Heating · Ventilation · Air conditioning
Explore heating, ventilation and air conditioning equipment, browse original analysis and compare model-specific product information.
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Browse a collection for its operating principles, options and selection criteria.
Move heat between indoors and outdoors to heat and cool a building. Air-source systems can serve existing ducts or a ductless indoor unit.
Explore collection ↗COOLINGUse an outdoor unit and indoor coil to cool air delivered through ducts.
Explore collection ↗VENTILATIONBring in outdoor air and remove stale indoor air using a planned ventilation strategy.
Explore collection ↗COOLINGConnect an outdoor unit to one or more indoor units for targeted cooling; heat-pump models also heat.
Explore collection ↗HEATINGHeat water for radiators, baseboards, or radiant floors. They do not provide cooling on their own.
Explore collection ↗COOLINGCool air by evaporating water; effectiveness depends strongly on outdoor humidity.
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Original coverage of the decisions behind HVAC equipment and design.
One technology, several ways to deliver comfort. See what changes between the configurations.
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Exact models, published equipment prices and what to confirm before ordering.
12,000 BTU single-zone mini-split heat pump
18 SEER2 · 230V · R32
View specifications and price scope ↗Single-zone wall-mounted heat pump system
21.7 SEER2 · R454B
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Systems sized and configured for homes, including heating, cooling, ventilation and air quality.
Explore ↗HVAC TOPICLarger buildings require coordinated equipment, controls, maintenance access and system design.
Explore ↗HVAC TOPICLook at matched equipment ratings, building loads, controls and distribution losses together.
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