Casitas and ADUs

Casita and ADU mini split cooling in San Marcos, Texas

A backyard casita or accessory dwelling unit in San Marcos almost never comes with its own ducted system, which makes a standalone mini split the standard answer.

Casita and ADU mini split cooling in San Marcos, Texas

A backyard casita or accessory dwelling unit in San Marcos almost never comes with its own ducted system, which makes a standalone mini split the standard answer.

Accessory dwelling units, guest casitas, and converted backyard structures are usually built or renovated without tying into the main house's ductwork. A mini split gives the structure its own independent heating and cooling without trenching a duct run across the yard, which is why it is the default choice for this kind of space.

Because the structure is standalone, the outdoor condenser placement matters for both sound and access. We walk the property with you to find a spot with airflow, a level pad, and a reasonable distance from windows, whether that structure sits close to the main house or well back on the lot.

San Marcos sits in Hays County along the I-35 corridor, inside the area our crew already covers, so an ADU or casita install here follows the same process and pricing as any other property on the route.

What this job includes

No trenching required

A mini split reaches a detached structure without running ductwork across the yard. The line set is the only connection between the two units.

Its own zone, its own comfort

A casita or ADU gets its own independent temperature control, which matters if it is rented, used as a guest space, or lived in full time.

Permits and rules vary by property

Some cities and HOAs have their own requirements for detached structures. We will flag anything we think you need to check on before work starts, but confirming local permitting is on the property owner.

San Marcos, Texas. San Marcos is in Hays County along the I-35 corridor, part of the area our crew already services every week. We do not add a special trip charge to reach San Marcos, and the pricing and process here match every other stop on the route.

Frequently asked questions

Does an ADU or casita need its own electrical circuit?

Yes, a dedicated circuit and disconnect are part of a standard install. If the structure is not already wired for it, that gets scoped and quoted before work starts.

Are there permit requirements for ADU cooling in San Marcos?

Requirements vary by city and by property, and we are not a permitting authority. We will tell you if something looks like it needs a check with your local building department, but confirming that is on the property owner.

How far can the outdoor unit be from the casita?

Line set length has practical limits and affects performance and cost. We confirm placement on site rather than estimating from a description.

Can this cool and heat a casita used as a rental?

Yes, a mini split handles both sides of the year, which is useful for a space that needs to be comfortable year round for a tenant or guest.

What does a casita install cost?

Standard single zone installation is $2,400 for materials and labor, with the same $400 deposit and completion-due balance as any other job.

What it costs in San Marcos

Standard installation is $2,400 for materials and labor, the same flat number everywhere on our route including San Marcos. One day each week is JOKER DAY, priced lower than the standard rate, with the day and the price revealed on the home page rather than advertised as a fixed number ahead of time. A $400 materials deposit books your day. The balance is due on completion, after the system is running and you have watched it work.