Indoor Air Quality in Fresno and Madera, CA

Indoor air quality plays a major role in your home’s comfort, energy efficiency, and overall health. At Purl's Sheet Metal & Air Conditioning, we provide proven solutions to help Central Valley homeowners reduce allergens, control humidity, and breathe cleaner air year-round. From high-efficiency air filters and purifiers to whole-home humidifiers and ventilation systems, we tailor our services to your specific needs. Our commitment to quality and long-term comfort is what sets us apart:

• NATE and EPA-Certified Technicians
• Quality Is the Cornerstone of Our Success
• Serving the Central Valley Since 1952

Whether you're concerned about dust, moisture, or airborne pollutants, our expert team is ready to help improve your indoor environment. When you want healthier air and expert care, trust Purl's Sheet Metal & Air Conditioning to deliver dependable solutions backed by decades of experience.

Contact us today to schedule indoor air quality services with one of our professional technicians.

How to Tell If Your Home Has Poor Indoor Air Quality

Poor indoor air quality can affect your health, comfort, and overall well-being—often without you realizing it. At Purl's Sheet Metal & Air Conditioning, we help homeowners in Fresno, Madera, and the surrounding Central Valley detect and resolve air quality issues using proven solutions tailored to your home. Here are some of the most common signs that your indoor air may need attention:

• Frequent allergy symptoms such as sneezing, coughing, itchy eyes, or congestion—especially when you’re indoors—may indicate airborne allergens like dust, pet dander, pollen, or mold.
• Persistent musty or stale odors can suggest mold growth, poor ventilation, or trapped pollutants from household cleaners, smoke, or cooking.
• Increased dust accumulation on vents, surfaces, and furniture may signal a clogged air filter, leaky ductwork, or an underperforming HVAC system.
• Uneven temperatures or frequent HVAC cycling could mean your system is struggling to maintain airflow or circulation, which directly affects indoor air quality.
• Visible mold or mildew around vents, walls, or windows is a red flag for excessive moisture and poor air filtration.
• Worsening symptoms in sensitive individuals such as children, seniors, or those with asthma or respiratory issues may indicate high levels of indoor pollutants.
• Recent renovations or new furnishings can introduce volatile organic compounds (VOCs) from paints, adhesives, flooring, or furniture, which linger in the air without proper filtration or ventilation.

If you notice any of these signs, your home may benefit from a professional indoor air quality assessment. At Purl's Sheet Metal & Air Conditioning, we offer comprehensive IAQ solutions including high-efficiency air purifiers, whole-home humidifiers and dehumidifiers, upgraded filtration systems, and enhanced ventilation to improve your comfort and protect your health.

Contact Purl's Sheet Metal & Air Conditioning today to schedule your indoor air quality evaluation and breathe easier with clean, healthy air throughout your home.

What Are the Benefits of UV Germicidal Lights?

UV germicidal lights are a powerful, proven solution for improving indoor air quality. Installed inside your HVAC system, these ultraviolet lights work continuously to neutralize harmful microorganisms such as mold spores, bacteria, and viruses. At Purl's Sheet Metal & Air Conditioning, we provide professional installation of UV germicidal lights for homeowners in Fresno, Madera, and throughout the Central Valley—helping families enjoy cleaner, healthier air every day.

Here are the key benefits of adding UV germicidal lights to your HVAC system:

• Kills airborne pathogens – UV light destroys the DNA of viruses, bacteria, and mold spores as air circulates through your HVAC system, reducing the risk of illness and infection.
• Prevents mold growth inside the system – UV lights target moist areas like coils and air handlers, preventing mold and mildew buildup that can impact system performance and air quality.
• Improves HVAC efficiency – By keeping coils clean and free of microbial growth, UV lights help your system transfer heat more effectively, which reduces energy consumption.
• Enhances air quality for sensitive individuals – UV treatment helps eliminate allergens and microbial particles, making it a valuable upgrade for households with asthma, allergies, or compromised immune systems.
• Low maintenance and long lifespan – UV lights typically require only annual bulb replacement and operate silently without interfering with your HVAC system’s function.
• Supports a whole-home IAQ strategy – When paired with air filters, humidifiers, and ventilation systems, UV lights offer an extra layer of protection for your family’s comfort and health.

UV germicidal lights are an excellent choice for homeowners looking to take their indoor air quality to the next level. At Purl's Sheet Metal & Air Conditioning, our skilled technicians can recommend the right system for your home and provide expert installation to ensure maximum effectiveness.

Contact Purl's Sheet Metal & Air Conditioning today to schedule a consultation and discover how UV germicidal lights can improve the safety and cleanliness of your indoor air.

How Often Should You Replace Your Air Filters?

Replacing your air filters regularly is one of the most important—and easiest—ways to maintain good indoor air quality and keep your HVAC system running efficiently. At Purl's Sheet Metal & Air Conditioning, we help homeowners in Fresno, Madera, and throughout the Central Valley stay on top of air filter maintenance as part of our comprehensive indoor air quality services.

In general, most standard air filters should be replaced every 1 to 3 months. However, the ideal replacement schedule can vary depending on several key factors:

• Type of filter – Basic fiberglass filters usually need to be changed monthly, while pleated or high-efficiency filters can last up to 90 days.
• Allergies or respiratory conditions – If anyone in your household suffers from allergies, asthma, or other breathing issues, replacing filters more frequently—every 30 to 45 days—is often recommended.
• Pets in the home – Pet hair and dander can clog filters faster. Homes with one or more pets should consider changing filters every 1–2 months.
• Home size and HVAC usage – Larger homes or households that run their HVAC systems continuously may require more frequent filter changes.
• Local air quality – In areas with high pollen, dust, or smoke—like during wildfire season in the Central Valley—filters may need to be replaced more often.

Neglecting to change your air filter can lead to a range of problems, including reduced airflow, increased energy consumption, and excess strain on your HVAC system. Dirty filters also allow allergens, dust, and pollutants to recirculate through your home, impacting your indoor air quality and comfort.

At Purl's Sheet Metal & Air Conditioning, we recommend checking your filter monthly and replacing it when it appears dirty or clogged. We also offer professional maintenance services that include filter replacement, system inspections, and indoor air quality assessments to ensure your HVAC system is performing at its best.

Contact Purl's Sheet Metal & Air Conditioning today to schedule your next filter replacement or indoor air quality service and keep the air in your home clean and healthy.

The Best Air Purifiers for Allergies & Dust Control

If you or someone in your household suffers from allergies or sensitivity to dust, installing the right air purifier can make a significant difference in your indoor comfort and health. At Purl's Sheet Metal & Air Conditioning, we help homeowners in Fresno, Madera, and across the Central Valley find air purification solutions tailored to their unique needs. With so many options on the market, it’s important to understand which air purifiers are most effective for reducing allergens and controlling dust.

The best air purifiers for allergy relief use HEPA (High-Efficiency Particulate Air) filters, which are designed to capture 99.97% of particles as small as 0.3 microns. This includes common allergens such as dust mites, pollen, pet dander, and mold spores. Whole-home air purifiers that integrate with your HVAC system offer a powerful and consistent solution, filtering the air throughout your entire house rather than just one room.

Another excellent option is an electronic air cleaner, which uses electrostatic technology to trap airborne particles. These systems are washable, long-lasting, and especially effective at removing fine dust and other small irritants from the air. For homeowners looking to take air purification a step further, some advanced systems also include UV germicidal lights that help kill bacteria, viruses, and mold spores—adding another layer of protection for allergy sufferers.

It’s important to choose a purifier that matches the size of your home and is properly installed by a professional. At Purl's Sheet Metal & Air Conditioning, our technicians assess your HVAC system and recommend compatible purification products that won’t restrict airflow or compromise performance. We also offer regular maintenance and filter replacement services to ensure your system continues operating at peak efficiency.

If allergies, asthma, or excessive dust are affecting your indoor air quality, the right air purifier can make your home cleaner, healthier, and more comfortable.

Contact Purl's Sheet Metal & Air Conditioning today to schedule an indoor air quality consultation and discover the best air purification solutions for your home.

Breathe Easier With Our Indoor Air Quality Services

The air inside your home can have a direct impact on your health, comfort, and overall well-being. In fact, indoor air can be up to five times more polluted than outdoor air due to trapped dust, allergens, mold spores, volatile organic compounds (VOCs), and other contaminants. At Purl's Sheet Metal & Air Conditioning, we offer a full range of indoor air quality (IAQ) services for homeowners in Fresno, Madera, and throughout the Central Valley—designed to help you breathe cleaner, healthier air every day.

Our IAQ services begin with a detailed assessment of your home’s air and HVAC system. From there, we offer personalized recommendations using advanced products that target your specific concerns. Whether you’re dealing with allergies, respiratory issues, dry air, or lingering odors, our solutions can drastically improve the quality of your indoor environment.

We install and service:

• High-efficiency air purifiers to trap dust, pollen, pet dander, and airborne allergens
• Whole-home humidifiers and dehumidifiers to maintain optimal moisture levels
• UV germicidal lights to eliminate bacteria, viruses, and mold spores in your HVAC system
• Upgraded filtration systems, including HEPA filters and electronic air cleaners
• Ventilation solutions to remove stale air and introduce fresh outdoor air

All systems are installed by our NATE and EPA-certified technicians and integrated seamlessly with your existing HVAC setup. We also provide ongoing maintenance to ensure your IAQ products continue to perform efficiently over time.

At Purl's Sheet Metal & Air Conditioning, we understand that every home and family is different. That’s why we tailor each indoor air quality solution to meet your unique needs, lifestyle, and budget. With over 70 years of trusted service in the Central Valley, our team is committed to improving your indoor comfort with expert care and lasting results.

Contact Purl's Sheet Metal & Air Conditioning today to schedule your indoor air quality consultation and start breathing easier in every room of your home.