Give us a call now for an immediate match with a local pro.
Click to Call(833) 824-3371(833) 824-3371
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.

Our Rating
User Rating
Clear pricing policy
Informative resources
Prompt service delivery
Reliable customer support
Free quotes
Services Offered

Our Rating
User Rating
Reliable customer support
Clear pricing policy
Prompt service delivery
Informative resources
Free quotes
Services Offered

Our Rating
User Rating
Free quotes
Informative resources
Reliable customer support
Clear pricing policy
Services Offered

Our Rating
User Rating
Reliable customer support
Free quotes
Clear pricing policy
Prompt service delivery
Informative resources
Services Offered

Our Rating
User Rating
Clear pricing policy
Reliable customer support
Services Offered

Our Rating
User Rating
Clear pricing policy
Informative resources
Free quotes
Reliable customer support
Prompt service delivery
Services Offered

Our Rating
User Rating
Informative resources
Reliable customer support
Services Offered

Our Rating
User Rating
Prompt service delivery
Free quote
Reliable customer support
Informative resources
Clear pricing policy
Services Offered

Our Rating
User Rating
Informative resources
Free quotes
Clear pricing policy
Reliable customer support
Services Offered

Our Rating
User Rating
Informative resources
Services Offered
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:
An HVAC system that's malfunctioning or outdated likely needs professional attention for repairs or replacement.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:
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.
HVAC installation or maintenance costs vary depending on your system. Common HVAC unit types include the following:
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 Type | Cost | |
|---|---|---|
| Split | $1,949-$4,968 | |
| Hybrid Split | $3,949-$7,275 | |
| Heat Pump | $3,058-$31,155 | |
| Packaged Heating and Air | $256-$426 |
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.
| Service | Cost | |
|---|---|---|
| Filter Replacement | $64-$171 | |
| Condensor Cleaning | $1,279-$3,838 | |
| Thermostat Repair | $85-$213 | |
| Ductwork Cleaning | $409-$1,023 |
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.
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.
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.
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.
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 written quotes before beginning HVAC work. The quote should outline costs for both labor and materials. Read all terms carefully before signing.
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:
Loading map...