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Claim This BusinessDesign Heating, LLC operates as a residential and light commercial HVAC contractor serving Duluth and the surrounding northeastern Minnesota region. The company has built a solid reputation over its years of operation, earning a 4.9-star rating across 106 customer reviews, a remarkable feat that places it among the highest-rated contractors in the area. Known for taking on clients that other companies decline, Design Heating steppe in to service residential heating needs when a former provider shifted exclusively to commercial work, demonstrating a willingness to fill gaps in local coverage that many competitors walk away from.
What distinguishes Design Heating from many regional contractors is their hands-on expertise with specialized heating systems that other local companies often refuse to service. Their team maintains demonstrable proficiency with Triangle Tube boilers, geothermal heat pump installations, and mini-split systems, equipment categories that require specific training and manufacturer certification. Reviewers consistently note their technical competence with geothermal technology, including annual maintenance and diagnostic repairs, suggesting depth of experience in an area where many Duluth-area contractors lack demonstrated capability.
Customer experiences reveal a team that values respect for the homes they enter, with one reviewer specifically noting Kevin's conscientious approach of removing shoes when working inside. Jonathan Wolfe's 2023 project involved a complete geothermal system design with integrated domestic hot water heating, managed from initial consultation through excavation coordination with outside subcontractors. Levi Shrake's review describes a same-day diagnostic visit for a geothermal unit, highlighting responsiveness for troubleshooting scenarios rather than only new installations.
105 of 106 reviews award 5 stars, with customer language emphasizing reliability, technical skill, and professional conduct. The single 1-star rating stems from a scheduling communication issue around infrared heating rather than technical ability. Positive reviewers repeatedly mention Triangle Tube boiler expertise and geothermal systems as areas of demonstrable strength.
| Sunday | Closed |
| Monday | 7 AM–7 PM |
| Tuesday | 7 AM–7 PM |
| Wednesday | 7 AM–7 PM |
| ThursdayToday | 7 AM–7 PM |
| Friday | 7 AM–7 PM |
| Saturday | Closed |
Complete ground-source heating and cooling system design and installation including integrated domestic hot water heating.
Annual servicing, diagnostics, and troubleshooting for existing geothermal heat pump systems.
Maintenance and repair for Triangle Tube and other residential boiler systems.
Diagnostic and repair services for ductless mini-split heating and cooling systems.
Old system removal and new heating and cooling system installation for residential properties.