Learn HVAC: Your Guide to Heating & Air Conditioning.

Learn more about HVAC to get a foundation to make smart decisions for your HVAC system and protect your investment.

HVAC Buying Guide
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HVAC Glossary

Having a basic understanding of HVAC terminology empowers homeowners to make informed decisions about their heating and cooling systems. It helps prevent confusion when discussing repairs, maintenance, or upgrades with professionals. By knowing common terms, homeowners can better understand service recommendations, identify potential issues early, and ensure they’re getting the best value and performance from their HVAC investments. FairPrice Heating & Cooling believes in educating customers to promote transparency and confidence in every service interaction.

HVAC Terms (A-Z)

Air Ducts
A network of tubes that distribute heated or cooled air throughout a home from the HVAC system.

Air Handler
The indoor part of an HVAC system that circulates air through the ductwork.

BTU (British Thermal Unit)
A measure of heat energy. In HVAC, it indicates how much heating or cooling a system can provide.

Compressor
A key component in an air conditioner or heat pump that compresses refrigerant to circulate through the system.

Condenser Coil
Located in the outdoor unit, it releases heat collected from inside the home to the outside air.

Dehumidifier
A device that removes excess moisture from the air, improving comfort and indoor air quality.

Ductless Mini-Split
An HVAC system that provides heating and cooling without ductwork, ideal for specific rooms or additions.

Energy Efficiency Ratio (EER)
A rating that measures the efficiency of cooling equipment under specific conditions.

Evaporator Coil
Located in the indoor unit, it absorbs heat from inside the home, cooling the air as it passes over the coil.

Filter
A component that traps dust, pollen, and other particles to improve air quality and protect the HVAC system.

Freon (Refrigerant)
A chemical compound used in air conditioners and heat pumps to absorb and transfer heat.

Heat Exchanger
A component in a furnace that transfers heat from combustion gases to the air circulating in the home.

Heat Pump
An energy-efficient system that provides both heating and cooling by transferring heat between indoors and outdoors.

HVAC (Heating, Ventilation, and Air Conditioning)
An umbrella term for systems that control indoor climate and air quality.

Indoor Air Quality (IAQ)
The overall quality of air inside a building, affecting health, comfort, and energy efficiency.

SEER (Seasonal Energy Efficiency Ratio)
A rating that measures the efficiency of air conditioners and heat pumps over a typical cooling season.

Smart Thermostat
An advanced thermostat that allows homeowners to control temperature settings remotely and optimize energy use.

Thermostat
A device that regulates the HVAC system by monitoring and adjusting indoor temperature.

Ton (Cooling Capacity)
A measurement of an air conditioner’s cooling capacity, with 1 ton equaling 12,000 BTUs per hour.

Ventilation
The process of exchanging indoor air with outdoor air to maintain air quality and remove contaminants.

Zoning System
An HVAC setup that divides a home into zones, allowing for customized temperature control in different areas.

Frequently Asked Questions

A typical HVAC system lasts 15 to 20 years with proper maintenance. However, factors like usage, climate, and maintenance frequency can influence lifespan. Systems that receive annual tune-ups, filter changes, and timely repairs often last longer and perform more efficiently. If your HVAC system is over 15 years old and experiencing frequent breakdowns or high energy bills, it might be more cost-effective to consider a replacement with a newer, energy-efficient model.

SEER stands for Seasonal Energy Efficiency Ratio. It measures how efficiently an air conditioning system operates over an entire cooling season. The higher the SEER rating, the more energy-efficient the unit is, which means lower energy bills and reduced environmental impact. In California, the minimum SEER requirement is 15 for new systems, but many homeowners opt for systems with SEER ratings of 16 to 20+ for optimal energy savings. A high SEER rating can also make you eligible for rebates and incentives.

When purchasing a new HVAC system, look for comprehensive warranties that protect your investment. Key warranties include:

  • Manufacturer’s Parts Warranty (10 years standard): Covers parts like compressors, coils, and motors.

  • Labor Warranty (1-5 years): Covers the cost of service labor for repairs.

  • Compressor Warranty (10 years or longer): Specifically covers the compressor in AC or heat pump systems.

  • Installation Warranty (1-2 years): Guarantees quality workmanship from the HVAC installer.
    Reputable companies like FairPrice Heating & Cooling also offer extended warranty options for added peace of mind.

Professional installation is absolutely critical for an HVAC system's performance, efficiency, and longevity. HVAC systems are complex, involving precise load calculations, proper ductwork design, electrical wiring, refrigerant handling, and safety protocols. A DIY installation risks voiding manufacturer warranties, inefficient operation, costly repairs, and even safety hazards. By choosing a licensed and insured HVAC professional, like FairPrice Heating & Cooling, you ensure your system is installed correctly, meets all local building codes, and performs optimally for years to come.

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