Excel Mechanical

What Excel Mechanical does

Excel Mechanical, Inc. is a Tucson, Arizona-based mechanical contracting company founded in 1986 by James (Jim) Zarling, providing commercial and residential HVAC and plumbing services across Southern Arizona. The company employs 51-100 people and operates from a single headquarters at 3565 E Golf Links Rd, Tucson, AZ 85713, holding Arizona ROC contractor licenses (#096704, #096695, #167371). Service delivery is direct field-based across Tucson, Marana, Oro Valley, Sahuarita, Sierra Vista, Casa Grande, and surrounding areas.

The company's core offerings are HVAC and plumbing services — sales, installation, preventative maintenance, diagnostics, and repair — supplemented by specialized lines including patented Aeroseal/GreenSeal duct sealing for commercial buildings, in-house custom sheet metal fabrication (General Sheet Metal / GSM producing ductwork, flashing, caps, and drain pans), certified backflow testing, and airflow calibration. It operates as a Southwest Gas Co. Preferred Contractor and employs certified technicians holding Med Gas, LEED AP, Backflow Testing, EPA, OSHA 10, and CPC credentials, enabling work in regulated healthcare, government, and institutional settings. Named customers include Tucson Medical Center, Banner Casa Grande Medical Center, Sahuarita USD, Pima College, ADOT, Quiktrip, and Interceramic, with 170+ projects completed across healthcare, education, government/tribal, retail/commercial, multi-family, restaurants, and auto/gas-station verticals.

Commercially, Excel Mechanical runs a sales-led, quote-based professional services model with pay-as-you-go billing, no public pricing, and no digital self-serve channels — all service requests are initiated via phone, email, or web contact forms. The company remains founder/owner-controlled (Jim Zarling as CEO, his son TJ Zarling as President since 2014, with three VPs overseeing Operations, Construction, and Finance), has no external investors or PE backing, and shows no M&A, funding, or AI/ML initiatives in the source data. It is a long-tenured regional mechanical contractor whose growth has come from service-line expansion and incremental geographic spread within Southern Arizona.

Name

Excel Mechanical

Legal name

Excel Mechanical, Inc.

Website

https://excelmechanicalinc.com

Company type

Private

Founded year

1986

Operating status

Operating

Headcount range

51–100 employees

Short description

Excel Mechanical is a Tucson, Arizona-based mechanical contractor founded in 1986 that delivers commercial and residential HVAC, plumbing, custom sheet metal fabrication, and Aeroseal duct-sealing services across Southern Arizona under Arizona ROC contractor licenses.

Ownership category

akta.pro rank

Product category

HVAC and Plumbing Mechanical Contracting

NAICS

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

akta.pro primary industry

HVAC Installation, Service & Repair (IMAIABAA)

akta.pro secondary industries

HVAC & Refrigeration Contracting (IMAFALAB), Plumbing (Residential & Commercial) (EDAOACAA), Energy Services (Retrofits/Commissioning/Testing & Balancing) (IMAIABAI), Air Handling Units (AHUs) & Rooftop Units (RTUs) (IMADANAA)

Keywords

• Commercial HVAC services
• Residential plumbing services
• Mechanical contracting
• Sheet metal fabrication
• Duct sealing services

Headquarters

HQ city

Tucson

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. HVAC Services: Revenue from heating, ventilation, and air conditioning services including sales, installation, maintenance, repairs, and preventative maintenance for commercial and residential clients.
2. Plumbing Services: Revenue from plumbing services including new installation, repairs, backflow certification, camera/locate services, and routine maintenance for commercial and residential properties.

Pricing tiers

Go-to-market motion1 record

Distribution channels2 records

Marketing channels3 records

Core offering

Excel Mechanical provides HVAC and plumbing services for commercial, industrial, and residential customers across Southern Arizona, including sales, installation, preventative maintenance, repair, and custom sheet metal fabrication. The company also offers specialized capabilities such as certified Aeroseal duct sealing for commercial buildings, backflow certification, and airflow calibration to support new construction, tenant improvements, retrofit, and replacement projects.

Product overview

Excel Mechanical is a full-service mechanical contracting company offering HVAC and Plumbing services. Founded in 1986, the company provides a unified portfolio of services spanning sales, installation, maintenance, and repair for both commercial and residential clients across Southern Arizona. The core product lines are HVAC Services (heating, ventilation, air conditioning) and Plumbing Services (water, drainage, gas systems), supplemented by specialized offerings including Duct Sealing using patented Aeroseal technology, Custom Sheet Metal Fabrication, Backflow Certification, and Airflow Calibration. The company specializes in new construction, tenant improvements, custom homes, and retrofit projects serving sectors including healthcare, schools, retail, government/tribal, restaurants, auto/gas stations, and multi-family residential properties.

Differentiator

Problem solved

Functional benefit

Products and services

• HVAC Services Comprehensive heating, ventilation, and air conditioning solutions including diagnosis, troubleshooting, preventative maintenance, sales, service, installation, and custom sheet metal fabrication for commercial, industrial, and residential properties across Southern Arizona.
• Plumbing Services Full-service plumbing including diagnosis, troubleshooting, preventative maintenance, camera/locate services, backflow certification, sales, service, and installation for water, drainage, and gas systems serving commercial and residential customers.
• Custom Sheet Metal Fabrication

Named customers7 records

Segments2 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature1 record

Partnerships

Two partnerships are on record, tiered core.

• GreenSeal (Aeroseal)coreTechnology or IntegrationExcel Mechanical is a certified applicator of GreenSeal/Aeroseal duct sealing technology for commercial buildings. This proprietary technology allows for effective and affordable sealing of ductwork systems from within, and the company conducts thorough diagnostic tests before and after the sealing process.
• Southwest Gas CorporationcoreStrategic or Co-development PartnerExcel Mechanical holds status as a Southwest Gas Co. Preferred Contractor, indicating a preferred business relationship for gas-related HVAC work in the Southern Arizona region.

Scale indicators4 records

Recent moves5 records

Expansion highlights4 records

Direct peers

• TDIndustries: Employee-owned mechanical contractor providing HVAC, plumbing, and building automation across the Southwest. Closely matches Excel's regional mechanical-contractor model, MEP scope, and institutional customer focus.
• Limbach Holdings: Specialty mechanical contractor delivering HVAC, plumbing, and building controls for healthcare, education, and commercial facilities. Direct overlap with Excel's core service lines and institutional customer base.
• RKS Plumbing & Mechanical: Regional mechanical and plumbing contractor serving commercial and residential customers in the U.S. Southwest. Closely comparable to Excel in trade mix, customer verticals, and mid-sized regional service delivery model.
• Comfort Systems USA: National mechanical contracting firm providing HVAC, plumbing, and building automation services to commercial and industrial customers. Highly comparable to Excel Mechanical in service mix and customer profile, though operating at vastly larger scale across multiple U.S. regions.

Broad incumbents

• Johnson Controls: Building technology and HVAC systems OEM with global installation and service operations. Comparable in serving healthcare, education, and government facilities with HVAC and controls, though at much larger scale and with proprietary equipment.
• EMCOR Group: Large diversified facilities and mechanical services contractor with HVAC, plumbing, and electrical capabilities. Same trade mix as Excel but at national scale with broader service breadth, including energy services and large healthcare construction.
• Trane Technologies: Global HVAC and building controls manufacturer with commercial service operations. Overlaps with Excel on commercial HVAC install/service, though Trane is equipment-led with an extensive owned service network.
• Carrier Global: Global HVAC equipment manufacturer and service provider. Comparable in HVAC category leadership and brand familiarity; however, Carrier primarily manufactures and services its own equipment, whereas Excel installs and services multi-brand systems.
• APi Group: Public safety, specialty, and industrial services holding company with mechanical services and HVAC service arms. Comparable end-customer verticals (healthcare, education, commercial) but broader portfolio and global footprint.

Others

• ServiceTitan: Software platform serving HVAC, plumbing, and mechanical contractors. Adjacent ecosystem peer rather than direct competitor, but its tools are used by firms like Excel Mechanical to manage dispatch, sales, and back-office operations.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/wexl4u
• YouTubeyoutube.com/@EMITucson
• Facebookfacebook.com/excelmechanicalinc
• LinkedInlinkedin.com/company/excel-mechanical-inc

Revenue estimate

Valuation estimate

Number of profiles

Profiles10 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 Excel Mechanical