Reviews - hassgeosyst66985959-131392-sml-1
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Becker County & surrounding area

Financing Available, Accepting Cash, Check, or Credit Card

Detroit Lakes, Frazee, Perham, Park Rapids, MN

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Thanks for ALL the help.  You guys have been great to work with.

Craig R.



Thank you for your promptness in coming to check out the problem with the pressure tank and also the installing of the new one.  The service men that came to do the work are very polite, friendly and are good at what they do.  They desurve a extra pat on the back.                                                                                                                                                  

Thank you, Karen W.


Hass Geosystems Inc,

Thank you for the hard work and for the donations of materials and labor on our fire station addition.  We are really enjoying the new space.  

With sincere appreciation, The Wolf Lake Fire Department



As always, many thanks.  So happy to have you as a part of our MN family.

Blessings, Judy B.


Dennis & Staff,

Jessica and I want to take an opportunity to say "thank you" for all your hard work on our home the past few months.  We know the weather conditions have been less than idealand the design of the home is not the simplest, but we VERY MUCH APPRECIATE  your attention to detail and willingness to get all the details correct.....  It will be fun to see how the in-slab boiler, propane furnace and off peak plenum heater work in combination to efficiently heat the home.  We want to show the appreciation for those helping us build our dream lake home!  We look forward to working with you and your staff again.

Thanks again! Craig & Jessica R.

Dennis and his crew (the two Mikes) did a fantastic job in the installation of duct work and retrofitting an over 100-year-old farmhouse to use a ground source, closed loop geothermal heating/cooling system.  The forced-air ductwork was ingeniously adapted to the decor, despite the wide stone foundation in the basement to restrict the layout.  The cooperation of the Lake Region Electric Coop in burying the pipes using horizontal boring was clean & quick!  The Climate Master heat pump worked well in the coldest January month of the year 2016 at a cost of about $200, without a dual fuel reduced cost of electricity.  That's not bad for such a leaky old 1700sq ft farmhouse, which is insulated moderately well! Dennis Hass was faithful to work out the "bugs" of the system and really knows his business!  The project took quite a few months, but it was a massive, varied task.  The federal government and electric company rebates all worked to reduce the cost from $27,000 (includes the wiring and 200 Amp upgrade) to $15,650.  (It's too bad the Federal rebate ends in 2016.)  We really appreciate not having to worry about a gas tank or furnace exploding or having to hide a "white whatle" propane tank out in the yard.

Kathleen S.

Proud Sponsors Of....

  • Wolf Lake Fire Pancake Feed

  • Wolf Lake Resuce Fall Feast

  • Frazee Turkey Days

  • Abercrombie Fire & Rescue Rodeo

  • American Heart Association