I buy quite a few things at Harbor Freight...but not things I need to rely on working fairly continuously or for a long time. You might be happier and even save money over the long term by buying from a place with a little higher quality. One place to start is Northern Tool.

well , i dont know about a 15,000 wat btu propane heater. i think you need to leave the watt out.

I use a procom blueflame heater with thermostat in mine.And on cold, clowdy, windy days it runs constantly and will use a lot of propane.

also the infared heaters heat the objects before the air, that is whay the blueflame is recommended for greenhouses.

hope that helps

Hi Brandon, both northern tool and harbor freight sell procom heaters, so you deal with procom direct for the warranty. It's 3 year factory warranty and there customer service is the best. I have a small greenhouse13 x 13 I use a barrel burner. Since the ice storm last year ,plenty of wood. But in my 1300 sq ft cabin I use 2 28,000btu blue flame propane heaters. Keeping it around 70 degrees in here at a cost of 20 to 25 gals a week. last cost per gal 1.55 Harbor freight's shipping is a lot less ,plus the floor stand and blower is a lot keeper.