Will plants be affected if it is too hot or cold?

Yes.If the house temperature is too hot or too cold,the plant may wilt or drop its buds.A plant kept in too cool of conditions may have healthy leaves but fail to flower.The leaves may even turn bronze or unnatural red.Plants in drafty location will experience both leaves and bud falling.An enviroment which is too dry will cause plants to have leaves that are brittle or brown around the edges.