I have no experience in this, however A. O Smith claims that there brand of gas water heaters are the most efficient. They also offer a hybrid water heater.
There is no single answer to this question. Water heaters with Energy Star certification are your best bet. However, the important considerations are what you need. If you get the right size, set the right temperature, and insulate your water heater, that will make more difference than the specific brand. The most energy efficient hot water heaters are tankless. Check your local Home Depot or Lowes for pricing and installation information.
Kenmore hot water heaters are highly rated for there reliability,most opion websites also rate them highly.
Lasko space heaters use about 800 Watts and are very energy efficient, along with being very powerful.
Indirect water heaters are one of the most energy efficient, low cost water heaters on the market today. It stores 40 gallons of water for the cost of $0.05 per day.
The most energy efficient pool heaters are solar heaters. You can find solar pool heaters made by Vortex, SunHeater and EcoSun amnong other companies. For non-solar powered you will want to check out pool heaters by Hayward and Pentair.
Vornado is the brand of heater that is the most energy efficient. If used properly, Vornado heaters can heat just as well as a larger heater, for a much lower cost. They are small, portable, and can heat large rooms. Some of them even have thermostats or timers to increas efficiency.
base board heaters,teey are natural draft.keep them on the outside walls
Lasko heaters come with a one year warranty, along with most other heaters on the market.
The average baseboard heaters are designed to help heat your home in the most efficient way possible. Starting at the bottom of the house. This is the best way to make your house warm.
Best radiant space heater. Optimus H-5210 Infrared Quartz Heater ... quartz heater for its silent operation, effective heating, energy efficiency and safety . www.consumersearch.com/space-heaters The most efficient heaters available, according to my research are infared heaters. The brand that pops up the most is Comfort Zone. They heat through infared technology. Not only emitting heat into the air, but also heating walls and furniture to hold heat in. They are both cost effective and efficient.
Tankless water heaters are more energy and cost efficient than your typical water heaters. Of course, each person has their own needs and it is always a good idea to weigh out the pros and cons before making any decisions for a change. What works well for some may not work well for other.
Quartz Heaters are unique in a number of ways. Most notably, the design of these heaters is such that it is more efficient than ordinary heaters. This allows it to deliver more heat for less cost.