No trip charges
24/7 Service
40 Years of Experience



Does one room feel warm and another cold? No heat and need it ASAP? We can get your furnace working properly to protect your family from the cold...

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Air Conditioning

Feeling hot and sticky during summer? Want an air conditioner that operates at maximum efficiency on those days you need cool air? We can help...

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Indoor Air Quality

Indoor air can be five times more polluted than outdoor air! We can help clean and filter your home's environment to remove pollutants and provide clean fresh air...

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Committed to quality comfort for your family and business

Located in McFarland, Wisconsin with over 40 years of experience, D & J knows the heating and cooling business inside and out. We are dedicated to providing you with quality repair, installation and replacement of your furnace or air conditioner and bringing you solutions to a cleaner home with better indoor air quality.

We offer exceptional HVAC knowledge for all of your heating and air conditioning needs and promise you outstanding customer service. We are fully licensed and North American Technical Excellence, Inc. (NATE) certified, offering over 40 years of combined experience! Our service includes installation, repair service and routine maintenance for all brands of furnaces, air conditioners and boilers. Headquartered in McFarland, D & J Heating and Air Conditioning will provide service to Madison and all the surrounding communities. We offer prompt service and competitive prices with no trip charge.

Call Now & Get Assistance: 608-663-4822

▪ Preventative Maintenance
• Furnaces (Natural, propane & oil)
• Duct Systems
• Air conditioners
• Air cleaners
• UV Lights
• Humidifiers
• Air to Air Heat Exchangers for efficient fresh air
• Hot Boilers
• In Floor Radiant Heat
• Generators
• Hot Water Heaters
• Zoning
• Water Treatment
• Extended Warranties
• Service Protection Plans
• Furnace & A/C Tune-Ups & Safety Inspections
• Free Installation Estimates
• 24 Hour Emergency Service
• Emergency Installations