10 Best HVAC Companies in Greenfield, WI

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Last Updated: February 25, 2025

On average, American homeowners devote 55% of their home energy usage to heating and cooling, according to the Department of Energy. You don't want to spend more than necessary on heating and cooling your Greenfield home, so it's critical that all systems are working properly.

We've put together this guide to Greenfield's top HVAC companies to help you find the best person for your job and get your system into top shape.

Top 10 Best HVAC Companies in Greenfield

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Professional Services Heating, AC, and Electric Repair

Professional Services Heating, AC, and Electric Repair Logo

Our Rating

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113 Riverview Dr, Thiensville, WI 53092 (262) 379-3662 professionalservicestoday.com

Clear pricing policy

Informative resources

Prompt service delivery

Reliable customer support

Free quotes

Services Offered

Ductless
Inspection
Filtration
Maintenance
Indoor air quality
Furnace repair
Boiler installation
Emergency services
Boiler repair
Duct cleaning
Furnace installation
Smart home integration
Ac repair
Ac installation

Rosenthal Heating & Air Conditioning

Rosenthal Heating & Air Conditioning Logo

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User Rating

1000 Lotus Dr Unit 8, Silver Lake, WI 53170 (262) 534-7330 4rosenthal.com

Reliable customer support

Clear pricing policy

Prompt service delivery

Informative resources

Free quotes

Services Offered

Indoor air quality
Emergency services
Boiler installation
Ductless
Ventilation
Furnace installation
Ac installation
Radiant heating
Furnace repair
Zoning systems
Duct cleaning
Maintenance
Ac repair
Filtration

Libertyville Unique Indoor Comfort - Now AA Service Co

Libertyville Unique Indoor Comfort - Now AA Service Co Logo

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User Rating

624 Second St, Libertyville, IL 60048 (847) 362-1910 aaserviceco.com

Free quotes

Informative resources

Reliable customer support

Clear pricing policy

Services Offered

Boiler repair
Ac installation
Ac repair
Filtration
Maintenance
Furnace repair
Inspection
Emergency services
Boiler installation
Ductless
Radiant heating
Furnace installation
Zoning systems
Indoor air quality

Precision Today Plumbing Heating Cooling Electrical (Miller's Area Heating)

Precision Today Plumbing Heating Cooling Electrical (Miller's Area Heating) Logo

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User Rating

112 Center St, Grayslake, IL 60030 (847) 752-4746 precisiontoday.com

Reliable customer support

Free quotes

Clear pricing policy

Prompt service delivery

Informative resources

Services Offered

Indoor air quality
Boiler repair
Maintenance
Filtration
Boiler installation
Ac repair
Inspection
Furnace installation
Duct cleaning
Ac installation
Ductless
Furnace repair

Lake County Mechanical, Inc

Lake County Mechanical, Inc Logo

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User Rating

328 North Ave, Antioch, IL 60002 (847) 989-4649 lakecountymechanical.com

Clear pricing policy

Reliable customer support

Services Offered

Duct cleaning
Maintenance
Furnace repair
Indoor air quality
Ac installation
Boiler installation
Filtration
Ac repair
Ductless
Emergency services
Furnace installation
Zoning systems
Ventilation
Radiant heating
Boiler repair

Air Kings Heating And Cooling

Air Kings Heating And Cooling Logo

Our Rating

User Rating

18880 Oak Ave, Mundelein, IL 60060 (847) 621-2263 callairkings.com

Clear pricing policy

Informative resources

Free quotes

Reliable customer support

Prompt service delivery

Services Offered

Furnace repair
Boiler repair
Ac repair
Indoor air quality
Boiler installation
Duct cleaning
Filtration
Emergency services
Ductless
Furnace installation
Maintenance
Ac installation

West Allis Heating & Air Conditioning, Inc.

West Allis Heating & Air Conditioning, Inc. Logo

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User Rating

1827 S 76th St, West Allis, WI 53214 (414) 543-2800 westallisheating.com

Informative resources

Reliable customer support

Services Offered

Ac repair
Maintenance
Furnace installation
Emergency services
Radiant heating
Indoor air quality
Furnace repair
Ac installation
Boiler installation
Duct cleaning
Ventilation
Ductless

GSHA Services, LTD

GSHA Services, LTD Logo

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User Rating

11 N Skokie Hwy #111c, Lake Bluff, IL 60044 (224) 507-6107 gshaservices.com

Prompt service delivery

Free quote

Reliable customer support

Informative resources

Clear pricing policy

Services Offered

Duct cleaning
Furnace installation
Maintenance
Ventilation
Furnace repair
Ac installation
Ductless
Emergency services
Inspection
Indoor air quality
Ac repair
Boiler installation

Absolute Comfort HVAC LLC

Absolute Comfort HVAC LLC Logo

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User Rating

30913 Shady Ln, Waterford, WI 53185 (262) 664-9284 absolutecomfortwi.com

Informative resources

Free quotes

Clear pricing policy

Reliable customer support

Services Offered

Furnace installation
Boiler installation
Furnace repair
Emergency services
Boiler repair
Maintenance
Ac repair
Ac installation
Duct cleaning
Ductless
Ventilation
Indoor air quality

American Comfort Solution

American Comfort Solution Logo

Our Rating

User Rating

25179 IL-173, Antioch, IL 60002 (262) 206-7488 americancomfortsolution.com

Informative resources

Services Offered

Duct cleaning
Ductless
Furnace installation
Boiler installation
Ac repair
Furnace repair
Boiler repair
Emergency services
Maintenance
Filtration
Indoor air quality
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

An HVAC system that's malfunctioning or outdated likely needs professional attention for repairs or replacement. Watch for these signals that your system needs service:

  • Odd noises when the system turns on
  • Higher than normal energy bills
  • Frequent breakdowns and need for repairs
  • Thermostat malfunctions or temperature control issues
  • Corrosion, cracking, or rust
  • Refrigerant leaks
  • Poor air circulation or uneven heating/cooling
  • An HVAC system that's over 15 years old

If you notice any of the above, it's wise to have a local HVAC technician inspect your system. They can diagnose problems and recommend whether repair or full HVAC replacement is required.

Cost of HVAC Installation and Maintenance in Greenfield

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

  • Split or mini-split: If your home lacks the right ductwork for central heating or air, you likely have a split HVAC system. Split or mini-split systems consist of internal units that control the temperature in individual rooms, and that are all connected to an outdoor unit.
  • Hybrid split: A hybrid split HVAC system functions very similarly to a standard split system. It has the advantage of being able to utilize either gas or electricity for power.
  • Heat pump: Heat pumps exchange warm and cool air between your home and the outside. These systems don't make their own heat or AC, so they work more effectively in milder climates.
  • Packaged heating and air: Packaged HVAC systems are a good choice for smaller homes. These systems have a single combined AC and heating, normally located in an attic or basement. They're small, cost-effective, and easy to maintain.

HVAC maintenance costs differ depending on what services are needed. HVAC systems are complex and might require different maintenance services. Prices for some common services are as follows:

HVAC Unit TypeCost
Split$1,949-$4,968
Hybrid Split$3,949-$7,275
Heat Pump$3,058-$31,155
Packaged Heating and Air$256-$426

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 minimize progressive deterioration and reduce the frequency of breakdowns.

  • Change filters regularly. Replacing your air filters or washing them every 30–90 days allows efficient air circulation through your HVAC system. Also try to keep debris from accumulating on the outdoor sections of your HVAC.
  • Monitor for potential problems. Keeping an eye out for problems, for instance by routinely checking your thermostat and energy bills, helps you resolve them before they get too expensive.
  • Keep your system clean. Keeping your ductwork, grills, indoor evaporator coil, and condenser fan blades clean helps your HVAC system function effectively and lowers your risk of mold. The National Air Duct Cleaners Association recommends cleaning your home's HVAC when you notice it starting to get dirty.
  • Change the position of your blinds seasonally. Closing your blinds in the summer blocks some passive solar heat from getting indoors. Opening the blinds in the winter allows this same heat to help warm your home. Both of these measures help decrease the work required from your HVAC system.
ServiceCost
Filter Replacement$64-$171
Condensor Cleaning$1,279-$3,838
Thermostat Repair$85-$213
Ductwork Cleaning$409-$1,023

How To Choose a Local HVAC Company

It's important to know what makes a good HVAC company. Working with a contractor that's properly licensed and highly experienced will give you confidence that they can fix your system, providing you with effective heating and cooling in your home.

Compare Multiple Bids

Contact at least three HVAC companies for quotes. Explain the issues and have specialists visit to inspect your HVAC system if possible. Compare the providers' explanations, solutions, estimated costs, timeframes, and warranties. Avoid companies that pressure you or demand payment upfront.

Check Credentials

It's important to choose an HVAC company that employs technicians with the proper qualifications and expertise. In all states, HVAC contractors have federal requirements set by the Environmental Protection Agency (EPA). To obtain the EPA Section 608 Technician Certification, contractors must pass an exam (the type of exam depends on what kind of equipment they intend to work with). Section 608 certification is required for all technicians who "maintain, service, repair or dispose of equipment that could release refrigerants into the atmosphere." All other licensing requirements are handled by the state.

There are no mandatory state-level licensing requirements for HVAC contractors in Wisconsin – contractors simply need to register with the Department of Safety and Professional Services. An individual can optionally become certified as an HVAC Qualifier, which requires four combined years of education and experience and may exempt them from some local regulations. Whether your technician is an HVAC Qualifier or not, you should be sure that they meet any local requirements. You should also check a company's reviews and complaints with organizations such as Google Reviews, Yelp, and the Better Business Bureau (BBB). Choose a company with positive reviews and a history of good customer service.

Understand Work Details

Always make sure you know what a company’s process is like. When HVAC repairs are needed, ask your provider to explain which parts require replacement and why. Confirm that your technician will clean and test the system after finishing the work to ensure proper operation. When replacing your HVAC, have the contractor explain the new energy efficiency, features, brand, model, and estimated installation time. Before work starts, make sure you understand how your provider will determine the right system size for your home and what the price will be.

Compare Warranties

Reliable HVAC companies provide warranties for their services. Broader coverage is better, so make sure to compare warranties between companies. Choose the one that provides the most comprehensive coverage at a reasonable cost.

Get Quote in Writing

Get written quotes before beginning HVAC work. The quote should outline costs for both labor and materials. Read all terms carefully before signing.

Frequently Asked Questions About HVAC in Greenfield, WI

You should have your HVAC system inspected approximately twice yearly. Following an inspection, your technician will inform you if any services are needed. You should also schedule an inspection if you notice new issues such as unusual smells, leaks, or strange noises. If your home has ductwork, you should have it inspected every few years.

Generally, it's a good idea to schedule inspections in the spring and fall, as technicians tend to be less busy at these times. This also helps make sure your system is prepared for the summer and winter, when it likely 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 is comfortable and avoid making drastic changes in the temperature — only increase or decrease it a few degrees at a time. If you're able to, try switching to a smart thermostat.

It takes around one to three days to have an HVAC system installed or replaced. If you only need an air conditioning unit or a furnace, this might take anywhere from a few hours up to two days. This timeline can be influenced by the size of your house, the accessibility of your system, and any new issues your technician runs into.

For a 2,000-square-foot home, you should look for a furnace that's between 50,000 and 80,000 BTUs (British thermal units).

For a 2,000-square-foot home, you'll also want to purchase an air conditioning unit with around 2.5 to 5 tons of capacity. In Greenfield, a unit with a lower capacity may be sufficient. Typically, if your home is larger than 1,000 square feet, central air will be more effective than window air conditioning units.

Usually, HVAC financing is through a third-party lender. If your HVAC company doesn't have financing options, you may consider taking out your own loan. Be sure to talk to a financial advisor and your HVAC company to determine what options are available and appropriate for your situation.

There are a number of ways you can make your HVAC system more energy-efficient:

  • Keep your air ducts clean and clean or change your air filters regularly.
  • Have regular inspections to take care of problems as they come up.
  • 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 your inside temperature as close to the outside temperature as you can.
  • When replacing part of your system, see if there are Energy Star-certified or other environmentally friendly options.

Other Greenfield, WI Home Services

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