What Conditioned Air Design does

Conditioned Air Design is a commercial heating, ventilation, and air conditioning (HVAC) mechanical contractor serving Southeastern Wisconsin from its West Allis headquarters at 11104 West Becher Street. Founded in August 1968 by Larry Charles and now operated under legal entity General Refrigeration Service LLC, the company designs, installs, services, and maintains HVAC systems for commercial, industrial, and institutional customers — including electronics manufacturing facilities (Foxconn), fitness centers (Wisconsin Athletic Club), automotive dealerships (Russ Darrow Honda), breweries (Raised Grain), office properties (Trusted Media Brands, Pabst Brewery Boiler House No. 10), and manufacturing plants (Glenn Rieder, Norco Manufacturing). As of November 2024, the company operates as a subsidiary within the PremiStar nationwide network of HVAC, building automation, and plumbing branch locations.

The company's technical stack is centered on an in-house design-build model rather than proprietary software. Engineers use AutoCAD for HVAC system layouts and QuoteSoft for automated estimating of labor hours, materials, and accessories. A sheet metal fabrication shop equipped with computerized plasma cutting machines produces galvanized and fiberglass ductwork, curb adapters, tanks, and custom-fabricated parts internally — a capability that allows the company to complete fabrication work in hours rather than days and to supply other HVAC contractors in the region. The company also integrates with commercial building management systems for monitoring and control, and operates 24/7 service dispatch with preventative maintenance contracts.

Revenue is generated through three streams: one-time project-based HVAC design and installation contracts (the largest stream, evidenced by 1,000+ completed system installations); recurring preventative maintenance and service contracts (annual billing cadence) that produce ongoing relationship revenue from the installed base; and external sales of custom-fabricated ductwork to other regional HVAC contractors. The go-to-market motion is enterprise field sales — direct outreach, bid invites, and relationship-based business development targeting commercial property owners, general contractors, and facility managers. The company self-reports generating over $10 million in annual revenue and is described as a rapidly growing enterprise, with a 50+ year track record in the Southeastern Wisconsin market.

Name

Conditioned Air Design

Legal name

General Refrigeration Service LLC

Website

https://condairdesign.com

Company type

Private

Founded year

1968

Operating status

Operating

Headcount range

11–50 employees

Short description

Conditioned Air Design is a commercial HVAC mechanical contractor in Southeastern Wisconsin, founded in 1968, providing system design, installation, 24/7 service, and in-house custom sheet metal fabrication to commercial, industrial, and institutional customers, now operating as part of PremiStar.

Ownership category

akta.pro rank

Product category

Commercial HVAC Services

NAICS

Plumbing, Heating, and Air-Conditioning Contractors (238220)

SIC

Auto Controls For Regulating Residential & Comml Environments (3822)

akta.pro primary industry

HVAC Installation, Service & Repair (IMAIABAA)

Keywords

• Commercial HVAC services
• HVAC design installation
• Sheet metal fabrication
• Preventative maintenance
• Mechanical contracting

Headquarters

HQ city

West Allis

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Supply Chain, Marketing or Sales, Infrastructure

Revenue model

1. Commercial HVAC Installation: One-time project-based revenue from design and installation of commercial HVAC systems for new construction and retrofits. Projects range from small commercial spaces to large-scale industrial facilities like Foxconn's 100,000 sq ft manufacturing plant.
2. HVAC Service & Maintenance: Recurring revenue from 24/7 service contracts, preventative maintenance programs, and peak performance maintenance agreements tailored to individual customer needs. Provides ongoing relationship revenue from existing commercial customers.
3. Custom Fabrication: In-house sheet metal and ductwork fabrication for other HVAC contractors in Southeastern Wisconsin, generating revenue from both internal use and external sales of fabricated products.

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels2 records

Core offering

Conditioned Air Design is a commercial HVAC mechanical contractor providing heating, ventilation, and air conditioning system design, installation, 24/7 service, preventative maintenance, and in-house custom sheet metal fabrication for commercial, industrial, and institutional facilities in Southeastern Wisconsin. The company handles projects ranging from new construction and retrofits to historical building renovations, supplemented by fabricated ductwork sales to other HVAC contractors in the region.

Product overview

Conditioned Air Design offers a unified portfolio of commercial HVAC services for Southeastern Wisconsin, encompassing the full project lifecycle from pre-construction design through fabrication, installation, and ongoing 24/7 service and maintenance. The company's core offerings include Custom Sheet Metal Fabrication (leveraging computerized plasma equipment for precision ductwork), Commercial HVAC Design & Installation (for new construction and remodels), Rectangular Duct & Fittings (with online ordering), Pre-Construction Design Services, and R-22 Phaseout Consultation. These integrated services allow the company to handle projects internally without relying on external suppliers, completing large-scale jobs faster and more cost-effectively than competitors.

Differentiator

Problem solved

Functional benefit

Products and services

• Commercial HVAC Service, Design & Installation Full-service commercial heating, ventilation, and air conditioning services including system design, installation, and 24/7 maintenance for commercial and industrial facilities in Southeastern Wisconsin. Targets commercial property owners, general contractors, and industrial facility operators.
• HVAC Service & Preventative Maintenance 24/7 commercial HVAC service with preventative maintenance contracts, rapid response repairs, and building management systems tailored to individual business needs. Provides ongoing recurring service to existing commercial customers.
• Commercial HVAC Design & Installation HVAC system design and installation for new construction and building remodels, serving manufacturing facilities, historical buildings, and commercial properties with expertise in heat pumps, rooftop units, chillers, furnaces, and radiant heating systems.
• Custom Sheet Metal Fabrication In-house sheet metal fabrication services producing galvanized and fiberglass ductwork, curb adapters, tanks, and custom fabrication needs using computerized plasma machines for precision and efficiency. Serves both internal project needs and external HVAC contractors in Southeastern Wisconsin.
• Rectangular Duct & Fittings Online ordering system for prefabricated rectangular ductwork and fittings including elbows, transitions, offsets, and miscellaneous components for Southeastern Wisconsin HVAC contractors.
• Pre-Construction Design Services Early-stage project collaboration including schematic design, budgeting estimates, and design review services working with general contractors from project inception.
• R-22 Phaseout Consultation Consultation services helping facilities prepare for R-22 refrigerant phaseout through system replacement assessment, retrofit options, or maintenance strategies for existing equipment.

Named customers8 records

Segments4 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

One partnership is on record.

• PremiStarcoreOthers · 13 November 2024PremiStar acquired Conditioned Air Design in November 2024 to expand its commercial HVAC services footprint in Wisconsin. Conditioned Air Design operates as a member of the PremiStar family of companies, collaborating with experts around the country on best practices. PremiStar operates a nationwide footprint of HVAC, building automation, and plumbing branch locations serving commercial, municipal, educational, and industrial market segments.

Scale indicators4 records

Recent moves9 records

Expansion highlights5 records

Broad incumbents

• EMCOR Group: Diversified national mechanical and electrical services giant with substantial commercial HVAC installation and service capabilities, including complex industrial projects similar to CAD's Foxconn and Norco engagements.
• Carrier Global: Global HVAC equipment OEM that also operates a commercial HVAC and building solutions services business, providing installation, controls, and maintenance for commercial properties comparable to CAD's customer base.
• Trane Technologies: Global HVAC and building technologies OEM with a growing commercial services footprint across installed base maintenance and controls integration — overlapping with CAD's Trane/Carrier/American Standard/Lennox-branded install work.
• Comfort Systems USA: Large publicly traded national mechanical contractor providing HVAC installation, service, and building automation. Overlaps with CAD across virtually all service lines but at significantly greater scale.
• APi Group: Public safety and specialty services consolidator with significant HVAC and mechanical contracting operations in the U.S. Overlaps with CAD in commercial and industrial HVAC services.

Others

• PremiStar: Parent company of CAD since the November 2024 acquisition. Operates a nationwide network of HVAC, building automation, and plumbing branches serving commercial, municipal, educational, and industrial markets.

Regional players

• J.F. Ahern Co. Wisconsin-based mechanical and fire protection contractor with deep Midwest roots. Comparable regional footprint, customer mix, and HVAC/fabrication capabilities to CAD in Wisconsin.

Direct peers

• Limbach Holdings: Pure-play publicly traded commercial HVAC, plumbing, and controls mechanical contractor. Closely mirrors CAD's design-build-service-fabrication model across multiple U.S. regions.
• Service Logic: Commercial HVAC, plumbing, and controls services platform with a recurring service-heavy model. Highly comparable go-to-market and revenue mix for CAD.
• AMS Mechanical Systems: Midwest-based commercial HVAC, plumbing, and process piping mechanical contractor serving industrial and institutional customers. Closely comparable in project type, fabrication capability, and customer segments.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks7 records

Key highlights7 records

Customer concentration

Revenue estimate

Valuation estimate

Number of profiles

Profiles4 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 Conditioned Air Design