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Claim This BusinessESI Heating and Cooling has maintained a presence in Portland, Michigan for nearly three decades, earning a spotless 5.0-star rating across 47 client reviews. The company operates around the clock, every day of the week, and responds to service calls throughout the greater Portland area including Dewitt, Grand Ledge and the surrounding Greater Lansing communities. Nick, the company owner, remains actively involved in both dispatch operations and on-site installations, keeping the business rooted in hands-on expertise rather than distant management.
What distinguishes ESI from neighboring contractors is their deep specialization in geothermal heat pump systems, a technology that remains relatively rare among residential HVAC providers in MidMichigan. They carry WaterFurnace geothermal units and maintain expertise integrating these systems with smart thermostats, a pairing that several reviewers specifically mention during their installations. The company also offers PuriFi Labs indoor air quality solutions and maintains dealer relationships with Amana for traditional heating and cooling equipment, giving homeowners options across multiple price points and efficiency levels when it's time for a replacement.
Reviewers consistently cite specific team members by name. Dan Gunter described a full geothermal replacement where Nick and the crew left his basement cleaner than they found it, then spent significant time configuring his existing smart thermostat to work with the new system. Vicki Williamson noted that ESI handles both her personal home and business properties, with Nick personally visiting each location to explain equipment options before any work begins. Theresa Getchell's review named technicians Aaron and Sean Rutka for performing what she described as a thorough analysis across her two separate heating systems.
All 47 client reviews award a perfect 5-star rating. Six of those reviews explicitly name individual technicians, with Nick, Aaron, Sean, Terry and Justin mentioned most frequently for both residential repairs and geothermal installations.
| Sunday | Open 24 hours |
| Monday | Open 24 hours |
| Tuesday | Open 24 hours |
| Wednesday | Open 24 hours |
| ThursdayToday | Open 24 hours |
| Friday | Open 24 hours |
| Saturday | Open 24 hours |
Diagnostic services and tune-ups for gas furnaces, including new furnace installations for homes needing replacements.
Full ground-source system design, removal of old units, and installation of new WaterFurnace geothermal systems.
AC repair, maintenance, and new cooling system installation for residential properties throughout their service area.
PuriFi Labs systems and other air purification products to improve home air quality year-round.
Specialized repair and installation of water heater systems designed to heat floors through embedded tubing.
Installation of ductless heating and cooling for homes without existing ductwork or for zone-specific climate control.
Boiler repairs and multi-zone heating controls to manage different temperatures across separate areas of a home.
HVAC services for light commercial properties including maintenance contracts and system replacements.