Mountain High Aviation Oxygen

Mountain High Equipment & Supply Co., trading as Mountain High Aviation Oxygen Systems, makes aviation oxygen equipment at 2244 SE Airport Way, Redmond, Oregon. Founded by pilot and engineer Patrick L. McLaughlin, the company has supplied aviation oxygen equipment since 1985 and says its products are engineered and made in the USA. It is known for the EDS electronic Pulse-Demand oxygen delivery system, introduced in 1992.

Products

• Portable Pulse-Demand systems: the single-place EDS O2D1 and two-place EDS O2D2 kits, now in their 2G versions with rotary switches and brass valves
• Portable constant flow systems, including the XCP range for general aviation and XCR products for sport aviation, plus flowmeters and emergency oxygen
• Built-in oxygen systems: EDS-305x series systems with rigid-mount cylinder brackets in two- and four-place versions, constant flow regulators, cylinder mounting options, fill ports, gauges and manifolds
• Ground support equipment: transfillers and transfill adapters for aircraft fill and tank to tank use
• Cylinders, carry cases, cylinder valves and gauges
• Pressure reducing regulators for CGA-540, DIN-477-9 and SAE-4 connections, inline reducing regulators and two-stage regulators
• Cannulas, including the E-Z Breathe boom cannula, face masks, fittings, hoses and tubing
• Aithre products sold through the online store

Approvals and installation

The home page lists FAA NORSEE approved EDS O2D2 systems for certificated aircraft. The about page states that the company does not claim its equipment is built to an FAA TSO and holds no STC or PMA, and that installing its built-in systems in a type certificated aircraft requires an FAA Form 337 field approval by an A&P mechanic. The approvals page carries letters from AAR, Bombardier and Gulfstream.

Service

Mountain High recommends routine service of portable EDS units and portable regulators every two years, which includes firmware and hardware upgrades and replacement of seals, seats, O-rings and filters, with testing on the company's ATP test set. As of 1 January 2022 the service page lists US$125 for an EDS unit and US$75 for a regulator, plus shipping; rates change; confirm with the company. Service requires an RMA number, and turnaround is quoted at 10 to 14 working days. Legacy EDS D1 and D1-A units can still be serviced while parts last. The site also has manuals, tutorial videos, a cylinder duration chart, a dealer locator and a guide to choosing an oxygen system.

Contact

Description from the company's website (October 2026). Not a Cirrus Aircraft authorized service center. Is this your company? Claim this page to add photos and keep your details up to date.