SpacePak

What SpacePak does

SpacePak is a Westfield, Massachusetts-based manufacturer and the original pioneer of Small Duct High Velocity (SDHV) central heating and cooling systems, operating as a division of privately held conglomerate Mestek (founded 1946, encompassing 45 brands). The company designs and produces 2-inch flexible duct air distribution systems paired with ESP-K Series DX indoor air handlers, complemented by the Solstice line of cold-climate air-to-water heat pumps that deliver hydronic heating, cooling, and domestic hot water without fossil fuels; products are manufactured at a Farmville, North Carolina plant.

Name

SpacePak

Legal name

SpacePak

Website

https://spacepak.com

Company type

Private

Founded year

1946

Operating status

Operating

Headcount range

251–500 employees

Short description

SpacePak designs and manufactures Small Duct High Velocity central HVAC systems and Solstice air-to-water heat pumps, sold exclusively through factory-certified contractors across the U.S. and Canada.

Ownership category

akta.pro rank

Product category

HVAC Equipment Manufacturing

NAICS

Air-Conditioning and Warm Air Heating Equipment and Commercial and Industrial Refrigeration Equipment Manufacturing (333415), Heating Equipment (except Warm Air Furnaces) Manufacturing (333414), Industrial and Commercial Fan and Blower and Air Purification Equipment Manufacturing (333413)

SIC

Air-Cond & Warm Air Heatg Equip & Comm & Indl Refrig Equip (3585), Industrial & Commercial Fans & Blowers & Air Purifing Equip (3564), Heating Equipment, Except Electric & Warm Air Furnaces (3433)

akta.pro primary industry

Residential HVAC System Installation (Furnace/AC/Heat Pump) (HSAOAGAA)

akta.pro secondary industries

Ductwork Installation & Replacement (Supply/Return) (HSAOAGAC), Ductwork, Duct Fittings & Air Distribution (Diffusers/Grilles/Registers) (IMADANAC), Heat Exchangers, Coils & Hydronic HVAC Components (IMADANAF)

Keywords

• Small duct HVAC systems
• Air-to-water heat pumps
• High velocity cooling
• Hydronic heating systems
• Central air distribution

Headquarters

HQ city

Westfield

HQ country

United States

HQ region

North America

Offices3 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Operations, Personnel, Marketing or Sales, Technology or R&D, Infrastructure

Revenue model

1. HVAC Equipment Sales: SpacePak manufactures and sells Small Duct High Velocity systems, air handlers, and air-to-water heat pumps. Products are sold exclusively through stocking HVAC distributors to certified contractors who then install and sell to end customers. Equipment pricing varies by system size and configuration, with costs heavily dependent on labor for installation.
2. Parts and Supplies: SpacePak operates an online store selling outlet plugs, PurePak filters, and other maintenance supplies directly to existing system owners.
3. Extended Warranty Programs: Extended 5-year warranty available for systems installed by Certified SpacePak Contractors, providing additional revenue stream from warranty coverage.

Pricing tiers

Go-to-market motion3 records

Distribution channels4 records

Marketing channels7 records

Core offering

SpacePak manufactures and sells Small Duct High Velocity (SDHV) central heating and cooling systems that use 2-inch flexible pre-insulated ducts to deliver central air without bulky ductwork or major renovation. The company also designs and produces Solstice air-to-water heat pumps providing hydronic heating, cooling, and domestic hot water without fossil fuels. Equipment is manufactured in Farmville, NC and sold exclusively through stocking HVAC distributors to a nationwide network of Certified SpacePak Contractors trained via The Reed Institute.

Product overview

SpacePak offers a comprehensive portfolio of HVAC products organized around two main systems: Small Duct High Velocity (SDHV) central air conditioning/heating and Solstice air-to-water heat pumps for hydronic applications. The SDHV system consists of ESP-K Series indoor air handlers, flexible 2-inch ductwork, and small vents with add-on PurePak air quality and ZonePak zoning modules. The hydronic portfolio includes Solstice R32 Series, Inverter Monobloc (SIM), Inverter Extreme (ILAHP), and Inverter Split (SIS) heat pumps, complemented by hydronic fan coils (HighWall, ThinWall, WCSP), buffer tanks, WPAK heating coils, and SSIC control modules. Products are sold through certified contractors with factory training via The Reed Institute, backed by extended warranties for certified installers.

Differentiator

Problem solved

Functional benefit

Products and services

• Small Duct High Velocity (SDHV) Central Air System The original Small Duct High Velocity central heating and cooling system designed for retrofits, historic homes, custom homes, and new construction. Uses 2-inch flexible pre-insulated ducts that fit discretely inside wall and floor cavities with small round vents available in dozens of finishes. Targets homeowners and builders needing central air without bulky ductwork or major renovation.
• ESP-K Series DX Indoor Air Handler DX Indoor Air Handler serving as the heart of the Small Duct High Velocity air distribution system. Features refrigerant leak detection, A2L compliance for R32 and R454B refrigerants, electrofin-coated copper/aluminum coil, available in horizontal and vertical models. Sold to HVAC contractors for residential central air installations.
• Solstice R32 Series Cold climate monobloc air-to-water heat pump utilizing low GWP R32 refrigerant with EVI compressor technology. All-in-one solution for hydronic heating, cooling, and domestic hot water without fossil fuels. Available in 1.5-, 3-, and 5-ton models with capacities from 3,600-72,000 BTU/hr. Heats down to -22°F delivering water temperatures up to 140°F. Targets eco-conscious homeowners and electrification projects.
• Solstice Inverter Monobloc (SIM) Air-source heat pump ideal for various climates offering low ambient cooling. Monobloc design keeps all refrigerant outside occupied space. Available in 3-ton (SIM-036) and 5-ton (SIM-060) models with Mitsubishi inverter compressor. Targets hydronic heating applications.
• Solstice Inverter Extreme (ILAHP) Cold climate monobloc air-source heat pump for hydronic heating, cooling, and domestic hot water. Delivers water temperatures up to 130°F down to -22°F outdoor air. Features Toshiba EVI inverter compressor with 4-ton capacity. Sold to certified HVAC contractors for residential and light commercial installations.
• Solstice Inverter Split (SIS) Split design air-source heat pump providing flexibility to reduce glycol use in hydronic loop. Panasonic EVI inverter compressor, 5-ton capacity, operates down to -20°F with indoor and outdoor units and 35ft refrigerant line set. For hydronic heating and cooling systems requiring split configuration.
• Hydronic Fan Coils Low temperature hydronic fan coils for distributing heated/cooled water throughout hydronic systems. Includes HighWall, ThinWall (White Glass), and WCSP (Small Duct High Velocity Hydronic) models. Sold to contractors for hydronic heating and cooling system installations.
• Buffer Tanks (BT Series) Storage tanks for hydronic systems providing thermal storage and system buffering. Covered by standard 10-year warranty. Sold to contractors for hydronic heating system installations.
• SpacePak Extended Warranty Program Extended warranty program providing 10-year compressor and 5-year parts coverage on inverter heat pumps and 5-year parts on SDHV and hydronic equipment. Requires installation by Certified SpacePak Contractors and product registration. Generates recurring warranty revenue stream.

Quantifiable outcome

• 30% more humidity removal than conventional central air systems
• +6 more outcomes

Named customers5 records

Segments4 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration3 records

Feature7 records

Partnerships

Eight partnerships are on record, tiered regional, core and minor.

• Tech Clean CaliforniaregionalGTM or Marketing Partner · 12 December 2024Tech Clean California launched an air-to-water heat pump rebate program where SpacePak's Solstice R32 models (4- and 5-ton) qualify for incentives: $2,500 for heating-only systems and $10,000 for combination systems providing both space and water heating.
• Wales DarbycoreChannel Partner/ Reseller/ Distributor · 15 September 2022SpacePak's New York City manufacturer's representative who exhibited alongside SpacePak at BuildingEnergy NYC 2022 conference. Wales Darby provides local sales and technical support for SpacePak products in the NYC metropolitan area.
• NESEA (Northeast Sustainable Energy Association)coreStrategic or Co-development Partner · 27 May 2022SpacePak became a member of NESEA, a 501(c)(3) membership organization promoting sustainable energy practices in the built environment since 1975. NESEA operates primarily in the northeastern US and helps high-performance building professionals improve practices through networking and learning. SpacePak participates in BuildingEnergy conferences and tradeshows.
• Efficiency VermontregionalGTM or Marketing Partner · 10 July 2019Vermont's statewide utility offering rebates for air-to-water heat pump installations. Vermont residents can earn up to $6,500 cash back through $1,000/ton rebate (max 6 tons) plus $500 income-eligible bonus. SpacePak's Solstice Extreme qualifies for these rebates.
• Habitat for Humanity (Rutland, Vermont Chapter)minorGTM or Marketing Partner · 8 May 2018SpacePak teamed up with Habitat for Humanity Rutland, Vermont to support their project building a new, highly energy efficient home for a family in need of affordable housing. SpacePak's cold-climate-tested air-to-water heat pump was identified as the ideal solution by Efficiency Vermont.
• John SiegenthalercoreStrategic or Co-development PartnerWaterWorks is a free application and technical education platform authored by John Siegenthaler, a renowned hydronics expert. The series provides hydronic application solutions for industry professionals and helps accelerate adoption of SpacePak's hydronic product offering.
• FlowTechregionalChannel Partner/ Reseller/ DistributorFlowTech represents SpacePak products in California, providing expert support for all aspects of SpacePak equipment projects, particularly related to the Tech Clean California rebate program.
• Vermont Green Building NetworkminorGTM or Marketing PartnerSpacePak is a proud member of the Vermont Green Building Network, an organization focused on sustainable building practices in Vermont.

Scale indicators9 records

Recent moves6 records

Expansion highlights4 records

Broad incumbents

• Bosch Home Comfort: Bosch manufactures residential heat pumps, air handlers, and geothermal systems, including inverter air-to-water heat pumps with European hydronic expertise. Its broad portfolio overlaps with SpacePak across hydronic heat pump and air handler categories.
• Trane Technologies: Trane Technologies is a global HVAC leader offering a broad residential and light commercial heat pump portfolio (including the recently expanded cold-climate XV80 line). Its broad distribution and brand recognition position it as a direct incumbent competitor to SpacePak's electrification and high-efficiency offerings.
• Lennox International: Lennox is a major US HVAC manufacturer serving residential and light commercial markets with high-efficiency heat pumps, ducted systems, and the Dave Lennox Signature Collection. It competes in the premium residential retrofit space where SpacePak also positions.
• Daikin: Daikin is the world's largest HVAC manufacturer and a leading inverter-driven heat pump provider globally. Its breadth across residential, commercial, and refrigerant technologies (including R-32) places it as a key broad incumbent competing for the same electrification-driven projects as SpacePak.
• Carrier: Carrier is one of the largest HVAC OEMs globally, offering complete residential systems including heat pumps, ducted AC, and a growing array of cold-climate air-source heat pumps that compete directly with SpacePak's Solstice line for decarbonization-driven retrofits.
• Mitsubishi Electric (US HVAC): Mitsubishi is the dominant player in ductless mini-split heat pumps (the leading electrification technology in retrofits). Although tech differs, Mitsubishi is the primary substitute that SpacePak's all-electric and cold-climate positioning competes against for decarbonization-driven installs.
• Rinnai: Rinnai is a leading tankless water heater brand expanding into heat pump water heaters (REHP). Both Rinnai and SpacePak serve the decarbonization/electrification retrofit market with sealed-combustion and heat pump technologies, particularly for homes converting from fossil fuel systems.

Direct peers

• Unico: Unico is the only other major manufacturer of Small Duct High Velocity central heating and cooling systems, offering a nearly identical 1-2 inch flexible duct architecture targeted at retrofits, historic homes, and limited mechanical spaces. It is the closest direct competitor to SpacePak's SDHV product line.

Emerging players

• Fantech: Fantech produces ventilation fans, energy recovery ventilators (ERVs), and air distribution components integral to high-performance home HVAC. Its products complement or substitute for portions of SpacePak's SDHV air distribution and indoor air quality offerings (PurePak).
• Navien: Navien is a leading manufacturer of condensing combi-boilers and now condensing heat pump water heaters. Its push into high-efficiency hydronic and heat pump products overlaps with SpacePak's hydronic offering for homeowners transitioning away from fossil fuels.

Market position

Strengths4 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• Instagraminstagram.com/spacepaksystem

Compliance3 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about SpacePak