are good

April

Good

Availability: Good

Pricing: Normal rates

Weather: 70-85°F, occasional heat waves

Still good availability, rush beginning

May

Last Chance

Availability: Limited

Pricing: Rates may increase

Weather: 80-95°F, summer starting

Final window before summer rush

June+

Emergency Only

Availability: Very Limited

Pricing: Emergency rates common

Weather: 95-105°F typical

Wait times of 2-7 days, higher prices

Complete Homeowner DIY Checklist

These tasks don't require professional tools and can save you money while keeping your system running efficiently.

Replace Air Filter

Critical 5 minutes $5-$25

Why: Start summer with maximum airflow capacity

How: Turn off system, locate filter slot (usually at return vent or air handler), note size on old filter frame, slide out old filter, insert new filter with airflow arrow pointing toward unit

Texas Tip: Use MERV 8-11 for Texas—higher ratings restrict airflow in humid conditions

Test AC Operation

Critical 15 minutes Free

Why: Find problems before you desperately need cooling

How: Set thermostat to cooling mode, lower temperature 5°F below current room temp, listen for compressor startup (outdoor unit), verify cold air at vents within 5 minutes

Texas Tip: Test on a day above 60°F—most systems won't run in cool mode if it's too cold outside

Clear Outdoor Unit

Critical 30-45 minutes Free

Why: Blocked airflow increases energy bills 5-25%

How: Turn off system at thermostat, remove debris from top and sides, trim vegetation back 2 feet on all sides, gently rinse coils with garden hose from inside out

Texas Tip: Oak pollen season (February-April) clogs coils fast—clean monthly during spring

Clean/Replace Thermostat Batteries

High 5 minutes $5-$10

Why: Dead batteries = no AC when you need it most

How: Remove thermostat cover, replace AA or AAA batteries, verify display works, confirm settings are correct for cooling season

Texas Tip: Heat damage is common—if display is faded or unresponsive, thermostat may need replacement

Clean Supply Vents

Medium 30 minutes Free

Why: Dusty vents restrict airflow and spread allergens

How: Remove vent covers, vacuum dust from covers and duct opening, wash covers with mild soap if needed, ensure dampers are open

Texas Tip: Check for mold around vents—high humidity + closed house all winter can cause growth

Inspect and Clean Drain Line

Critical 15 minutes $3

Why: Clogged drains cause water damage and system shutdowns

How: Locate drain line (PVC pipe near indoor unit), pour 1 cup white vinegar down line, wait 30 minutes, flush with water, verify water drains freely outside

Texas Tip: Texas humidity produces 5-20 gallons of condensate daily—drain clogs are the #1 summer service call

Check Refrigerant Line Insulation

Medium 15 minutes $10-$20 for insulation

Why: Damaged insulation reduces efficiency and causes condensation

How: Locate copper lines running from outdoor to indoor unit, inspect foam insulation for cracks, gaps, or deterioration, replace damaged sections with foam pipe insulation

Texas Tip: UV damage is common in Texas sun—insulation often deteriorates within 5-7 years

Test Carbon Monoxide Detectors

High 10 minutes Free (batteries $5)

Why: If you have gas appliances, CO risk increases with closed windows

How: Press test button on each detector, replace batteries if needed, verify expiration date (replace after 5-7 years)

Texas Tip: Homes with gas furnaces should test CO detectors before switching to AC-only operation

What Professionals Check During a Tune-Up

A proper tune-up takes 45-90 minutes and includes these critical checks that require professional tools and training.

Clean Evaporator Coil

Critical for efficiency

Indoor coil collects dust, mold, and debris that reduces heat transfer

If skipped: 15-30% efficiency loss, frozen coils, compressor damage

Clean Condenser Coil

Critical for efficiency

Outdoor coil needs chemical cleaning beyond garden hose rinsing

If skipped: High head pressure, compressor overheating, premature failure

Check Refrigerant Charge

Critical for cooling

Measure pressures and temperatures to verify proper charge level

If skipped: Poor cooling, frozen coils, compressor damage, high bills

Test Electrical Connections

Safety and reliability

Tighten terminals, measure amp draw, check for damaged wires

If skipped: Fire hazard, intermittent failures, component damage

Inspect Capacitor

Reliability

Measure capacitance and check for swelling or leaking

If skipped: Hard starts, compressor won't run, motor burnout

Check Contactor

Reliability

Inspect contact surfaces for pitting, arcing, or wear

If skipped: System won't start, electrical arcing, fire risk

Lubricate Motors

Longevity

Oil port lubrication on older motors (many newer motors are sealed)

If skipped: Bearing failure, motor burnout, expensive repairs

Clear Drain Line Professionally

Prevents water damage

Vacuum line, treat with biocide, verify float switch operation

If skipped: Water damage, mold growth, system shutdowns

Verify Thermostat Calibration

Comfort and efficiency

Compare thermostat reading to actual temperature, adjust if needed

If skipped: Incorrect cycling, uncomfortable temperatures

Measure Temperature Differential

Performance verification

Supply air should be 15-20°F cooler than return air

If skipped: Undiagnosed problems that worsen over summer

Inspect Ductwork

Efficiency

Check accessible ducts for leaks, disconnections, and insulation damage

If skipped: 20-30% cooling loss in unconditioned spaces

Test Safety Controls

Safety

Verify high-pressure switch, low-pressure switch, and safety limits

If skipped: Equipment damage, safety hazards

Texas-Specific Spring Challenges

Texas spring brings unique challenges that affect your HVAC system.

Oak Pollen Season

February-April

Impact: Coils clog 2-3x faster, filters need more frequent changes

Solution: Clean outdoor coils monthly, change filters every 30 days during pollen season

Cedar Fever Aftermath

December-February residue

Impact: Allergens trapped in system over winter

Solution: Have indoor coil cleaned, consider UV light installation

Humidity Returns

March-April

Impact: Mold growth risk increases, drain line clogs more likely

Solution: Clean drain line before humidity season, verify float switch works

Sudden Temperature Swings

March-April

Impact: May need heating and cooling same week

Solution: Verify system switches between modes properly

Outdoor Unit Damage

Post-winter inspection

Impact: Hail, freezes, and debris accumulation over winter

Solution: Visual inspection of fins, refrigerant lines, and electrical

Cost: Maintenance vs. Emergency Repairs

The math is clear: preventative maintenance costs a fraction of emergency repairs.

Professional Tune-Up

Preventative: $89-$150
Emergency: N/A
Potential Savings: Baseline investment

Dirty Coil (Not Cleaned)

Preventative: Included in tune-up
Emergency: $150-$400 emergency cleaning + efficiency loss
Potential Savings: $200-$500/year

Capacitor Failure

Preventative: $15-$25 if caught early
Emergency: $150-$300 emergency call + part
Potential Savings: $125-$275

Refrigerant Leak

Preventative: Caught early, plan repair
Emergency: $500-$1,500 emergency + recharge
Potential Savings: Avoided system damage

Drain Line Clog

Preventative: Included in tune-up
Emergency: $150-$250 + water damage
Potential Savings: $150-$5,000+

Compressor Failure

Preventative: Prevent with proper maintenance
Emergency: $1,500-$3,000 or system replacement
Potential Savings: Years of system life

First-Use Test Procedure

Before calling for service, test your system using this step-by-step procedure.

1

Check thermostat batteries

Replace if old or if display is dim

2

Set to cooling mode

Switch from heat or auto to cool

3

Set temperature 5°F below room temp

This should trigger system to start

Warning: Don't test if outdoor temp is below 60°F

4

Listen for outdoor unit startup

Should hear compressor and fan within 30 seconds

Warning: No startup = potential problem

5

Feel air at supply vents

Air should be noticeably cool within 5 minutes

Warning: Warm air only = refrigerant or compressor issue

6

Let system run 15-20 minutes

Check for unusual noises, smells, or water leaks

Warning: Burning smell = turn off and call professional

7

Check outdoor unit

Fan spinning, no unusual noises, no ice formation

Warning: Ice or frost = low refrigerant or airflow problem

8

Verify drain line

Water should drip from condensate drain outside

Warning: No drip after 20 minutes = potential clog

Common Problems Found During Spring Inspections

Here's what technicians commonly discover and what repairs typically cost.

Dirty Evaporator Coil

45% of systems

Symptoms: Reduced airflow, frozen coil, poor cooling

Cause: Normal dust accumulation, especially with pets or poor filtration

Fix: Professional chemical cleaning ($100-$200)

Low Refrigerant

15-20% of systems

Symptoms: Warm air, ice on coils, long run times

Cause: Leaks at fittings, coils, or service valves

Fix: Leak repair ($200-$800) + recharge ($150-$400)

Weak Capacitor

20% of systems over 5 years

Symptoms: Slow startup, humming, intermittent operation

Cause: Heat degradation (Texas heat accelerates failure)

Fix: Replacement ($75-$200 including labor)

Dirty Condenser Coil

35% of systems

Symptoms: High energy bills, compressor cycling off, reduced cooling

Cause: Pollen, cottonwood seeds, grass clippings

Fix: Professional cleaning ($75-$150)

Clogged Drain Line

25% of systems

Symptoms: Water around indoor unit, musty smell, humidity issues

Cause: Algae and biofilm buildup in high-humidity environment

Fix: Clearing and treatment ($75-$150)

Thermostat Issues

10% of systems

Symptoms: Wrong temperature reading, no response, erratic cycling

Cause: Dead batteries, poor placement, age

Fix: Battery replacement or new thermostat ($50-$300)

Signs You Need More Than a Tune-Up

Sometimes maintenance reveals that bigger decisions are needed.

System is 15+ years old

Approaching end of lifespan, tune-up may reveal replacement is smarter

Action: Get tune-up assessment plus replacement estimate

R-22 refrigerant system

Refrigerant is phased out, leaks are very expensive to fix

Action: Plan replacement—R-22 repairs rarely make financial sense

Multiple repairs last summer

System reliability is declining, more failures likely

Action: Discuss repair vs. replace with technician

Energy bills climbing yearly

System efficiency degrading despite maintenance

Action: Get efficiency assessment, compare to new system costs

Rooms don't cool evenly

May need duct repairs, zoning, or properly sized replacement

Action: Request duct inspection and Manual J load calculation

Strange noises getting worse

Mechanical components failing, potential for cascading damage

Action: Don't delay—noises usually indicate imminent failure

Why Spring Maintenance Pays Off

95% of summer breakdowns are preventable with spring maintenance
5-15% efficiency improvement from clean coils and proper refrigerant charge
50%+ savings on service costs vs. emergency summer repairs
Same-day service in spring vs. 2-7 day waits in summer

Upgrading this year? Review our HVAC buying guide and available rebates and tax credits.

Frequently Asked Questions

When should I schedule spring AC maintenance in Texas?

February through March is ideal for Texas homeowners. You'll beat the spring rush, have excellent technician availability, and get normal pricing. April is still good, May is last chance before summer rates and wait times. By June, you'll face 2-7 day wait times and emergency pricing.

How much does a spring AC tune-up cost in North Texas?

Professional tune-ups typically cost $89-$150 in North Texas. This includes coil cleaning, refrigerant check, electrical testing, drain line clearing, and comprehensive inspection. Avoid extremely cheap offers ($39-$49)—they often upsell aggressively or skip important checks.

What's included in a professional AC tune-up?

A comprehensive tune-up includes: cleaning evaporator and condenser coils, checking refrigerant levels and pressures, testing electrical connections and components (capacitor, contactor), clearing and treating the drain line, verifying thermostat calibration, measuring temperature differential, inspecting ductwork, and testing safety controls. Service should take 45-90 minutes.

Can I do spring AC maintenance myself?

Homeowners can handle several tasks: replacing filters, clearing debris from outdoor unit, rinsing condenser coils with a garden hose, cleaning vents, pouring vinegar down the drain line, and testing system operation. However, professional tasks—checking refrigerant, testing electrical components, and cleaning evaporator coils—require specialized tools and EPA certification.

How often should I change my filter in spring?

During Texas spring (February-April), change filters every 30 days due to heavy pollen. Oak pollen season is particularly intense and can clog filters quickly. Once pollen season passes, you can extend to every 60-90 days depending on filter type and household factors (pets, allergies, etc.).

Why is spring maintenance more important in Texas?

Texas AC systems run 6-8 months continuously during our long cooling season—far more than northern states. This extended runtime means more wear, more condensate production (drain clog risk), and more debris accumulation. Systems that fail in July face 100°F+ heat and 2-7 day wait times for repair.

What temperature should I test my AC in spring?

Test your AC when outdoor temperatures are above 60°F. Most air conditioners have a low-ambient lockout that prevents the compressor from running when it's too cold. In Texas, most days from mid-March onward are warm enough for testing.

How do I clear my AC drain line for spring?

Locate the drain line (PVC pipe near your indoor unit), pour 1 cup of white vinegar down the line, wait 30 minutes for it to break down buildup, then flush with water. Verify water flows freely from the outdoor drain point. If water backs up or drains slowly, the line needs professional clearing.

Should I cover my AC unit in winter and uncover in spring?

Most HVAC professionals advise against covering AC units. Covers can trap moisture, encourage rust, and create homes for pests. Units are designed for outdoor exposure. If you do cover, only cover the top and remove it before any use—running a covered unit causes serious damage.

What's the most common spring AC problem in Texas?

Clogged drain lines are the #1 spring service call in Texas. Our high humidity produces 5-20 gallons of condensate daily, and algae/biofilm grows in the drain during winter when the system sits idle. This causes water leaks, system shutdowns, and potential water damage.

How long should my AC take to cool the house after first spring use?

A properly functioning AC should noticeably cool your home within 15-30 minutes of starting. You should feel cold air at vents within 5 minutes. If the system runs for an hour without cooling, or if air at vents isn't cold, there's a problem requiring professional diagnosis.

Is it worth getting a tune-up on an old AC system?

Yes, with caveats. For systems 10-15 years old, tune-ups help maximize remaining life. For systems 15+ years old or using R-22 refrigerant, use the tune-up as a diagnostic opportunity—have the technician assess overall condition and provide a replacement estimate so you can make an informed decision before summer emergencies.

Schedule Your Spring Tune-Up

Beat the summer rush—book your AC maintenance now while availability is excellent.

Need help? I'm here!