Air Conditioning frequently asked questions
1. How are heater and AC system capacities measured? HVAC systems are sized in BTUH (British Thermal Units per Hour) for heating and tons (12,000 BTU/hr) for cooling. Proper sizing ensures efficient performance and comfort.
2. What size HVAC system should I have? System size depends on home square footage, insulation, window type, number of occupants, and Arizona climate factors. A Manual J load calculation by a certified technician determines the right size — avoid over or undersizing.
3. How is efficiency measured? Cooling efficiency is rated by SEER (Seasonal Energy Efficiency Ratio), and heating efficiency is rated by AFUE (Annual Fuel Utilization Efficiency) or HSPF (Heating Seasonal Performance Factor) for heat pumps. Higher ratings mean better efficiency and lower utility costs.
4. How can I maximize my HVAC efficiency and lifespan? Schedule two tune-ups per year Replace filters every 1–3 months Keep outdoor units clean and clear Repair air leaks in ductwork Avoid frequent short-cycling
5. Is a higher-capacity system always better? No. Oversized systems short-cycle, lowering efficiency and increasing wear. Properly sized units provide steady comfort and longer lifespan.
6. How long should a typical HVAC cycle last? A cycle should run 15–30 minutes on moderate days in Arizona. Constant on/off cycling indicates sizing or airflow issues.
7. Should I limit how often my system runs? No. Regular cycles are normal. Preventing your system from running can lead to poor comfort and humidity issues. Focus on efficiency via proper maintenance.
8. What output temperature should I expect from the AC? Your supply vent should blow between 50–55°F (10–13°C) when the system is running properly.
9. What thermostat setting is ideal? For comfort and savings in Arizona: 🌞 AC: 78°F while you're home ❄️ Higher when away 🔥 Heat: 68–70°F at night/winter
10. What are the benefits of programmable thermostats? They automatically adjust temperatures, reduce energy waste, and improve comfort by matching your daily routine.
11. How often should I replace HVAC filters? Replace every 1–3 months, depending on filter type, pets, and indoor air quality.
12. What maintenance tasks can I do myself? Replace filters regularly Keep vents and registers dust-free Clean outdoor unit baselines Clear debris around the system
13. How often should I schedule professional maintenance? We recommend professional service twice a year — spring for AC and fall for heating — to maintain warranty and peak performance.
14. What should I check before calling for service? Thermostat settings and batteries Filter condition Circuit breaker status Visible airflow blockages If problems persist, call us for a professional diagnosis.
15. How much does a new HVAC system cost? Costs vary by system size, efficiency, brand, and install complexity. In Glendale, a quality high-efficiency AC or furnace typically ranges from $5,000–$10,000. We provide custom estimates with rebate options.
16. Are there eco-friendly AC systems? Yes — look for ENERGY STAR® certified units and heat pumps with high SEER/HSPF ratings. They use less energy and reduce your carbon footprint.
17. Do electronic air cleaners work? Yes, electronic air cleaners (ionizers) trap small particles and improve indoor air quality — especially helpful for allergy sufferers.
18. Should I close unused room vents? No — closing vents can unbalance pressure and harm system performance. Instead, control zoning via dampers or use ductless mini-splits for separate areas.
19. Why are humidifiers used more during heating season? Winter air is dry. Indoor heating worsens it. Humidifiers add moisture to prevent dry skin, static, and respiratory issues — not needed for AC in summer.
20. My heat pump blows warm (not hot) air and cycles long — is that okay? Yes — heat pumps typically blow 95–105°F air, not furnace-hot. Long run cycles are normal and efficient — shorter cycles may indicate issues.
21. How do I know if my AC unit is big enough? If you have weak airflow, inconsistent cooling, high humidity, or longer-than-normal runtime, your unit may be undersized. A professional load calculation can confirm.
Need help with any specific issue? Our certified HVAC technicians are here to help.
📞 Call (602) 552‑1892 or 877‑4NO‑HOWL to schedule service or ask questions anytime.
Red Wolf Mechanical — No howls. Just comfort.