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Detailed homeowner guides explain safe checks, possible causes and when to request professional diagnosis.
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15 matching answers
Clear filtersHVAC stands for heating, ventilation and air conditioning. It describes the systems that heat, cool, move and condition air in a home or building.
A split system has major components in separate indoor and outdoor units. A typical central AC or heat-pump setup pairs an outdoor compressor/condenser with an indoor coil and air handler or furnace.
A packaged HVAC system combines the main heating and cooling components in one outdoor cabinet, often used where indoor mechanical space is limited or in some rooftop applications.
Both can cool a home. A heat pump can also reverse the refrigeration cycle to provide heating, while a conventional central air conditioner normally provides cooling only.
An air handler contains the blower and indoor coil that move conditioned air through the home. It is commonly paired with a heat pump or air-conditioning system.
In many split systems the furnace provides heat in winter and its blower also moves air across the indoor AC coil during cooling season.
SEER2 is a seasonal cooling-efficiency rating used for central air conditioners and heat pumps. A higher rating indicates greater rated cooling efficiency under the test procedure, but actual utility costs also depend on climate, installation, usage and rates.
HSPF2 is a seasonal heating-efficiency metric for heat pumps. Higher values indicate better rated heating efficiency, but real-world performance also depends on climate, controls, sizing and installation.
BTU is a unit of heat energy. HVAC capacity is often described in BTU per hour; for air conditioning, 12,000 BTU/h is commonly called one ton of cooling capacity.
A ton is a cooling-capacity term, not equipment weight. One ton corresponds to about 12,000 BTU per hour of cooling capacity.
Variable-speed or variable-capacity equipment can adjust output instead of operating only at full capacity. That can improve temperature control, sound levels and part-load efficiency when the system is properly selected and installed.
Two-stage equipment has a lower and a higher operating stage. It can spend more time at reduced output than a single-stage system, which can improve comfort and reduce cycling in suitable applications.
A ductless mini-split is a heat-pump or air-conditioning system that connects one or more indoor units to an outdoor unit without conventional central ductwork.
A zone is an area of a building controlled separately from other areas, using separate indoor units or duct dampers and controls. Proper design is important so airflow remains within equipment requirements.
A return-air grille pulls room air back toward the HVAC equipment so it can be filtered and conditioned again. Blocking return airflow can reduce system performance.
Equipment condition still requires professional evaluation. For regulations, rebates and efficiency guidance, Heco checks authoritative sources and identifies items that can change.
Tell Heco the symptom, equipment type, property type and location. We will help identify the next practical step.