24-Hour Emergency Service314-291-0100

Comprehensive Mechanical Contracting Solutions

When you want more than just a bid - think Jarrell

We have acquired H&A Mechanical Services, a commercial refrigeration service and installation company, bringing this complex industry into our in-house design build capabilities.

Intelligent Solutions Yield Better Control

When you work with Jarrell you get more than just a bid. We provide comprehensive, intelligent solutions that ensure consistent, comfortable temperatures in a cost-effective and energy efficient manner.

Learn More

Single Source For Time + Cost Savings

We are your single-source mechanical contractor dedicated to providing quality service and value to every project since 1954. Our specialty lies in developing creative Design/Build solutions that maximize value for general contractors, building owners and building managers alike.

  Design
Icon for Design

Design

Our design team is focused on "Value Engineering".
  • 15 Engineers
  • 8 P.E.s
  • 4 CAD/BIM specialists
  Controls
Icon Controls

Controls

Our controls team can help save as much as 20% on energy.
  • Utilize an Open Protocol approach
  • NEBB Certified
  • Specialists in Direct Digital Control systems
  Prefab Shops
Icon for Prefab Shops

Prefab Shops

Our prefab shops allow us to manufacture in a controlled environment.
  • 21,500 square foot sheet metal shop
  • 16,000 square foot pipe fabrication shop
  Monitoring
Icon for Monitoring

Monitoring

Our monitoring team can spot issues before they become problems.
  • 24/7 Automated Monitoring
  • Experience in over 250 buildings
  Service
Icon for Service

Service

Our service teams handle everything from start up to warranties.
  • 100+ Service Vans
  • 654 Service Contracts
  • NEBB Certified
  Energy Optimization
Icon for Energy Optimization

Energy Optimization

Our entire team helps customers save energy and money.
  • Energy Audits
  • Retro-Commissioning
  • Energy Rebates
Monitor Showing Temperature Control Monitoring Software

When you want to ensure tenant comfort

Think Jarrell

Group of Employees Holding Up Check from Ameren UE

When you want to operate as efficiently as possible

Think Jarrell

Jarrell Employee

When you need a team you can rely on

Think Jarrell

Previous
Next

Our Work

 
Ronald McDonald House

Ronald McDonald HouseSt. Louis, MO

View Story

 
Front Page Lofts

Front Page LoftsSt. Louis, MO

View Story

 
Olive Crossing

Olive CrossingSt. Louis, MO

View Story

View All

Jarrell Background

Icon for Engineers

15 Engineers

Experienced, intelligent in-house engineers with a focus on "value engineering".

Icon for NEBB Certified

NEBB Certified

Our NEBB certified installers and technicians are experts in performing in-house testing and balancing.

Icon for Service Vans

100+ Service Vans

With Jarrell, you can rest easy knowing we have one of the cities largest fleets of vehicle service technicians.

Icon for Monitoring

24/7 Monitoring

Our 24/7 remote monitoring ensure total comfort for over 250 buildings and counting...

Specialists in Saving Energy

Jarrell's Green Energy Management Solutions (GEMS) team works with building owners and managers to find cost effective solutions to reduce energy usage, improve occupant comfort, cut costs and qualify for rebates and incentives.

Learn More

Continutal Improvements

Emergency: 314-291-0100

Request Energy Audit

Schedule Maintenance

General Inquiries