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Landmark Lesson

Your Madison Heating and Cooling Contractor

Welcome to Landmark Heating and Cooling. We are an HVAC contractor serving the Greater Madison Wisconsin area. We have been serving residents of Greater Dane County since 1955 with the basic premise of always putting our customers first; we listen to our customers and deliver what they want and follow through on our promises. Because we also take pride in providing excellent workmanship, products and services, we only hire the best HVAC technicians in the Greater Dane County area. Our commitment to hiring the best people who are focused on customer satisfaction has helped us maintain a 95% customer satisfaction rating based on surveys that are sent out to all customers receiving product installations. Our team’s drive for excellence helped us earn and maintain the designation of being a preferred Dave Lennox Premier Dealer since 1966. This designation allows Landmark Heating and Cooling access to the top-of-the-line Signature collection of Lennox products, allowing us to offer our customers the best furnaces, air conditioners, and indoor air quality products available.

Heating & Air Conditioning Products & Services

We offer a complete line of HVAC products and services. Whether you need new products focused on heating, air conditioning or indoor air purification, or furnace repair and air conditioning repair services, you can have confidence that Landmark Heating and Cooling will deliver high quality and complete satisfaction.

As a Dave Lennox Premier Dealer, we offer some of the best furnaces and air conditioners available. Our technicians are trained to ensure that each product installed is the best fit for your home or business and budget.

We also offer 24-hour emergency service when you need maintenance or repair the most; we can help get your heating or air conditioning system running as soon as possible so you can be assured a comfortable experience.

If you are looking for a heating and air conditioning contractor in the Greater Madison or Dane County area, please call us today for a Free consultation or estimate. We will ensure you get the products and service you deserve.

We Offer Some of the Best HVAC Products in the Industry


We install brands of furnaces that offer the best efficiency ratings in the industry. Stay warm during the cold Wisconsin winters with a new furnace from Landmark Heating and Cooling. Browse our line of Lennox furnaces

Central Air Conditioners

Seeking the perfect air conditioner for your home or business? We offer SEER ratings from 13 to 25+ to ensure your comfort throughout the warm Wisconsin summers. Browse our line of Lennox air conditioners

Indoor Air Quality

We have the best line of air purifiers, cleaners, humidifiers & dehumidifiers, filters, and other air quality products to help you breathe easier. Stay healthy with cleaner air and Landmark. Browse our line of Air Quality products


Have an older home with steam, hot water or radiant heat? We can help as we offer some of the top brands in the industry. Browse our line of boilers

Heat Pumps

Heat pumps help maintain a comfortable environment while using lower energy consumption than traditional heating and cooling systems. Browse our line of boilers

Water Heaters

We install A.O. Smith and Rinnai water heaters and service all brands. We also provide Capitol water softeners to help protect your home’s plumbing. Browse our line of water heaters


Looking for a gas or wood-burning fireplace? We offer a wide range of makes and models to meet any need. Visit our showrooms in Warren and Cottage Grove or Browse our line of fireplaces here

Duct Cleaning

Get rid of the dust, debris and dirt that is present in your home’s air by cleaning your ducts. Clean your ducts and breathe easier. Call us today or review our duct cleaning services here

Furnace & Air Conditioning Repair

Schedule your annual maintenance or have our trained and experienced technicians repair your heating or cooling system to ensure you live in comfort year-round. View our Maintenance Program here