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38 Years
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Trusted HVAC Services in Lodi, WI
Hillestad Heating & Cooling Systems has been a trusted provider of HVAC solutions in Wisconsin since 1988. Founded as a small family-owned business, we have grown into a respected leader in heating, ventilation, and air conditioning services while maintaining our commitment to personalized care. Our certified professionals specialize in residential and commercial HVAC systems, including furnace repair, boiler services, air conditioning installation, and indoor air quality solutions. With decades of combined experience, we prioritize energy efficiency, transparent pricing, and prompt service to ensure customer satisfaction. As an authorized dealer for Bryant and Rheem products, we combine quality equipment with expert craftsmanship to deliver reliable comfort solutions. Our team serves Lodi, Baraboo, Madison, and surrounding areas, offering 24/7 emergency service and free in-home estimates.

We take pride in our local roots, having expanded from a garage startup to a full-service HVAC company with a dedicated facility in Lodi's industrial park. Our philosophy centers on honesty, technical expertise, and long-term customer relationships, ensuring every project meets the highest standards of quality and reliability. Through consistent growth and unwavering dedication to our community, we continue to provide innovative HVAC solutions tailored to Wisconsin's climate challenges. This enduring commitment to excellence has earned us a 5.0-star rating from satisfied customers who praise our professionalism, technical skill, and responsive service.
Services
Furnace Repair Boiler Installation AC Maintenance Ductless Systems Commercial HVAC
Details
  • Year established: 1988
Highlights and features
  • Certified HVAC professionals with 35+ years of local experience
  • 24/7 emergency service with same-day appointments available
  • Factory-authorized dealers for Bryant and Rheem products
  • Comprehensive service for all makes and models
  • Energy-efficient solutions with transparent pricing
What people say
Professional staff Quick response times Expert repairs Affordable pricing Energy-efficient solutions
Services
Furnace Repair
Our certified technicians provide fast diagnostics and repairs for all furnace types. We address ignition issues, thermostat problems, and system inefficiencies to restore heat quickly. With same-day service available, we use factory-authorized parts to ensure lasting repairs while maintaining energy efficiency standards.
Boiler Installation
We install modern, energy-efficient boiler systems for residential and commercial properties. Our experts handle complete replacements of older units, ensuring proper sizing and configuration for optimal performance. We work with all major brands while maintaining compliance with local building codes and safety standards.
AC Maintenance
Seasonal tune-ups improve system efficiency and prevent breakdowns. Our maintenance includes coil cleaning, refrigerant checks, and electrical component inspections. Regular service extends equipment lifespan while maintaining manufacturer warranty requirements for residential and commercial air conditioning systems.
Ductless Systems
We design and install ductless mini-split systems for homes without existing ductwork. These zoned solutions provide efficient cooling and heating with minimal structural impact. Our team handles both residential and commercial installations, ensuring proper sizing and optimal placement for maximum comfort.
Commercial HVAC
Our commercial services cover system design, installation, and maintenance for businesses. We service rooftop units, chillers, and specialized equipment for restaurants, retail spaces, and industrial facilities. With 24/7 emergency support, we minimize downtime while maintaining energy efficiency and code compliance for commercial properties.
Questions
What HVAC services do you offer in Lodi?
We provide furnace repair, boiler installation, air conditioning maintenance, ductless systems, and commercial HVAC services. Our technicians handle all makes and models with 24/7 emergency support.
Are you available for emergency HVAC repairs?
Yes, we offer 24-hour emergency service with same-day appointments available. Our technicians respond promptly to heating and cooling emergencies in Lodi and surrounding areas.
Do you service all HVAC brands?
Our certified technicians service all major HVAC brands and models. We're factory-authorized dealers for Bryant and Rheem products while maintaining expertise across various equipment types.
What financing options are available?
We offer financing solutions for HVAC replacements and major repairs. Contact our office for details about payment plans and special financing offers for qualifying customers.
Which areas do you serve?
We serve Lodi, Baraboo, Madison, Portage, Sauk City, Wisconsin Dells, and surrounding communities in south-central Wisconsin with both residential and commercial HVAC services.
How can I schedule service?
Schedule online through our website or call us directly at (608) 231-3888. For non-emergency requests, you can also contact us through our online form during regular business hours.
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