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We sell premium quality line sets, fittings and covers at unbeatable wholesale prices so you can win more bids, grow your business faster, and make more money. 

Copper Line Set

The best place to buy HVAC line sets, fittings, & covers is GTH Supply.

We Offer Fast & Free Shipping

Free Shipping

Free ground shipping in North America on all orders over $3k.

Free Pick-up

Free Pick-up

Free in-person pick-up at our warehouse in Tukwila, WA.

Free Local Delivery

Free Delivery

Free local delivery within 25 miles of our Tukwila, WA warehouse.

Need Replacement Parts?

GTH Supply now offers reconditioned and used heating and cooling replacement parts from all the major brands. DIY or Pro, we will save you money.

Call today for stock and pricing.

(425) 981-0579

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BEST SELLERS

100% Satisfaction Guaranteed

GIVING BACK

With every product you purchase,

GTH Supply supports local and international charities.

13MM Insulation 4.1 R-Value

13 MM Insulation
4.1 R-value

Fire Resistant. Fire Rating 25/30

Fire Rating 25/50

UV Resistant

UV Resistant

Pressure Rating 2100 to 7000 PSI

Pressure Rating
2100 to 7000 PSI

Working Temp -40F to 250F

Working Temp
-40F° to 250F°

Anti Aging

Anti Aging

CUSTOMERS & SUBSCRIBERS

We  supply smart contractors and businesses
that like saving money.

CUSTOMER SERVICE

(425) 981-0579

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contact@GTHsupply.com

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916 Industry Drive

Tukwila, WA 98188

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© 2023 by GTH supply.

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