And Plumbing




Safety, efficiency, and functionality are never accidental. The Mechanical Engineers at PACE work tirelessly to design the perfect heating, ventilation, air conditioning, and plumbing systems to make your commercial building project a success. Whether designing brand new or troubleshooting an existing system, the team at PACE can assist you. We’re committed to providing the best possible service on time and budget from start to finish.

Many projects require the coordination of multiple engineering specialties. If you’re tackling a large job, consider including our other departments to streamline your project.


HVAC Design

  • Feasibility Studies
  • Heating, Cooling, and Ventilation Calculations
  • HVAC System Types: Chiller, Boiler, Hydronic, Packaged, Mini-Split, Multihead-Split, Variable Refrigerant Volume, Energy Recovery Ventilation, Kitchen Hoods, Commercial and Industrial Exhaust, 100% Outside Air, Evaporative Cooling, Gas Heat, Radiant, and Electric Resistance Heating.
  • Duct System Design
  • Development of Construction Drawings and Documents
  • Specifications
  • Construction administration such as preparing addendums, responding to RFI’s, submittal reviews, and overall construction support.
  • Cost Estimation Services
  • Title 24 California Energy Code Mechanical Compliance Forms

Example Projects: State-Mandated Wastewater Treatment Plant Improvements, Enterprise ESD-Mistletoe ES Gymnasium


  • Feasibility Studies and Evaluations of Existing Systems
  • Gas Utility Coordination
  • Building and Generator Natural and LPG Fuel System Design
  • Water Heating and Storage Design
  • Cold, Hot, and Hot Water Recirculation System Design
  • Waste, Vent, and Roof Drainage System Design
  • Grease, Sand, and Oil Interceptor Design
  • Development of Construction Drawings and Documents
  • Specifications
  • Construction administration such as preparing addendums, responding to RFI’s, submittal reviews, and overall construction support.
  • Cost Estimation Services
  • Title 24 California Energy Code Plumbing Compliance Forms

Example Projects: Butte County Evidence Storage and Morgue, Charter Communications Tenant Improvement Project

Title 24 Building Envelope Compliance calculations

  • Prescriptive and Performance Calculations for New and Altered Building Envelopes. 

Facilities We Service

  • Commercial
    • Offices, Community Centers, Tenant Infills, and Commercial and School Kitchens
  • Municipal
    • Support Facilities for water and waste treatment plants, pump stations, utility power plants, and fire stations.
  • Institutional and Healthcare
    • Skilled Nursing Facilities, Hospitals, Medical Office Buildings
  • Educational
    • Preschool, K-12, College, and Universities
  • Light Industrial
    • Industrial Exhaust, Ventilation, Plumbing, Heating, and Cooling for Fabrication and Maintenance.
  • Generator and Fuel Gas Systems

Hire a Mechanical Engineer from the team you can trust

We’re active members in these trusted organizations

APWA - American Public Works Association


An excellent firm overall. Nobody else is in the same league and no project is unimportant enough to experiment with.”

Al Cathey
Public Works Director, Shasta County

I was raised in a Civil Engineering family business and taught to understand client/firm relations are paramount. PACE provides the personal touch of a small-town firm, while providing a level of engineering services unparalleled in the Pacific Northwest.”

Matthew Bray
Public Works Director, City of Yreka

“I have worked with the PACE staff now for decades in various capacities and have always enjoyed the relationship and the professional attitude in how they approach their work responsibilities. They are always fair and make every attempt to treat both their customers and the various vendors/suppliers with the respect they deserve and in the end, it has produced many successful projects through the years.”

Jim Lewis
Electrical Technician Supervisor, City of Redding

They understand and appreciate my efforts to establish for our District a very long-term engineering guided relationship such that together we will have a consistently stable, historical facilities knowledgeable, and economically viable partnership not centered around single individuals, but with sufficient personnel depth for decades of sustainment.”

Cecil Ray
General Manager, Fall River Valley Community Services District

I have never had a bad experience when PACE is involved. Every member of their team is always available to help in any way they can. They are a model A/E company to which other companies should aspire to be.

Brian McFarlane
Electrical Contractor, M&J Electric

One of the best places I’ve ever done business with.”

Forrest Goehring
Owner, G&S Construction

“PACE Engineering has a professional staff that is very helpful in assisting in our projects. I look forward to our continued working together and the excellent assistance we get for the staff!”

John Harrington
Owner, Power Up Electric

“Paul Reuter is great to work with – always available when needed and provides excellent support. Really appreciate all his efforts and focus given our tiny nature – Thanks Paul!”

Mark Oliver
Board of Directors, Centerville CSD

“We have worked with and alongside numerous firms throughout the years and none of them quite measure up to the services provided at PACE.

Jason Andrews
Electrical Foreman, Stephens Electrical, Inc.

“Want you to know that I greatly appreciate working with you. You and your firm are very impressive. We are fortunate to have your capabilities and responsiveness. I have had the opportunity to work with a variety of engineering firms and PACE really does top notch work.”

Bruce Pope
Former City Manager, City of Mt. Shasta