Our mission is simple: to ensure safe and efficient heat pump installations for residential owners.

Just heat pumps. It’s in our name and what we do. We started this company out of passion for the environment, correct design, and improving the HVAC industry as a whole to make sure you have the best heating and cooling system you can get for your home.

a collage of our heat pump installations throughout Denver

heat pump installation in the denver metro area

After a disastrous experience with a failed heat pump and multiple unreliable HVAC services, I decided to take matters into my own hands. Drawing on my background in physics and mechanical expertise, I founded Just Heat Pumps.

– K. Xerxes Steirer, PhD | Founder

Our Core Values

Unwavering Integrity

We lead with honesty, own our actions, and speak the truth even when it’s hard. We earn trust through radical transparency, clear communication, and deep respect for everyone we work with. Integrity isn’t a policy. It’s how we build relationships, make decisions, and support our community. 

Top Quality

We bring precision, pride, and craftsmanship to every install while constantly learning, adapting, and innovating. In a fast-moving field, we stay sharp, solve tough problems, and do hard things well. Excellence isn’t static. We keep moving forward. 

Positive Impact

We make homes healthier, communities stronger, and the air cleaner with every heat pump we install and maintain. We strive to provide equitable prosperity and stability for our team members and staff. Our work is powered by purpose, guided by sustainability, and fueled by optimism. 

Efficiency and Performance

We are lean, smart, and act with intention. Every hour, and system design counts. We optimize for impact, ground in verifiable data, and protect the long-term health of our community, our company and our customers.

Meet The Founders

a picture of Xerxes Steirer hiking with mist in the background
Xerxes Steirer in the lab at School of Mines doing his Professor thing

K. Xerxes Steirer, PhD

Growing up with a passion for science, my background includes proudly receiving a PhD from the Colorado School of Mines and BS at California Polytechnic State University, San Luis Obispo, CA.

I worked for years at the National Renewable Energy Laboratory (NREL) and several research labs in the US and internationally. My work includes clean energy technologies and heat pump improvements. Currently I hold the title of Research Associate Professor in the Physics Department at Mines, and I’m co-Director of the Energy Minor degree program there.

I volunteer as Chair on the Edgewater City Sustainability Board which is tasked with executing the City’s Sustainability Plan.

I love volunteering as a Flag Football Coach and enjoy hiking, snowboarding, and doing yoga when I have the time! My wife Lilly is serving on the Edgewater City Council and is the Executive Director of a non-profit dedicated to fair food for all, Slow Food Denver.

We are raising two great kids who are passionate about health and the environment, with hopes they can grow up helping their communities thrive as well.

“With a focus on innovation and environmental responsibility, we’re leading the way towards a greener future. Join us in our quest to revolutionize home heating and cooling.”

– K. Xerxes Steirer, PhD | Founder

Erin Shine, BPI Certified

Ever since I was a kid I always had a passion for sustainability, but also the concept of the total “win-win” between environmental, finance, social, and business benefits combined.

Growing up in Puerto Rico and Florida, I received a B.S. in Finance with a real estate and law focus from the University of Central Florida. After graduating, I wanted to get started in the solar industry. I packed my car, drove out to Colorado site unseen, and the rest is history.

I’ve been in sustainability and entrepreneurship ever since. From solar design, to building up and selling an Inc. 5000-ranked commercial energy efficient lighting company, to starting a blog about attainable netzero homes, YouTube channel, and renovating two netzero homes myself.

I joined Just Heat Pumps because I’m passionate about helping to continue our climate-focused movement and to support Xerxes in his original vision to drastically improve the HVAC industry in many ways.

I’m BPI Energy Auditor certified to combine with proper heat pump design, and also just became an Electrification Coach with Rewiring America as well. I love to volunteer with Go Electric Colorado to offer heat pump and total home electrification advisory calls as well.

I’ve always been a car guy, and lately enjoying the Tesla Model 3P. I play volleyball with the VOTR leagues, and otherwise love building companies (yes it’s fun), and enjoying all that Colorado has to offer.

Erin Shine profile picture. Me in a black shirt smiling
Erin Shine photo collage of business and travel

Our Services

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Fill out our quick contact form and we’ll be in touch ASAP.

Want to call now instead? Give us a ring at 303-525-4328!

Our HVAC & Energy Certifications

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Pat K profile picture
Pat K
July 10, 2026
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My old furnace was 26 years old. It still worked, but its motherboard was outside of where it was supposed to be. It had been MacGuyvered by the last furnace repairman in 2019, who told me that the warehouse that kept Lennox replacement parts for their older models had been flattened by a tornado, so the older parts were no longer available. Today, I have a heat pump installed. The outside unit is so quiet that I can barely hear it from the back door, about 15 ft away. The installers just left about 30 minutes ago, and the temperature has already dropped 1°F. Plus heat pumps are far more energy efficient than regular furnaces, gas or electric. If you're in Denver metro and are looking for this same change up, may I recommend Just Heat Pumps? The company is owned by someone I used to work with at NREL, so I knew they'd be ethical. Their installers were wonderful at wrangling around my five cats, were on time, and worked hard and professionally over the course of the two-day installation.
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Tomas V
June 22, 2026
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Really great experience with Just Heat Pumps installing a 4-zone heat pump at my townhome. They were great communicators throughout the entire process and completely transparent. This business actually cares about their customers and I can't recommend them enough.
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Bart B profile picture
Bart B
May 28, 2026
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I sensed a high degree of professionalism from the start. Our finished basement can be uncomfortably cool and our garage can get really hot in summer. We did a mini split in both locations. Did try the basement one last night, so effective and quiet. The poured in place pad for the unit outside is impressive. All the people we had contact with were outstanding and all were willing to go out of their way for the customer. Special accolades to our installers Ben/Ryan for an amazing job!
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Cameron D
May 20, 2026
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I'm training for HVAC and I was able to shadow Justin for a day and I was able to learn more that day then weeks on an online course.
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Bob R
April 17, 2026
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Professional, Affordable, Clean, & Organized! From the very first call to the final walk through of our new heat pump-based HVAC system, I received nothing but excellent communication and service from Just Heat Pumps. I saved THOUSANDS - more than TEN GRAND after qualifying for and stacking incentives and rebates to replace our 43 year old system. Just Heat Pumps made it easy by handling most of the paperwork. The installers (Justin and Kevin) were fast and friendly and the electrician (Evan) was so good that we're hoping he can do some other work for us. They took great care to lay down drop cloths and to clean up after themselves. Not one single piece of trash or even dust was left behind. Super easy to work with - I've already recommended Just Heat Pumps to my friends and family, now I'm recommending them to you.
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Anna R profile picture
Anna R
April 14, 2026
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I really enjoyed working with Just Heat Pumps. They are professional, explain everything, and get the job done efficiently and effectively. I’m very happy with the work and help with the great rebates available. Thank you!
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George M profile picture
George M
February 4, 2026
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Tom came by to take some measurements, readings etc to prepare a quote. I was very happy with his work - he is very knowledgeable, friendly and was all round a pleasure to have visit my home. I am looking forward to the quote and would be very comfortable with having him do the work. Update a few months later: I went with JHH for my heat pump, and I am very glad that I did. They did a fantastic job, quoted very competitively, installed a high quality unit, and have been extremely responsive with my questions after the fact. There was a small issue with my electrical circuit (not the unit itself) and the owner came down in the middle of the night at 3f to bring space heaters to keep us comfortable until a fix could be made. I am extremely grateful and would recommend JHH completely.
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JT K profile picture
JT K
January 27, 2026
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Just Heat Pumps was really wonderful to work with as we installed a heat pump in our house to replace a gas furnace and AC. Initially, I took out multiple quotes from other recommended HVAC companies but overall I felt like I wasn't getting the time and attention to my home's issues. I had major temperature differentials between the 1st and 2nd floor and air pressure differences in rooms that compounded the issue. It seemed like other companies didn't really take that seriously. I also got multiple different heat pump size recommendations. So I took about 6 months to research the science and by the end of that I finally found Just Heat Pumps with a very scientific and responsive approach. During the first visit, they really spoke about the system in a way that matched my research. The quote they provided was very straightforward and they did not deviate from that original pricing. The installation process was very professional and the folks kept my house nice and clean, with quality installation of the air handler and ducting. Based off the pressure differentials, the installation team came up with a inventive, yet cost effective duct system that allows air to circulate throughout the rooms upstairs without light and sound transfer (to help my baby). They also worked with an electrician that knew his stuff (Ampro) and he set us up nicely, futureproofing our house. Xerxes and team have visited multiple times since installation to check on performance and are very responsive. Plus their website has lots of helpful info on rebates, etc. Overall, Just Heat Pumps was great to work with. Compared to others, their prices seem slightly higher, but I would say that it is a premium well worth it. With performance, the Fujitsu heat pump did well in the recent cold snap. It was also helping in the tail end of the summer with the hot upstairs. The overall comfort of the house is much improved. It will also help us keep our home more protected from poor air quality on the front range. We used to need to open and close windows a lot to get air flow. I would say that using a heat pump has increased our warming electricity costs but brought down our gas usage significantly. I wouldn't say it is saving us money in the winter, just shifting costs to electricity. Overall, we highly recommend them!
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Greg K profile picture
Greg K
December 9, 2025
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From start to finish we had a great experience with Just Heat Pumps. They helped us navigate the very confusing set of rebates and credits to ensure we maximized our savings. They guided us in performing worthwhile upgrades to our home insulation and sealing to optimize the size of heat pump (again, saving money and energy). They were helpful, professional, great communicators, and really took care of everything along the way. My wife and I appreciated the way they gave us the information we needed without overwhelming us. Their installation staff were dedicated to getting our system installed and configured exactly as we need it and keeping the space cleaned up after them. Our house is more comfortable, we have a smart thermostat, and it's great peace of mind knowing it will last for a long time. The new system takes up less space inside and they located the exterior part in a better location compared to our old A/C unit. In talking to them we heard about their practices for proactive outreach in case any issues come up with the hardware. I'm confident we can rely on their service if a need arises in the future. Our thanks goes out to Xerxes, Erin, and their crew!
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Jill B profile picture
Jill B
November 26, 2025
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I couldn't have been happier with every aspect of working with Just Heat Pumps. When I first decided to get a heat pump, a different company was referred to me, and meeting with them was not great. They didn't give me enough information. I'm so glad I waited and found Just Heat Pumps. They gave me so much more information and communication was always clear and thorough. Erin and Xerxes were both wonderful. And they have followed up with me and been out to make sure everything is perfect. I am very satisfied with my heat pump. I have been through a cold winter with it, but not yet through a summer.
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