• Geothermal Classroom Ventilation Units

• ERV Equipped Classroom Ventilation Units

• 2 Pipe, 4 Pipe, or DX Classroom Ventilation Units

• Powered Exhaust

• Multiple Control Strategies

• 2 Pipe, 4 Pipe, or DX Ductless Cassette Units

• Residential and Light Commercial Applications
   (2 - 8 Zones)

• Retrofit and New Construction

• Zonocity High Velocity Zoning Systems

• Round, Rectangular, Regi Dampers & Custom Insertable Dampers

• Venting Products, B-Vent, Flexible Vent

• Chimney Vent

• Grilles, Registers, Diffusers

• Stamped Steel Registers and Grilles

• Single and Double Deflection

• Multi-Louver Dampers

• Stationary Bar Grilles

• Curved Blade

• Return Air Exhaust

• Perforated Diffusers

• Supply and Return

• Stepdown Louver Diffuser

• Plaque Diffuser

• Spiral Pipe Diffuser

• Slots

• Access Doors

• Flexible Duct

• Cut Lengths

• Register Boxes

• Tee Bar Diffusers

• Collars and Connectors

• Gas-Fired Unit Heaters

• Duct Furnaces

• Oil-Fired Unit Heaters

• Hydronic Heating Equipment

  • Hot Water Unit Heaters

  • Cabinet Unit Heaters

  • Convectors

  • Finned Tube

• Condensate Pumps

• OEM Pump Products

• Water Gardening Products

• Curbs

  • Adjustable Pitch

  • Adaptor

  • Standard/Custom Roof

  • Metal Building

  • Side Discharge

  • Filter and Isolation

• Energy Recovery Units

• Economizers

• Burglar Bars

• Mixing Boxes (Standard and Custom)

• Outside Air Intakes (Manual and Motorized)

• Ductless Min-Split Systems

  • Single and Multiple Zone

  • Cooling Only and Heat Pump

  • Wall, Ceiling, Floor and Cassette Evaporators

  • Electric, Chill Water and Hot Water Options

  • In-Wall Condensing Unit - Cooling Only and Heat Pump

NATIONAL COIL COMPANY

• High efficiency wall mount air conditioners and heat pumps

• Cased, uncased, and mobile home coils;
  1.5 - 5 tons

• Commercial cased coils, 5 - 20 tons

• Polymer equipment pads

• Light and easy to use

• Stackable design allows installers to save space and carry more stock

• Improved rigidity, strength, and ground support

• Up to 25% more surface area than other pads on the market

• Support channels offer superior strength and ground contact

• Specifically engineered for condenser pad installations

• Geothermal technology

  • Energy-efficient, cost effective, environmentally clean

• Units designed to provide forced air heating and cooling with humidity control for comfort throughout the year

• Combination unit available to provide forced air heating and cooling as well as hydronic heating all in one convenient package

• Water to water, or reversible water to water, units that provide heated or chilled water for residential as well as commercial applications. Typical uses include in floor heating, domestic hot water, snow/ice melt, fan coil as well as pool/spas.

• UL 181 certified products

• Most complete line in HVAC market

• Water, smoke, and mold resistant products

• Moisture barrier products

• All weather use

• Residential copper line sets

• 3-, 4-, 5-, and 10-ton Chillers

• 5-ton Heat Pump Chillers

• (1-5)-ton, 2-pipe, 4-pipe + DX, Ducted and Ductless Fan Coils with Optional Electric Heat

• Duct Wrap

• Pipe Wrap

• Crawl Space

• Attic Insulation

• Advanced static plate exchanger

  • Positive air stream separation

• ERV not HRV (transfers humidity)

• Residential and light commercial units are HVI-certified

• Commercial units are ARI-certified

• Simple maintenance

• Replacement PTAC and PTHP's

  • Hotels/Motels

  • Nursing Homes

  • Schools

  • Offices

• Corner Concealed Vertical Units - VertiPack

• Console Water Source Heat Pumps

• Gas-Fired Unit Heaters

  • Clamshell and Tubular Design

  • Propeller Type

  • Blower Type

• Duct Furnaces

• Oil Fired Unit Heaters

• Cabinet Blowers

• Low and High Intensity Infrared Heaters

• Outdoor Duct Furnaces

• Air Handlers

• Engineered Make-Up Air Units

  • Direct Fired up to 14,000,000 Btu

  • Indirect Fired up to 6,000,000 Btu

  • DX or CW Cooling up to 180 tons

• Air Rotation Units

• Industrial Make Up Air Units

          Go to Sterling Sales Assistant to check on orders.

• Flashlights

  • Xenon Bulb

  • LED

  • Battery-powered

  • Rechargable Battery-powered

• Headlamps

• Low and high intensity radiant heaters

• Premier vacuum series infrared heating system

• Residential garage heaters

• Patio heaters

• Electric Strip Heat

  • New and Replacement Heat Kits for All Unitary OEM's

• Electric Duct Heaters