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Glass exposure on the east or west side of a Houston home loads heat in the afternoon faster than supply ducts can keep up. A dedicated single-zone in the sunroom takes the load off the central system and lets it actually catch up everywhere else.
If the rest of the house is comfortable but one bedroom is always warm, the issue is usually duct leakage, return-air shortage, or a long-supply run problem.
When you build out a garage apartment, a guest suite, or an addition off the back of the house, running new ductwork is expensive and disruptive.
Bonus rooms above garages are notorious for running 10°F hotter than the rest of the house, because the central system was sized for the original floor plan and the attic above the garage is unconditioned.
Old Heights and Montrose lots commonly have a detached garage that has been converted to an office, studio, or guest room.
Houston homes come in all shapes and layouts, and not every space connects to existing ductwork. These are the most common ductless mini-split installation types we handle across the Houston metro area.
Fujitsu Halcyon Runs 19 dB on lowest fan speed, quieter than a whisper.
Mitsubishi Hyper-Heat MSZ-FS Heats reliably down to –13°F.
Daikin Quaternity Genuinely better dehumidification mode than the rest of the market.
Bosch BMS or LG LMU Mid-tier price with strong build quality.
LG Art Cool Gallery or Mirror Picture-frame mounting with a custom artwork insert or a mirrored finish
12K, 18K, 24K, 30K, 36K. Manual J load calc determines this; we do not guess
Mitsubishi and Daikin at top, Fujitsu mid-upper, LG and Bosch mid-tier
over 50 feet adds material cost and additional refrigerant charge
new 240V dedicated circuit is typically $250 to $500; sub-panel upgrade adds morenew 240V dedicated circuit is typically $250 to $500; sub-panel upgrade adds more
$250 to $400 typical
concealed adds 1–2 hours labor
Our licensed contractors install single-zone wall mounts, ceiling cassettes, and multi-zone whole-home layouts. We size each system to the space and match the right setup to the cooling demand so the unit runs efficiently from day one.
We install mini-split systems from Mitsubishi, Daikin, Fujitsu, and other leading brands. Our team helps you choose the right unit based on room size, energy ratings, and budget so you get lasting performance.
Texas requires permits for many mini-split installations, and local codes vary by municipality. We pull the permits, schedule the inspections, and make sure every install meets current electrical and mechanical code requirements.
Line sets are routed neatly through walls or along exterior surfaces, and all penetrations are sealed against moisture and pests. Our technicians leave the workspace clean and the finished install looking like it belongs in the room.
This is the part most contractors skip. We do not skip it.
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75 Degree AC provides HVAC services across Houston TX, supporting residential and light commercial properties throughout the city. Our service coverage reflects how HVAC demand actually works in Houston, from central neighborhoods to outer city districts. Customers rely on us for consistent service standards, clear communication, and dependable system support city-wide.
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Most Texas municipalities require a permit for mini-split installation because it involves electrical work and refrigerant handling. We pull the necessary permits and schedule inspections so the job meets all local code requirements before the system goes live.
A single-zone system pairs one indoor unit with one outdoor unit and cools one room. A multi-zone system connects multiple indoor units to a single outdoor condenser, allowing independent temperature control in several rooms without running separate outdoor units for each space.
A multi-zone mini-split system can cool an entire home by placing individual indoor units in each room or area. Our team sizes the outdoor condenser and each indoor head to match the square footage and cooling load, giving you whole-home comfort without any ductwork.
A single-zone mini-split installation usually takes between four and six hours. Multi-zone systems with three or more indoor units may take a full day or extend into a second morning depending on line set routing and electrical work involved in the layout.