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HVAC FAQs

Quick answers to the most common questions.

Heating, Ventilation, and Air Conditioning.
Most systems last 10–15 years, depending on maintenance, usage, and environment.
Replace disposable filters every 1–3 months; clean washable filters monthly.
A government-backed program that certifies energy-efficient products and homes.
Seasonal Energy Efficiency Ratio—measures cooling efficiency; higher numbers mean greater efficiency.
Minimum Efficiency Reporting Value—rates how well a filter captures particles; higher ratings mean better filtration.
Look for even temperatures, normal bills, steady run times, and no unusual noises or smells. Annual tune-ups verify efficiency.
Proper size (Manual J), efficiency (SEER/SEER2), warranty, installation quality, noise, and budget/rebates/financing.
If repairs exceed ~50% of a new system or the unit is 10–15+ years old, replacement often makes more sense.
Load calculation, equipment selection, permits, any needed duct/electrical work, installation, refrigerant charging, and commissioning.
Change filters, seal/insulate ducts, schedule maintenance, use a programmable/smart thermostat, shade windows, and set reasonable temps.
Common guidance: 78°F in summer and 68°F in winter for a comfort/efficiency balance—adjust to taste.
Use our HVAC Load Calculator for a ballpark. We confirm with a professional Manual J during your quote.
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