Your Northwoods Heating & Cooling Specialist

Our Staff


He started working full time on May 20, 1979 for Dahlquist Propane. Within a year he was transferred to the service department and found his nitch. He has a Master Plumbers License, Restricted, Refrigerant Handling License, HVAC Contractor Registration License, and City of Rhinelander Licensed Tradesman to name a few. With over 30 years service experience he now passes his knowledge along to his employees and stays more to the estimating part of the business.

Certifications: NATE, EPA Refrigerant Handling, Carrier Factory Authorized

Wally's daughter, Michelle, runs the office and his son, Joe, does installations for the compnay. Someday hoping to pass the compnay along to the 4th Generation.
Joe Dahlquist

Joined our family: 2002

Joe specializes in equipment installation and Estimating for the company. He will be the 4th generation of Dahlquist's to hopefully carry the Dahlquist name into the future.

Certifications: NATE, Heat N Glo and QuadraFire Factory Certified

Joe and his family enjoy camping, fishing and vacationing in Canada.

Joined our Family: 2001

Michelle is in charge of all the day to day operations of the company. She has also gained tremendous knowledge of the hearth industry and enjoys learing the fireplace side of the business. She also does in home estimates and design work for Installations of hearth products.

Michelle is married and has a son, Brock and a son, Drayke. Her family enjoys fishing, camping, hiking and riding ATV's.
Dennis Ostrom
Service Specialist

Joined our family: 1999

Dennis is very knowledgable of a wide range of Furnaces, Air Conditioners, Boilers, Hearth Products and RV products. He does numerous continuing education classes yearly to keep with the constantly changing times.

Certifications: NATE Certified in 3 categories, EPA Certification for Refrigerants, Quadra Fire Service and Heat N Glo Factory Certified.

Dennis enjoys hunting in Montana with his children and watchingg his grandson grow up.
John Jefferson ( JJ)
Installation Specialist

Joined our family: 2013

He has brought a welcomed charm and humor to the business. JJ is one of our installers, he has caught on very quickly and has become a welcomed sight in many area homes. JJ has an extensive background in mechanics and has a wealth of knowledge to pass on to his fellow employees.

Certifications: NATE, Quadra Fire and Heat N Glo Factory Certified
John Siefert
Hearth Sales

John grew up in the Northwoods of Wisconsin and spent many years in the construction industry as a mason. He specialized in fireplaces and stone work because he loved the creativity natural stone products allowed instead of just the ordinary “cookie cutter” modern building techniques. As the great architect and fellow Wisconsinite Frank Lloyd Wright once said, “ The Hearth truly is the heart of the home”. After a serious injury John was forced to give up the trade he loved but was lucky enough to land a job in the same industry as a Builder rep/ account manager for a Heat & Glo fireplace distributor. He spent many years building relationships that have led to longtime friendships with many of the area’s General contractors and Sub contractors. John is also a longtime resident of Rhinelander where he raised 4 children with his wife Diana. In his free time he enjoys hunting, fishing, hiking the U.P , and spending quality time with the family.
Rick Mihalko
Installation Specialist

Rick started with us in October 2018.
Jim Flick

Jim joined our team in July 2019.
Doug Crum
Installation Specialist

Mike Behrens
Installation Specialist