Common Questions About HVAC Systems and Maintenance

Understanding your heating and cooling system doesn’t have to be complicated. As the longest-running locally owned and operated HVAC company in Cochise County, we’ve heard every question imaginable about residential and commercial climate control. Over our 39 years of experience serving Hereford, Sierra Vista, Benson, Bisbee, Tombstone, Sonoita & Douglas, AZ, we’ve compiled answers to the questions homeowners ask most frequently. Whether you’re dealing with an unexpected breakdown or planning routine maintenance, having the right information helps you make informed decisions about your comfort system.

The complexity of modern HVAC equipment can seem overwhelming, but knowing the basics about how your system operates, when it needs attention, and what maintenance tasks matter most will save you money and extend equipment life. We believe in empowering our customers with knowledge, which is why we offer free second opinions to ensure you’re getting accurate information about your system’s condition and repair needs.

How Often Should I Change My Air Filter?

Air filter replacement frequency depends on several factors including filter type, household conditions, and system usage patterns. Standard one-inch fiberglass filters typically need replacement every 30 days, while pleated filters can last 60 to 90 days under normal conditions. However, homes with pets, smokers, or residents with allergies often require more frequent changes. During peak cooling and heating seasons when your system runs continuously, filters accumulate debris faster and need more attention.

Filter maintenance directly impacts system efficiency, indoor air quality, and equipment longevity. A clogged filter forces your system to work harder, increasing energy consumption by up to 15% and potentially causing premature component failure. We recommend checking your filter monthly and establishing a replacement schedule based on its appearance rather than relying solely on manufacturer recommendations. High-efficiency filters, while excellent for air quality, create more resistance and may need changing more frequently than standard filters.

What Temperature Should I Set My Thermostat?

Optimal thermostat settings balance comfort with energy efficiency, and the Department of Energy recommends 78 degrees Fahrenheit during summer when you’re home and 68 degrees during winter heating season. Adjusting these temperatures by 7 to 10 degrees for eight hours daily can reduce annual heating and cooling costs by approximately 10%. Programmable and smart thermostats make these adjustments automatic, maximizing savings without sacrificing comfort when you need it most.

Your home’s specific characteristics influence ideal temperature settings. Factors like insulation quality, window efficiency, sun exposure, and humidity levels all affect how your home feels at different thermostat settings. As an exclusive Carrier and Bryant Dealer, we install advanced thermostats that learn your preferences and adjust automatically for optimal comfort and efficiency. Many customers find that gradually adjusting to slightly warmer summer temperatures or cooler winter settings helps them adapt while significantly reducing energy bills.

Why Is My System Making Strange Noises?

Unusual sounds from your HVAC system often indicate developing problems that require professional attention.

• Banging or clanking typically suggests loose or broken components within the blower assembly or compressor
• Squealing or screeching usually indicates belt problems or bearing failure in motors
• Clicking sounds during startup might signal electrical issues or relay problems
• Hissing noises often point to refrigerant leaks or ductwork problems
• Rattling sounds commonly result from loose panels or debris in the system

Ignoring these warning signs can lead to complete system failure and expensive repairs. Our factory-trained professionals diagnose sound-related issues quickly, often preventing minor problems from becoming major expenses. With our fleet of trucks stationed throughout Southern Arizona, we respond promptly to service calls, minimizing downtime and discomfort.

When Should I Replace My HVAC System?

Most heating and cooling systems last 15 to 20 years with proper maintenance, though several factors indicate when replacement makes more financial sense than continued repairs. If your system requires frequent repairs, especially if annual repair costs exceed 50% of replacement cost, upgrading becomes the economical choice. Rising energy bills despite regular maintenance, inconsistent temperatures between rooms, and excessive humidity problems also signal that your system can no longer meet your home’s demands efficiently.

Modern HVAC systems offer dramatically improved efficiency compared to units manufactured even ten years ago. Current Energy Star certified systems use up to 30% less energy than older models, providing significant long-term savings that offset replacement costs. Additionally, newer systems feature advanced humidity control, quieter operation, better air filtration, and smart technology integration that enhances both comfort and convenience while reducing environmental impact through improved efficiency ratings.