Your Comfort, Our Expertise.

Jacksonville's Trusted Heating & Cooling Experts

Book your next service appointment with a trusted local expert

Experience the Nelke Difference

Reliable Service, Unmatched Quality.

  • Family-Owned and Operated: We provide personalized, friendly service you can trust. 🛡️
  • Over a Decade of Expertise: Our licensed technicians have extensive experience and training. ✅
  • Upfront, Transparent Pricing: We offer clear, fair pricing with no hidden fees. 💰
  • Timely and Responsive Service: Count on us for prompt repairs and quick responses. ⏱️

Comprehensive HVAC Solutions

Keeping Your Home Comfortable All Year Round

Precision Heating Services

Professional heating solutions for lasting comfort.


  • Furnace Installation & Replacement
  • Furnace Repair & Maintenance
  • Boiler Systems
  • Heat Pump Services

Expert Cooling Services

Reliable air conditioning to beat the heat.


  • AC Installation & Replacement
  • AC Repair & Maintenance
  • Ductless Mini-Split Systems
  • Central Air Conditioning

Indoor Air Quality

Breathe cleaner, healthier air in your home.


  • Air Filtration & Purification Systems
  • Whole-House Humidifiers
  • Air Duct Cleaning
  • Germicidal Lights


Commercial HVAC

Custom climate control for your business.



  • Commercial HVAC Installation & Service
  • Preventative Maintenance Programs
  • Refrigeration Systems
  • DDC Controls


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Our Customers Speak for Us

Our commitment to excellence is reflected in the positive feedback from our valued customers. We take pride in building long-term relationships and ensuring every client is completely satisfied with our work. Read what your neighbors are saying about their experience with Nelke Mechanical.

Proudly Serving Jacksonville & Surrounding Areas

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  • Jacksonville
  • Atlantic Beach
  • Jacksonville Beach
  • Neptune Beach
  • Lakeside
  • Orange Park
  • Bellair-Meadowbrook Terrace
  • Fruit Cove
  • Fleming Island
  • Asbury Lake
  • Doctors Inlet
  • Sawgrass
  • Ponte Vedra Beach
  • Nocatee
  • World Golf Village

The Jacksonville Mechanical Story

Decades of Dedication

At Jacksonville Mechanical, we believe that true comfort comes from more than just a functioning HVAC system—it comes from trust and reliable service. As a small, family-owned business, we have been serving the Jacksonville area for over a decade with a commitment to integrity, hard work, and prioritizing our customers' needs. We are dedicated to providing superior expertise and transparent communication, ensuring every client feels respected and confident in their investment. Our mission is to simplify comfort and deliver peace of mind, one home at a time.

See our work

Customer Satisfaction in Every Job

At Triple I LLC, we take pride in the results we deliver. From revitalizing hardwood floors to cleaning carpets, tile, and upholstery, our work speaks for itself.