Heating and Cooling

Keep your facility comfortable and code-compliant with heating and cooling supplies from Supply Tie. Shop HVAC air filters, registers and vent covers, evaporative cooler parts, heaters and thermostats, dehumidifiers, pipe insulation, and water heater parts. Brands include 3M Filtrete, American Air Filter, Dial Manufacturing, Honeywell, and more. Bulk filter orders are available — stock up for the season and save.

Thermostats: thermostats and heating controls.

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Tru Aire 4 in. H X 10 in. W 1-Way Satin Silver Steel Floor Diffuser

Tru Aire 4 in. H X 10 in. W 1-Way Satin Silver Steel Floor Diffuser

Regular price $16.32 USD

Regular price Sale price $16.32 USD
Unit price per
Tru Aire 4 in. H X 10 in. W 3-Way Powder Coat White Steel Wall/Ceiling Register

Tru Aire 4 in. H X 10 in. W 3-Way Powder Coat White Steel Wall/Ceiling Register

Regular price $11.51 USD

Regular price Sale price $11.51 USD
Unit price per
Tru Aire 4 in. H X 12 in. W 1-Way Matte Black Steel Floor Diffuser

Tru Aire 4 in. H X 12 in. W 1-Way Matte Black Steel Floor Diffuser

Regular price $18.17 USD

Regular price Sale price $18.17 USD
Unit price per
Tru Aire 4 in. H X 12 in. W 1-Way Powder Coat White Steel Return Air Grille

Tru Aire 4 in. H X 12 in. W 1-Way Powder Coat White Steel Return Air Grille

Regular price $6.28 USD

Regular price Sale price $6.28 USD
Unit price per
Tru Aire 4 in. H X 12 in. W 2-Way Powder Coat White Steel Wall/Ceiling Register

Tru Aire 4 in. H X 12 in. W 2-Way Powder Coat White Steel Wall/Ceiling Register

Regular price $12.28 USD

Regular price Sale price $12.28 USD
Unit price per
Tru Aire 4 in. H X 12 in. W 3-Way Powder Coat White Steel Wall/Ceiling Register

Tru Aire 4 in. H X 12 in. W 3-Way Powder Coat White Steel Wall/Ceiling Register

Regular price $12.28 USD

Regular price Sale price $12.28 USD
Unit price per
Tru Aire 4 in. H X 14 in. W 2-Way Powder Coat Brown Steel Floor Register

Tru Aire 4 in. H X 14 in. W 2-Way Powder Coat Brown Steel Floor Register

Regular price $14.57 USD

Regular price Sale price $14.57 USD
Unit price per
Tru Aire 4 in. H X 14 in. W 2-Way Powder Coat White Steel Floor Register

Tru Aire 4 in. H X 14 in. W 2-Way Powder Coat White Steel Floor Register

Regular price $14.57 USD

Regular price Sale price $14.57 USD
Unit price per
Tru Aire 4 in. H X 14 in. W 2-Way Powder Coat White Steel Wall/Ceiling Register

Tru Aire 4 in. H X 14 in. W 2-Way Powder Coat White Steel Wall/Ceiling Register

Regular price $13.67 USD

Regular price Sale price $13.67 USD
Unit price per
Tru Aire 4 in. H X 8 in. W 2-Way Powder Coat White Steel Floor Register

Tru Aire 4 in. H X 8 in. W 2-Way Powder Coat White Steel Floor Register

Regular price $11.02 USD

Regular price Sale price $11.02 USD
Unit price per
Tru Aire 4 in. H X 8 in. W 2-Way Powder Coat White Steel Wall/Ceiling Register

Tru Aire 4 in. H X 8 in. W 2-Way Powder Coat White Steel Wall/Ceiling Register

Regular price $11.05 USD

Regular price Sale price $11.05 USD
Unit price per
Tru Aire 4 in. H X 8 in. W 3-Way Powder Coat White Steel Wall/Ceiling Register

Tru Aire 4 in. H X 8 in. W 3-Way Powder Coat White Steel Wall/Ceiling Register

Regular price $11.05 USD

Regular price Sale price $11.05 USD
Unit price per
Tru Aire 4.5 in. H X 24 in. W 3-Way Powder Coat White Steel Floor Baseboard Diffuser

Tru Aire 4.5 in. H X 24 in. W 3-Way Powder Coat White Steel Floor Baseboard Diffuser

Regular price $38.71 USD

Regular price Sale price $38.71 USD
Unit price per
Tru Aire 6 in. H X 10 in. W 1-Way Powder Coat White Steel Floor Baseboard Register

Tru Aire 6 in. H X 10 in. W 1-Way Powder Coat White Steel Floor Baseboard Register

Regular price $11.06 USD

Regular price Sale price $11.06 USD
Unit price per
Tru Aire 6 in. H X 10 in. W 2-Way Powder Coat Brown Steel Floor Register

Tru Aire 6 in. H X 10 in. W 2-Way Powder Coat Brown Steel Floor Register

Regular price $18.98 USD

Regular price Sale price $18.98 USD
Unit price per
Tru Aire 6 in. H X 10 in. W 2-Way Powder Coat White Steel Floor Baseboard Register

Tru Aire 6 in. H X 10 in. W 2-Way Powder Coat White Steel Floor Baseboard Register

Regular price $23.33 USD

Regular price Sale price $23.33 USD
Unit price per
Tru Aire 6 in. H X 12 in. W 1-Way Powder Coat White Steel Air Return Grille

Tru Aire 6 in. H X 12 in. W 1-Way Powder Coat White Steel Air Return Grille

Regular price $11.66 USD

Regular price Sale price $11.66 USD
Unit price per
Tru Aire 6 in. H X 12 in. W 2-Way Powder Coat Brown Steel Floor Register

Tru Aire 6 in. H X 12 in. W 2-Way Powder Coat Brown Steel Floor Register

Regular price $20.99 USD

Regular price Sale price $20.99 USD
Unit price per
Tru Aire 6 in. H X 14 in. W 1-Way Powder Coat White Steel Floor Baseboard Register

Tru Aire 6 in. H X 14 in. W 1-Way Powder Coat White Steel Floor Baseboard Register

Regular price $11.59 USD

Regular price Sale price $11.59 USD
Unit price per
Tru Aire 6 in. H X 14 in. W 2-Way Powder Coat White Steel Wall/Ceiling Register

Tru Aire 6 in. H X 14 in. W 2-Way Powder Coat White Steel Wall/Ceiling Register

Regular price $15.44 USD

Regular price Sale price $15.44 USD
Unit price per
Tru Aire 6 in. H X 14 in. W 3-Way Powder Coat White Steel Wall/Ceiling Register

Tru Aire 6 in. H X 14 in. W 3-Way Powder Coat White Steel Wall/Ceiling Register

Regular price $15.44 USD

Regular price Sale price $15.44 USD
Unit price per
Tru Aire 6 in. H X 24 in. W 1-Way Powder Coat White Steel Floor Baseboard Register

Tru Aire 6 in. H X 24 in. W 1-Way Powder Coat White Steel Floor Baseboard Register

Regular price $15.46 USD

Regular price Sale price $15.46 USD
Unit price per
Tru Aire 6 in. H X 24 in. W 1-Way Powder Coat White Steel Return Air Grille

Tru Aire 6 in. H X 24 in. W 1-Way Powder Coat White Steel Return Air Grille

Regular price $11.40 USD

Regular price Sale price $11.40 USD
Unit price per
Tru Aire 6 in. H X 30 in. W 1-Way Powder Coat White Steel Baseboard Return Grille

Tru Aire 6 in. H X 30 in. W 1-Way Powder Coat White Steel Baseboard Return Grille

Regular price $17.74 USD

Regular price Sale price $17.74 USD
Unit price per
Tru Aire 6 in. H X 6 in. W Powder Coat Brown Steel Ceiling Damper

Tru Aire 6 in. H X 6 in. W Powder Coat Brown Steel Ceiling Damper

Regular price $9.17 USD

Regular price Sale price $9.17 USD
Unit price per
MSRP $14.99
Tru Aire 6 in. H X 6 in. W Powder Coat White Steel Ceiling Diffuser

Tru Aire 6 in. H X 6 in. W Powder Coat White Steel Ceiling Diffuser

Regular price $10.85 USD

Regular price Sale price $10.85 USD
Unit price per
MSRP $19.99
Tru Aire 6 in. H X 8 in. W 2-Way Powder Coat White Steel Wall/Ceiling Register

Tru Aire 6 in. H X 8 in. W 2-Way Powder Coat White Steel Wall/Ceiling Register

Regular price $12.22 USD

Regular price Sale price $12.22 USD
Unit price per
Tru Aire 8 in. H X 10 in. W 1-Way Powder Coat White Steel Return Air Grille

Tru Aire 8 in. H X 10 in. W 1-Way Powder Coat White Steel Return Air Grille

Regular price $6.95 USD

Regular price Sale price $6.95 USD
Unit price per
Tru Aire 8 in. H X 12 in. W 1-Way Powder Coat White Steel Return Air Grille

Tru Aire 8 in. H X 12 in. W 1-Way Powder Coat White Steel Return Air Grille

Regular price $7.72 USD

Regular price Sale price $7.72 USD
Unit price per
Tru Aire 8 in. H X 12 in. W 2-Way Powder Coat White Steel Wall/Ceiling Register

Tru Aire 8 in. H X 12 in. W 2-Way Powder Coat White Steel Wall/Ceiling Register

Regular price $17.37 USD

Regular price Sale price $17.37 USD
Unit price per
Tru Aire 8 in. H X 14 in. W 1-Way Powder Coat White Steel Return Air Grille

Tru Aire 8 in. H X 14 in. W 1-Way Powder Coat White Steel Return Air Grille

Regular price $8.09 USD

Regular price Sale price $8.09 USD
Unit price per
Tru Aire 8 in. H X 14 in. W 2-Way Powder Coat White Steel Wall/Ceiling Register

Tru Aire 8 in. H X 14 in. W 2-Way Powder Coat White Steel Wall/Ceiling Register

Regular price $18.53 USD

Regular price Sale price $18.53 USD
Unit price per
Tru Aire 8 in. H X 8 in. W 4-Way Powder Coat White Steel Wall/Ceiling Register

Tru Aire 8 in. H X 8 in. W 4-Way Powder Coat White Steel Wall/Ceiling Register

Regular price $14.95 USD

Regular price Sale price $14.95 USD
Unit price per
Tru Aire 8 in. H X 8 in. W Powder Coat Brown Steel Ceiling Damper

Tru Aire 8 in. H X 8 in. W Powder Coat Brown Steel Ceiling Damper

Regular price $8.80 USD

Regular price Sale price $8.80 USD
Unit price per
MSRP $16.99
Tru Aire 8 in. H X 8 in. W Powder Coat White Steel Ceiling Diffuser

Tru Aire 8 in. H X 8 in. W Powder Coat White Steel Ceiling Diffuser

Regular price $18.47 USD

Regular price Sale price $18.47 USD
Unit price per
MSRP $22.99
US Stove Cast Iron Flat Chimney Cleanout Doors

US Stove Cast Iron Flat Chimney Cleanout Doors

Regular price $41.99 USD

Regular price Sale price $41.99 USD
Unit price per