Summer in Washington can push your HVAC system to its limits. As outdoor temperatures rise, your air conditioner works harder to maintain a comfortable indoor climate. If it’s not running efficiently, you could be facing breakdowns, high energy bills — or worse. At Apex Air, we want to help you stay cool and avoid unnecessary disruptions. Let’s explore some of the most common AC problems in summer — and what you can do to stop them before they start.

1. Clogged Air Filters

Dust, pollen and other particles can quickly clog your air filter, reducing airflow and forcing your AC system to work harder. Left unchecked, this can reduce efficiency, increase your energy bill, and cause wear and tear on your system’s components.

Prevention Tip:
Check your air filters every 30–90 days and replace them as needed. This small maintenance task can improve performance and extend the life of your HVAC system.

2. Low or Leaking Refrigerant

Refrigerant is what helps your system absorb and remove heat from your home. If there’s a leak or the refrigerant level drops, you may notice poor cooling performance, warm air blowing from vents or even ice forming on your evaporator coil.

Prevention Tip:
Schedule annual maintenance to check for refrigerant issues. Only a certified HVAC technician can safely handle refrigerant and recharge your system to factory specs.

3. Dirty Condenser Coils

The outdoor unit’s condenser coils release the heat your system pulls from inside. If they’re coated in dirt, leaves or grass clippings, the system can’t expel heat effectively — which forces your AC to run longer and harder.

Prevention Tip:
Clear debris away from the outdoor unit and rinse coils gently with a garden hose. Schedule seasonal cleanings to ensure optimal performance.

4. Electrical Component Failures

Summer heat can place a heavy load on your system’s electrical parts. Capacitors, contactors and circuit boards may overheat, leading to AC short cycling, inconsistent cooling or a total system failure.

Prevention Tip:
A pre-season inspection from Apex Air can identify worn or overheating components before they lead to bigger problems.

5. Thermostat Issues

A malfunctioning or misconfigured thermostat can throw off your entire HVAC system. You might experience uneven temperatures, short cycling or an AC that simply won’t turn on.

Prevention Tip:
Place thermostats away from heat sources like windows or appliances, and consider upgrading to a smart or programmable model to optimize cooling and energy efficiency.

6. Clogged Drain Lines

Your air conditioner removes moisture from the air, which drains through a condensate line. If that line clogs, you could see water pooling around the unit or signs of mold growth.

Prevention Tip:
Pour vinegar, followed by water, into the drain line access point once a month, and keep an eye out for damp areas near your indoor AC unit. Also be sure to have the drain line flushed during annual maintenance.

7. Weak Airflow

Weak airflow is one of the most common AC problems in summer. It can stem from a variety of causes including clogged filters, duct obstructions or a struggling blower motor.

Prevention Tip:
Change filters regularly, keep vents unblocked and schedule duct cleaning if you suspect buildup is restricting airflow.

8. Excessive Humidity

Washington summers can be humid, and your AC might not be enough to keep indoor moisture in check. High humidity makes your home feel hotter, triggers allergies and encourages mold growth.

Prevention Tip:
Consider installing a whole-home dehumidifier to reduce indoor humidity and take stress off your AC system.

9. Unusual Noises or Smells

Clanking, squealing or buzzing sounds could point to loose components or failing motors. Musty or burning smells may indicate mold or electrical issues.

Prevention Tip:
Never ignore strange noises or odors. Schedule an inspection to diagnose the issue before it becomes a serious (and costly) repair.

Prevent Problems Before They Start

Routine maintenance is the key to avoiding many of these common AC problems in Washington summers. A professional tune-up before the season begins can identify small issues, boost efficiency and keep your system running smoothly when you need it most.

Stay Ahead of Summer HVAC Trouble

Your HVAC system should bring you relief — not headaches. If you’re experiencing any of these issues, or your system hasn’t received summer maintenance, contact the experts at Apex Air today! We’re proud to serve homeowners throughout Washington with trusted, reliable cooling solutions to keep you comfortable all season long.

When it’s time to upgrade your air conditioner or heat pump, one of the most important numbers to understand is the SEER2 rating. This energy efficiency metric is essential for determining not only how well your system will cool your home, but also how much it will cost you to run.

At Apex Air, we know choosing the right SEER2 rating can make a big difference in Washington homeowners’ monthly utility bills, home comfort and even rebate eligibility. Here’s everything you need to know:

What Does SEER2 Rating Actually Mean?

SEER2 stands for Seasonal Energy Efficiency Ratio 2, and it measures how efficiently an air conditioner or heat pump removes heat from your home during a typical cooling season. The higher the SEER2 rating, the less energy the unit uses to keep your home comfortable.

As of January 2023, SEER2 replaced the original SEER rating system and uses more in-depth testing methods to better reflect real-world performance. It’s similar to how your car might be tested in both city and highway conditions to determine fuel efficiency.

So, What Is a Good SEER2 Rating?

The answer depends on your climate, budget, and how often you use your HVAC system. For Washington State, where summers are generally mild but can occasionally spike, a SEER2 rating of 16–18 is considered a solid middle ground. This range balances cost, efficiency and comfort for most homes in the region.

If you’re aiming for maximum efficiency, units with SEER2 ratings above 20 offer exceptional energy savings, especially when paired with features like variable-speed compressors and smart thermostats.

Here’s a quick breakdown:

• 14 SEER2: Meets minimum federal standards; budget-friendly, but less efficient.
• 16–18 SEER2: Ideal for Washington’s climate; great balance of cost and performance.
• 20+ SEER2: High-efficiency systems with advanced features and the best long-term energy savings.

SEER2 vs. EER2: What’s the Difference?

While SEER2 measures average performance over a season, EER2 (Energy Efficiency Ratio 2) focuses on how well a system performs at peak temperatures — like a 95 F summer day. For Washington homeowners, SEER2 is usually more relevant, but if you frequently experience extreme summer heat, EER2 may also be worth considering.

Benefits of a High SEER2 Rating

1. Lower Energy Bills
   More efficient systems use less electricity to cool your home, leading to monthly savings that add up over time.
2. Improved Indoor Comfort
   Units with higher SEER2 ratings often include variable-speed motors and advanced humidity control for more consistent temperatures.
3. Environmental Impact
   Using less energy means reducing your carbon footprint and contributing to a more sustainable future.
4. Eligibility for Rebates
   To qualify for certain federal tax credits or Washington energy rebates, your system must meet minimum SEER2 thresholds. For example, heat pumps must be at least 16 SEER2, and air conditioners must be 17 SEER2 or higher.

Is a Higher SEER2 Rating Worth the Cost?

The answer depends on your long-term goals. Higher-efficiency systems cost more upfront but often pay for themselves through energy savings over 10 to 15 years. If you plan to stay in your home for a while — or want to boost resale value — investing in a high SEER2 unit is often worth it.

However, if you have a tight budget or rarely use your cooling system, a lower-SEER2 model may be more cost-effective.

Let Apex Air Help You Choose the Right System

At Apex Air, we specialize in helping homeowners across Vancouver and nearby Washington communities find HVAC systems that balance comfort, efficiency and cost.

Need expert guidance or a quote on a new high-efficiency HVAC system?
Contact us today to explore your options and find a cooling solution that fits your home and your budget.

Humidity might not be the first thing you think of when it comes to home comfort, but it plays a critical role in how your house feels and how well your body functions. Too much moisture in the air can leave your home feeling stuffy, drive up your energy bills, and contribute to health concerns ranging from allergies to asthma flare-ups. Too little and you could be dealing with dry sinuses, cracked skin and a greater risk of viral infections.

At Apex Air, we understand the unique challenges of the damp Pacific Northwest climate in maintaining balanced indoor air. Let’s take a closer look at why humidity matters, the symptoms of high humidity in home environments, and how HVAC solutions can help restore balance.

What Is High Humidity, and Why Does It Matter Indoors?

Humidity refers to the amount of water vapor in the air. High humidity means the air is holding more moisture than usual, making it feel warmer and heavier. Your body works harder to stay cool in high humidity because sweat doesn’t evaporate effectively. That’s what causes that sticky, overheated feeling. Indoors, excess humidity doesn’t just make you uncomfortable; it alters air quality, encourages mold growth and makes your HVAC system work overtime.

Signs of High Humidity in Home Environments

Recognizing the signs of high humidity can help you address the problem before it leads to structural damage or health issues. Watch for these red flags:

• Condensation on windows and walls
• A musty or damp smell, especially in basements or closets
• Visible mold or mildew
• Warped wood or peeling paint
• Frequent allergy or asthma flare-ups
• Sticky or clammy indoor air
• Increased dust mite activity
• Higher-than-normal energy bills due to AC overuse

These signs of high humidity in home spaces should never be ignored. If you notice one or more, it’s time to consider moisture control strategies.

Health Effects of Poor Indoor Humidity

High humidity doesn’t just impact comfort; it can pose real health risks. Here are some symptoms of high humidity in your home:

• Asthma and COPD – Moist air is harder to breathe and may restrict airways.
• Allergies – Mold and dust mites thrive in humid environments.
• Respiratory infections – Viruses and bacteria spread more easily in poorly balanced indoor air.
• Skin conditions – High or low humidity can cause eczema or dry, cracked skin.
• Heat-related illnesses – When your body can’t cool itself, you’re at greater risk of dehydration, heat exhaustion or even heat stroke.

Humidity can also make medications less effective and strain the heart and kidneys in individuals with preexisting conditions.

How To Manage and Monitor Humidity in Your Home

Indoor humidity levels should ideally stay between 40% and 60%. Here are some ways to monitor and control it:

• Use a Hygrometer: This small device measures indoor humidity and can be found at most hardware stores.
• Install a Whole-Home Dehumidifier: Connected to your HVAC system, it helps keep moisture levels in check across your entire house.
• Schedule HVAC Maintenance: A clean, efficient system drains moisture properly. At Apex Air, we offer seasonal tune-ups that include drainage checks, filter replacement and airflow optimization.
• Ventilate Properly: Make sure bathrooms, kitchens and laundry areas are equipped with exhaust fans that send humid air outside.
• Seal Leaks and Insulate: Prevent outdoor humidity from creeping in through windows, doors and ductwork.

Don’t Let Humidity Compromise Your Comfort or Health

Whether you’re dealing with a musty basement or struggling to stay cool and comfortable during a humid Washington summer, Apex Air is here to help. If you’ve noticed any of the signs of high humidity in home settings, our HVAC professionals can assess your indoor air quality and recommend the right solution — from air purification to advanced dehumidification systems.

Take control of your home’s humidity today.

Whether you want to install a dehumidifier or improve the indoor air quality in your home, the pros at Apex Air are here to help. Schedule a consultation today.

Springtime is the best time to start preparing your air conditioner for the summer.

Performing your HVAC maintenance now, before you really need it, ensures your system will be operating smoothly and at peak efficiency to keep you cool and comfortable when the hot temps arrive. It’s also an opportunity to discover any minor issues and address them before they turn into serious problems requiring expensive repairs.

Unlock peak summer comfort & savings. Get our professional HVAC tips to ensure a cool, comfortable and worry-free summer for your home while maximizing efficiency and avoiding costly repairs.

Replace or Clean Air Filters

The air filters in your HVAC system are an important part of maintaining indoor air quality because they trap dust, pollen and other pollutants and keep them from circulating throughout your home. However, when they get dirty and clogged, they restrict airflow and force the system to work harder, reducing its efficiency, shortening its lifespan, and increasing energy consumption. That leads to higher bills. Replace disposable filters or clean reusable ones every 1–3 months, or more often in dusty environments. This simple task ensures optimal airflow and keeps your home’s air fresh and clean.

Clean the Indoor Unit

The part of your HVAC system that sits inside your house contains key components that need regular maintenance to keep the system running properly and efficiently. First, to be safe, shut off the power to the unit by flipping the system breaker switch to the off position. Then, remove the access panel and clean the evaporator coils with a foaming coil cleaner, and flush the drain pan and drain pipe with a bleach-water solution to prevent clogs and mold growth.

Inspect and Clean the Outdoor Unit

This is an important part of HVAC summer maintenance. The outdoor unit is prone to accumulating leaves, grass, trash and twigs, which block the free flow of air through the vents, decreasing efficiency and making the whole system work harder. Remove the grill and clean out debris both inside and outside the unit, and use a garden hose and coil cleaner to remove stubborn dirt and grime from the condenser coils. Make sure landscaping plants are trimmed back at least two feet away from the unit.

Straighten the Condenser Fins

The fins on the condenser are there to maximize the surface area to help dissipate heat more effectively and make the cooling process faster and more efficient.  They’re thin and fragile, bending easily, so you’ll usually find at least a few impacted areas. Bent fins obstruct airflow and reduce the ability of the coil to transfer heat, lowering efficiency and raising your utility bill. Use a fin comb, which you can buy at your local hardware store, to very carefully straighten bent fins.

Program Your Thermostat for Efficiency

A programmable or smart thermostat can help in reducing energy consumption by allowing you to regulate temperatures for different times of the day. For example, you can set it to automatically lower temps during the day when no one’s home, and raise them just before you return. Avoid drastic temperature changes that can put a strain on the system.

Check Coolant Lines and Ductwork

Check your refrigerant lines for missing or damaged insulation, and repair or replace as needed. Keep an eye out for any areas where leaks might develop. Also, inspect your ductwork for leaks and blockages. Loose seams and tears can be repaired with mastic sealant or professional-grade duct tape. It’s a good idea to consider professional maintenance in these areas as they will have a better eye for problems, and accessing ductwork is dirty and physically demanding work.

Test the System Before Peak Summer Heat

Once you’ve finished with your HVAC summer maintenance, you’ll want to put your system through its paces to make sure everything is working properly before the hot weather arrives. Turn the AC on and run it on high until you’re satisfied with its operation, listening for any unusual noises or other signs of a problem. This is good practice for the change of the seasons because you’ll basically go through the same routine when preparing your HVAC for winter.

Consider Professional Maintenance

While these maintenance tasks are adequate for preparing your HVAC for summer, it’s a good idea to have a pro conduct an inspection at least once a year (and to handle any maintenance you don’t feel comfortable with as a DIY project). They’ll do a more in-depth examination, checking refrigerant levels, cleaning hard-to-reach components as well as filters, coils and ducts, and optimizing system performance. A trained, licensed technician will be able to identify issues before they turn into major problems requiring costly repairs or replacement.

Your HVAC system warranty may also require professional maintenance for any claims to be valid. Consider scheduling a professional inspection before seasonal high-demand periods.

Want to make sure your home is ready for the summer heat? Contact Apex Air for a free estimate.

You rely on your HVAC system to keep your home comfortable all year long. Your heating and cooling system spends many hours in operation day in and day out, year after year. Even though these systems are built to handle a lot, the reality is, you’ll probably run into a problem eventually.

So, what are the most common culprits for HVAC malfunctions? We’ll break down the top 10 most common reasons for HVAC system problems and show you how proactive maintenance and smart habits can cut down on costly repairs.

It should also be noted that most of these issues can be avoided by having regular HVAC maintenance performed on your system by a professional, saving you money in the long run. Spot these 10 common HVAC problems and troubleshoot like a pro:

1. Unit Not Turning On

   Causes:

   • Dead thermostat batteries
   • Tripped circuit breaker
   • Wiring issues

   How To Avoid It

   If your thermostat uses batteries instead of being hardwired into your home electrical system, check them regularly, as low power can affect proper operation. Also inspect your circuit breakers periodically to make sure they’re not tripped. If you suspect faulty wiring is the culprit, call a professional immediately for an inspection and repair.

2. Poor Airflow

   Causes:

   • Dirty air filters
   • Clogged vents
   • Blocked ducts

   How To Avoid It

   This is the most common HVAC problem. Replace your air filters every 1-3 months to prevent airflow restriction, or more frequently in a dusty environment. Also, remove obstructions like grass, shrubs and limbs from around outdoor units and vents. Consider having your ducts cleaned to remove accumulated dust and debris.

3. Uneven Temperature Distribution

   Causes:

   • Poor insulation
   • Blocked vents
   • Lack of zoning control

   How To Avoid It

   Reinforce your home’s insulation where needed, especially around leak-prone areas like windows and doors, and consider installing dampers in your ductwork to allow you to regulate airflow into living spaces more precisely. For larger homes, think about installing a zoned HVAC system for a better temperature control in each room.

4. Strange Noises (Whining, Squealing or Rattling)

   Causes:

   • Loose components
   • Worn-out fan belts
   • Airflow obstructions

   How To Avoid It

   Of all HVAC maintenance issues, this is among the easiest to address. Keep moving parts well lubricated as per the instructions in your owner’s manual. Tighten any loose screws or bolts during routine inspections and replace fan belts that look worn or are squealing. Clean or replace air filters regularly to avoid strain on components that could cause noise issues.

5. HVAC Blowing Hot Air Instead of Cold

   Causes:

   • Dirty air filters
   • Compressor malfunctions
   • Low refrigerant levels

   How To Avoid It

   This is another issue that can be caused by dirty air filters, so clean or replace them when necessary. Hot air coming from your AC could also be a sign of a malfunctioning compressor. Be alert for unusual noises or vibration from the unit. Low refrigerant levels due to a leak may also be the culprit. Ice buildup on coils may indicate low refrigerant. In this case, it’s best to call a professional HVAC contractor for an inspection and repair.

6. Refrigerant Leaks

   Causes:

   • Corrosion in refrigerant lines
   • Poor installation practices
   • Wear and tear over time

   How To Avoid It

   Regularly check your refrigerant lines for visible leaks or residue. You can use a leak detector, available at hardware stores, or use soapy water for smaller leaks. Scheduling an annual inspection and maintenance can identify potential issues early to avoid costly future repairs.

7. Air Handler Malfunctions

   Causes:

   • Dirty filters
   • Motor problems
   • Faulty wiring

   How To Avoid It

   Poor airflow through your system is yet another one of those common furnace problems that can be caused by dirty air filters. But it could also be caused by the blower motor malfunctioning due to mechanical failure or faulty wiring. If it’s not a filter problem, you should call your local contractor to check it out — especially if you think your blower is covered under warranty.

8. Short Cycling (Turning Off Too Quickly)

   Causes:

   • Incorrectly sized HVAC system
   • Thermostat issues
   • Clogged air filters

   How To Avoid It

   A common cause of short cycling is a defective thermostat. Have it inspected and repaired or replaced if necessary. If short cycling persists, especially if you’re in a new home or you’ve made large renovations, check with your contractor to make sure you have the right-size HVAC system for your home.

9. Pilot Light Issues on Gas Furnaces

   Causes:

   • Dirty pilot components
   • Thermocouple malfunctions
   • Gas supply problems

   How To Avoid It

   Routinely clean around the pilot light area to prevent residue buildup that could interfere with ignition. Make sure gas valves are functioning properly and have a professional inspect the thermocouple during regular maintenance checks.

10. High Energy Bills Due to HVAC Issues

    Causes:

    • Poor maintenance practices
    • Dirty filters or coils
    • Inefficient components

    How To Avoid It

    Consider installing a programmable thermostat to cut down on energy use by tailoring temperature settings throughout the day. Staying on top of regular maintenance tasks mentioned above, like cleaning coils and replacing filters can significantly reduce energy consumption.

Notice any of these common HVAC problems happening with your system? Contact Apex Air today for a free estimate.