"Geothermal Twin Cities MN" - Dirt Cheap Heating & Cooling
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What Our Customers and Collegues Are Saying

Truly the Best of the Best

Provided a Clear Long-Term Plan

We bought a house with a Geothermal system and knew nothing about it. When it needed servicing, Massmann was quick to send someone out who was very kind, explaining everything I need to know about our system, maintaining it, and what went wrong with it. Everything was taken care of within an hour and it didn't cost us an arm and a leg! He even gave us a good, clear long-term plan which helps us better plan for the remaining life of our system. I'm glad to have such good, local service for our geothermal system.

- Pete P - Geothermal System, Big Lake MN


Multiple Solutions for Geothermal Systems

Extremely knowledgeable company! We have had trouble with a few companies in the past that could not come up with a solution to our geothermal system. It would freeze up on hot days and wasn't able to circulate the cold air throughout the house. As soon at Massmanns came up they came up with multiple solutions. Ben was very detailed and very professional. We decided to install a blower motor and freeze sensor. Our system has been working GREAT. In addition to their detailed work, they came out right away, and even followed up after the work was complete. I highly recommend Massmans! They know what they are doing!

- Angel H - Geothermal system, Plymouth MN


Polite, Professional & Neat

My furnace went out in January. Massmann Geothermal came out quickly to evaluate my issue. I had them replace my furnace and they had it completed the next day. The installers were very polite, professional and neat. I was very satisfied with the service and quality of work I received from Massmann Geothermal and would recommend them to anyone in need of heating/air needs.

- Jean M - Furnace Repair, Oak Grove MN


Good Service

We are impressed with the good service. When we call with a question or need someone to come out they are always here within a day. Friendly staff.

- Curt & Darcy J. - Geothermal system, Maple Plain MN


Friendly & Knowledgeable

Everyone is friendly and knowledgeable! Work is done right the first time and in a timely manner.

- Josh K - Geothermal system, Royalton MN


 Helpful & Knowledgeable

Tech was very helpful and knowledgeable. Would recommend.

- Jamie S - Geothermal system, Big Lake MN


Professional & Timely

I have had professional and timely service each and every time they have been to my home to service my geothermal equipment. I highly recommend this company.

- Becky J. - Geothermal system, Forest lake MN


Quick Solutions to Problems

After having problems with our geothermal heat pump for over a year, we called Enertech and asked them for the name of their best HVAC dealer in the area and they gave us your company name - Massmannn Geothermal. You sent out your technicians and they quickly solved the problem. Enertech was 'dead right' - you and your entire team is the very best and we are extremely grateful! Thank You!

- Jeff B. – Geothermal system service, Buffalo MN


Excellent Service, Great Service Technician

We had Massmann out for some service work to get our heated floors working. They really have not worked properly for several years. Their service technician, was on time and re-educated us on our system, so we now know how to operate the system with confidence. He found and replaced a faulty component and the heated floors have been working perfectly since. When your feet are warm, you are warm.

- R. B. – Geothermal In-Floor Heating System, Buffalo MN


Straightforward Answers & Proven Solutions

I found Massmann to be very easy to deal with, offering straightforward answers and solutions to my geo thermal and hvac problems. Their onsite tech was very knowledgeable and I felt like he had my best interest at heart. I highly recommend them and will use them for my future hvac needs. Peter C. 4. High quality from start to finish Bottom line Massmann does an outstanding job at every detail. Engagement thru the end products are top notch. I had in floor tubing and a geothermal system installed on our new house. You feel great with the other contractors are asking you who did the tubing and saying it is the best they have ever seen. Knowing that every detail has been taken care of at the highest quality gives me great piece of mind for the future.

- Peter C. – Geothermal system service, Rogers MN


The Best All Around! Knowledgeable, Courteous, and Friendly!

All the technicians that I have worked with are great! They really know geothermal systems well, and take the time to explain what is happening, why it is happening, and what can be done to resolve the situation quickly and affordably! Our systems weren't originally installed by Massmann, so they have had to find affordable solutions to some issues that have come up due to our systems being installed early on in the world of geothermal technology. The original installers also did things a bit differently than Massmann would have, which has created some unique challenges that the tech's have had to find ways to work around. We rely solely on our Geo. systems for heating and cooling, so it is very important when a unit is down that it gets up and running ASAP! Massmann does everything they can to work us in as soon as the schedule allows. Massmann's office staff is honest, realistic and fair with their scheduling. If they have the guys booked solid, and it is not an emergency they set up a realistic time frame to get the issue taken care of. In more emergency situations, they all ways try to work it in as soon as they can. They ask if we can be flexible with our schedule so that if their tech has unexpected time available in their schedule, they will call and set up a time to meet and diagnose the issue. Again, this is on the small stuff. That said, I would whole heartedly recommend Massmann Geothermal for your HVAC needs!

- Ken – Geothermal service, Zimmerman MN



I am very pleased at the professionalism of Massmann Geo. I dealt directly with Jason (owner). Jason gave me a quote on the system that was right for me. I was also dealing with another company that wanted to replace my furnace and gave me a bid close to $30,000. Jason was a lot less and determined my furnace was fine and only gave me what I needed. I just got my first electric bill since the system was installed and I spent $27 to heat, air condition and heat water for one month. Fantastic! I have been recommending Massmann Geothermal to everyone I talk too. All of his workers were very helpful, knowledgeable and enjoyed working for Jason. This is a sign of an excellent company. I can't say enough for the great job they did. Thank you, Jason and all your staff!

- Ken, church – Geothermal Service, Zimmerman MN


Timely, Friendly & Hard Working

We are extremely pleased with our recent installation of the geothermal system. Entire staff were friendly and worked very hard to get the project done in a timely fashion. Answered all our questions. Would recommend them to anyone considering this as their heating and cooling option.

- Darcy J. – Geothermal install, Maple Plain MN


Expect the Best from Massmann

The reason Massmann is considered a premium partner in simple: They are committed to providing exceptional service and workmanship on 100% of the work they do for Gordon James. Our customers expect only the best from us. In turn, we expect on the best for our partners, and that’s exactly what we get from Massmann.

- John Q. – Furnace and A/C install and service, Twin Cities MN


Our company has worked with Jason Massmann and his company since 2007 where we hired Jason to install a 7-ton geothermal system. We decided to sign a contract with Jason once we were confident that the products being sold, the high quality of installation and competence amongst his staff was thoroughly checked out. 10 years later, we are very pleased with the performance of the system and the homeowner has ZERO complaints about their HVAC system. Our working relationship has carried on 10 years for a reason. The crew at Massmann has been constant over the years, which is different from other companies with high amounts of turnover with employees. This is a positive attribute for all parties affected from the standpoint of consistency. When the inevitable problem arises, the install team and service teams are readily available to assist in getting the system back to operational. The key installers - Jon, Corey, Clint and the service tech Ben all do a fantastic job working with the clients to help understand what is installed in their home. These guys know how to make the mechanical room look and operate in a streamlined and organized way. Today's systems are complex and are tied all together - these guys all make it easy to understand. Using high quality mechanical equipment makes all the differences in our homes. A motto that our company lives by is one of Benjamin Franklin - "The bitterness of poor workmanship remains long after the sweetness of low price is forgotten." This is true with anything in your home. Jason knows this and lives by similar values. Jason and his office staff are available to answer the phone and receptive to emails. I highly recommend Massmann Geothermal for anything HVAC. Do your due diligence and find out the differences between them and the competition - you will be pleasantly surprised.

- Andy M. – Furnace and A/C install and service, Twin Cities MN


Used for Many Projects

Jorgenson Homes has used Massmann Geothermal for many of our new build projects as well as some remodeling projects. We are very pleased with the professionalism, and dependency that you provide. We know that when you commit to being on a job site, we can always rely on you to get your work completed in a timely manner. We have always felt welcome to call with any questions or concerns, and if there are any issues on the job site, they always get taken care of. We also really appreciate the thoroughness of your estimates, they always include a good amount of details, and that the calculations have already been figured. We will be using Massmann Geothermal for more work in the future.


You Can Rely on Massmann


We have used Massmann Geothermal for many of our new build projects as well as some remodeling projects. We are very pleased with the professionalism, and dependency that you provide. We know that when you commit to being on a job site, we can always rely on you to get your work completed in a timely manner. We have always felt welcome to call with any questions or concerns, and if there are any issues on the job site, they always get taken care of. We also really appreciate the thoroughness of your estimates, they always include a good amount of details, and that the calculations have already been figured. We will be using Massmann Geothermal for more work in the future.

- Jeff J., Builder – Furnace and A/C install and service, Zimmerman MN


Massmanns Recommendations Saved Us Money

Massmann Geothermal did a great job installing my Geothermal system in Princeton MN. I’m very satisfied with the results. Massmann’s knowledge and expertise in geothermal system design helped to appropriately size my heating & cooling system. I thought I would need a much larger system than I needed. Massmann Geothermal’s recommendation saved me money on purchase cost and ongoing operating costs. They have great support & follow-up! I would DEFINITELY use their services again and would refer them to my family & friends!

- Greg Puent - Geothermal install and service, Princeton MN


Excellent Geothermal Service

We are very glad we decided to install a Geothermal System. Massmann is a great company and an awesome group of people to work with. Jason was always helpful answering any questions we had and addressing any of our concerns. We had a couple of rooms that were colder in winter and warmer in the summer than the rest of the house. That issue was addressed and Jason came up with a fix. Those rooms are now comfortable year-round. He and his crew were always courteous and treated our home respect and care. In our first year with the geothermal system (2014 and remember how cold that was. Burr) these were our costs: Heating $375 Cooling $47 and hot water $133. With our old heating system, it would have cost us between $1500 and $2500 depending on the price of propane. Clearly, we saved over $1000 our first year. We have found that we no longer need to keep our thermostat set at 65- 67 degrees, we can keep it at any temp we choose and not worry about the cost. Generally, 70 or 72 degrees, which is very comfortable. We don’t notice temperature changes like we did with our old heating system. At first you will notice the geothermal system runs longer and more frequent and that keeps the temperature consistent.

Because 2014 was so cold and propane was in high demand and supplies were limited it shot up to $4 a gallon. So, 300 gallons which would last about 5 or 6 weeks would have cost $1200. Unusual but could happen again. The geothermal system is more expensive up front but Jason will calculate and run a printout to show you how long it will take to pay for itself with the yearly energy savings. If you are thinking of replacing your heating system or building a new home you really should consider calling Massmann Geothermal for excellent service.

- Ang and Jon Kotnik - Geothermal service and install, Princeton MN


Highly Rated Geothermal Company

We became aware of Massmann Geothermal at the Home Show in Minneapolis this past spring. Even though we are nearly 2 hours south of Massman’s home base, they were interested in quoting our job. After receiving quotes from Massmann and another installer that were highly rated, we chose to go with Massmann. To date, we are extremely pleased with our decision. Jason did an exceptional job of describing the project ahead of time and it was executed exactly as described.

We love the energy efficiency and cost savings vs our forced air furnace and central air conditioner. The geothermal unit is quiet and clean and it’s great to have the energy efficiency for both heating and cooling so we can run the heat in the morning after the cool nights and A/C in the afternoon if it gets too warm. In our experience, the best run businesses tend to have owners that are very “hands on” as is the case with Massmann. Jason was on-site during the project and all crew members knew their role and performed it well. We would recommend Massmann to anyone looking for a Geothermal system.

- Troy and Lori Ammann - Geothermal service and install, Le Sueur MN


Professional & Accommodating Geothermal Service

Massmann Geothermal and their crew were very professional & accommodating. They removed the old system & installed the new one in less than a day. They were very careful to make sure nothing was damaged when taking out the old system since it was quite large.

They answered all my questions & advised me on how to keep my system running properly. For Geothermal I would not go anywhere else and when someone asks about Geo I only have Massmann in my phonebook.

- Jenine C - Geothermal service and install, Isanti MN


Competitively Priced Geothermal

Jason is competitively priced on his installation. He & His crew’s installation experience are unbeatable. After our well field (loop field) was installed Jason & crew managed to install the entire system in one day to get it operating, while also removing the old A/C unit & furnace. The new system moves a higher volume of air in the winter time so it was a different sound to get used to. The summer operation is quiet & cools the house very quickly. It took a couple of evenings during peak shaves by the power company to figure out what the settings for the furnace should be, because the furnace fan doesn’t know the heat pump is off until the temperature drops off by a couple of degrees to start our back up propane.

Jason’s staff was prompt for coming back to make adjustments & replace a part in the controls that did not seem to operate correctly. Now we get to the best part: we heated the entire house for $240.00 for the winter of 14/15. The home is 2,100 sq. ft. I would do geothermal in anything I would ever build new. The extra initial cost is well worth the investment.

- Gary & Jean N - Geothermal install and service, North Field MN


Quick & Efficient Geothermal Service

Massmann Geothermal and Mechanical did a fabulous job of quickly and efficiently installing our new system. They took less time than they predicted they would need, they cleaned up after themselves and left us with a house that is much warmer and comfortable in all corners in the winter and a pleasure to be in during the summer months. Our previous system was expensive to run, left some rooms very cold in the winter and hot in the summer. Our annual cost for heating costs were about $2000 per year, and our cooling costs were $400 or more. Our electrical costs currents for cooling are none. Our heating cost $600 per winter. Jason is courteous, committed to standing behind his company and the work they do. It was the right decision to have Massmann install a geothermal system in our home.

- Deborah H - Geothermal install and service, Elk River MN


Commended for Fine Installation of Geothermal Systems

My Geo System has been operating for about 3 months. I am pleased with its operation and looking forward to next winter and having some nominal heating costs. Your crew should be commended on the fine installation work they did. I was most impressed by their expertise in getting the job done right. It was a pleasure to have them here. Thank you and your company for making this installation easy.

- Mike M - Geothermal install and service, North Branch MN


Advocate for Geothermal Systems

You installed our geothermal system May of 2014 after a very long, cold & expensive winter heating our house with propane. Jason was very professional and informative. Thought the initial price was a little over whelming (thank god for the 30% tax credit) we saw on paper that it would cut our heating cost big time. After a year I can testify that their estimation was accurate! Before our average propane bill from Dec-May was $600.00/month. With the geothermal the most we paid was $100/month. Hot water hasn’t been over $12.00 and to run the air conditioner hasn’t been over $25/month.

The best part is we stay cool in the summer and warm in the winter =) Because of the huge propane cost, we couldn’t keep it at the temperature we would’ve liked. Oh, and what’s even better? I don’t think we used a stitch of propane all winter! So yes, I’m very much an advocate for the geothermal system & Massmann is a great team to work with!

- Justin & Kim D – Geothermal and service, Princeton MN


Took Time to Explain Geothermal Systems

Jason was much more organized with his bid and really took the time to explain the system and worked with me to satisfy my goals. We used to use approx. $1,200/yr in propane and still use it for cooking and fireplace. 2 years after putting in the geothermal I had to put $175.00 in LP to top off what we used.

Geothermal has really increased the air flow in our home making it much warmer in the winter & cool in the summer. They even came back out and added another vent for my kid’s room later to improve the temp in this room which made a big difference as we no longer need a space heater. I compared 3 different vendors before picking Massmann, and I made the right choice.

Being a doctor, my time is very valuable, and Jason always showed up when he said and completed the job on time. I would recommend Jason and his crew as my family is completely satisfied with his work.

- Dan M – Geothermal install and service, Foley MN

We Made the Right Choice with Massmann

In our previous house we would have $300.00-$400.00 gas bills per month and $100.00 + air conditioning bills per month in the summer.  When we built our new home, I considered different options for heating & cooling.

I was recommended to Massmann Geothermal & Mechanical and decided geothermal was the right choice. Our total bills for heating, cooling and domestic hot water were $634.00 for the first 12 months, that's a little over $50.00 per month on a 4800-square foot home. My only regret is not heating my garage with geothermal as it costs as much to heat it with gas, as the rest of the house with geothermal.

- Jamie Michael – Geothermal install and service, Prior Lake MN

Best Parts and Labor Warranty Offered Geothermal Systems

At the recommendation of our contractor, we had Massmann Geothermal install a complete hydronic (under floor radiant heat) in the entire basement, 2 bathrooms and garage and a forced air Geothermal system throughout the entire home. We are heating and cooling our home (just a tad over 4,000 sq) and our garage of 980 feet.

Our hard cost numbers for heat/cooling from November 2007 to April 2008 has been $538.08. Including domestic hot water, as we also installed a “Super De-Heater" that’s only $89.68 month, compared to our other home of $275.00 a month for natural gas alone. These numbers are right off my electric bills from MVEC.

We keep the home at a comfortable 72 degrees, year-round. In addition to the substantial savings over fossil fuel, I feel Massmann offers one of the best parts/labor warranties in the business. The on-time performance, neatness of the installation, and Massmann's commitment to excellence went well above and beyond my expectations. Yes, we’d do it again without any reservations whatsoever.

- Jim & Bonnie – Geothermal install and service, Jordan MN

Pleasure Doing Business with Massmanns

Clint did show up and do the installation and showed me how to adjust. Thank you so much. He is such a nice, responsible, and intelligent young man. He asks questions to make sure he has what he is working on the way the customer desires. Many of your staff that I worked with have this quality. A good team.

We are very pleased with our investment and are encouraging others to do the same.

It was a pleasure doing business with you.

- Carol B. - Geothermal install and service, Forest Lake MN


Annual Service Maintenance of Geothermal Systems

In 2008 we demolished a 1950’s cabin on Spring Lake (Scott County, just southwest of Minneapolis) and built a new home with a local contractor who was excellent. Our contractor introduced us to Mr. Jason Massmann who brought us up the learning curve on the value and economics of geo-thermal heating and cooling. We concluded that even though the installation cost of geo-thermal heating and cooling was almost twice that of a conventional gas furnace and outside electric air conditioner, that the 5-year payback and longer life of the equipment was worth the additional installation cost. Also, geo-thermal is considerably superior environmentally and uses “off-peak” electricity which is about half the price of “regular” metered residential electricity (from MVEC, Minnesota Valley Electric Company). The footprint of our house is 2,200 sq. feet and total of two levels is 4,400 sq. feet which are important inputs into the sizing of the geo-thermal unit and vertical loops (we had 5 wells drilled).

After several months of analysis, we decided to purchase a GeoComfort GT Unit 5-ton geo-thermal unit with 5 vertical loops (on our ½ acre lot) from and have installed by Massmann Geothermal & Mechanical LLC in Zimmerman, MN.

The installation including well drilling was completed in several weeks and was “on-time” for us to get a Certificate of Occupancy and move into our new home in October 2008. Now after three years of operation (2008 to 2011), we are very pleased with our decision for geo-thermal and for Jason Massmann. He is here for an annual service maintenance ($200) and I am confident that if anything bad happened, he would be here quickly to solve the problem. We recommend Jason Massmann highly and are open to discussing this with any of Jason’s prospective clients.

- D. B. Thorsen – Geothermal install and service, Prior Lake MN


Best Geothermal Systems at Competitive Prices

Massmann Geothermal & Mechanical LLC is not only the leading GeoComfort dealer, but the leading geothermal dealer in the state of Minnesota. Massmann Geothermal has a great reputation for the highest quality workmanship, along with the highest level of customer satisfaction. Jason Massmann prides himself on only doing things the right way. He treats his customers with respect, and provides them with excellent service after the sale.

GeoComfort has recognized Massmann Geothermal over the past 6 years with many awards due to his outstanding performance as a dealer. Jason Massmann and his employees are highly trained in all aspects of geothermal systems from design, to installation, to service. GeoComfort would highly recommend Massmann Geothermal & Mechanical to all customers looking for the best geothermal system at the most competitive price.

- Brian Urlaub, Regional Manager, Enertech, Inc.