Business Details
24 Years
experience
Emergency
services
Your Trusted HVAC Partner in Northwest Indiana
At KNZ Heating & Cooling, we understand that a malfunctioning HVAC system can significantly impact your safety and comfort. With over two decades of experience in the heating and cooling industry, our family-owned company in Northwest Indiana is committed to providing reliable repair and installation services. We pride ourselves on offering energy-efficient products at honest and fair prices, backed by a comprehensive 100% Satisfaction Guarantee. Our team takes a Whole-House Systems approach to maximize energy efficiency, ensuring your home or business remains comfortable year-round. We serve both residential and commercial clients, specializing in HVAC maintenance, furnace and boiler installation, water heater services, and indoor air quality solutions.Our technicians are licensed, insured, and trained to handle all major brands, with a focus on minimizing unnecessary expenses through warranty checks. With 24/7 emergency services and a reputation built on trust and personalized care, we treat every client as part of our extended family. Our commitment to excellence extends to offering the most energy-efficient products at an honest and fair price, ensuring your comfort and satisfaction are our top priorities.
Services
HVAC Installation
Furnace Repair
Boiler Maintenance
Water Heater Services
Indoor Air Quality
Details
- Year established: 2002
Highlights and features
- Family-owned with 20+ years of local expertise
- 24/7 emergency HVAC services available
- 100% satisfaction guarantee on all work
- Whole-house energy efficiency assessments
- Servicing all major HVAC brands under warranty
What people say
Fair pricing
24/7 availability
Professional staff
Energy savings
Same-day service
Services
HVAC Installation
KNZ Heating & Cooling specializes in installing energy-efficient HVAC systems tailored to residential and commercial needs. Our technicians handle central cooling, heat pumps, geothermal units, and hybrid systems, ensuring optimal comfort and reduced utility costs. With over two decades of experience, we provide quick, clean installations backed by manufacturer warranties and personalized consultations.
Furnace Repair
We offer comprehensive furnace repair and maintenance for gas, oil, and electric systems. Our licensed technicians diagnose issues like faulty pilot lights, thermostat malfunctions, and gas supply problems, providing same-day solutions. With expertise in 96% efficiency models and Trane equipment, we ensure reliable heating during extreme weather in Northwest Indiana.
Water Heater Services
From tankless to traditional storage units, we install and repair high-efficiency water heaters. Our team addresses leaks, sediment buildup, and thermostat issues while offering maintenance plans to extend system lifespan. We prioritize energy-saving solutions that align with household or business demand, ensuring consistent hot water supply and cost efficiency.
Boiler Maintenance
KNZ provides boiler installation, repair, and servicing for radiant heating systems. We handle tankless boilers, steam systems, and hydronic setups, focusing on safety and efficiency. Our technicians address pressure valve issues, corrosion, and freezing risks, ensuring quiet operation and improved air quality for homes and businesses in cold climates.
Indoor Air Quality
We enhance indoor air quality with whole-house humidifiers, UV light purification, and advanced air filtration systems. Our solutions reduce allergens, control humidity, and neutralize pathogens, meeting American Lung Association standards. Systems integrate with existing HVAC setups to create healthier living and working environments.
People
Keith Miller
Owner
Keith has led KNZ Heating & Cooling since its founding in 2002, leveraging decades of HVAC expertise. He oversees installations and ensures every project meets rigorous quality standards while maintaining personal client relationships.
Nick
Lead Technician
Nick manages repair and maintenance operations with 15+ years of field experience. Known for punctuality and technical proficiency, he specializes in complex system diagnostics and customer education about HVAC efficiency.
Zack
Service Technician
Zack provides emergency HVAC services and routine maintenance. Clients praise his professionalism and attention to detail, particularly in resolving urgent heating and cooling failures during extreme weather.
Questions
What HVAC services does KNZ Heating & Cooling offer?
We provide installation, repair, and maintenance for heating, cooling, boilers, water heaters, and indoor air quality systems in Northwest Indiana.
Do you offer emergency HVAC services?
Yes, we provide 24/7 emergency services for urgent heating and cooling system failures.
Are your technicians certified?
All our technicians are licensed, insured, and trained to service major HVAC brands.
What areas do you serve?
We primarily serve Northwest Indiana, including Lake and Jasper Counties.
Do you guarantee your work?
We offer a 100% Satisfaction Guarantee on all installations and repairs for one year.
Can you service older HVAC systems?
Yes, we repair and maintain systems regardless of age or original installer.
