http://www.househacker.com/ househacker/tags/heating
Proliphix offers indoor temperature sensors, which can be mounted away from the thermostat so that temperature inside a home or small business can be averaged across multiple rooms to avoid hot or cold spots and wasted energy. With an optional Proliphix outdoor temperature sensor connected to a networked thermostat, the heating/cooling system can be controlled more precisely to efficiently and more comfortably overcome the indoor to outdoor temperature difference. The web browser configuration tool is simple to use and allows users to easily configure heating or cooling programs to maximize comfort and minimize energy use.

Smarthome sells the Proliphix NT20e, which is the same unit but with 2 additional remote temperature sensors, for use in monitoring different zones within your home or even the outdoor temperature.]]> http://www.househacker.com/permanent/Internet-Controllable-Thermostat GelFireplaces.com carries a few really nice flueless fireplaces that are fuelled by a clean burning alcohol gel, resulting in a smoke-free fire.

From the site:

Gel Fireplaces holds three fuel cans, each container burning approximately three hours and, because there is no flue, all the heat is projected into the room. ]]> http://www.househacker.com/permanent/Alcohol-Gel-Fuelled-Flueless-Fireplaces Warmlyyours.com has an underfloor heating (or radiant floor heating, if you like) Flash tool that allows you to draw a room to scale in order to produce a cost estimate to install their underfloor heating product. Underfloor heating seems like a better idea all the time, especially each morning as the cold winter months bring your bathroom ceramic tile temperature down to about absolute zero.

Warmlyyours isn't the only underfloor heating company around, of course. There are plenty, including:

Radiantec

Deviheat, with do it yourself pictures.

Uponor

Watts Radiant (FAQ)]]> http://www.househacker.com/permanent/Radiant-Floor-Heating-Cost-Estimator in-wall fireplaces that look less like fireplaces than art, and Canada's ThermArt is no exception - in fact they make some of the nicest specimens, if you ask us. The company lists five models on their website: the Teardrop (pictured), Quote, Flow, Bouquet and Clarity. Be sure to check out their installation gallery, available for your surfing pleasure.

If you reside in Europe, Safretti produces similarly stunning units.]]> http://www.househacker.com/permanent/More-Gorgeous-In-Wall-Fireplaces-by-ThermArt EcoSmart produces these unique, flueless fireplaces that can be installed essentially anywhere, as they do not require any sort of permanent fixture or fitting. The company makes many different 'shells' that house the actual burner unit which operates using a green fuel. From the site:

The EcoSmart Fire is fuelled by a renewable energy source called Denatured Ethanol. Ethanol is an absolute alcohol, produced by the fermentation of sugars originating from agricultural and forestry products; mainly sugarcane, potatoes, bananas, beetroot and recently from cereals such as wheat.

What are EcoSmart Fires? The EcoSmart Fire is a new, innovative style of open fireplace. It is environmentally friendly, aesthetically appealing, efficient and cost effective. The modular design means it is versatile enough to fit into a wide range of architectural environments. Whether installed in a loft, studio, apartment, terrace house or freestanding home, the EcoSmart Fire provides the 'primal' warmth and comfort of fire while enhancing the contemporary aesthetics of today's living environments. In essence, it is designed to be an inspiring, mobile 'piece of furniture'.

And yes, according to the FAQ, the fireplaces do indeed produce heat (about 13000BTU's worth).]]> http://www.househacker.com/permanent/Beautiful-Environmentally-Friendly-Flueless-Fireplaces-by-EcoSmart site has many videos such as this on a wide range of home renovation subjects. If you are considering laying ceramic tile, you may be interested in underfloor heating. Warmly Yours offers an online flash app to aid you in estimating the cost of an underfloor heating system.]]> http://www.househacker.com/permanent/Great-Video-HowTo-on-Laying-Ceramic-Tile-in-the-Bathroom Firewall Flueless' lack of a heat-liberating chimney like those found in conventional gas fireplaces. There is also an added environmental benefit in that the warm air the unit exhausts is cleaner than the air it takes in! ]]> http://www.househacker.com/permanent/Beautiful-Wall-Mountable-Flueless-Fireplace

Turn your hot water heater down. Most hot water heater's medium setting is fine for most uses. Check your dishwasher manual for minimum recommended temperatures just to be sure.

Consider a hot water heater blanket. Minor debate on the subject here.

Combat heat loss by caulking around doors and windows.

Install compact fluorescent light bulbs.

Change your furnace filter monthly. The less work your furnace has to do to push air throughout the house, the better.

Drop the temperature in your home to 68°F (20°C). Install a programmable thermostat and set it to a lower temperature at night as well as when you are out for longer periods of time.

Run foam insulation on the hot water pipe coming from your hot water heater. Foam insulation sells for pennies per foot.

If you suspect your furnace is due for maintenance, have it done as early in the season as possible. It's better to have the most efficiently running furnace for the entirety of the season to maximize energy savings.

Energy efficient appliances often qualify for government rebates and of course offer the monthly savings of a reduced energy bill.

Check your garage door for gaps and seal around it with weather stripping.

Install foam electrical outlet and light switch seals. This may seem futile, as each outlet only lets a small amount of heat escape, but when you consider the number of outlets and switches in the average home, the aggregate heat loss can be significant.

Turn off electrical devices you are not using. According to this site, a ball park figure you can use in calculating annual costs of electrical devices is one dollar per one watt (i.e. a 60w light bulb, left running year round, would cost around $60 dollars). Obviously not many things run year round, but for some, this rule of thumb would be easier to conceptualize than kw/h numbers. So, a single 150W PC, therefore, would run you about $150/yr.

Add insulation wherever needed - check your attic or between accessible walls.

Open the blinds or drapes as much as possible on sunny winter days - and at night, to keep that heat in the house, close them.

Use clear cling-wrap style window coverings available at most hardware stores. The plastic simply adheres to the window sill with the help of your hair dryer and the provided thin tape, forming an airtight seal.

Don't heat rooms that you don't use. Close off vents and tape them air-tight to prevent wasted heat.

Install reduced flow aerators in your shower. This will cut down on hot water usage.

Check out the DIY network's home energy audit to trace the source of heat loss in your home, without calling in the pros.

Stay warm. ]]> http://www.househacker.com/permanent/Winter-Energy-Saving-Tips-with-DIY-Audit