Two or three rooms. One outdoor unit. Zero contractor.
Cool the bedrooms and the living room independently from a single MRCOOL® 5th Gen multi-zone condenser — each room on its own thermostat, all on one pre-charged DIY kit.
AuthorizedDealer
Pick a number and the builder sizes each room, then matches the condenser, indoor heads and line sets.
Just one room? Size it here →The offer
Choose your multi-zone condenser.
MRCOOL® 5th Gen DIY multi-zone condensers that power 2–3 indoor heads. Pair heads and line sets in the System Builder.
Want us to size each room and bundle the exact heads + line sets? Use the System Builder.
18K BTU condenser · powers up to 3 heads
What MRCOOL® owners say
40 reviews of the MRCOOL® DIY 5th Gen 18K 2-zone system
Read them all at The Home Depot (U.S.) →Reviews are of the MRCOOL® product, posted by buyers at The Home Depot (U.S.), and are not reviews of Dr.Climate.
How it works
One condenser, up to three independent zones — you install it.
A single MRCOOL® 5th Gen DIY multi-zone condenser (R-454B) powers 2–3 indoor heads, each with its own remote and setpoint. Pre-charged Quick Connect® line sets mean the whole kit goes in without a vacuum pump or a licence.
One condenser
A single 5th Gen multi-zone outdoor unit runs every room.
Per-room heads
Each zone gets its own indoor head and thermostat.
Pre-charged lines
Hand-tighten Quick Connect® line sets to each head.
One tidy kit
Sized, matched and bundled — no guessing at part numbers.
Why bother
A few rooms means a few thermostats — not a few window units.
You've got two or three spaces that never agree: the primary bedroom, the kids' rooms, the living room. Running a separate window or portable unit in each is loud, inefficient, and looks like a patchwork.
Why not call a contractor
Stacking single units is the expensive, ugly way to do it.
Three window units means three sets of noise, three efficiency penalties, and three holes in your walls. A contractor multi-zone install, meanwhile, runs $8,000–$14,000 — again, mostly labour.
The payoff
Every room on its own setpoint — from one clean install.
Bundle your 2–3 zone kit.
Start with a condenser below, or let the guided builder size each room and match every head and line set for you.