When units turn in ESVs for overhaul, they need to include the space heater. If they don't, the space heater won't be replaced. Here’s more info what happens next...

The A20 personnel heater doesn’t need scheduled maintenance to work properly. But regularly inspecting the heater will improve its life and performance. Here’s how to make sure the A20 heater does its job of keeping Soldiers...

Need a circuit breaker for an H-140, Improved Army Space Heater (IASH), NSN 4520-01-477-0568? It’s shown as Item 14 in Fig 11 of TM 9-4520-271-24P (Feb 06). But the wrong part number, IAP-11-1-60-1.00-01, is listed in the TM...

When icy winds are bearing down, the family of space heaters (FOSH) may be all that stands between you and Old Man Winter. Question is, can the FOSH depend on you to keep them operating?...

Crewmen, your combat vehicle’s A20 personnel heater, NSN 2540-01-396-2826, will keep you warm when the temps drop. But neglect the proper start-up procedures and your heater will give you the big chill!        ...

Dear Editor, as a Power Generation/Environmental Systems LAR, I’m often asked to assist with systems maintained by the 1D, 91C and 91J MOSs (ground support maintainers). Although most fuel-burning heaters are  maintained by...