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where you need it,

when you need it

Comfort…

Ductless Mini-Split Systems

At Comfort-Aire, we’re in the business of making you

comfortable, whether at home, work, school, or at

play. We offer a broad product selection for both residential

and commercial use. Products that are efﬁcient, effective

and designed to add value.

We’ve been in the comfort business since our founding in

1933, and our roots go back even further. We can trace

our beginnings to the Wingert Furnace Co. which began

building coal, gas and oil furnaces in 1907. We moved to

our new headquarters in Jackson, Michigan, in 1955, and

this facility has been expanded several times—most recently

in 2006—to accommodate our growth.

Comfort-Aire is known throughout the heating and air

conditioning industry for efﬁcient, reliable products and

in-season availability. Whether for heating or cooling, these

products meet or exceed industry standards for energy

efﬁciency. The line is constantly being updated to add the

features and new technology that customers demand.

Ductless mini-split systems are one of our fastest growing

product groups, and there are many reasons for this

increasing popularity—but overall, the key is ﬂexibility. They

allow air conditioning (and heating with heat pump models)

to be added quickly, conveniently and economically—often

in locations where installing such comfort systems didn’t

seem possible or practical.

Read on to find out how a ductless mini-split system

can make you comfortable, and do it efficiently and

economically.

Comfort…

it’s what we’re

all about

Table of Contents

This guide to ductless mini-splits is designed to

explain how units work, the advantages they bring,

and to show you the entire Comfort-Aire line. With

single zone, multi-zone, and ceiling cassette models,

there’s a mini-split in the size and type you need to

add comfort to just about any location!

Where can you use a mini-split? ............................2

Advantages of mini-splits .......................................3

Mini-splits and indoor air quality...........................3

How does a mini-split work?..................................4

Inverter technology.................................................5

Multi-zone ﬂexibility...............................................6

Energy efﬁciency explained....................................7

Advantages of new refrigerant type .....................7

Quick reference guide to models...........................8

Features of mini-split line.......................................9

Model speciﬁcations

“S” Series Single Zone.......................................10

“V” Series Inverter Single Zone ........................12

“V” Series InverterFlex Multi-Zone...................14

“D” Series Ceiling Cassette ..............................16

Ready to buy? Things to consider ........................17

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Ductless mini-split systems are a great solution to a wide variety of installation challenges, giving

contractors the ability to put air conditioning (and heat with heat pump models) in locations that

previously seemed impossible. They’re ideal when installing ductwork is difﬁcult, prohibitively

expensive, or simply impractical. Both residential and commercial structures, new construction

and existing buildings, are candidates for mini-splits.

Basically a mini-split does away with the need for ductwork. Like a regular split system A/C or

heat pump, the condenser is located outdoors; one or more air handlers are placed indoors. The

two are connected by electrical, refrigerant, and condensate drain lines that run through a small

hole in an exterior wall, generally 3” in diameter or less.

In addition to eliminating the need for ducting, one of the other big advantages of mini-split

systems is true zone control. The air handler is dedicated to the room being conditioned and

is controlled by a wireless remote. That room can be kept at a temperature and humidity level

different from the rest of the house or building.

Multi-zone systems for two, three or four rooms (or one large space) feature a single condenser

that handles two, three or four air handlers. Each air handler is independently controlled, with its

own remote and electronics-based climate controls to regulate temperature and humidity levels,

as well as air ﬂow. Units in a bedroom and a home ofﬁce, for instance, can be programmed

for different hours of operation with the 24-hour timer, or two classrooms situated side by side

can be set at different temperatures.

Mini-split systems have the ﬂexibility to ﬁt virtually anywhere and with SEER ratings up to 20.0,

they’re also economical to operate.

Where can you use a mini-split?

Common applications include:

nHistoric homes (the aesthetics of the

exterior are maintained)

nHomes with hydronic heat

nResidential additions such as a

sunroom or bedroom

nVacation homes and cabins

nSchools (individual classroom control)

nChurch sanctuaries and fellowship halls

nNursing homes and hospitals

Ductless Mini-Splits

The Comfort Solution

nRestaurants

nRemote ofﬁces such as those inside

a warehouse or factory

nUtility transfer stations

nArena sky boxes

nComputer rooms (temperature/

humidity can be different than the

rest of the building)

nATMs and ofﬁce lobbies

Ductless M

Advantages of a ductless mini-split system

Quiet Operation—The operational sound of the compressor and fan is kept

outside with the condensing unit and the indoor air handler is designed to be

exceptionally quiet

Easy Installation—All it takes to connect the outdoor condenser and the indoor

air handler is a hole about 3” in diameter to run refrigerant lines, condensate

drain and electrical wires between the two components

Efﬁciency—Units are designed to be energy efﬁcient with high SEER ratings that

meet or exceed government mandated standards; and only the room or area being

used is conditioned, potentially decreasing electricity usage when compared to

traditional systems

Attractive Appearance—High wall models feature a low proﬁle indoor unit in

a neutral color that blends with any décor; ceiling cassettes also come in a neutral

color that virtually disappears in ceiling installations

Security—With a room air conditioner, there’s always the worry that access to

the home can be gained through the window where the unit is mounted; that

worry is eliminated with a ductless system

Consistent Comfort—Electronic climate controls regulate operation to maintain

a preset temperature level; random swing air ﬂow (on most units) continually

adjusts the fan speed and air direction for a gentle, breeze-like effect

Simple Operation—One fully featured remote is included for each indoor air

handler, making it simple to select the mode, set the temperature and the timer,

and change the airﬂow direction

Mini-Splits and Indoor Air Quality

According to the EPA, the air inside our homes is often more polluted than

outside air. What’s needed to protect yourself from airborne contaminants

is a high quality ﬁltration system, and that’s just what you get with all

ductless mini-splits from Comfort-Aire .

In fact, our “V” Series inverter units are equipped with triple ﬁltration:

• Ionizer—removes microscopic particles from the air

• Active carbon and dust ﬁlter—removes dust, smoke, and pollen

• Air freshening ﬁlter—helps freshen the air

Additionally, the units can be operated in the dehumidiﬁcation mode without

cooling or heating. This removes excess humidity from the indoor air, one of

the keys to preventing the growth of mold, mildew and other contaminants.

There’s more to comfort

than just temperature…

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Cooling without Ductwork

A ductless mini-split air conditioner works the same way central air

conditioning does with one big difference—there’s no ductwork.

Both the central system and the mini-split can be classiﬁed as

split systems because they consist of an outdoor condensing

unit and an indoor air handler. With a central A/C system, the

indoor components include a cooling coil and an air handler (the

furnace’s blower or a separate air handler) that circulates the

conditioned air throughout the structure by way of the ductwork.

The mini-split indoor unit functions as both the indoor coil and

the air handler, delivering conditioned air directly into a single

room without sending it through any ductwork.

Heat Pump Models

A heat pump mini-split operates in basically the same manner,

but adds heating capability. In the summer it transfers heat

from inside the home to the outdoors. A reversing valve makes

it possible for the unit to reverse this procedure during cold

weather, absorbing heat from the outdoors and transferring it

indoors (yes, there is warm air outside, even when it’s below

freezing).

Heat Gain/Loss

One of the advantages this “ductless” operation provides is

efﬁciency. In a central system, the cooler air absorbs heat as

it travels through the ductwork. The longer the duct run, the

greater the temperature gain. In winter, heat can also be lost as

the conditioned air travels through the ducts.

Don’t forget that it takes air pressure to move the conditioned air

through the ducting system and that involves some noise from

the fan and the actual movement of air. A mini-split system,

however, is ultra-quiet because it doesn’t have to push the air

through many feet of ductwork.

Indoor Air Handler

How does a

mini-split

work?

This diagram shows a typical

single zone installation:

n The condensing unit is

installed outdoors while

the air handler is mounted

inside on an exterior wall.

A hole approximately 3” in

diameter is drilled through

the wall. The lines that carry

refrigerant from the air

handler to the condensing

unit and back run through

this hole.

n An electric line runs between

the two components: power

is supplied by the outdoor

unit so there are no cords and

plugs visible on the interior. A

bracket mounted to the wall

supports the air handler, but

is hidden by air handler.

n A drain line runs from the

air handler to the outside to

carry condensate away.

Outdoor Condenser

Inverter Technology:

Taking comfort and efﬁciency

to the next level

Comfort-Aire’s “V” Series ductless mini-

split heat pumps maximize comfort by

reducing temperature ﬂuctuations and at

the same time save an estimated 40% or

more on energy consumption, compared

with traditional mini-split systems.

What’s different about the “V” Series?

It uses state-of-the-art inverter

technology.

An inverter is an electrical

device that varies the

frequency of the power

going to the compressor.

This allows the compressor

to run at variable speeds so

that it can precisely match the power with

the demand.

A microprocessor adjusts the compressor

speed by sampling the ambient air

temperature in the room or space

being cooled or heated. At start up,

the compressor runs at high RPMs to

quickly reach the desired temperature

in the room. Then it slows down to

a low rotation speed to maintain the

temperature. However, during times of

high demand such as weather extremes,

or even a large gathering in the room,

the compressor ramps up to a faster

speed to meet the demand.

Compare this to a traditional system

which cools by running the

compressor until the

setpoint is reached and

then turns off. This

on-off cycling results in

temperature ﬂuctuations

that affect comfort, and

also adds to wear and tear of

the components.

Temperature isn’t the only contributor

to comfort: humidity is critical. Dehu-

midiﬁcation, especially during hot, muggy

weather, is an integral component of

cooling. When the compressor in a tra-

ditional system cycles off, dehumidiﬁca-

tion also stops. With an inverter system,

excess moisture in the air is removed all

the time because the unit runs constantly,

although mostly at “economy” speed.

Ductless mini-splits can save you money when it comes to adding

on to your house. If your current HVAC system is correctly sized to

your existing structure, it may not have the capacity to handle the

new square footage. Rather than replacing the entire system, you

can cool and heat your new space with a mini-split—and save the

cost of installing ductwork.

Advantages of

Inverter Technology

Reaches the desired

temperature quickly

n Provides precise temperature

control and continuous

dehumidiﬁcation (cooling mode)

n Extends component life by

eliminating on-off cycling

Operates exceptionally quietly

because the DC compressor

runs mostly at low speed,

which also reduces any

vibration and associated noise

n Saves energy by matching

the compressor speed to

the demand; rated at up

to 20.0 SEER

n Extra heating capacity even at

low ambient temperatures

When you need to

condition more than

one space, it’s not

necessary to install

separate systems. You

can choose multi-zone

models that let you

cool and heat multiple

rooms, and with our

InverterFlex models,

you can mix and match

2, 3 or 4 air handlers

to best match your

room requirements.

Each system uses one

outdoor condensing

unit tied to multiple

indoor units, and

each of the indoor

units is independently

controlled to meet

specific comfort requirements.

InverterFlex units make zoning

practical and economical. No

complicated systems and controls

are required to cool and heat

individual rooms. Setting the

desired comfort level is a snap,

using the wireless remote that

comes with each indoor air handler.

This makes them ideal not just

for residential use, but also for

nursing homes, classrooms,

anywhere individual comfort

control is preferred.

The multi-zone design is also ideal

for large spaces. One or more

InverterFlex systems can be effective

(and quiet) for a church sanctuary

or fellowship hall, school commons

area, even a warehouse setting,

for example. As with all mini-splits,

there’s minimal disruption for

Multi-Zone

Flexibility

A ductless mini-split can contribute to a better night’s rest by making

your bedroom more comfortable. You can control the temperature

and humidity levels separately from the rest of the home and select

Sleep Mode, if you choose. For most people, body temperature drops

as they sleep so the room setting that was comfortable at bedtime

is too cool by early morning. The Sleep Mode automatically adjusts

the temperature during the night so you don’t wake up looking for a

blanket or have to get up to change the thermostat.

installation and the sleek indoor

units blend into the décor.

As for operating costs, the units use

inverter technology for efﬁciency,

but you may choose to heat/cool

only the room or space being used,

saving even more on utility bills.

Capacities for InverterFlex models

range from 18,000 BTUH to 36,000

BTUH, with indoor air handlers sized

from 9,000 to 12,000 BTUH per zone.

You can see how one outdoor condenser is used in conjunction with multiple

indoor air handlers in a single structure. Air handlers can be installed up to

82’ (depending on model) from the condenser, so you can place the condenser

in the best location for your landscaping.

What do we mean by ‘Energy Efﬁcient’?

In recent years, heating and cooling manufacturers have made signiﬁcant

advances in the efﬁciency of their systems in terms of energy usage. This is an

especially important purchase consideration as fuel prices continue to rise.

Cooling efﬁciency is measured by a Seasonal Energy Efﬁciency Ratio (SEER)

rating. The higher the number, the more efﬁcient the equipment. All Comfort-

Aire systems meet or exceed the federally mandated 13.0 SEER rating, and

some are rated as high as 20.0!

For heat pump models, efﬁciency is shown by a Heating Season Performance

Factor (HSPF). This is an estimate calculated by dividing the seasonal heating

output by the seasonal power consumption in watts. The federal minimum

is 7.7; the most efﬁcient heat pumps have an HSPF between 8 and 10. Our

units are rated as high as 9.5 in the ‘V’ series.

All heating and cooling equipment comes with an Energy Guide label which

shows the estimated energy usage—you can use these labels to compare

equipment efﬁciency. Your dealer can help you determine which system is best

for you, taking into account a number of factors including the average number

of yearly cooling and heating days in your area of the country, in addition to

your individual needs.

All Comfort-Aire ductless mini-splits come charged with R-410A, an

environmentally friendly refrigerant.

Why is this important? Because R-410A doesn’t contribute to depletion

of the earth’s vital ozone layer.

The ozone layer is located in the stratosphere, providing a

protective barrier against the sun’s harmful ultraviolet rays

which can cause skin cancer and cataracts in people. UV

rays can also affect animals and crop yields.

In the past, most refrigerants were compounds

that contained chlorine—chlorofluorocarbons or

hydrochloroﬂuorocarbons. You don’t have to remember

these long names, but you should be aware that when these kinds

of refrigerants are released to the atmosphere, the chlorine molecule

combines with one of the ozone’s oxygen molecules, destroying ozone

at a faster rate than it can be replenished.

Soon all CFC and HCF refrigerants used around the world will be

replaced by non-ozone depleting types such as the R-410A that’s

already in use in all our mini-split models.

ectiv

hydro

All C f t Ai d tl i i lit h d ith R 410A

Energy efficient

and environmentally sound

V Series

Single Zone Heat Pumps

9,000 - 24,000 BTUH

Inverter Technology

S Series

Single Zone

Cooling only and Heat Pumps

9,000 - 24,000 BTUH

Mini-Split Systems

See complete descriptions and specifications

beginning on page 11.

V Series

InverterFlex Heat Pumps

Dual, Tri and Quad Zone

18,000 - 36,000 BTUH

D Series

Ceiling Cassette

24,000 & 36,000 BTUH

cooling only

Quick Reference Guide

SEER

HSPF

Auto Operation

Turbo Mode

Sleep Mode

24 Hour Timer

Auto Louver Swing

Louver Setting

Multi-Stage Filtration

Auto Restart

Low Ambient Op.

Wireless Remote

Self-Diagnostics

Ionizer

“S” Series

Single Zone

SMA09SC-0 13.0 - 333333 -3333 -

SMA12SC-0 13.0 - 333333 -3333 -

SMA18SC-1 13.0 - 333333 -3333 -

SMA24SC-1 13.0 - 333333 -3333 -

SMH09SC-0 13.0 7.8 333333 -3333 -

SMH12SC-0 13.0 7.8 333333 -3333 -

SMH18SC-1 13.0 7.8 333333 -3333 -

SMH24SC-1 13.0 7.8 333333 -3333 -

“V” Series

Single Zone

with Inverter

Technology

VMH09SC-1 19.0 9.5 333333333333

VMH12SC-1 20.0 9.5 333333333333

VMH18SC-1 17.0 8.2 333333333333

VMH24SC-1 17.0 8.2 333333333333

“V” Series

Multi-Zone

with Inverter

Technology

VMH18DC-1 16.0 7.7 333333333333

VMH27TC-1 16.0 7.7 333333333333

VMH36QC-1 15.2 7.7 333333333333

“D” Series

Ceiling Cassette

DMC24CA-1 13.0 - 33 -33333 -33 -

DMC36CA-1 13.0 - 33 -33333 -33 -

Design, specifications and performance data subject to change without notice.

Use this handy guide to

check on the features

of each type of unit.

You can find more

detail on the product

pages that follow.

Classrooms in schools and churches are ideal candi-

dates for ductless mini-splits, especially multi-zone

models. They allow each room to be individually

controlled to meet speciﬁc requirements and the

units can be turned off when the room is not in use

for additional energy savings.

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