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

Book a Discovery Call

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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Theresa M profile picture
Theresa M
October 31, 2026
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Justin was on time, professionlal, and efficient. Just Heat Pumps rocks.
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Keith K profile picture
Keith K
October 26, 2026
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Just Heat Pumps did a great job installing our system. So far the heat pump is working great, our home is comfortable and the installation was very affordable.
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Bob M profile picture
Bob M
October 23, 2026
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The annual maintenance program continues Just Heat Pumps philosophy that they want your system running right. If not it reflects on them. Justin was great, polite, calm, friendly, and informative regardless of how many questions I asked. Also not indication at all that I should be spending more or need something or else. No upselling in sight. I have recommend these guys to several neighbors and will continue to spread the word when I can.
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David B profile picture
David B
October 20, 2026
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Every single person I talked to at JHP listened to me and thoughtfully and thoroughly answered every question and concern I had, especially Tom (sales), Ryan and Ben (installation), Xerxes (head honcho), and Kevin and Tino who poured the concrete slab AND went above and beyond to remove an old unit from my crawl space that I couldn’t figure out how to do on my own. The professionalism exhibited by every member of the team could not have been higher, but the most enduring impression was everyone’s pride in their work and how much they obviously enjoyed being a member of the JHP team. It’s too soon to say how the system they installed will perform, but I have every confidence that should any issues arise, they will be addressed with the same level of care and expertise shown during the installation. A rare and exceptional group of people who take pride in their work while treating you with common human decency. A memorably positive experience all the way around.
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David L profile picture
David L
October 19, 2026
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Efficient, knowledgeable, friendly staff. Great system performance throughout the house through our very hot summer.
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Paulette S profile picture
Paulette S
October 13, 2026
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Our experience with Just Heat Pumps was outstanding. Xerses and Erin, other JHP staff, and their contractors for installation and electrical work were very skilled, professional, and conscientious. It’s just over a year that JHP installed mini split wall and ceiling units in our home. During one of the hottest summers in Colorado history, we stayed super cool. We used the heat feature as a supplement to our hot water heat system in the winter and the house was uniformly warm and comfortable. We also had our annual service inspection, and the system was thoroughly checked and cleaned. Before we chose JHP, we met with several companies to find they were pretty good sales people, but short on technical knowledge and unable to solve a few workarounds that we needed. We chose JHP because they had the tools to right size our units, make helpful suggestions, and genuinely knew the pros and cons of various options. We have been so pleased with Just Heat Pumps and would not hesitate to highly recommend this awesome company.
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Greg M profile picture
Greg M
October 13, 2026
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We got our annual tune up on the system. Everything is in good shape. Kevin was our service technician and he was terrific! He was polite, courteous and friendly. He answered my questions and explained why the fan periodically activates when the system is "Off". This is a great local company with great design and service. They have my wholehearted recommendation for their products and services. Thank you Xerxes, Erin and Kevin - you do a great job.
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Jim S profile picture
Jim S
October 13, 2026
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Complementary maintenance service to clean the outside unit, check out the system, and answer question. Everything is working great and glad to have the Just Heat Pumps team taking care of it all.
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Garrison H profile picture
Garrison H
September 20, 2026
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Just Heat Pumps replaced our furnace with a heat pump and was fantastic to work with through the entire process! They were prompt, professional, transparent, and friendly. Xerxes takes a data driven approach to specifying the best system. The installation team even asked if we wanted to write anything in the concrete pad they poured for mounting the condenser, which our daughters loved!
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Robert G profile picture
Robert G
August 24, 2026
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Working with Just Heat Pumps LLC was a 5-star experience all around. Their depth of knowledge on modern heat pump systems, efficiency ratings, and local Denver incentives set them completely apart from traditional HVAC outfits. The installation was handled on schedule with meticulous attention to detail and clean workmanship. Our home stays perfectly comfortable, and the system is remarkably efficient and quiet. Highly recommend them to anyone making the switch to an all-electric heat pump setup!
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