Residential Hydronic

Wall Panel Radiators


Runtal’s Wall Panel style radiators are ideal for placement under windows or on walls where floor space is at a premium. When placed under windows, wall panels help eliminate cold spots and drafts while allowing curtains to hang to the floor. Runtal Wall Panel radiators are designed to last, crafted from heavy gauge fully welded steel.. Finished with an electrostatically applied power coat paint, your project will look as great years down the road as it does the day you first install it. Our standard Wall Panel line is available in a variety of heights and widths to suit most any heating requirement or design need. For design ideas and tips, please see our Design and Planning section found at the bottom of the page.

standard product in stock

We stock all standard Wall Panels for quick delivery in our most popular color, Runtal White. The other 9 optional colors can be delivered within 2 weeks. Standard Wall Panels are available in two heights (18”, 24”) and four lengths (2’, 3’, 4’ or 6′) . Visit our shop or give us a call. It’s that easy!

 If our standard stocked Wall Panel line or color pallet do not fit your exact requirements, please see our Design Assistance and Custom Products section for Made-To-Order radiators. Our sales/applications experts are ready to help craft a custom solution just for you.

Specialty & Made to Order Radiators

simple to Install

Uniform fittings allow each radiator to be piped eight different ways, with connections located on the side, and bottom of each radiator, and air vents on both sides. Simply select the configuration which best fits your hot water inlet and outlet piping. Continuous Mounting eliminates the need for backing. Simply wall mount (hardware included). All pipe fittings are 1/2” NPT with 1/8” NPT Vent Fittings (Manual Vent Included!). Standard Pipe Covers are also in stock.


Whether it’s a one radiator renovation, or a whole house, Runtal has the solution. Runtal is attractive, durable, healthy, and comfortable. Runtal Wall Panels may be used as a direct replacement for bulky cast iron radiators (see tips on installation), or it may be used with water temperatures as low as 140° F, (making it a perfect radiant alternative or complement to floor heating). Runtal Radiators carry a 5-year warranty.



Runtal’s Wall Panel style radiators are ideal for placement under windows or on walls where floor space is at a premium. When placed under windows, wall panels help eliminate cold spots and drafts, while allowing curtains to hang naturally to the floor. Simply choose the height and length that best suits your design and output requirements. Stocked Wall panels are available for immediate delivery in Runtal White in the following lengths : 2,’  3′,  4′, and 6′. We also offer 9 standard colors which can ship within 10 to 14 days.

Don’t see a size or color to match your needs? Please visit our Design Assistance and Custom Products section for Made-to-Order Wall Panels available in widths from 20″ up to 29 1/2 feet in 2″ increments and an array of over 90  colors and finishes.

UF 6

1430 BTUH/FT

UF 8

1810 BTUH/FT

Model Length Height Depth Heat
UF 6 24″ 18″ 2″ 2860
UF 6 36″ 18″ 2″ 4290
UF 6 48″ 18″ 2″ 5720
UF 6 72″ 18″ 2″ 8580
UF 8 24″ 24″ 2″ 3620
UF 8 36″ 24″ 2″ 5430
UF 8 48″ 24″ 2″ 7240
UF 8 72″ 24″ 2″ 10860


*Outputs shown are figured at 180°F

UF Specifications and Installation Tips (PDF)

Operation & Maintenance

Hydronic Radiator Operation

  1. Radiators are manufactured in the USA of cold rolled low carbon steel and should be used only in closed closed hydronic systems to assure no corrosion of any system components.
  2. Proper radiator operation depends on adequate flow of water to the panel, which can only be accomplished when all the system air has been fully vented from the panels.
  3. Radiators should each be vented, with the system pressurized but in a static state (pumps off). Venting may need to be done periodically to assure a closed system.
    Most radiators are standard pressure construction. Standard pressure radiators should be tested with NO MORE THAN 50 PSI.
  5. Radiator Operating Pressure Ratings:
    Standard Pressure – 56 psi max (Tested at 74 psi)
    High Pressure – 128 psi max (Tested at 184 psi)
  6. Radiators expand a maximum of 0.016 inch per linear foot of length if heated to 215°F. Piping attached to the radiator must provide the necessary expansion compensation.
  7. Flexible piping and elbowed piping are two simple ways to provide the 1/8 inch to 1/2 inch (typical) of flexibility required in expansion situations (usually series piping).
  8. Runtal Radiators require less flow rate than other hydronic heating products. If flow noise is apparent, balance the system until the noise is reduced.
  9. For a delta T of 20°F. (T supply minus T return), divide the total Btu/hr capacity of the loop by 10,000. This gives the Flow Rate in gallons per minute (GPM)
  10. Many levels of control are available today for hydronic systems. Runtal Radiators will provide nice, even heating whether operated by a simple thermostat to baseboard loop system, or an advanced boiler reset controller with motorized mixing valves, constant circulation and 2-pipe distribution.

Radiator Maintenance

  1. Hydronic system maintenance should include routine checks for piping leaks (usually indicated by frequent makeup water), and a yearly diagnosis of the system water pH to evaluate its corrosive potential.
  2. Internal radiator maintenance depends entirely on the system water makeup and proper venting. Hydronic system additives are available to passivate and protect against freezing. These additives will not significantly reduce the output of Runtal Radiators.
  3. External radiator maintenance consists of keeping the surfaces clean, and any paint nicks or deep scratches painted with touch-up to prevent any surface rust.
  4. Radiators can be painted after sanding with fine grit paper to dull the high gloss and by wiping with solvent or a tack rag. Use only oil-based enamel paint (alkyd, acrylic, urethane, epoxy) – do not use latex or lacquer paint. Use urethane or epoxy enamel for radiators located in harsh environments. Spray the paint to achieve an even coating, and let dry completely before heating the radiator.

Design and Color Options

With a vibrant and varied palette, you can choose a shade that will blend into the background or add an eye-catching focal point to your room. Whether you’re decorating a neutral space, or you’re eager to inject character and color, there’s an ideal match for you.

You can choose from a range of standard colors or pay a little extra for a custom shade for your home. For custom color options please visit our Design Assistance and Custom Products Section where our team can help you find the exact match you are looking for.

View Color Options

Design & Planning

Runtal heating products can blend into a traditional décor, highlight an ultra-modern design, or accent any style in between. From baseboard style, to wall panels, to fancy curves and dramatic room dividers, Runtal manufactures the perfect welded steel radiator for every application. Since Runtal manufactures an almost unlimited selection of sizes, colors, and heat outputs. Runtal is truly a designer’s dream. Innovation in architectural detail is no longer held hostage to “old rules” of mechanical heating systems. Imagine the possibilities, confident that the final design will be comfortable and stylish.


Purchase any of our handcrafted stocked Runtal White radiators directly from the factory, for quick delivery, or choose from a variety of 9 standard colors for 2-week delivery.

Design Assistance & Custom Products

Runtal Radiators can be custom designed to fit your exact specifications. Choose from an endless variety of colors, including select metallic finishes. Our experts will assist you with finding the exact size, heat capacity and décor your are looking for.