Your One-Stop HVAC PartsSupplier
Air grilles, dampers, plenum boxes, spiral ducts, copper line sets, and controls — all from one manufacturer. China factory + Houston, TX facility for fast global delivery.
Complete HVAC Product Range
Six product categories covering every component of your HVAC system. One order, one shipment, one quality standard.
Air Grilles & Diffusers
Supply air grilles, return air grilles, linear bar grilles, ceiling diffusers, slot diffusers, floor registers, and neck adaptors for residential and commercial HVAC systems.
- Aluminium construction
- Removable core design
- White & anodised finishes
Plenums & Air Boxes
Supply air plenums and return air boxes in galvanised steel. Multiple configurations for top, side, and rear connections with various neck sizes.
- Galvanised steel body
- Multiple neck sizes
- Top / Side / Rear entry
Dampers & Zone Controls
Motorised dampers (24V/240V), manual line dampers, non-return dampers, iris dampers, and zone control accessories for HVAC airflow regulation.
- 24V & 240V motorised options
- Manual line dampers
- Non-return dampers
Ventilation & Louvers
Weather proof louvers, exhaust fans, eave vents, ceiling exhaust vents, core vents, and weep holes for residential and commercial ventilation.
- Weather proof louvers
- Exhaust fans (inline & ceiling)
- Eave & soffit vents
Ducts & Metal Fittings
Flexible insulated ducts, semi-rigid ducts, nude ducts, branch take-offs, unit boots, side boots, reducers, Y-pieces, and metal/plastic trunking.
- R0.6 & R1.0 insulated ducts
- Fire-rated nude ducts
- Branch take-offs (BTO)
Copper Pipe & Fittings
Pre-insulated copper pair coils, single coils, hard-drawn tubes, copper elbows, couplers, pipe insulation, and solder sticks for refrigeration and HVAC.
- Pre-insulated pair coils
- R410A rated
- Soft-drawn & hard-drawn
Installation Accessories
Brackets, rubber stands, hanging straps, duct tape, PVC conduit & accessories, aircon trunking, drip trays, waffle pads, and other HVAC installation supplies.
- Wall & roof brackets
- Rubber stands (adjustable)
- Hanging straps
Why Choose Hstube?
We are not just a trading company — we are a manufacturer with 25+ years of in-house production, testing, and global distribution.
One-Stop Supply
Grilles, dampers, ducts, controls — all from one factory. One purchase order, one quality standard, one shipment.
China + USA Dual Base
Manufacturing in Dongyang, China + spiral duct fabrication in Houston, TX. Local delivery speed for US customers.
UL + CE Certified
UL-listed products (one of only 3 in China), plus CE, M1 (France), AWTA (Australia), and ROSH certifications.
25+ Years Expertise
Founded in 2010, with roots back to 1996 in Beijing. Equipment self-developed, production lines self-designed.
Three Continents, One Supplier
Manufacturing in China, fabrication in the USA, distribution in Australia. Wherever you are, we deliver.
China — Dongyang, Zhejiang
60–80 employees, 5,000 m² factory, 6 production lines. All HVAC parts manufacturing, testing, and export.
USA — Houston, TX
4,300 m² facility. Spiral duct and fittings manufactured locally for fast US delivery. "Made in USA" products.
Australia — Sydney, NSW
Local trading company and warehouse. AWTA-certified Airwise Flex brand for Australian building compliance.
Frequently Asked Questions
What HVAC parts do you manufacture?
What is the advantage of one-stop HVAC sourcing?
Do you have a facility in the USA?
What certifications do your products carry?
What is your minimum order quantity?
Ready to Simplify Your HVAC Sourcing?
Send us your parts list and get a consolidated quote within 12 hours. One supplier, one shipment, one invoice.