01
Qualified Crews on Every Job
Design Heating estimates, designs, and installs every project with our own trained, licensed crews. No rotating subcontractors. The same people who quote your job are the people who build it.
Duluth, Minnesota
HVAC & Heating Systems
Designed Around You.
Every home is different — and so is every system we build. We take the time to size, design, and install your heating and cooling around how you actually live. No oversized equipment, no guesswork, no shortcuts.
Rapid response for heating failures — Mon–Fri 7:00 AM–5:30 PM. Priority same-week appointments.
10+
Years in Business
4.9★
114 Verified Reviews
CGD
Certified Geothermal Designer
#MB715020
MN Licensed & Bonded
What We Do
Smart Heating Starts with Smart Design
Five ways we keep homes across the Northland comfortable — engineered, installed, and stood behind by Design Heating.
High-Efficiency Boilers
Oil-to-gas upgrades and condensing technology that can cut fuel costs by up to 60%.
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Infloor Radiant Heat
Warm floors in every room. Whisper-quiet, even heat — for new builds and retrofits.
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Panel Radiators
Add a zone, fix a cold room, or update an old system with sleek, modern panel radiators.
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Geothermal Systems
Ground-source heat pumps that can cut your heating costs by 40–70%. CGD-certified design.
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Furnaces & AC
High-efficiency forced-air furnaces and ductless mini-split heat pumps for year-round comfort.
Learn moreWhy Choose Us
Engineered Comfort for Every Home.
Maximum comfort. Minimum energy waste. Every system we build is sized, designed, and installed to deliver both.
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Manual J on Every System
We size every system with computerized ACCA Manual J heat-loss calculations. No guessing. No oversizing. Just the right equipment, properly engineered for your home.
03
Lower Overhead, Better Value
A focused regional company means quality products, professional design, and expert installation — without the corporate markup of national HVAC chains.
What Our Clients Say
4.9 Stars Across 114 Reviews
“We shopped around and felt fortunate when we hired Kevin. Kevin installed a gas boiler, as an addition, to our Geo Thermal heating system. Our experience was totally positive from start to finish. We highly recommend Design Heating, LLC.”
Verified review via Google
“Great to work with. Very professional and knowledgeable on Geothermal. Was able to diagnose and repair unit quickly and do an annual one over on the machine.”
Verified review via Birdeye
“Great service! From first phone call (handled very professionally) to project complete and follow through they did an outstanding job. I highly recommend these folks!”
Verified review via Birdeye
How It Works
How Every Project Works
1
Calculate
Computerized ACCA Manual J heat-loss and heat-gain analysis of your home — room by room, BTU by BTU.
2
Design
Custom system design including piping and duct layouts, LoopCad tubing plans, and electrical schematics — all engineered in-house.
3
Install
The Design Heating team installs your system with quality components, following the engineered design precisely. No shortcuts, no surprises.
4
Commission
Every component tested and tuned — combustion analyzed, refrigerant verified, controls calibrated. Documented for the manufacturer warranty.
Service Area
Proudly Serving the Duluth–Superior Region
Owner-operated and based right here in Duluth, MN. We design and install heating systems across the Twin Ports and the North Shore — same-week appointments whenever possible.
Headquarters
Duluth, MN
Twin Ports
Hermantown, MN
Twin Ports
Proctor, MN
Twin Ports
Pike Lake, MN
Carlton County
Cloquet, MN
Carlton County
Esko, MN
Carlton County
Carlton, MN
North Shore
Two Harbors, MN
Twin Ports
Superior, WI
Service Radius
Within 30 mi of Duluth
Local Affiliations & Credentials
- · BBB Accredited Business — Duluth, MN
- · IGSHPA Accredited Trainer & Installer
- · Certified Geothermal Designer (CGD)
- · ACCA Manual J / S / D Trained
- · Minnesota Licensed & Bonded — License #MB715020
- · Duluth Area Chamber of Commerce region
Community & The Northland
As a small, owner-operated Duluth business, we work alongside local families, builders, and tradespeople across the City of Duluth and the wider Twin Ports. Trusted by neighbors who rely on us before our long, cold winters arrive.
Working with utilities including Minnesota Power and Minnesota Energy Resources for rebate-eligible high-efficiency installations.
FAQ
Common Questions About HVAC in Duluth
A Manual J is the industry-standard method (ACCA) for calculating exactly how much heating and cooling your home needs. It accounts for insulation, window area, orientation, and Duluth-specific climate data. Without it, equipment is often oversized — which wastes energy and reduces comfort. We run Manual J calculations on every project.
Every home is different, so we provide free estimates after a Manual J calculation. High-efficiency gas boilers typically cost about 60% less to operate than fuel oil at current prices. Call us at (218) 525-5914 for a free consultation and accurate pricing.
Geothermal heat pumps use the stable underground temperature (around 50°F in Minnesota) to heat and cool your home. They can reduce heating costs by 40-70%. As a Certified Geothermal Designer (CGD) and IGSHPA accredited installer, Kevin can evaluate whether geothermal makes sense for your property.
Yes. If your home has hydronic heat and no ductwork, we install ductless mini-split heat pumps that provide cooling in summer and supplemental heat in winter. No ductwork needed — just a wall unit inside and a condenser outside.
Timelines vary by project scope. A boiler swap typically takes 1-2 days. A full infloor heating system in new construction could take a week or more. We provide a detailed timeline during the design phase.
We serve Duluth, Minnesota and surrounding areas including Hermantown, Proctor, Pike Lake, Cloquet, Esko, Carlton, Two Harbors, and Superior, Wisconsin. If you are within about 30 miles of Duluth, give us a call.
We do not currently offer emergency or 24/7 service. Our regular hours are Monday through Friday, 7:00 AM to 5:30 PM. For urgent heating issues, we do our best to prioritize same-week appointments.
Your Home Deserves a Properly Designed System
Get a free Manual J calculation and system design consultation.