For the best use of energy and heat, a block heater should be plugged in for no more than 50 minutes. This is because anything over 50 minutes is simply lost to the outside air.
Plug-in wall heaters raise a range of safety concerns and are not considered safe by default. However, they can be made safe to use if certain precautions are taken.
Space heaters that plug in to the wall are a safe and easy to use option for heating a single room; types include convection, ceramic and radiant heaters, each of which are best suited to certain use cases. Additional space heaters are required for multiple rooms.
Some highly rated home heaters are the Vornado Whole Room Heater, the EdenPURE Gen2 Infrared Heater and the Cadet Compak Plus Fan Heater. These heaters are sold by home hardware stores such as Ace Hardware and Lowe's.
As of 2014, the most efficient space heater for home use is the Lasko 6435 Designer Oscillating Ceramic Heater, according to Space Heater Center. It provides 1,500 watts of heat and spreads the heat throughout the room by oscillating it.
Baseboard heaters that are plugged in can be painted only if they come with covers, allowing them to match with any existing wall paint or furniture. Custom covers are also available for baseboard heaters to make them stand out from the wall around them.
As of 2015, The Home Depot offers residential heaters such as the Rheem Performance 40-gallon water heater and portable heaters such as the Lasko 9.2-inch portable heater. Several models of both residential and portable heaters are available at The Home Depot.
Depending on the model of water heater, in mobile homes, it either vents directly to the outside or through the roof. The difference for a mobile home when the heater vents through the roof is the presence of an air intake vent that goes through the bottom of the dwelling.
According to Consumer Search, the Whirlpool N40S61-403 and the Rheem 42VR40-40F are the best gas water heaters for the home. These energy efficient models offer well performing machines for the cost.
As of 2015, highly rated propane heaters for the home include Mr. Heater's F232020 model, Dyna-Glo Delux's RMC-FA40DGD model, and Mr. Heater's MH18B model. These heaters each receive average customer ratings of at least four out of five possible stars based on a large number of customer reviews.