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Southwest Roots, Global Reach

RH Systems was founded by Bob Hardy in 1998 in Albuquerque, and relocated to Phoenix in 2017
Our founder isn’t just our head technician—he’s an industry leader. With a lifetime of knowledge and countless contributions advancing our technology forward, he’s been called one of the brightest minds in our field. But we just call him Bob.

RH Systems

1225 W. Houston Avenue
Gilbert, AZ 85233 USA

Hours: Monday - Friday,
9 a.m. - 5 p.m. 

Phone: 480-926-1955
Fax: 866-891-3399

Email: sales@rhs.com

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Bob’s Story

With our expert team, innovative technology, and commitment to precision, we stand out in the industry. Rely on us for dependable, accurate solutions that adhere to stringent global standards.
Innovative Technology
We deliver innovative technology through precision-engineered solutions and products designed for unmatched accuracy and ease of use. By blending advanced engineering with customer-focused innovation, we provide reliable tools that simplify complex challenges.
Expertise & Experience
With decades of expertise in precision humidity and temperature calibration, RH Systems has built a reputation for engineering reliable, industry-leading solutions trusted by research institutions, manufacturers, and laboratories worldwide. Our proven track record of innovation—led by Bob Hardy’s pioneering work in the industry —demonstrates our unwavering commitment to delivering accurate, dependable solutions that professionals rely on every day.
Global Standards Compliance
RH Systems' calibration equipment meets and exceeds global standards, ensuring consistent accuracy for industries requiring internationally recognized precision in humidity and temperature solutions. We give our worldwide customers confidence in their measurements.

RH Systems Phoenix

And no matter where Bob and RH Systems is located, our track record of quality and innovation has provided top-tier solutions for military and government contracts with unmatched precision.
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RHS Wins

Recently celebrating 25 years of RH Systems, we’re proud to share our accomplishments, leading the industry with innovative technology:
NVLAP ISO 17025 Accreditation
Awarded military contracts for CGS-240 Humidity Generator
Patented G3 Frost Point Generator design
PT12 Multi-channel Precision Thermometer 

We call Arizona home

And no matter where Bob and RH Systems is located, our track record of quality and innovation has provided top-tier solutions for military and government contracts with unmatched precision.
Learn More About On-Site Analysis

Frequently Asked Questions

What are your hours?

9am – 5pm Arizona Time
Where are you located?

1225 West Houston Ave, Gilbert, AZ 85233
Do you offer virtual or in-person training?
Yes, please contact sales@rhs.com for a quote.
What products do you service?
We service the entire RH Systems line of products, you may find our products here.
Do you service products not manufactured by RH Systems?
Yes, please contact sales@rhs.com for more information.
Are you accredited?

As a NVLAP accredited laboratory, RH Systems is reassessed to ensure that our quality and practices maintain such standards (NVLAP Laboratory Code 600161-0). The National Institute of Standards and Technology (NIST) administers the National Voluntary Laboratory Accreditation Program (NVLAP), which accredits public and private laboratories based on evaluation of their technical qualifications and competence to carry out specific calibrations or tests. 


NVLAP provides an unbiased third-party evaluation and recognition of performance. Accreditation signifies that a laboratory has demonstrated compliance with NVLAP management and technical requirements, including quality systems, personnel, accommodation and environment, test and calibration methods, equipment, measurement tractability, sampling, handling of test and calibration items, and test and calibration reports. Learn more here.

Where can I find the range for each unit?
On our Product Page, click the specific unit. Then, click on download brochure.

Let’s Chat

Let's Chat
Joshua Stine
Chief Relationship Engineer

At RH Systems, we’re constantly pushing ourselves towards advancing our products and services for a wide range of clients, setting a new standard for accuracy and paving the way for future breakthroughs.

Customer satisfaction is the foundation of our reputation, so we never take a one-size-fits-all approach. We work with you to understand your needs and provide customized solutions that work seamlessly right from the jump.

Ready to chat with our Sales Team? Send an email to sales@rhs.com and we’ll get right back to you.

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