Sterling offers the industry’s most complete line of finned tube heating elements and enclosures and baseboard radiation. Sterling Radiator is a member of the Hydronic Institute of Boiler and Radiator Manufacturers (IBR) and meets the strict industry performance requirements set by the organization. All Sterling finned tube performance ratings are based on IBR testing or are IBR approved, where applicable.


Beauty and Performance
The first thing you see is their sleek lines and smooth satin-white finish but what you don’t see is their performance, you feel it.
Suntemp hydronic baseboards is one of the best…in all categories.
Comfort, Silence, Convenience, Strength, Safety, Cleanliness, Styling, Efficiency & Economy!
Whether Suntemp Imperial or the hi-output Suntemp 800, Suntemp hydronic baseboards add up to one thing: PERFORMANCE.
Custom Heat Control
Suntemp hydronic baseboards come with a finger-tip heat control damper that allows custom control of heat distribution by simply adjusting the damper anywhere along the length of the baseboard.
Looks Great Now, Looks Great Later
The low 7-7/8″ and narrow 2-13/16″ design features a Satin White baked finish. After installation, painting does not hamper operation. The rounded-edge surfaces mean they’re easy to clean for a long-lasting attractive look. For added eye-appeal, even the return tube is concealed.
Easy Installation
No tools are needed for installation. All of the tab type accessories stay where they were put. In addition, both standard and hinged types are available.

Petite 7 and Petite 9

Low Profile, Wall Hugging Baseboards Perform
Like the Big Boys.
Petite 7 and its higher output version, Petite 9, are low profile, smoothly contoured wall hugging baseboards that do it all. Customers enjoy total freedom for placement of furniture and window treatments, while benefiting from performance excellence that ensures long-term satisfaction.

Low-Profile Design
Pre-painted in Classic White, Petite 7 is less than 7″ high; Petite 9 is 9″ high. Both models blend beautifully in any home or apartment, from traditional to contemporary, and offer decorating possibilities every homeowner loves.

Superior Performance
Petite 7 and Petite 9 are more than just beautiful baseboards: the IBR-rated ¾” copper tubing heating element offers precise heating comfort with maximum efficiency. In addition, the full-collared, all-aluminum fins eliminate expansion noise for quiet operation.

Easy Installation
Beginning with the easy-open packages, both Petite models promise effortless installation that contractors appreciate. Panels are completely pre-assembled, and accessories simply snap-on. The exclusive lay-back front panels snap up out of the way after positioning. This reduces risk of damage and allows easy access during and after installation. A wide range of snap-on, die-formed accessories create a smooth, finished look with no screws.

Heatrim American and Heatrim Plus

Heatrim American and Heatrim Plus offer one of the most compact hydronic baseboards on the market. At just over 7″ high and 3″ wide Heatrim American gives any room an open, airy look allowing for decorative flexibility across the occupied space.
Heatrim American offers unparalled efficiency, economy and style and is a very cost effective option for all types of applications.
Symmetrically styled for a modern, low silhouette appearance
Designed for fast, low-cost installation
Engineered for peak hydronic performance.
With a simple, uncluttered look Heatrim America comes with a white semi-gloss prime coat that can be left as is or can be easily painted to match any décor.

Installation Friendly
Installers like the ease of working with this baseboard: No tools needed & No time wasted.
Back panel stands against the wall; all back panels, filler, and joining pieces can be positioned and fastened to the wall by one person
Brackets, dampers, front panels, and accessories quickly snap on
Two high-capacity heating elements are available for installation flexibility.
Available in 2′, 3′, 4′, 5′, 6′, 7′, and 8′ lengths
Shipped assembled in 2′, 3′, 4′, 5′, 6′, 7′, and 8′ lengths, and in 10′ and 12′ enclosures.

HEATRIM PLUS has all the modern characteristics of Heatrim Americanin a hi-output configuration that stands just over 9″ tall and 3.5″ wide.

DesignLine’s Synergy

Meeting Today’s Green Initiatives
In today’s energy-conscious world, replacing an old boiler with a more efficient one is only a start. DesignLine’s Synergy – the new low temperature baseboard – has been specially designed to let state-of-the-art, high-efficiency fully condensing and modulating boilers operate at their full potential, maximizing energy efficiency and providing homeowners with greater cost-savings.
Clean and Green
Hydronic fin-tube design provides clean, uniform heat.
Low temperature capability maximizes boiler system efficiency.
The results are simple: premium performance and more useful energy at less cost. Get more, pay less!
Low Cost Alternative
Low temperature baseboard is also a lower cost alternative to radiant floor, panel radiators, and ceiling applications.
Healthy Hydronic Comfort
Hydronic heating provides the most comfortable and efficient heating method available.
Versatile systems are easily zoned for individual comfort.
Balanced humidity levels are maintained throughout your home.
Best of all, hydronic systems do not use fans that can circulate dust and allergens, so your family’s home environment stays healthy!
Durable, Easy to Operate, Great to Look At.
Heavy-duty design stands up to high traffic.
Made of rugged, 18-gauge steel panels
Attractive white baked enamel finish that blends with any décor
Individual room temperature regulation with manually modulating damper.
Installs as easily as traditional fin-tube radiation.
No special tools, no secret techniques
Simply put…installation is easy!

DesignLine Elegance

Beautiful, Efficient, and Rust-Resistant:
Elegance is designed to last forever.
When it comes to the style of your home, baseboards might be the last things you think of. But when moisture, dents, and dings take their toll, baseboards are the first things that get noticed. Elegance changes everything. 100% extruded aluminum and finished with baked-on enamel paint, Elegance can take every hit that vacuums, furniture, and children throw at it. The sleek, slim design and low silhouette offer a chic, durable style that complements home and office décor alike. Best of all, Elegance performs…and performs.
Resisitant to Rust and Corrosion
Made from 100% extruded aluminum, Elegance baseboards are ideal for high-moisture areas, such as bathrooms and kitchens.
Engineered to Resist Dents and Dings
The sturdy aluminum design, with locking die-cast accessories, helps Elegance stand up to typical “baseboard hazards.” In addition, the baked-on, white enamel paint finish gives it a stylish look that’s guaranteed to last.
Slim, Low Silhouette
Rising only 6-1/2″ off the floor and mounted close to the wall, Elegance maximizes usable space and gives you more flexibility for furniture placement and decorating the way you want.
Prevents Cold Spots or Drafty Areas
Through its clean, quiet operation, Elegance distributes heat evenly throughout the room, creating comfort the whole family will appreciate
Made in the U.S.A.
DesignLine is manufactured by Sterling Hydronics, a division of Mestek, Inc., and is the number one manufacturer of fin-tube radiation in North America. Headquartered in Westfield, Massachusetts, Sterling was established in 1946 and brings to you the most experienced and cost-effective methods of producing high efficiency fin-tube radiation available today.