Modern, low-profile design
Flat steel or aluminum panels mount flush against the wall in white, anthracite, and custom colors. Towel-warmer styles double as a heated towel rack in bathrooms.
Service 03
Panel Radiators & Hydronic Retrofits
Flat panel radiators are the quiet luxury of modern hydronic heat — slim, sleek, and dramatically more effective than the cast-iron radiators of a century ago. Design Heating retrofits panel radiators into existing boiler systems throughout the Duluth area, adding heat to additions, bonus rooms, and chronically cold spaces.
Overview
Custom-Designed for Duluth Homes
If your home already has hydronic heat and you want to add comfort to a new room, an addition, or a cold zone, flat panel radiators are an elegant solution. We can also add zones (separate thermostats) to your existing boiler system so every area of your home is individually controlled.
- Zone additions to existing boiler systems
- Flat panel radiators and towel warmers
- Solid European-quality construction
- Clean, modern look that fits any interior
Why Choose This System
Engineered Benefits, Not Sales Pitches
Independent room control
Each radiator can have its own thermostat, so you set bedroom temperature separately from the living room without re-piping the entire house.
Faster response than radiant floors
Panel radiators heat up in minutes — perfect for guest rooms, additions, and bathrooms that you only want warm part of the day.
European-quality construction
We install radiators from Runtal, Myson, and Buderus — manufacturers with 50+ year track records and 10-year warranties.
Our Process
How a Panel Radiators Project Works
Every job follows the same documented workflow — from heat-loss calculation to final commissioning.
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1. Site visit
We measure each space and inspect your existing boiler, piping, and zone capacity.
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2. Sizing
A room-by-room heat-loss calculation determines the BTU output each radiator needs.
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3. Pipe routing
We route PEX or copper supply and return lines from your existing manifold or near-boiler piping.
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4. Install + balance
Radiators are mounted, connected, bled, and balanced. Each thermostatic valve is set for optimal comfort.
Credentials
Owner-Installed, Owner-Accountable
Kevin Kaski personally designs and installs every Design Heating project — no sub-contractors, no rotating crews.
License
MN MB715020
Minnesota Licensed & Bonded
Geothermal
CGD Certified
IGSHPA Accredited Trainer & Installer
Engineering
Manual J + LoopCad
Every system sized by calculation, not guess
Reputation
4.9 ★ · 114 reviews
BBB Accredited · Founded 2016
Service Area
Where We Install Panel Radiators
Design Heating is based in Duluth, Minnesota and serves homeowners throughout Northeastern Minnesota and Northwestern Wisconsin — typically within a 30-mile radius of our shop on Washburn Road.
Design Heating, LLC5131 Washburn Road
Duluth, MN 55803
(218) 525-5914
- Duluth, MN
- Hermantown, MN
- Proctor, MN
- Pike Lake, MN
- Cloquet, MN
- Esko, MN
- Carlton, MN
- Two Harbors, MN
- Superior, WI
Frequently Asked Questions
Panel Radiators — Common Questions
A single panel radiator installed in a room near an existing boiler system typically runs $1,200–$2,800, including the radiator, valves, piping, and labor. Whole-house multi-zone retrofits are quoted after a site visit.
In most cases, yes. Modern panel radiators operate efficiently at lower water temperatures, which is ideal for condensing boilers and heat pumps. If your existing boiler is older, we will verify capacity during the design phase.
Yes. Modern panel radiators have more surface area per linear foot than fin-tube baseboard and respond to thermostat changes much faster than cast iron, so the boiler runs less and you waste less energy maintaining heat in unused rooms.
Absolutely. Hydronic towel warmers tie directly into your boiler system and provide both space heat and warm towels. They are one of our most popular bathroom upgrades.
Most retrofits are completed in 1–2 days per zone. We route piping through closets, basements, and unfinished spaces wherever possible to minimize wall disruption.
Surface temperatures are typically 110–140°F during peak heating — warm to the touch but well below the burn threshold for brief contact. Towel-warmer surfaces are even cooler.
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Ready to Get Started?
Free in-home consultation, Manual J heat-loss calculation, and a written, itemized quote — every time.