Best Ways to Heat a Basement

When finishing your basement, you may have lots of things on your mind. Heating is often relegated to an afterthought. Yet even the warmest basements run up to 15 degrees cooler than grade-level floors. This is just the nature of below-grade living. 

Couple that with the fact that your basement may not have originally been built with living in mind. Basements can effectively be heated to keep you toasty and warm, and usually through a combination of methods.

Extended HVAC System

Working off of the existing heating system and extending it into the finished basement ties the house together, increases home value, and works more efficiently than spot-heating options like baseboard heaters.

If there is a basement, the ductwork might be visible and accessible from there. Consult an HVAC professional to calculate the heating load and the size and configuration of the ductwork.

If you are installing a new furnace for your home with no current intention of finishing the basement, you may want to choose a more powerful model than is needed for the existing space.

Radiant Floor Heating

Radiant floor heating stands out from other forms of basement heating because the heat source is completely invisible.

Baseboard heaters take up valuable wall space, HVAC has a return and registers, and space heaters and pellet stoves take up floor space. But radiant floor heating remains invisible, its electric heating cables or water-filled tubes (for hydronic systems) tucked away underneath the basement's floor covering.

The cables or tubes form dense loops under the flooring, ensuring that the floor is evenly heated. It also makes sense to start the heat at the floor since heat rises from the floor and rises to the ceiling.

However, the entire floor covering must be removed and then replaced to install radiant floor heating. That's why it makes more sense to add radiant floor heating during a major basement remodel that always includes new flooring.

Owners of basements starved for ceiling height may notice the one-inch elevation that comes with installing radiant floor heating. Also, it will not heat up a basement quickly. Instead, it's a slow, steady heat that's meant to remain running constantly during cold periods.

Hardwired Baseboard Heaters

For many homeowners, the best heating solution for the basement is a convection or hydronic electric baseboard heater hardwired into a home electrical system.

Electric baseboard heaters are long and quite prominent metal units that, as the name suggests, run along the baseboard of your walls. Baseboard heaters do not need to run the entire length of the wall, just in certain places.

As with extending your HVAC, baseboard heating requires planning for how much heat you need for a given room. At the least, you will need one baseboard heater per room, as the heat from baseboard heaters does not easily travel from room to room.

Many homeowners who choose the option of electric baseboard heaters do so with the understanding that the basement is a basement, and it does not play by the same rules of aesthetics as the upstairs area. So, even though baseboard heaters may not be acceptable upstairs from the standpoint of physical beauty, they are perfectly acceptable in the basement.

Installing electric baseboard heaters is not as simple as screwing them into the baseboard and plugging them into an ordinary outlet. The larger, 96-inch models draw enough power that they require a 20 amp, 240 V circuit. Consult an electrician ahead of time. All of these heaters will need to be hard-wired into the supply circuits, rather than being plugged into the wall receptacles.

Baseboard heaters allow you to sequester the heat into just the areas where you need the heat. These heaters can be individually controlled with separate thermostats or even completely turned on or off, as needed.

Wood Pellet Stove

Wood pellet stoves burn wood pellets and push out warm air with a small fan.

An alternative and greener option to using a wood-burning stove is to install a wood pellet stove. These heating sources rely on manufactured pellets as an energy source and burn clean.

Recycled pellets burn at a slow rate of combustion and, fortunately, require only a 110 V plug-in outlet to run the motor that circulates hot air.

Unlike baseboard heaters, pellet stoves are not entirely basement-internal. Because these stoves produce carbon monoxide, you will need to vent directly to the outside.

From a style perspective, wood pellet stoves may not fit in with many contemporary or modern home designs. Even the most basic models of wood pellet stoves impart a classic or traditional look.

Electric Space Heaters

Space heaters are familiar to anyone who has lived in a cold apartment or dorm room. Cheap to purchase (nearly all cost less than $100), they plug directly into an ordinary household outlet and start blowing heat right away. There's no need to wait for HVAC technicians or electricians to do their work.

Fan-driven convection heaters are the least expensive and also the least efficient. Large, flat, micathermic heaters install on the wall like a flat-screen TV and slowly heat the room. Portable radiators roll into the room; their oil-filled cores retain heat even after the heating element has turned off.

Combination of Heat Sources

What if your HVAC system cannot supply enough heat to the entire house? It is possible to make do with temporary measures such as shutting off the upstairs registers by hand if you plan to be down in the basement for a while.

You may just have a trickle of heat coming through the downstairs basement registers. Do not discount the value of this low-volume heat. It is possible to run the furnace long enough to take the chill off of the basement room, using the energy drawn from the electric baseboard heaters. By having the HVAC work in combination with the baseboard heaters, you should be able to supply enough heat for your basement.

Simply providing enough wall insulation, adequate subfloor, and underlayment may be enough to tip the balance of any HVAC system that is putting out some, but not enough, heat for the basement area.