Business Details
30 Years
experience
Emergency
services
Your Trusted Partner for Commercial & Industrial HVAC Solutions
Dillett Mechanical Service has been a trusted provider of commercial and industrial HVAC solutions since 1996. Founded by Mike Dillett, our company combines over 30 years of industry expertise with a commitment to innovation and customer partnership. We specialize in delivering environmentally-friendly heating, ventilation, and mechanical control systems while empowering clients through customized preventive maintenance plans and hands-on technician training. Our union-trained team offers 24/7 emergency service with a two-hour response time, ensuring minimal downtime for mission-critical facilities.With a focus on energy efficiency and renewable energy solutions, we help businesses reduce operational costs while maintaining optimal indoor air quality. Our approach emphasizes transparency, accountability, and long-term partnerships, making us a preferred HVAC partner for Wisconsin businesses seeking reliable, family-owned service backed by technical excellence.
Services
HVAC Service
Chillers
Refrigeration
Energy Audits
Sheet Metal Fabrication
Controls Installation
Renewable Energies
Spray Booths
Piping Systems
Preventive Maintenance
Details
- Year established: 1996
Highlights and features
- We offer 24/7 emergency HVAC service with a two-hour response time
- Our union-trained technicians complete 5-year apprenticeship programs
- Customized preventive maintenance plans reduce long-term operational costs
- Specialized in mission-critical temperature control for industrial facilities
- Energy-efficient solutions help businesses achieve LEED certification standards
What people say
Timely and successful completion
Unmatched customer service
Smooth installation process
Competitive rates
Energy savings achieved
Services
HVAC Service
Our comprehensive HVAC services cover system design, installation, and maintenance for commercial and industrial facilities. We specialize in mission-critical temperature control solutions, offering 24/7 emergency repair services with rapid response times. Our union-certified technicians ensure optimal system performance through preventive maintenance plans tailored to each client's operational needs.
Chiller Installation
We provide expert installation and maintenance of large-tonnage water-cooled centrifugal and screw chillers. Our services include refrigerant recovery, vibration analysis, and compressor overhauls. Our Bitzer factory-trained technicians offer retrofit solutions that improve system efficiency and help clients achieve LEED certification standards for sustainable building operations.
Energy Audits
Our energy audit services identify cost-saving opportunities through system performance evaluations. We recommend renewable energy solutions like solar thermal panels and PV systems that reduce energy spend while improving environmental sustainability. Our assessments help businesses implement strategic energy management programs for long-term operational savings.
Sheet Metal Fabrication
We offer custom sheet metal fabrication and installation services for commercial HVAC systems. Our union-trained craftsmen create precision components that meet exact specifications, ensuring proper system function and energy efficiency. This service supports comprehensive mechanical system upgrades and preventive maintenance programs for industrial facilities.
Preventive Maintenance
Our customized preventive maintenance plans reduce equipment downtime and extend system lifespan. We train client staff to handle routine maintenance tasks while providing expert support for complex repairs. These programs include regular system evaluations and tailored service schedules to match each facility's unique operational requirements.
People
Mike Dillett
Founder
With over 30 years in commercial HVAC, Mike founded Dillett Mechanical in 1996 to help businesses reduce reliance on external contractors through hands-on training and partnership-based service models.
Paul Dillett
Technician
State apprenticeship award winner with extensive experience in HVAC system maintenance and installation, contributing to the company's technical excellence and training programs.
Tom Dillett
Service Technician
Certified HVAC technician specializing in emergency repairs and system evaluations, ensuring rapid response to client needs across Wisconsin's industrial sector.
Jim Dillett
Operations Manager
Manages day-to-day operations with focus on quality control and client satisfaction, leveraging industry experience to maintain high service standards.
Mary McGrath
Administrative Lead
Coordinates client communications and service scheduling, ensuring seamless project management and timely delivery of HVAC solutions for commercial clients.
Questions
Do you provide 24-hour emergency HVAC service?
Yes, we offer 24/7 emergency service with technicians available 365 days a year and a typical two-hour response time for urgent HVAC needs.
What makes your union shop different from non-union HVAC contractors?
Our union technicians complete rigorous five-year apprenticeships combining classroom learning and field training, ensuring higher technical proficiency and adherence to industry standards.
Can you create customized preventive maintenance plans?
Yes, we develop tailored maintenance programs for each facility, including staff training to reduce long-term service costs while maintaining optimal system performance.
Do you specialize in energy-efficient HVAC solutions?
Yes, we focus on energy efficiency upgrades and renewable energy integration that help businesses reduce operational costs and achieve sustainability goals.
What types of industrial chillers do you service?
We service large-tonnage water-cooled centrifugal and screw chillers, offering comprehensive maintenance, retrofits, and performance evaluations for industrial applications.
How do you handle emergency HVAC repairs after hours?
Our 24/7 service team responds to emergency calls within two hours, with technicians equipped to handle urgent repairs for mission-critical facilities.
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