Business Details
50+ Years
experience
Custom HVAC Solutions for Critical Environments
Founded in 1952, Ellis & Watts specializes in engineering and manufacturing safety-critical HVAC systems, portable structures, and specialty components for nuclear, military, aerospace, hazardous waste processing, research laboratories, and medical imaging applications. Our ISO 9001-certified quality program meets ASME NQA-1 requirements and is approved by NUPIC and NIAC. We participate in ASME nuclear committees to ensure code compliance and deliver systems tested for safe operation in harsh environments.Backed by Marmon and Berkshire Hathaway, our engineers are recognized authorities in mission-critical design, with hundreds of years of combined experience developing solutions for extreme conditions. We provide lifetime support for all installations, adhering to nuclear-grade safety, medical-grade quality, and military-grade durability standards.
Services
HVAC Systems
Portable Structures
Specialty Components
Replacement Parts
Service & Maintenance
Details
- Year established: 1952
Highlights and features
- We offer 70+ years of experience in nuclear-grade HVAC engineering.
- Our ISO 9001-certified quality program meets ASME NQA-1 requirements.
- We participate in ASME nuclear code review committees globally.
- Our engineers have hundreds of years of combined mission-critical expertise.
- We provide lifetime support for all installed systems and components.
Associations and certifications
- ISO 9001
- ASME NQA-1
- NUPIC
- NIAC
Services
HVAC Systems
We design and manufacture custom HVAC systems for extreme environments. Our solutions include condensing units, air filtration systems, and temperature-controlled components meeting ASME and IEEE standards. These systems ensure reliable operation in nuclear reactors, medical facilities, and military installations worldwide.
Portable Structures
Our portable structures include ISO-type shelters, command centers, and precision instrumentation systems. Engineered for rapid deployment in harsh conditions, these structures meet military specifications and provide secure environments for critical operations across global defense and research applications.
Specialty Components
We produce specialized components like diagnostic imaging chillers and pressurizer dehydrators. These precision-engineered parts meet stringent nuclear, medical, and military standards, ensuring optimal performance in safety-critical systems requiring zero failure tolerance.
Replacement Parts
Our replacement parts division provides nuclear-grade HVAC components, specialty system parts, and portable structure elements. Backed by lifetime support commitments, these parts ensure continued operation of mission-critical systems across energy, defense, and healthcare sectors.
Service & Maintenance
We offer comprehensive service programs including chiller maintenance and system diagnostics. Our engineers provide lifetime technical support for all installations, ensuring sustained compliance with evolving industry standards and maintaining operational integrity in critical environments.
Questions
What industries does Ellis & Watts serve?
We serve nuclear power, military, aerospace, hazardous waste processing, research laboratories, and medical imaging industries with specialized HVAC solutions.
Are your products ISO certified?
Yes, our quality program is ISO 9001 registered and meets ASME NQA-1 requirements for nuclear applications.
Do you provide replacement parts for legacy systems?
We offer replacement parts for both nuclear and non-nuclear HVAC systems, including specialty components and portable structure elements.
How long have you been in business?
We've been engineering critical performance systems since 1952, with over 70 years of experience in mission-critical HVAC solutions.
What makes your products different?
Our products combine nuclear-grade safety, medical-grade quality, and military-grade durability, designed for operation in the harshest environments.
Do you support international projects?
Yes, we've completed projects in over 20 countries across energy, defense, and research sectors with global compliance standards.
