The UH-1H was an improved UH-1D, with the Lycoming T53-L-13 engine of 1400 shp installed, plus the pitot tube relocated from the nose to the roof, to reduce ground damage to it. "Hotel" models were created by upgrading "Deltas" as well as new production. The first YUH-1H flew in 1966 with deliveries of production models starting in September 1967.
The "Hotel" model Huey was produced in larger numbers than any other model, with 4850 delivered to the US Army alone.The "Hotel" model was widely exported and was also built under licence in Germany, Italy, Japan and Taiwan.
Ten were sold to Canada for use under the designation CUH-1H with the first one was delivered on March 6 1968. These were evaluated by the Canadian Forces and found unsuitable for Canadian tactical use, which resulted in the Canadian government sponsoring the development of the twin-engined version of the "Hotel", the UH-1N Twin Huey. The ten CUH-1Hs were re-equipped for search and rescue use, redesignated CH-118 and served until 1995.
The "Hotel" model Huey was also the basis for a number of sub-variants:
- HH-1H was a UH-1H equipped for base rescue duties. Thirty were delivered to the USAF between 1970-73.
- EH-1H was a UH-1H modified under Project Quick Fix in 1976 and used as communications jamming aircraft with the US Army. Twenty-two aircraft were modified to this configuration beginning in 1976. Initial aircraft were fielded to 82nd Airborne and 2nd Armored. The 82nd fielded the type during invasion of Grenada (Operation Urgent Fury) in 1983.
- EH-1X was an improved EH-1H communications jammer and DF aircraft.
- JUH-1 was a UH-1H equipped with retractable skid gear and an AN/APS 94 radar boom mounted on the belly.
- UH-1V was a MEDEVAC version of the "Hotel", with upgraded avionics.
- TH-1H: Modified UH-1Hs for use as basic helicopter flight trainers by the USAF.
Bell developed a certified version of the UH-1H for the civil market. The aircraft incorporated minor changes for safety, such as dual sliding door locks and a baggage compartment in the tailboom. It was marketed by Bell as the Model 205A and later the improved 205A-1
In 1995 the Lebanese Air Force received in betches two squadrons of UH-1H US helicopters for transport mission but could as well be armed against personnel and armed vehicles.