M.N. Heating and Air

Precision Heating and Cooling for Optimal Comfort


Welcome to M.N Heating and Air, your trusted HVAC service provider proudly serving Demotte, IN and surrounding areas. For over 10 years, our team of licensed technicians have been delivering prompt, reliable heating and cooling installation, maintenance, and repair services to local homeowners and businesses.

Located at the Heart of Crown Point

M.N. Heating and Air

11820 Burr St.

Crown Point, Indiana 46307


Current Promotions

Take advantage of our seasonal promotions:

  • 10% Off Repairs – Save on any heating or cooling repair over $250
  • $200 Off AC Replacement – Upgrade to a new Armstrong Equipment
  • $100 Off Furnace Installs – Time for a new, efficient furnace?

Offers valid through June 2024 and can't be combined with other discounts. Call today to schedule!


Our Array of Expert Services

Furnace Service and Replacement

Our technicians can quickly diagnose any furnace issue and make necessary repairs. We also handle professional new furnace installations when replacements are required.

Air Conditioner Installation

We recommend installing a new, Armstrong Air, properly sized air conditioner if your current AC is outdated or unreliable. Investing in an energy efficient system saves on energy bills.

Indoor Air Quality Improvement

We offer advanced filtration, humidity control, ventilation improvements and more to maximize air quality.

Heat Pumps

We are experienced heat pump installers and can also service existing units. Heat pumps provide both heating and air conditioning.


Our technicians are fully trained and licensed to repair, maintain, and install boilers of all makes and models.

Ductless Mini-Splits

We are certified installers of ductless mini-split systems that allow zone heating and cooling for additions, garages, attics and more.

Water Heater Services

In addition to HVAC, we also repair and install tank, tankless and hybrid water heating systems. We handle smart thermostat installations for advanced temperature control and energy savings.

Maintenance Plans

Our maintenance agreements include annual tune-ups to keep your HVAC and plumbing systems running at peak performance.

Commercial HVAC

We understand the needs of commercial HVAC systems. Services include:

  • Rooftop units, chillers, boilers, air handlers
  • Multi-zone climate control
  • New equipment installation
  • Preventative maintenance plans
  • 24-hour emergency service

Whether you operate retail, restaurants, offices, warehouses or more, we can expertly service your commercial HVAC needs. We handle all makes and models. Call anytime for emergency repairs, routine maintenance, or new equipment installations. You can rely on our seasoned team of HVAC pros to get your system running its best!


M.N. Heating and Air is locally owned and operated . As lifelong Northwest Indiana residents, we take pride in being part of the community. Our seasoned technicians are familiar with the local climate and understand how to maximize home comfort and efficiency. Contact us to experience quality service from technicians who treat you like family!

24/7 Emergency Heating and Furnace Repairs

We offer around-the-clock emergency services for heating or cooling failures. Our after-hours team is always available for issues like:

  • Furnace failures on freezing nights
  • Total loss of air conditioning on hot summer days
  • Frozen or burst pipes
  • Dangerous levels of carbon monoxide
  • Strange electrical smells
  • And ANY other HVAC emergency!

Never hesitate to call our emergency hotline for immediate assistance anytime day or night.

Trusted Brands We Work With

While we specialize in Armstrong equipment, we service top brands including:

  • Trane
  • Carrier
  • Lennox
  • Goodman
  • Amana
  • American Standard
  • Aprilaire
  • Honeywell
  • Emerson

Our technicians complete regular factory training to stay current on these brands. Let us know if you need repairs, maintenance or installation!

Why You Should Service Your AC Unit Each Season

Proper seasonal maintenance provides many benefits:

  • Maximizes efficiency to save on energy costs
  • Prevents costly emergency repairs
  • Catches minor issues before they become major
  • Keeps your home reliably comfortable
  • Extends the lifespan of your equipment
  • Ensures safe operation of electrical systems

Routine AC tune-ups and furnace inspections are a small investment that pay big dividends. Contact us today to schedule annual maintenance.

Benefits of Installing a New Furnace

Upgrading an aging furnace provides:

Latest Technology

  • Enhanced comfort, efficiency and reliability

More Efficient

  • Lower utility bills

Less Noise

  • Quieter operation

Better Temperature Control

  • Consistent, even heat with smart thermostats

Improved Air Quality

  • Integrated air filtration for cleaner air

Talk to our team about the best replacement option for your needs and budget. We provide free estimates.

Why Choose Us?

You have many options for HVAC services. Here’s what makes us the top choice in Demotte:

Timely Service

Our large team and flexible scheduling allows us to respond promptly when you need us.

Experienced Technicians

Our seasoned technicians complete ongoing training to provide expert service.

Quality Workmanship

We take pride in doing the job right the first time to the highest standards.

Troubleshooting Specialists

No matter how complex the issue, we have the expertise to diagnose and solve it.

100% Customer Satisfaction

Read our rave reviews - we aim to exceed your expectations on every job.

For heating and cooling service you can count on, choose the team that puts you first. Contact us today!

HVAC Licenses and Certifications

Our knowledgeable technicians hold factory certifications and all required licenses:

  • Indiana HVAC License
  • EPA 608 Refrigerant Certification
  • Factory Certification
  • Regular manufacturer equipment training

We invest in ongoing technician training so you can trust our expertise.


See what satisfied customers in Demotte and across the region are saying:

"Found and fixed a furnace issue three other companies missed."

"New AC installation went perfectly. Fast, friendly, clean."

"Caught a clogged drain line before serious water damage occurred."

"Fair pricing and quality service - highly recommend!"

"Kept our business location comfortable through a heat wave."

Service Areas

In addition to DeMotte, we proudly serve:

  • Hebron
  • Lowell
  • Crown Point
  • Winfield
  • Lake Village
  • And more!

Contact M.N Heating & Cooling today to experience quality HVAC service across Northwest Indiana.

About DeMotte, IN

Whispers of History:

DeMotte's past whispers through its historic buildings, many of which still stand proudly along tree-lined streets. The Jasper-Newton County Courthouse, a magnificent Beaux-Arts structure dating back to 1909, is a testament to the town's architectural heritage.

Nature's Embrace:

Nature lovers will find themselves spoiled for choice in DeMotte. The Kankakee Marsh, with its diverse plant and animal life, provides ample opportunities for birdwatching, hiking, and fishing.

Park Centre, another local gem, features a serene lake, picnic areas, and a playground, perfect for family outings. And for those seeking a dose of adrenaline, the nearby Raceway Park offers go-karting and other motorsports fun.

A Vibrant Tapestry of Community:

DeMotte's strong sense of community is evident in its numerous annual events, such as the Kankakee Valley Festival and the DeMotte Fall Festival. These celebrations bring residents together to enjoy live music, local food, and friendly competition.

The town also boasts a vibrant arts scene, with galleries showcasing the work of local artists and studios offering classes for aspiring creators. And for those seeking entertainment, the historic Tivoli Theatre screens classic movies and hosts live performances.

A Convenient and Enchanting Base:

Despite its rural charm, DeMotte offers easy access to the excitement of larger cities. Chicago, with its world-renowned museums, vibrant nightlife, and iconic landmarks, is just a two-hour drive away. Indianapolis, the Hoosier State's capital, is also within reach, offering historical treasures and cultural delights.

Whether you're seeking a peaceful escape from the city's hustle and bustle, a taste of American history, or a vibrant community to call home, DeMotte, Indiana, offers something for everyone. So, come discover the magic of this rural gem for yourself!

Frequently Asked Questions

We provide a comprehensive range of services including air conditioning repair, heating services, and AC repair in Demotte. We serve both residential and commercial customers. Our expert heating and cooling service is dedicated to maintaining the comfort of your home and office.

Our HVAC company has been providing top-quality service in Demotte and the surrounding areas for over 10 years. Our skilled HVAC technicians bring a wealth of experience to every job.

Yes, aside from our primary service in DeMotte, we also extend our heating and air conditioning service to various areas in Jasper County, Porter County, Crown Point, and the surrounding regions. If you're unsure whether we cover your location, please give us a call.

Our commitment to delivering all-star service makes us stand out. We're also a proud local business with 10 years of experience, serving DeMotte and the surrounding areas in Indiana with expert heating, air conditioning, and AC repair services.

Our booking process is simple – just give us a call today to schedule your AC repair in DeMotte, or a heating or air conditioning service in the surrounding areas. We look forward to serving you!

Absolutely. Our team of expert heating and AC repair technicians are experienced with a wide range of makes and models of heating and air conditioning systems. No matter your system, we’re here to help.

Aside from heating and air conditioning repair, installation, and maintenance, we also offer plumbing services and can assist with air cleaners and humidifiers, keeping the air in your home clean and comfortable.

Yes, we do. Our services aren't just for homeowners - we serve commercial clients too. Whatever the size or complexity of your project, we have the skills, the tools, and the team to get the job done right.

If your heating isn't producing warm air, it probably needs a repair or servicing. Our heating services are comprehensive and efficient — just give us a call today at 219-488-3845, and we'll ensure your home doesn't stay cold in the winter.

Yes, our HVAC service company is fully licensed and insured. We believe in maintaining the highest professional standards for the peace of mind and safety of our customers.

Call us Today

Don't leave your family's comfort to chance. 

Contact the HVAC professionals at M.N. Heating and Air today!