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Single-Zone Ductless Systems

Single-Zone Ductless Mini-Split Systems Tucson AZ | Serrano’s Heating & Cooling
Tucson’s #1 Choice for Single-Zone Comfort

SINGLE-ZONE
DUCTLESS MINI-SPLITS

One powerful indoor unit. One outdoor condenser.
Perfect room-by-room comfort — no ducts, no hassle.

4.9/5 from 380+ Tucson reviews
Family-owned since 2006 • TEP Trade Ally
100% Satisfaction Guarantee
Same-day service available
TEP Rebates up to $2,000
Serving Tucson & all surrounding areas
PERFECT FOR ONE ZONE

One indoor unit.
One outdoor unit.
One perfectly comfortable room.

Our single-zone ductless mini-split systems deliver powerful, efficient heating and cooling to exactly where you need it — without the mess and expense of ductwork.

Ideal for Tucson homes where adding central air just isn’t practical: garages, sunrooms, home offices, bedroom additions, historic homes in Casas Adobes, Catalina Foothills, and more.

30%
Less energy than window units
68 dB
Whisper-quiet outdoor unit
SEER 2
Up to 38.5 efficiency rating
Single-zone ductless mini-split indoor wall unit in modern Tucson home
Indoor unit
Sleek wall-mounted
Outdoor unit
Compact & quiet

Why Tucson Homeowners Love Single-Zone Mini-Splits

Built for our desert climate. Designed for real life.

💰

Slash Your Energy Bills

Inverter technology adjusts output to your exact needs — up to 40% more efficient than traditional systems in Tucson’s wild temperature swings.

Qualify for TEP rebates
🌡️

True Zoned Comfort

Set the perfect temperature in your garage workshop or sunroom while the rest of the house stays at its own setting. No more hot or cold spots.

  • Heat + Cool in one system
  • Dehumidifies better than central AC
🔧

Fast, Clean Installation

One small 3-inch hole through the wall. No ductwork demolition. Most Tucson homes are up and running in a single day.

Perfect for:
Garages Additions Apartments Historic Homes

Single-Zone vs The Rest

Feature Single-Zone Mini-Split Central AC + Furnace Window Units
Ductwork required Yes
Room-by-room control YES No Yes (one per window)
Typical install time 1 day 3–7 days 1 hour
Annual energy cost (Tucson avg.) $380 $920 $650
Noise level indoors 19–28 dB (library quiet) 45+ dB 55+ dB

Simple. Powerful. Tucson-Tough.

1️⃣
Free Expert Sizing
We measure your space and recommend the perfect BTU capacity for your Tucson climate.
2️⃣
One-Day Install
Licensed techs drill one small hole, mount units, connect refrigerant lines & test.
3️⃣
Smart Controls
Wi-Fi enabled thermostat included. Control from your phone — even when you’re not home.
4️⃣
Ongoing Care
Link to our Maintenance Plans for priority service and filter reminders.

See Your Potential Savings

150 400 1200
Traditional cooling
$1,240
annual estimated
With our single-zone mini-split
$480
annual estimated
You could save $760 per year in Tucson

Frequently Asked Questions

How loud are single-zone mini-splits?
The indoor unit runs as quiet as 19 dB — quieter than a whisper. The outdoor unit is typically under 55 dB, far quieter than a central condenser.
Can it both heat and cool?
Yes! Most single-zone systems are heat pumps — perfect for Tucson’s mild winters and scorching summers.
Do I need a maintenance plan?
Highly recommended. Our Maintenance Plans include annual tune-ups, priority scheduling, and big discounts on repairs.
What if I need service after hours?
Our team goes above and beyond to help customers even during early mornings or late evenings when schedules allow. For urgent needs, visit our Emergency Services page.

Ready to enjoy perfect comfort in that one room you’ve been suffering in?

Book your free, no-pressure estimate in under 2 minutes.

SCHEDULE MY FREE ESTIMATE NOW
Or call (520) 201-3865
Family-owned. Locally trusted. Tucson strong since 2006.