Instruction: Generate an answer to the question by utilizing the information contained in the document.

Input:
Question: How noisy is this heater
Document: This heater arrived in record time, works well and you can use tap water for the humidifier! The fan is a bit noisy but has a quiet setting that reduces the noise. Worth the price.
I have three brands of these types of heater. I like this unit best for heat plus the purifier and humidifier are a bonus. Only negative is that it is somewhat noisy. Problem would be solved if had wood case, not metal, as do my other brands.
Ive had this xtreme heater for a few weeks now and ever since I got it, we havent ran the oil heat at all. Heats most of the house in no time. Can tell a difference in air quality  from air purifier. I haven't noticed it being noisy at all it very quiet I thought. For the price, it's really a great product.
The other reviews are accurate. This is a good heater and it does the job. I would recommend this heater for the price.
But if you're looking for an actual heater to keep you warm, you're probably better off burning the box for heat.
Vendor was great to work with, but heater was very loud (engine noise). Also, it gave off a strange oder.
It makes a very low sound and looks good. If you are looking for an infrared heater this is the one to buy!! I love it!! !
We are very pleased with the XtremePower 1500W Quartz Infrared Heater. It heats our 30 ft room well. It gets very cozy.
This is a nice heater. When it hits a certain temp (based on personal setting) it shuts off, and turns on when it cools back down again. This definitely keeps the rooms warm.
This heater seems to work very well. I am not sure how well the humidifier works for the air. So far have not noticed the air in the house being any less dry.
Answer: very quiet. small amount of white noise