For Suppliers
Who We Are
ONSONSPA is a factory-direct brand bringing premium bath, hot tub, sauna and wellness products to American homes. We are based in Bellevue, Washington, and we work with a focused network of manufacturing partners who share our commitment to quality, honest pricing and dependable delivery.
Our product lines span bathroom fixtures, whirlpool and air bathtubs, indoor and outdoor saunas, swim spas, cold plunge tubs and outdoor wellness equipment. Every product we sell is built to help our customers bring spa-quality relaxation home — and that starts with the partners who make it.
Who We Work With
We are always looking for reliable suppliers of components, materials and finished goods across our product lines. This includes:
- Bathroom fixtures and fittings — faucets, shower systems, vanities and mirrors
- Bathtub and spa components — pumps, jets, heaters, control systems and shells
- Sauna and wellness equipment — heaters, infrared panels, cabin kits and accessories
- Outdoor wellness products — covers, water-care systems and accessories
- Packaging and logistics partners who can support our U.S. fulfillment
What We Look For
We value long-term relationships with partners who share our standards. When we evaluate a supplier, we look for:
- Consistent quality — materials and workmanship that meet our standards, batch after batch
- Competitive pricing — factory-direct economics that let us keep prices honest for our customers
- Reliable lead times — on-time production and shipping we can count on
- Responsible practices — safe working conditions and responsible sourcing across your supply chain
Our Standards
We expect our partners to comply with all applicable labor, employment, health, safety and environmental laws in the countries where products are manufactured. We care about the people who make and handle the goods we sell, and we expect the same from our suppliers.
We also care about the environment. Sustainability begins with ethical sourcing — choosing materials and partners that minimize negative impact on climate change. We encourage all suppliers to review our standards and ensure alignment with our social and environmental expectations.
How We Work Together
If we are interested in your products, here is how the process typically works:
- We contact you by email to discuss your product range and capabilities
- We ask for samples to evaluate quality and fit
- Our quality team may visit your factory to verify production standards
- We agree on pricing, lead times and packaging, then begin production
Contact Us
If you believe your products or capabilities fit our needs, we would love to hear from you. Please introduce your company, your product range and your minimum order quantities.
Email our purchasing team at purchasing@onsonspa.com. We review every inquiry and will respond within 5 business days.


