How many heaters do I need?

Consider 1 heater for every 2 persons for open, outdoor area. If you have a table for 2 you need 1 Horizon heater. If you have outdoor space that accommodates 4 persons - you would need 2 heaters. For closed or covered areas you would need less, 1 heater for 4 persons.

How much electricity does one heater consume?

what If there is -20°C temperature outside?

Are Stellar heaters waterproof?

Why corrosion resistance matters in outdoor heaters?

Who can install my heaters?

Are Stellar heaters any better than gas heaters?

I am buying as a company, do I get VAT?