Frost Air | Arizona HVAC Services

HVAC FAQs

Quick answers to the most common questions.

What does HVAC stand for? −

HVAC stands for Heating, Ventilation, and Air Conditioning.

What is the average life expectancy of an HVAC system? +

Most systems last 10–15 years, depending on maintenance and usage.

How often should I change my air filters? +

Every 1–3 months for disposable filters; washable filters should be cleaned monthly.

What is ENERGY STAR? +

ENERGY STAR is a government-backed program certifying products for energy efficiency.

What is SEER? +

Seasonal Energy Efficiency Ratio—measures cooling efficiency; higher numbers mean more efficient units.

What is a MERV rating? +

Minimum Efficiency Reporting Value—rates how well a filter captures particles; higher ratings mean better filtration.

How can I tell if my heating system is working properly and efficiently? +

Look for even temperatures, normal energy bills, steady run times, and no unusual noises or smells. Annual tune-ups help verify efficiency.

What should I consider when purchasing an air conditioner? +

Proper size (Manual J), efficiency (SEER/SEER2), warranty, installation quality, noise, and budget/rebates/financing.

Should I replace or repair my HVAC system? +

If repairs exceed ~50% of the cost of a new system or the system is 10–15+ years old, replacement often makes more sense.

What goes into having an HVAC system installed? +

Load calculation, equipment selection, permits, ductwork/electrical as needed, installation, refrigerant charging, testing/commissioning.

How can I increase my HVAC system’s efficiency? +

Change filters, seal/insulate ducts, schedule maintenance, use a programmable/smart thermostat, shade windows, and set reasonable temps.

At what temperature should I set my thermostat? +

Common guidance: 78°F in summer and 68°F in winter for a comfort/efficiency balance (adjust to taste).

How do I know what size AC I need? +

Use our HVAC Load Calculator for a ballpark. We confirm with a professional Manual J during your quote.

★★★★★

"Frost Air exceeded our expectations with their professionalism and quick AC install. We will use them again!"

- Adriana K., Angi

★★★★★

"Incredible service, fast response, and honest pricing. Our home is cool again thanks to Frost Air!"

- Ryan D., Google

★★★★★

"Friendly, knowledgeable, and clean work. Highly recommend for any HVAC needs in Arizona!"

- Tonya S., Facebook

Contact Frost Air today for reliable, honest HVAC services across Arizona.