Heaters took about an hour to assemble. However, the igniters wouldn't spark the pilots. We eventually got them on. Once up and running and on high, the heat was great. Wish the reservoir for water/sand were bigger so that they could be further weighed down. When the propane tank and the reservoir are filled, wind has little affect and you needn't worry they'll blow over. But, once the tank starts to empty out it needs greater weight to withstand moderate wind - we had one fall over and the reflector bent quite easily.

Pros: good heat; attractive looking; easy to roll around
Cons: about 3 feet of heat in any direction; igniters not consistent; can blow down with moderate wind