M.N. Heating and Air

Heating and Air Conditioning Company Dyer IN


Welcome to M.N. Heating and Air, your trusted HVAC service provider proudly serving Dyer, IN and surrounding areas. For 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.

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!

Located at the Heart of Crown Point

M.N. Heating and Air

11820 Burr St.

Crown Point, Indiana 46307



Our HVAC Services

Indoor Air Quality Improvement

Poor indoor air quality from dust, pollen, pet dander, mold, and air pollutants can impact your family's health and comfort. We offer complete indoor air quality solutions including:

  • Air duct deep cleaning to remove built-up allergens
  • Air purification systems including HEPA filters to trap particles
  • Dehumidifiers and humidifiers to control moisture and humidity
  • Ventilation improvements to maximize fresh air flow
  • And more!

Breathe easier with our air quality expertise. We can customize a plan to enhance the air in your Dyer home or business.

Heat Pumps Installation and Servicing

Heat pumps provide efficient heating and cooling from a single dual-purpose system. If your current heat pump fails or requires frequent repairs, we recommend a new replacement unit properly sized for your home or business. We are certified installers of today's most advanced heat pumps from Carrier, Trane, Goodman, Amana and more. Take advantage of enhanced performance, energy savings, and features like zoned climate control. Trust our experts to properly install your new heat pump system. We also service and maintain existing heat pumps to keep them operating at peak efficiency.

Boiler Repair and Installation

Boilers provide hydronic heating using hot water or steam circulated through radiators or in-floor systems. Our technicians are fully trained and licensed to repair, maintain, and install boilers from every major brand. We can quickly get faulty boilers up and running while maximizing efficiency to reduce fuel costs. If your boiler requires replacement, we provide new efficient models with all installation services included. Enjoy reliable, even heat throughout the coldest Dyer winters.

Ductless Mini-Splits

Ductless mini-split systems provide targeted heating and cooling without ductwork for additions, garages, renovated attics, remote rooms and more. As certified mini-split installers, we offer a full selection of ductless options from brands like Senville, Pioneer, Daikin and more. Ductless systems come in single or multi-zone configurations for precise climate control. Take advantage of flexible, affordable zone heating and cooling!

Garage Heater Installation

Make working in your garage comfortable year-round with a new commercial-grade overhead infrared garage heater. We handle professional installation and all electrical work. New garage heaters make DIY projects possible no matter the temperature outside.

Water Heater Installation and Repair

In addition to HVAC, we also offer complete water heater services. We repair and install tank, tankless and hybrid models plus handle all plumbing connections. Trust us for leak detection and water heater replacements. Enjoy endless hot water!

Thermostat Installation

Ensure optimal control over your home's temperatures with a new thermostat installation. We provide smart WiFi thermostats with remote access, zoned climate control, scheduling, and advanced features to maximize efficiency. Achieve greater comfort with customized temperature control.

Maintenance Plans

Proper maintenance ensures your HVAC and plumbing systems continue operating at peak performance year after year. We offer maintenance agreements for:

  • Annual furnace and AC tune-ups and inspections
  • Semi-annual heat pump maintenance
  • Annual boiler tune-ups
  • Drain cleaning and preventative maintenance
  • And more!

Routine maintenance prevents unwelcome breakdowns and expensive emergency repairs. Our plans provide peace of mind while maximizing efficiency.


In addition to residential customers, we also serve small businesses across Dyer with their unique HVAC needs including:

  • Large capacity rooftop units, boilers, furnaces, and related commercial equipment
  • Multi-zone climate control and building automation systems
  • Maintenance, repair, and new installations
  • After-hours emergency services to minimize disruptions
  • And all other heating, cooling, and ventilation needs

We have the experience, training, and equipment to expertly service commercial HVAC systems. Rely on us to keep your business location comfortable, operational, and energy efficient no matter the season!

24/7 Emergency Heating and Furnace Repairs

We understand heating and cooling problems can happen anytime. That's why we offer 24/7 emergency after-hours service across Dyer and all surrounding communities. Whether it's a broken furnace on a freezing winter night or failed air conditioner on a sweltering summer afternoon, our experienced techs are ready for prompt response and repairs. As longtime locals, we take your comfort and safety seriously. Never hesitate to call our emergency hotline for urgent issues like:

  • Total furnace or AC failure
  • Frozen or burst pipes
  • Dangerous CO levels
  • Strange electrical smells
  • And any other heating or cooling emergency!

Have confidence knowing a qualified professional is always on call to quickly diagnose issues and make repairs anytime day or night.

HVAC Licenses and Certifications

All of our HVAC technicians hold current licenses and top industry certifications including:

  • Indiana HVAC Contractor License - Legally required for contractors in the state
  • EPA 608 Certification - Required for handling refrigerants
  • Factory Certified Technicians - Proves technician expertise across brands and systems
  • Manufacturer-specific training - For Armstrong with knowledge to work on any HVAC Brand equipment.

You can have confidence in our team’s qualifications to properly and safely repair and install all makes and models of heating and cooling equipment. Contact us to learn more about our training, certifications, and commitment to professionalism.

We Service All Brands

As an Armstrong Air Pro Team Dealer we recommend and install Armstrong Pro Products, but we have the expertise to properly service any brand. We keep trucks stocked with parts for most common systems. Brands we repair include:

  • Carrier
  • Trane
  • Lennox
  • Rheem
  • York
  • Bryant
  • Amana
  • Goodman
  • American Standard
  • Aprilaire
  • Honeywell
  • And more!

Never hesitate to call - our experienced technicians can expertly diagnose and service all equipment makes and models.


We rely on referrals and repeat business. Read reviews from happy clients across Dyer and beyond:

"Prompt, fairly priced, professional. My go-to HVAC company."

"Saved me money with furnace repairs over replacement."

"New AC cools my home perfectly. Great job!"

"Caught a dangerous gas leak during seasonal tune-up - so grateful."

"Polite, clean cut technicians who take time to explain every step."

Service Areas

In addition to Dyer, we proudly serve Northwest Indiana towns and cities including:

  • Schererville
  • St. John
  • Crown Point
  • Highland
  • Griffith
  • Munster
  • Merrillville
  • And more!

Contact M.N. Heating and Air today to experience quality service from the heating and cooling leader in the region. Call anytime!

About Dyer, IN

Dyer, Indiana, pulsates with a unique energy, effortlessly blending the vibrant pulse of metropolitan Chicago with the laid-back charm of Midwestern rural life. This town of around 16,000 residents, nestled about 30 miles southeast of the Windy City, offers a haven for those seeking urban amenities alongside small-town warmth.

A Town Steeped in History

Dyer's past paints a vibrant tapestry, evident in its historic landmarks like the Old Town Hall, a quaint brick building dating back to the early 1900s. The Dyer Historical Society Museum preserves fascinating relics and stories, whispering tales of the town's early days as a farming community.

Family-Friendly Festivities

Dyer buzzes with a vibrant community spirit, evident in its numerous annual events. The Dyer Summer Fest brings residents together for music, food, and fun under the sun.

Urban Delights at Your Doorstep

Despite its rural charm, Dyer offers convenient access to the urban delights of Chicago. A quick train ride whisks you away to the city's renowned museums, Michelin-starred restaurants, and world-class sporting events.

Frequently Asked Questions

We offer a comprehensive range of air conditioning services in Dyer, including AC repair and installation, maintenance, ductless system installation, and air conditioning repair. Whether your cooling system needs a simple tweak or a complete overhaul, you can give us a call and we're ready to help.

Yes, beyond air conditioning service, our cooling services also include installation and service of ductless systems, and air filtration services to improve the air in your home. We’re just a call away to bring comfort back to your home in Dyer, Indiana.

Yes, we provide heating and air conditioning services across Northwest Indiana, including Dyer, Cedar Lake, Crown Point, and Schererville. Whether you need heating repair in Cedar Lake or AC installation in Crown Point, you can count on us.

Our HVAC repair service is always available. You can call us any time on our provided number (219)488-3845 and we will be there to restore your home’s heating and air conditioning system functionality promptly and professionally.

To reach us at our Dyer HVAC location simply 'contact us' by either giving us a call at (219)488-3845 number or through our website's contact page. We look forward to addressing your heating and air conditioning needs.

Our dedication to your home's health and comfort sets us apart. We provide air conditioning services in Dyer that focus not just on temperature control, but also on improving the air quality in your home. Our heating and cooling services go hand in hand with air filtration services to ensure a complete home comfort solution.

Absolutely. We offer comprehensive commercial heating and cooling services. From heating repair to AC installation and everything in between, we are ready to help keep your business comfortable year-round. Give us a call today to learn how we can serve your commercial heating and cooling needs.

Yes, amongst other services, we are also installation experts for AC installation and tankless water heaters in Dyer and the surrounding areas. These devices are an energy-efficient alternative to traditional water heating and cooling system, providing increased comfort and savings. To find out more about this service, don't hesitate to call us.

Absolutely, we are a fully licensed and insured heating and air conditioning service company in Dyer and across Northwest Indiana. When you choose us for HVAC repair, AC installation or other services in Dyer, you can trust you're working with professionals.

Having your heating or air conditioning service handled by our Dyer HVAC company guarantees quality service and peace of mind. We have served the Dyer, Crown Point, and the surrounding Northwest Indiana areas with top-notch heating, cooling, and air conditioning service for years and we’re ready to help keep your home comfortable year-round.

Call us Today

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

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