Call or Text: 503-353-0100
  • Unitary Supplies
  • Ductless Accessories


Professional Quality HVAC Parts and Supplies

Prostock stores, the retail purchasing environment for heating & air conditioning contractors, is well organized with most products on display for easy access. The retail-like feel gives you a convenient way to locally shop and plan for HVAC parts, products and supplies.

May-Hy Distributors adopted the Prostock concept to enhance our offering to local heating and air conditioning contractors. Since opening our Prostock store we have received positive feedback from air conditioning contractors of how they have improved response time to their customers. And heating contractors have been able to stay ahead of the competition from their ability to economically and quickly repair air conditioners, gas furnaces and other HVAC equipment.

Prostock will enhance the Network Program later this year. The expanded version has capability to offset the effects of price fluctuations due to fuel costs. This is one example of the benefit of the Prostock program.

Prostock replacement parts department is committed to improving the business of our HVAC contractors by providing quality services, products and supplies that earn customer trust and build lifetime customer satisfaction. We value our contractors and will continue to demonstrate respect with integrity and positive energy.  Visit the Prostock store online. Contact us for your password for full access.

Our team at Mar-Hy Distributors would like to graciously thank you for your business.

Jeff Schmidt, Owner

Prostock, Where the Pros Shop



  • Some of the cities we serve


  • Blue Hawk
  • NFIB
  • PHCC
  • OHBA
  • BBB

Mar-Hy Distributors 
Air Conditioning and Heating
3850 SE International Way, 
Milwaukie, Oregon 97222

Telephone: 503.353.0100
Text: 503.353.0100
Parts Orders Fax: 503.652.1330
Equipment Orders Fax: 503.652.4041
Main Office Fax: 503.353.0900