# Design Heating LLC Design Heating LLC is listed as a heat pump installer in Duluth, MN, United States. Design Heating LLC appears on the Focus on Energy register (Trade Ally contractor), with an address in Duluth, MN. Services named in the source: HVAC. ## Details - Address: 5131 WASHBURN RD, Duluth, MN, 55803-9787, United States - Phone: [12184285914]() - Website: [www.designheating.net]() - Register or agency named in the source: Focus on Energy - Source of the listing data: Focus on Energy (Wisconsin utilities / PSC), https://focusonenergy.com/trade-allies?searchType=home&distance=all&serviceType=residential-hvac, fetched 2026-11-10. Map pin from Overture Maps Places (CDLA-Permissive-2.0, release 2026-10-21.0). ## Questions ### Where is Design Heating LLC? Design Heating LLC is at 5131 WASHBURN RD, Duluth, MN, 55803-9787, United States. ### How do I contact Design Heating LLC? To contact Design Heating LLC, call 12184285914 or visit https://www.designheating.net. ## Source From [Public program registers and member directories](https://focusonenergy.com/trade-allies?searchType=home&distance=all&serviceType=residential-hvac), license No reuse licence stated by the seven registers, checked 2026-11-11. Last updated November 11, 2026. ## Links - This heat pump installer on the [web page]() - [Air-source heat pumps in Duluth]() - [More heat pump installers in Duluth]()