Mini-splits use heat-pump technology to heat and cool individual rooms or groups of rooms through ductless heads or compact concealed ducted air handlers. Air Care designs, installs, replaces and repairs single-zone and multi-zone systems across San Jose and the surrounding Bay Area.
They can be a strong fit for additions, ADUs, garages, offices, remodels and homes where conventional ductwork is impractical. We size each zone from the actual load and design the indoor-unit layout around the home.
Every room has different comfort requirements.
Our Room Comfort Design process focuses on matching heating and cooling capacity to the rooms or zones being served and selecting an indoor-unit layout that fits the home.
We learn how each room is used, identify comfort concerns, and review the project goals.
We evaluate room size, insulation, windows, ceiling height, airflow and installation options.
We determine an appropriate number of indoor units, equipment capacity, and system layout based on the room loads, layout, and project goals.
Installation follows the requirements for the selected equipment, with startup and system operation checked before the project is completed.
Mini-split systems are available in several indoor-unit styles. The right option depends on the room, available mounting space, service access, and equipment pairing.
615AHA
Common indoor-unit style.
Often used for bedrooms, offices, and living spaces.
45MBCA
45MCCA
Installed flush within the ceiling.
Can suit open spaces where the ceiling structure, clearances, and service access allow.
45MBFA
An option where wall or ceiling placement is limited.
Suitability depends on the room layout, available wall area, and equipment requirements.
45MBAA
45MBDA
Hidden above ceilings or inside soffits.
Uses short, properly designed duct runs while remaining part of a mini-split heat-pump system.
"Mini-split" does not automatically mean ductless. Both configurations use the same heat-pump technology — the difference is how conditioned air reaches each space.
Neither configuration is universally better. Some compatible systems can combine ductless and ducted indoor units on the same outdoor system when the equipment and design support it.
The right configuration depends on your home's loads, layout and zoning goals — not on a rule that more zones is always better.
One outdoor system serving one indoor zone — a straightforward fit for a single space such as an addition, office, garage conversion or ADU.
One outdoor system serving multiple compatible indoor units, each independently controlled. Capacity is shared across zones, so the design of the whole system matters.
Every Air Care mini-split design starts with the actual heating and cooling load of each space — insulation, windows, orientation, air leakage, layout and design conditions — using load-calculation principles such as Manual J rather than rules of thumb.
Bigger is not automatically better: oversizing can contribute to short cycling and comfort problems. Many mini-split systems use inverter-driven compressors that can modulate capacity. Actual efficiency, sound, and operating range depend on the indoor/outdoor equipment pairing and installation. When comparing equipment, current efficiency metrics include SEER2 and HSPF2, while heating capacity should be checked against the calculated load.
Installation quality is an important part of system performance. A complete installation addresses:
Electrical requirements depend on the selected equipment — including minimum circuit ampacity and breaker sizing — and on your home's existing electrical conditions. We evaluate this during design; installing a mini-split does not automatically require an electrical panel upgrade.
A central ducted heat pump conditions the whole home through one central air handler and a full duct system. Mini-splits use one or more smaller indoor units — ductless or ducted — for room-by-room delivery. Both are heat-pump technology; the better fit depends on your home's layout, existing ductwork and comfort goals.
Compare central heat pump installationAlready have a mini-split system?
Our technicians diagnose, repair and maintain all makes and models of ductless and ducted mini-split systems, including single-zone and multi-zone equipment.
Common concerns we diagnose:
Symptoms can have many possible causes. Diagnosis may involve checking airflow, refrigerant charge, electrical and control communication, and condensate management before any repair is recommended — we don't guess from symptoms.
We repair and maintain all makes and models of ductless and ducted mini-split systems. After diagnosis, we explain repair versus replacement based on system condition, parts availability, compatibility and service history.
Review current utility, state, regional, and other incentive resources that may apply to your new ductless mini split system. Program availability and eligibility can change.
"Kintroy arrived on time, was friendly and courteous, and had great communication skills. He assessed a mini split system for me in an ADU, determined that wires had been crossed in installation (by a ..."
"Kintroy showed up on time and was very respectful with tenant, fixed the issue quickly and clean his area well."
"Anthony, Brian and Sergio did an amazing job installing our mini split AC unit. They were professional, courteous, attentive and super easy to work with."
"Installers followed Covid protocol, kept us well informed about installation issues, cleaned up nicely each day, explained the system and its use to us, and were very polite & pleasant."
"Evaluation for repair or replacement: knowledgeable, friendly, explained issue/problem thoroughly"
Real Air Care installations across the South Bay — including a Palo Alto townhome where one outdoor heat pump serves a ducted air handler for the common areas and ductless ceiling cassettes in each bedroom.
InstallationsAir Care Heating & Cooling completed a high-efficiency heat pump installation in Palo Alto, CA 94301 as part of a townhome remodel. The homeowner was referred to Air Care by a neighbor and wanted to replace the home’s older, outdated gas furnace with a modern heating and cooling solution.
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InstallationsAir Care Heating & Cooling completed the HVAC and ventilation installation for a newly constructed ADU in San Jose, CA 95125, including a 1-to-1 ductless mini-split heat pump system, an Energy Recovery Ventilator, and all required mechanical exhaust venting.
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