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Mini-Split for a Bonus Room in Highland Village, TX

Upstairs rooms and rooms over the garage are common in Highland Village's established 1980s-through-2000s homes, and they're also the rooms owners complain about most: hotter in summer and colder in winter than the rest of the house, no matter how the thermostat is set. Glass-heavy living areas facing the lake or the yard can run warm for the same reason.

Get your bonus room actually comfortable — call 214-238-4349 or get a free quote.

Why the builder's ductwork struggles here

The room is typically the last stop on a long duct run, and it often sits over an unconditioned garage. Even a well-built home rarely balances airflow well enough to make that room comparable to the rest of the house, and decades-old ductwork has had years to lose sealing and efficiency.

Why a mini-split is the right fit

A ductless mini-split installs as its own independent zone. One indoor head serves the space, one condenser sits on a pad outside, and a small line set connects them through a single wall penetration — no ductwork to extend, and no change to how the rest of the house is cooled.

Finished homes, precise fixes

In a finished, high-value home, nobody wants ceilings opened to reroute ducts. A mini-split gives the problem room its own capacity with a small indoor head and a concealed line set, without touching the rest of the system.

Sizing and placement, in general terms

Bonus room and added-room installs are typically single-zone, sized around the room's square footage and its exposure, which adds heat load in summer. The indoor head mounts on an interior wall, and the condenser sits on a pad outside, positioned to keep the line-set run short.

Why a mini-split specialist matters

Bonus-room and added-room layouts behave consistently enough that we've seen the pattern many times, and sizing it right the first time avoids the common mistake of either overcorrecting with too much capacity or underestimating the heat the room picks up. We specialize in mini-splits, and our variable-speed inverter systems hold a steadier temperature than fixed-speed equipment.

The warranty

Every residential mini-split we install, bonus rooms included, is backed by manufacturer parts coverage plus our 2-year labor warranty — the standard on every job as a Mitsubishi Diamond Contractor.

Efficiency that shows up on the bill

Variable-speed technology keeps run costs down even in a room with more heat load than a typical space, and qualifying installs may be eligible for the federal 25C tax credit. We'll confirm what applies during your quote.

Ready to make your bonus room usable in every season? Call 214-238-4349 or request your free quote today.

FAQ

Why is an upstairs or bonus room hard to keep comfortable in Highland Village? It's usually served by the longest, last duct run and often sits over an unconditioned garage, so it loses the airflow battle to the rest of the house.

Is this common in the 1980s-to-2000s homes here? Yes. Upstairs rooms and rooms over the garage in established Highland Village homes often sit at the end of long duct runs, and glass-heavy living areas pick up extra heat.

How long does a bonus room mini-split install take? Most single-zone bonus room installs are straightforward for our crews; we'll confirm exact timing once we've scoped your space.

What warranty comes with a bonus room install? The same manufacturer parts coverage plus our 2-year labor warranty we back every residential mini-split with, as a Mitsubishi Diamond Contractor.