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Welcome

Christensen & Wisnet, "The Good Guys" have been serving the Fox Valley and surrounding areas for 51 years, with our family history going back nearly a century in the HVAC trade. We are a proud 5th generation family business offering service, repairs, sales, and installation of residential and light commercial furnaces, boilers, and air conditioners.

Through our years in business we have worked hard to earn the respect of the valley by being honest, upfront, and "Good Guys". Our service technicians are friendly and skilled. Our installers work efficiently and install equipment with pride. Our estimators are not pushy, both of them with several years working directly in the field. You will be impressed.

We are proud to have one of the largest customer base in the valley. You would be surprised how many of your neighbors chose us.

We service these brands and more!

  • Air Ease
  • Air Temp
  • Amana
  • American Standard
  • Ameristar
  • Aprilaire
  • Arcoaire
  • Armstrong
  • Bard
  • Bosch
  • Braeburn
  • Bryant
  • Buderus
  • Burnham
  • Carrier
  • Century
  • Clare
  • Coleman
  • Comfortaire
  • Comfortmaker
  • Concord
  • Cozy
  • Crown
  • Daikin
  • Day & Night
  • Dayton
  • Ducane
  • Dunkirk
  • Duo-Therm
  • Durozone
  • Ecobee
  • Empire
  • Evcon
  • Everrest
  • Fedders
  • Frasier-Johnston
  • Friedrich
  • Frigidaire
  • Fujitsu
  • GE
  • Gibson
  • Goodman
  • Guardian
  • Heat Controller
  • Heil
  • Hitachi
  • Honeywell
  • Intertherm
  • Janitrol
  • Kenmore
  • LG
  • Lennox
  • Lochinvar
  • Luxaire
  • Magic Chef
  • Maratherm
  • Maytag
  • Miller
  • Mitsubishi
  • Moncrief
  • Munchkin
  • New Yorker
  • Olsen
  • Panasonic
  • Payne
  • Peerless
  • Pro1
  • Quietside
  • Rheem
  • Robertshaw
  • Ruud
  • Samsung
  • Sears
  • Singer
  • Slantfin
  • Smith
  • Tappan
  • Tempstar
  • Thermoflo
  • Thermopride
  • Trane
  • Triangle Tube
  • Ultravation
  • Weatherking
  • Weil Mclain
  • Westinghouse
  • Whirlpool
  • White Rodgers
  • Williams
  • Williamson
  • Winchester
  • Xenon
  • York

Fast Service

Our service department is always here and ready to help you when you need us. In nearly all cases we can get out the same day for emergency work during regular hours. We have the capacity that others do not when the extreme temperatures arrive.

If you have any questions on our services visit our info page here.


Over 28,000 homeowners trust us to work on their Furnaces, Boilers and Air Conditioners in the Fox Valley
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Award Winning Customer Service • Skilled Personable Technicians • Trusted by over 29,000 Homeowners in the Valley!

We Service the Appleton, Neenah, Menasha, Kaukauna, Kimberly, Little Chute, Hortonville, Greenville, and surrounding areas.

Address: 4450 W Greenville Drive. Appleton, WI 54913
Phone: (920) 734-1436 Fax: (920) 734-0929
Hours of Operation: 8:00a to 4:30p (Mon-Fri)

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