This is a commonly-asked question. Unlike most energy companies and resellers, Utility Warehouse operates by network marketing, which means its customers are encouraged to sell on the product to their friends and they get commission for it.
This tends to mean it does well on feedback charts, as customers have a vested interest, and many of them are evangelical about the firm. That in itself doesn't make the product bad, but in our view it's no better or worse than any other energy provider.
The main pitch of Utility Warehouse is that you can also get cheap mobile, broadband and home phones with it and that reduces the fee. In general, we find using the cheapest individual providers undercuts this, so always compare with those before signing up to it. See our Cheap Home Phones, Cheap Broadband and Cheap Mobiles guides for more.