Business Details
50 Years
experience
Emergency
services
Trusted HVAC Solutions and Mechanical Contracting Services
Since 1976, Johnson Melloh has established itself as a leader in mechanical contracting and energy-conscious solutions. Our expertise spans design-build projects, preventative maintenance, and innovative energy efficiency services for industrial, healthcare, educational, and municipal facilities. With over 40 years of experience, we combine technical proficiency with integrity to deliver tailored solutions that bridge design, engineering, and sustainable practices. Our team holds certifications from industry leaders like Carrier, Daikin, and Rinnai, ensuring top-tier performance and reliability.We prioritize long-term customer relationships, community impact, and employee well-being, operating with a philosophy that values trust and ethical decision-making. Our 24/7 on-call service guarantees prompt, certified support for critical mechanical needs, while our commitment to evolving with technological advancements positions us as a forward-thinking partner for facility optimization.
Services
Mechanical Contracting
Energy Efficiency
LED Lighting
Photovoltaic Solar
Customer Consulting
Details
- Year established: 1976
Highlights and features
- 40+ years of specialized mechanical contracting experience
- Factory-certified technicians for major HVAC brands
- 24/7 on-call emergency service with rapid response
- Energy-efficient retrofit and new construction expertise
- Community-focused business philosophy with transparent communication
Associations and certifications
- Carrier Control Experts
- AERCO Boiler Factory Technicians
- Rinnai Commercial Service Provider
- Daikin VRV PRO Dealer
- Marley Cooling Tower Factory Technicians
Services
Mechanical Contracting
Full-service mechanical contracting including design-build projects and retrofit installations. Our self-performed work covers HVAC, plumbing, and process piping for industrial and commercial facilities. With Carrier, Daikin, and Rinnai certifications, we ensure precision installations that meet evolving energy standards while maintaining operational continuity for critical environments.
Energy Efficiency
Comprehensive energy optimization services featuring LED lighting retrofits, Honeywell controls integration, and photovoltaic solar systems. We specialize in reducing operational costs through ASHRAE-compliant audits and implementing DOE-recommended conservation measures tailored to healthcare, education, and manufacturing sectors.
Facility Product Solutions
End-to-end facility equipment solutions including cooling towers, chillers, and radiant heating systems. Our factory-trained technicians provide installation, preventive maintenance, and emergency repair services for Marley cooling towers, Rapid makeup air units, and ultra-low-temp medical equipment with 24/7 service availability.
Photovoltaic Solar
Custom solar energy system design and installation services for commercial properties. We offer SunBandit hybrid solar water heating and ductless VRV solar-integrated solutions that reduce energy consumption by up to 60% while meeting local utility rebate requirements and federal tax credit eligibility.
Customer Consulting
Strategic facility planning and energy consulting services for optimizing building performance. Our team provides lifecycle cost analysis, LEED certification guidance, and ROI projections for mechanical systems upgrades, combining engineering expertise with hands-on implementation capabilities.
People
Nick Melloh
CEO
Nick Melloh leads Johnson Melloh with a focus on innovative energy solutions and customer trust. With over 40 years in mechanical contracting, he emphasizes ethical business practices, community impact, and technical excellence while maintaining the company's founding principles of integrity and reliability.
Questions
What HVAC services does Johnson-Melloh offer?
We provide full mechanical contracting, preventive maintenance, emergency repairs, and energy efficiency upgrades for commercial and industrial facilities.
Are your technicians certified for major HVAC brands?
Yes, we're factory-certified for Carrier, Daikin, Rinnai, AERCO, and Marley equipment with specialized training for medical-grade ultra-low-temp systems.
Do you offer 24/7 emergency HVAC service?
Our 24/7 on-call service ensures rapid response for critical mechanical issues with certified technicians available at all times.
What energy-saving solutions do you specialize in?
We implement LED lighting retrofits, photovoltaic solar systems, Honeywell controls, and water conservation measures to reduce energy costs by up to 60%.
Which geographic areas do you serve?
Primarily serving the Midwest, we handle projects from Indiana to surrounding states for both new construction and facility retrofits.
Can you assist with facility energy audits?
Yes, our consulting services include ASHRAE-compliant energy audits and customized efficiency improvement plans for commercial buildings.
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