HVAC
Frequently Asked Questions
How often should HVAC systems be serviced?
Most HVAC systems should be serviced twice yearly - once before cooling season and once before heating season. Regular maintenance helps prevent breakdowns and maintains efficiency.
What's the difference between AC repair and replacement?
AC repair addresses specific component failures, while replacement involves installing an entirely new system. Replacement is typically recommended when repair costs exceed 50% of a new unit's value.
How long do HVAC systems typically last?
Well-maintained HVAC systems typically last 15-20 years for central air conditioning and 20-25 years for furnaces. Proper maintenance and quality installation significantly impact lifespan.
What are the most common HVAC problems?
Common issues include dirty filters, thermostat malfunctions, refrigerant leaks, electrical problems, and worn components. Many problems can be prevented with regular maintenance. Learn more in our complete AC repair troubleshooting guide.
When should I replace my HVAC air filter?
Standard filters should be replaced every 1-3 months, depending on usage, pets, and air quality. High-efficiency filters may last longer but should be checked monthly.
What size HVAC system do I need for my home?
HVAC sizing depends on square footage, insulation, windows, ceiling height, and climate conditions. A professional load calculation determines the correct system size for optimal efficiency.
Why is my energy bill so high?
High energy bills often result from inefficient equipment, poor insulation, air leaks, dirty filters, incorrect system sizing, or lack of maintenance. A professional assessment can identify causes.
What are the benefits of ductless mini-split systems?
Ductless systems offer zone control, energy efficiency, easy installation, and individual room temperature control. They're ideal for additions, older homes, or spaces without ductwork.
How do I know if my ductwork needs repair?
Signs include uneven temperatures, high energy bills, dust accumulation, visible damage, or whistling sounds. Professional duct inspection can identify leaks and inefficiencies.
What's involved in HVAC installation?
Installation includes equipment sizing, removing old systems, installing new equipment, connecting electrical and gas lines, testing performance, and ensuring proper operation and safety.
What are common AC cooling problems?
Poor cooling can result from dirty filters, low refrigerant, blocked vents, thermostat issues, or system malfunctions. Professional diagnosis determines the specific cause and appropriate solution.
What factors affect HVAC repair costs?
Repair costs depend on the type of problem, required parts, system age, accessibility, and labor complexity. Emergency repairs and major component replacements typically cost more than routine fixes.
How do I choose the right HVAC contractor?
Look for proper licensing, insurance, reputation, experience with your system type, fair pricing, and warranty offerings. Check reviews and verify credentials before hiring.
What's included in an HVAC maintenance visit?
Maintenance typically includes filter changes, system cleaning, performance testing, safety checks, lubrication, electrical inspections, and identifying potential issues before they become problems.
Should I repair or replace my old HVAC system?
Consider system age, repair frequency, energy efficiency, repair costs versus replacement costs, and available rebates. Systems over 15 years old with major problems often benefit from replacement.
What are SEER ratings and why do they matter?
SEER (Seasonal Energy Efficiency Ratio) measures cooling efficiency. Higher SEER ratings mean better energy efficiency and lower operating costs, though initial equipment costs are typically higher.
How can I reduce humidity in my home?
Proper AC sizing, good ventilation, dehumidifiers, air sealing, and maintaining equipment help control humidity. Excessive humidity can cause comfort issues and indoor air quality problems.
What's the difference between single-stage and variable-speed systems?
Single-stage systems run at full capacity when on, while variable-speed systems adjust output to match demand. Variable-speed systems offer better efficiency and comfort control.
Why does my HVAC system make strange noises?
Different sounds indicate different problems - grinding suggests bearing issues, squealing indicates belt problems, and banging could mean loose components. Professional diagnosis prevents further damage.
What are the benefits of programmable thermostats?
Programmable thermostats automatically adjust temperatures based on schedules, reducing energy waste when you're away. Smart thermostats offer remote control and learning capabilities for maximum efficiency.
How important is proper HVAC installation?
Proper installation is crucial for efficiency, performance, and longevity. Poor installation can reduce efficiency by 30% and lead to premature failures, voiding warranties.
What should I do if my HVAC system stops working?
Check the thermostat settings, circuit breakers, and air filter first. If these don't solve the problem, contact a professional technician to avoid causing additional damage.
How do I improve indoor air quality?
Regular filter changes, proper ventilation, humidity control, air purifiers, duct cleaning, and source control help maintain healthy indoor air. Professional assessment identifies specific needs.
What's involved in commercial HVAC services?
Commercial services include larger system maintenance, emergency repairs, energy efficiency assessments, preventive maintenance programs, and compliance with commercial building requirements.
When is the best time to replace an HVAC system?
Spring and fall typically offer better pricing and availability. However, replacement should be planned before complete system failure to avoid emergency situations and higher costs.