Spring HVAC maintenance isn’t just a “nice-to-have.” It’s the best time to catch small issues before they become expensive ones—like a clogged condensate drain, a weak capacitor, dirty coils, or airflow restrictions that can cause your AC to run longer and work harder.

A thorough professional check typically includes thermostat verification, electrical checks, condensate drain inspection, airflow and blower checks, coil cleaning, and verifying refrigerant charge where appropriate—items that ENERGY STAR lists as part of a typical maintenance check-up. 

1) Replace or clean your HVAC filter (the simplest high-impact task)

Check your filter monthly and change it when it’s dirty. ENERGY STAR notes that a dirty filter can increase energy costs and even damage equipment, and it specifically recommends inspecting/cleaning/changing filters once a month. 

2) Clear the outdoor unit (condenser) and give it breathing room

Remove leaves, tumbleweeds, cottonwood fluff, and wind-blown debris around the condenser. Keep at least a couple feet of clearance so the unit can move air efficiently. If your cottonwood season is intense, plan a quick visual check weekly during peak shedding.

3) Test your thermostat before the first warm week

Switch the system to Cool, set the temperature a few degrees below room temperature, and confirm the outdoor unit starts and cool air comes from the vents within a few minutes. If you have a smart thermostat, confirm schedules and make sure the fan is set to Auto (unless your technician recommended otherwise for your setup).

4) Do a quick airflow walk-through indoors

Make sure supply vents aren’t blocked by rugs, furniture, or drapes. Confirm return grilles are open and unobstructed. Poor airflow is one of the most common reasons an AC struggles—or freezes up—when the weather turns warm.

5) Watch for condensate drain problems (and prevent water damage)

When your AC runs, it pulls moisture from the air. That water should drain safely. A clogged drain can lead to overflow, shut-offs, or water damage. ENERGY STAR lists checking/inspecting the condensate drain as a key part of a maintenance check-up. 

If you’ve had drain clogs before, ask your technician what’s safe for your specific equipment. Avoid DIY chemicals unless a pro confirms compatibility—some setups are more sensitive than others.

6) Schedule a professional spring tune-up (before the rush)

A qualified HVAC technician can clean coils, verify safe electrical operation, measure performance, and confirm the system is starting/stopping correctly. ENERGY STAR notes that dirty coils can reduce cooling ability and increase energy costs, and that improper refrigerant levels can reduce efficiency and shorten equipment life. 

If your system is older (or you’ve needed frequent repairs), it’s also a good time to ask about efficiency upgrades. ENERGY STAR suggests that if cooling equipment is more than 10 years old or needs frequent repairs, it may be time to consider replacement. 

Helpful local service links from Absolute Comfort

If you want a pro to handle the heavy lifting, Absolute Comfort offers maintenance and repairs for both heating and cooling systems across Colorado Springs and the Pikes Peak region.

Consider an indoor air quality upgrade if anyone in the home has allergies

Higher-efficiency filtration and whole-home air purification can help reduce airborne dust and irritants (as long as your system can handle the airflow requirements). For guidance on improving filtration, EPA notes that upgrading HVAC filters to the highest efficiency compatible with the system and checking filter fit can reduce bypass. 

Explore Air Purification options

Air Filters & Purifiers for improved filtration

Humidifier Services for dry-season comfort

If you have boilers or radiant heat, spring is still a smart planning window

Many homeowners wait until fall to think about heating. Spring is a calmer season to plan upgrades, evaluate comfort issues, and schedule maintenance before the first hard freeze.

Boiler installation, repair & maintenance

Radiant Heating Systems (electric & hydronic)

How often should I schedule professional HVAC maintenance?

Many homes benefit from twice-yearly check-ups: AC in spring and heating in fall. ENERGY STAR recommends annual pre-season check-ups for heating and cooling equipment.

How often should I change my air filter?

Check monthly. Replace at least every three months, or sooner if it looks dirty (especially with pets, allergies, renovations, or heavy HVAC use). ENERGY STAR advises checking filters monthly and changing them at least every three months (or when dirty). 

Why does my AC run but not cool well on the first warm day?

Common causes include a dirty filter, restricted airflow, dirty coils, thermostat issues, or refrigerant-related problems. A spring tune-up helps identify these early—ENERGY STAR specifically calls out coil cleanliness, airflow, and refrigerant level as major efficiency factors. 

Is a higher MERV filter always better?

Not always. Higher-efficiency filters can improve filtration, but they may also increase airflow resistance if your system wasn’t designed for them. EPA emphasizes upgrading to the highest efficiency filter that’s compatible with the system and ensuring a good fit to reduce bypass. When in doubt, ask a technician to confirm what your blower and ductwork can support. 

When should I consider replacing my AC instead of repairing it?

If your system is over 10 years old and needs frequent repairs, it may be worth discussing replacement options. ENERGY STAR notes that older equipment or frequent repairs can be a sign it’s time to consider an upgrade.