Choosing a Heating & Air Conditioning Contractor

Whether you are scheduling a yearly check-up or looking to purchase a new system, choosing a heating or air conditioning contractor can be overwhelming.  Of all the choices in the phone book, where do you start?  Here are some tips:

1. Talk to your friends and neighbors.  It is quite likely that someone you know has recently worked with a trustworthy contractor.  Other potential referrals may come from real estate agents, inspectors, and home-improvement stores. 

2.  Use online research tools to find reputable contractors in your area.  Sites like has a database listing of contractors for every state:
Choosing a Contractor

3. Set up appointments with the contractors to whom you have been referred (or found online).  This initial appointment should be complimentary.  At this appointment, the contractor will inspect your current equipment and collect data about your home that will affect the type of unit the home requires.  You should receive a written estimate at, or shortly after, your appointment. 

Don’t be shy about asking for state and local licenses, liability forms, and membership in professional organizations like North American Technician Excellence (NATE) or HVAC Excellence.  Ask each contractor how long they have operated in your area and how many homes he or she has serviced. 

If you would like further information, ask the contractors for references.  This person will be working in your home on a potentially costly install or repair, so it is important that you feel completely comfortable with your choice.

Choosing Heating and Cooling Contractor

4. Compare the estimates, looking for similarities and differences.  If a contract is much higher or lower than the others, call the contractor and ask them to explain.  It’s possible that they either skipped an important point or noticed something the others missed.  Check the references if you have requested them.

5.  Select the bid that has the highest value.  This should be based on the combination of product, service, and price.  Ask for a detailed written description of the work they will complete, including all costs.  Request a specification for costs on ductwork, should the contractor discover new ductwork is needed during installation.  Warranty information should be clearly stated on the contract, including the manufacturer’s warranty on parts. 

If this is a new installation, ask for special incentives on yearly check-ups.  For example, if you are installing a furnace and air-conditioning unit in the fall, the company may offer to visit your home again in the spring at no cost to check the air conditioner. 



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3500 Newville Rd, Janesville, WI 53545 | Phone: 608-758-9882 | Fax: 608-758-984

Regions Served: Don Martin Heating and Cooling Provides Products and Services To The Following Communities and Counties In Southern Wisconsin and Illinois:

Wisconsin Counties Served Wisconsin Cities Served Illinois Cities Served
Rock County, Wisconsin
Walworth County, Wisconsin
Dane County, Wisconsin
Jefferson County, Wisconsin
Green County, Wisconsin
Janesville, WI
Elkhorn, WI
Delavan, WI
Whitewater, WI
Fort Atkinson, WI
Milton, WI
Edgerton, WI
Macfarland, WI
Madison, WI
Evansville, WI
Orfordville, WI
Darien, WI
Beloit, WI
Lake Geneva, WI
Mukwonago, WI
East Troy, WI
Lake Mills, WI
Brodhead, WI
Monroe, WI
Deerfield, WI
Oregon, WI
Evansville, WI
Albany, WI
Juda, WI
New Glarus, WI
Jefferson, WI
Johnson Creek, WI
Stoughton, WI
Cambridge, WI
Walworth, WI
South Beloit, IL
Rockton, IL
Roscoe, IL
Durand, IL
Harvard, IL
Poplar Grove, IL
Capron, IL
Shirland, IL