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10 Best HVAC Companies in Duluth, MN

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Written By Bradford Cuthrell

Last Updated April 2024

If you're like the average American, more than half of your energy bill (55%, per the Department of Energy) goes toward heating and cooling your home. You don't want to spend more than you need to on temperature control in your Duluth home, so it's critical that all systems are functioning properly.

We've assembled this guide to Duluth's top HVAC companies to help you find the right person for your job and get your system into its best shape ever.

Top 10 Best HVAC Companies in Duluth

MMT Heating & Cooling

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5501 Miller Trunk Hwy, Duluth, MN 55811 (218) 729-1585 mmtheating.com

Reliable customer support

Clear pricing policy

Informative resources

Services Offered

Indoor air quality
Ventilation
Maintenance
Furnace installation
Boiler installation
Ductless
Filtration
Emergency services

Krause Heating & Cooling

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2020 W 1st St, Duluth, MN 55806 (218) 722-6354 krauseheating.com

Reliable customer support

Clear pricing policy

Prompt service delivery

Free quote

Services Offered

Furnace installation
Ac installation
Ac repair
Emergency services

Twin Ports Custom Climate (TPCC)

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1328 Oakes Ave, Superior, WI 54880 (715) 203-4627 twinportscustomclimate.com

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Clear pricing policy

Prompt service delivery

Reliable customer support

Services Offered

Indoor air quality
Filtration
Emergency services
Ac installation
Furnace installation

D G Solem & Sons

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5102 1/2, 5102 Dodge St, Duluth, MN 55804 (218) 525-3123 dgsolem.com

Clear pricing policy

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Reliable customer support

Services Offered

Furnace installation
Maintenance
Ventilation
Radiant heating
Boiler installation
Ac installation
Indoor air quality

Northland Comfort Heating & Cooling

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5722 Miller Trunk Hwy, Duluth, MN 55811 (218) 729-6505 northlandcomfort.com

Clear pricing policy

Reliable customer support

Services Offered

Maintenance
Furnace installation
Ventilation
Boiler installation
Ac installation

A G O'Brien Plumbing & Heating Co

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4907 Lightning Dr, Duluth, MN 55811 (218) 729-9662 agobrien.com

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Reliable customer support

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Services Offered

Furnace installation
Maintenance

Stack Brothers Mechanical

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2801 Hill Ave, Superior, WI 54880 (715) 398-2964 stackbr.com

Clear pricing policy

Prompt service delivery

Reliable customer support

Services Offered

Emergency services
Boiler installation
Inspection
Maintenance

Veterans Heating & Cooling

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4085 Jeffrey Rd, Duluth, MN 55810 (218) 461-1911 veteransheating.com

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Clear pricing policy

Reliable customer support

Services Offered

Emergency services
Maintenance
Furnace installation

Central Sheet Metal Works Inc.

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1225 Ogden Ave, Superior, WI 54880 (715) 394-6593 csmsuperior.com

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TruTemp Heating and Cooling LLC

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9 Hillside Rd, Esko, MN 55733 (218) 451-4677 trutempheatingandcooling.com

Free quote

Reliable customer support

Informative resources

Clear pricing policy

Services Offered

Maintenance
Indoor air quality
Emergency services
Radiant heating
Boiler installation
Furnace installation
Ac installation
Today's Homeowner Ranking Methodology

Today's Homeowner looks at dozens of datapoints on hvac companies to come up with our data-driven rankings. It's not possible for a company to pay for preferential treatment in our rankings. We look at the following key factors in determining who should top our list:

  • Company Experience
  • Real User Reviews
  • Company Reputation
  • Accreditations and Licenses
  • Service Area
  • Customer Service
Have questions about our methodology or company ratings? Reach out to FindAPro@TodaysHomeowner.com.

Signs You May Need HVAC Repair or Replacement

A malfunctioning or aging HVAC system probably needs attention from a professional who can make repairs or install a new unit. Keep an eye out for these common indicators that your HVAC needs service:

  • Rust, cracking, or corrosion
  • Frequent breakdowns and need for repairs
  • Refrigerant leaks
  • Uneven heating/cooling or poor air circulation
  • Temperature control issues or thermostat malfunctions
  • Higher than normal energy bills
  • Odd noises when the system turns on
  • An HVAC system that's over 15 years old

If you notice any of the above, have a local HVAC technician inspect your system. They can diagnose problems and recommend whether repair or full HVAC replacement is the better solution.

Cost of HVAC Installation and Maintenance in Duluth

HVAC installation or maintenance prices vary depending on your system. Common HVAC unit types include the following:

  • Split or mini-split: If your home's ductwork isn’t suited for a central HVAC system, you probably have a split or mini-split system. Split systems have internal units in each room to regulate temperature. These indoor units all connect to an outdoor unit.
  • Hybrid split: A hybrid split HVAC system functions very similarly to a standard split system. It has the benefit of having the capability to use either gas or electricity for power.
  • Heat pump: Heat pumps exchange warm and cold air between your home and the outdoors. They don't make their own heat or AC, so they function best in moderate climates and may not be as effective during Duluth's cold winters.
  • Packaged heating and air: Packaged HVAC systems work well in smaller houses. They consist of a single combined air conditioner and heating unit, usually located in an attic or basement. This unit is typically space-saving, cost-effective, and easy to maintain.

HVAC maintenance prices differ based on the specific services required. HVAC systems can be complex and potentially require several different services. Price ranges for typical jobs are as follows:

HVAC Unit TypeCost
Split$1,839-$4,688
Hybrid Split$3,726-$6,864
Heat Pump$2,885-$29,397
Packaged Heating and Air$241-$402

Ways to Save Money on HVAC Costs

It’s important to make any essential HVAC fixes or replacements as needed, though they can be expensive. The good news is that homeowners have ways to reduce gradual wear and tear and reduce the frequency of breakdowns.

  • Keep your system clean. Keeping your ductwork, indoor evaporator coil, grills, and condenser fan blades clean enables your HVAC system to function properly and lowers the risk of mold. The National Air Duct Cleaners Association suggests cleaning your HVAC when you notice things starting to get dirty.
  • Monitor for potential problems. Keeping a close eye on the efficiency of your HVAC system — for instance by reviewing your thermostat settings and energy bills — helps you identify and fix problems before they get too expensive.
  • Change the position of your blinds seasonally. Leaving your blinds open during the colder months helps warm your home with passive solar heating. Closing the blinds in warmer seasons helps prevent some heat from getting inside. Doing both helps minimize the demand on your HVAC.
  • Change filters regularly. Air flows through your HVAC system most effectively when you replace or clean the filters every 30–90 days. Also avoid letting debris pile up on the outdoor parts of your HVAC.
ServiceCost
Filter Replacement$60-$161
Condensor Cleaning$1,207-$3,621
Thermostat Repair$80-$201
Ductwork Cleaning$386-$966

How To Choose a Local HVAC Company

Knowing what makes a trustworthy HVAC company is crucial for a smooth installation or repair. An experienced, credentialed HVAC contractor gives you confidence your system can provide consistent heating and air conditioning year-round.

Compare Multiple Bids

Contact at least three HVAC contractors for quotes. Describe your issues and schedule an in-person inspection if possible. Compare companies' diagnoses, suggested repairs, estimated costs, warranties, and timeframes. Avoid companies that pressure you or demand upfront payment.

Check Credentials

When hiring an HVAC company, choose one with technicians that have the appropriate training, licenses, and experience. In all states, HVAC contractors must obtain a Section 608 Technician Certification from the Environmental Protection Agency (EPA). This certification is required for all contractors who "maintain, service, repair or dispose of equipment that could release refrigerants into the atmosphere." An individual must pass an exam (the type of exam depends on what kind of equipment they intend to work with) to be certified by the EPA. All other licensing requirements are handled at the state level.

There are no state-level licensing requirements for HVAC technicians in Minnesota, although all contractors must file a $25,000 mechanical contractor bond with the Department of Labor and Industry. There may also be local licensing regulations, so always check with your city or municipal government to make sure your contractor meets all requirements. You should also look at a company's reviews and complaints on sites such as Google Reviews, the Better Business Bureau (BBB), and Yelp. Pick a company with great feedback and stories of satisfied customers.

Understand Work Details

Make sure you understand the details of any project before starting. When getting HVAC repairs, have your provider list which parts require replacement and why. Get confirmation that your technician will clean and test the entire system after the repair to ensure that everything works. When replacing your HVAC, request that the installation company describe the new model, features, brand, estimated installation time, and energy efficiency. Before signing a contract, ask how your provider plans to accurately size the unit for your home and how much it will cost.

Compare Warranties

A trustworthy HVAC company will stand behind its repair work and installations with a warranty. The longer and more comprehensive the warranty coverage, the better. Carefully compare the fine print between contractors and choose the company that provides the best protection at a reasonable price.

Get Quote in Writing

Get a written proposal before HVAC work starts. A comprehensive quote includes both labor and material costs. Make sure you understand and agree to all terms before signing the contract.

Frequently Asked Questions About HVAC in Duluth, MN

Generally, your HVAC system should be inspected twice a year. After an inspection, your technician will tell you what, if any, services are required. You should also have your system inspected and serviced if you start to notice any issues, such as leaks, strange noises, or unusual smells. If you have ductwork in your home, it should be serviced every few years.

The best times of the year to have an HVAC inspection are during the spring and fall. Technicians are less busy during these times, making it easier to get an appointment. This also helps get your system ready for the summer and winter, the times of the year when it sees the most use.

You can save energy during the winter by reducing the amount of work your HVAC system needs to do to heat your home. Keep your thermostat as low as you can and don't make drastic changes in the temperature — increase or decrease it a few degrees at a time. If you're able to, try switching to a smart thermostat.

Generally, whole-system HVAC installation or replacement takes between one and three days. Installing or replacing a furnace or air conditioning unit may take anywhere from a few hours up to two days. The exact amount of time will vary depending on things like how large your home is, how easily accessible different parts of the system are, and whether your technician discovers any problems.

For a 2,000-square-foot home, try to purchase a furnace that's between 50,000 and 80,000 BTUs (British thermal units). In Duluth, you'll likely look for a furnace on the higher end of or above this range.

For a 2,000-square-foot home, you'll also want to look for an air conditioning unit with between 2.5 and 5 tons of capacity. In Duluth, a unit with a lower capacity may be sufficient. In general, if your home is over 1,000 square feet, central air will be more effective than window air conditioning units.

Your HVAC company might have financing options via a third-party lender, or you might be able to obtain a loan on your own. It's a good idea to discuss payment options with a financial advisor and your HVAC company to make sure that you're choosing the best option for you.

There are several ways you can make your HVAC system more energy-efficient:

  • Keep ductwork clean, and change or clean your air filters regularly.
  • Schedule regular inspections to take care of problems as they arise.
  • Make sure your doors and windows are well-sealed and keep your attic well-ventilated.
  • Install a smart thermostat. If you aren't able to purchase one, try to keep the temperature indoors as close to the outside temperature as you can.
  • When replacing part of your HVAC system, explore Energy Star-certified or other environmentally friendly options.

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