Small Duct High Velocity

Central Heating & A/C System

SpacePak makes it possible to install central heating and cooling in any home or small business; regardless of structure design, age, size or type of construction. SpacePak is an air distribution system which uses a principle known as aspiration – as the air stream enters the room, it creates a gentle mixing of air in the room to provide thorough, comfortable draft-free air circulation. SpacePak eliminates stratification with a minimum floor-to-ceiling temperature difference.Below is a list of climate control products offered by SpacePak with a brief overview of capabilities and features. Also listed is any related literature. Click on the titles for more information (where available) or download the appropriate literature.

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Air Handlers – Spacepak

    High Velocity Air Handlers


    • Multiple configurations for all types and size applications including R410A, heat pumps and hydronic coils.
    • Fully insulated and durable “E-Coat” finished cabinet for ultra quiet operation and superior longevity.
    • Low-profile horizontal or vertical design for application flexibility. Fits in tight spaces including attics, basements, closets, crawl-spaces and garages.

    Chiller Series Reverse Cycle Heat Pumps

    Chiller Series heat pumps work similar to conventional heat pumps by circulating refrigerant, which vaporizes at a low temperature in its enclosed evaporator producing additional energy in the process. Further concentration of the conditioned warm vapor occurs in SpacePak’s dual programmable compressor raising it to a temperature where it can be circulated through a matching SpacePak WCSP air handler for distribution to the occupied space.

    • Dual Programmable Compressor
    • Simple Piping & Pumping
    • Easily Zoned
    • 30% larger condenser coil than traditional units
    • Self Diagnostic Control – Factory Programmed
    • Low AMP requirements
    • Simplified installation & ease of service
    • Quiet Operation – “Soft Start” package standard
    • Highest R-410A COP and EER
    • No Refrigerant Handling
    • Refrigerant stay outside the building
    • Low ambient antifreeze protection

    SpacePak Heating Products

    ThermaPak® High Efficiency, Compact Gas-Burning Condensing Boiler

    • Ultra high efficient packaged boiler and domestic water heater combination unit.
    • 93% Certified operating efficiency with full 5:1 operating modulation insures optimal efficiency at all heating requirements.
    • Sizing versatility for all applications from ranging 30,000 – 160,000 BTUs.
    • Over 4 GPM of semi-instantaneous domestic hot water.
    • European space-saving wall-hung design.
    • Environmentally friendly – low emissions

    Heating Options

    WaterPak hydronic coils

    • High Output 4 Row Coils
    • Custom-fit design for seamless installation on SpacePak air handlers
    • Perfect complement to ThermaPak boilers
    ElectriPak integral electronic heat modules

    • ETL approved design
    • Fully modulating efficient operation
    • Custom-fit design for seamless installation on SpacePak air handlers
    Electric Duct Heaters

    • UL approved design
    • Cost-effective supplementary heat source
    • Perfect complement to homes with radiant floor heating
    • Custom-fit design for seamless installation in SpacePak main supply duct-work

    PurePak® Air Filtration Unit


    The PurePak electrostatic air filtration system protects you and your family from airborne allergens, bacteria, molds, pollen, smoke, fine dust particles and VOCs at a fraction of the cost of other filtration systems on the market.

    The key to cleaner, healthier air.

    • 97% capture efficiency of contaminants down to .3 microns
    • Safe, patented operation does not create ozone
    • Easy, low-cost maintenance
    • 5-year powerhead warranty

    SmartSeal Leak Proof Supply Duct


    smart-seal-leakproof-duct_6 SmartSeal’s unique seals are proven to be 100% leak resistant thus reducing energy costs by reducing duct-loss. The average ducted system can lose between 25-40% of the energy generated by the air handler resulting increased energy consumption. Not only does SmartSeal reduce energy consumption it ensures clean indoor air quality as well.


    • 100% Leak Resistant (to 10″ W.C.)
    • SmartSeal’s slip-fit joint connections with patent-pending gasket system.
    • Recyclable Material
    • Made from up to 58% Recycled Materials
    • LEED points eligible

    SpacePak At-A-Glance



    Cool, Evenly Distributed Air

    The basic difference between SpacePak and other air conditioning systems is the way SpacePak actively circulates air within the room and throughout the structure’s entire living/working space. Circulating the air more effectively is what makes a home with SpacePak central air so uniformly comfortable: no cold or warm spots, no drafts, and up to 30% more humidity removed.Conventional central air systems merely drop cold air in at the ceiling; the distribution of cool air is haphazard, leading to over-cooling in some spots or drafts in others.

    Window air conditioner units or mini-splits require noisy fans within the living space to blow the air around, and there is no overall circulation of the home’s air.

    Small, Flexible Tubing Instead of Sheet Metal Ductwork

    A central heating or cooling system designed to actively circulate air can use smaller ducts than conventional systems; 2 inch mini duct insulated supply tubing keeps the air moving consistently—like pouring water from a pitcher. This smaller duct allows SpacePak to use flexible tubing to distribute the air instead of bulky sheet metal ductwork.

    This tubing is seamless, so it doesn’t waste energy through leaks like sheet metal. And it’s flexible, so passages have no corners to accumulate dust, pollen, or mold. The tubing’s narrow diameter allows it to be placed in the spaces behind walls, floors, and ceilings: it can be installed with virtually no disruption to livable space, nor to interior architectural features.

    Central Air Built Around the Space You Have… or Want

    SpacePak can be installed into either new construction or an existing structure. Either way, the simplicity of SpacePak’s sized-to-fit tubular ducts requires just a fraction of the installation time and cost associated with having sheet metal ductwork fabricated and installed. No other company has more experience designing and building central air systems with the flexibility to fit into virtually any building. SpacePak is ideal for:

    • historic buildings
    • buildings without existing ductwork
    • buildings that utilize radiant heat systems
    • open floor plans
    • log homes/cabins
    • brownstones or row houses
    • lofts
    • additions
    • modular homes


    The Basics of a SpacePak Central Air System

    While every installation is configured specially to the individual home’s unique requirements, fundamentally the SpacePak system consists of the following components as labeled in the diagram below. Each one is briefly described below.



    B.Sound Attenuators

    C.Kwik Connects

    D.Flexible Ducts


    F.Fan Coil Unit

    G.Return Air Duct

    H.Return Air Box/PurePak Air Cleaner (optional)


    AOutlets: How the conditioned air enters the living space. These 5″ diameter outlets (the size of a music CD; much smaller than conventional register grilles) can be placed in the ceiling, wall, or floor.

    BSound Attenuators: Short lengths of flexible, baffled tubing. These tubes greatly reduce the audible sounds produced in the air movement process.

    CKwik Connects: A no-tools-required system that quickly and easily joins the flexible ducts to sound attenuators and the plenum. Kwik Connects virtually eliminate leakage, improving efficiency, and greatly reduce install time.

    DFlexible Supply Tubing: These flexible, narrow, tubular ducts enable SpacePak to bring central air throughout the house within the normal space between walls, ceilings, or floors: no extensive renovation work. The number of ducts would be based on the size of the fan coil unit.

    EPlenum: Carries air to the different ducts which distribute it throughout the house. The plenum fits within the attic, basement, or crawl space where the fan coil unit is installed.

    FFan Coil Unit: The fan distributes air through the plenum; the coils cool (or heat and cool) the air, depending on individual needs and system configuration. Connects to external condenser for cooling; SpacePak is compatible with most condenser brands


    GReturn Duct: The central heating or cooling system contains a blower that gets its air supply through this duct. The air from a room will move towards the lower pressure of the return duct. The duct also contains the properties of sound attenuation and is insulated

    HReturn Air Box: This is the sheet metal box that mounts directly to the return air grill. This allows the mating of the return duct to the grill.

    PurePak Air Cleaner (optional): A patented design that replaces the standard return air box. While 4–6″ pleated filters are not effective at removing contaminants smaller than three microns (such as bacteria, auto exhaust, cooking smoke, dust, or paint pigments), PurePak captures contaminants as small as 0.3 microns with 97% effectiveness.