Gas Heater Efficiency Comparison - Energy Star Ratings - Gas Energy Rating: Gas Heaters & Fireplaces
The gas energy rating of gas appliances is signified using a star rating scheme. However, the energy efficiency can be affected installation location, usage, climate, ambient air and water temperature, humidity, number of sunny days, insulation, windows and other factors.
It basically compares gas heater efficiency or wall furnace efficiency by the amount of raw energy input consumed by the gas heater in comparison to the heat energy output provided.
When doing a gas heater efficiency comparison, Star Ratings for unflued gas heaters are from 5.8 to 5.9 Stars, meaning that they have about 90% gas heater efficiency. Flued heater have 1.0 to 4.8 Stars and 61% to 84% gas heater efficiency. So, you could save as much as 32% of the cost of heating by choosing unflued gas heaters compared with some flued gas heaters.
For a gas heater efficiency (gas energy rating) comparison, including gas fireplace and wall furnace efficiency, we rely on Star Ratings. Initially the energy efficiency labeling scheme for gas heaters, both flued and portable gas heaters, was started as an industry gas energy rating program, run by the Australia Gas Association (AGA).
Star ratings provide a relative gas heater efficiency comparison based on tested and labeling, a gas energy rating which is required for all gas heating units, including wall furnace efficiency. Understanding Star Ratings, and the gas heater efficiency comparison behind them, can save you lots of money…
Flued Gas Heaters vs Unflued Gas Heaters - Flued Gas Heaters vs Portable Gas Heaters
Unflued gas heaters have no flue and discharge the combustion gases and water vapour directly into the home. Most unflued gas heaters have a hose and bayonet fitting so it can be moved from room to room, plugged into bayonet sockets.
Unflued gas heaters have higher energy star ratings but they do vent some combustion gases inside the home. The gas levels released are specified by government safety regulations.
Flued gas heaters for the home have a flue that conveys all combustion gases and water vapour outside of your home, for cleaner indoor air. Balanced flue models draw the combustion air from outside your home, so the amount of air drawn in is balanced with the exhaust gas that goes out the flue.
Flued gas heaters burn gas to generate heat and use a flue to carry the exhaust gases away. You can get either flued gas space heaters or flued gas fireplaces. There are both natural gas and LPG flued gas heaters.
Unflued gas heaters are more energy efficient and cost less to purchase and install than flued gas heaters. (see flue diagrams above)
Gas heaters are normally safe but an unsafe heater could be a fire hazard or produce dangerous carbon monoxide. Having you gas fitter service your gas heater at least every two years will help to keep you and your family safe. Any gas heater identified as being dangerous is typically subject to a recall.
Indoor gas heaters, like Rinnai gas heaters, are a great way to heat your home.
Enjoy the safe use of your gas heater by following these simple gas heater safety tips…
LPG Freezing Point: Propane Tank Regulator Freezing - LP Gas Regulator Freezing
LPG (propane) freezing point is -188 °C (-306.4°F). This would only ever occur under laboratory conditions. There is no place on the planet where temperatures this low occur in nature.
LPG-propane does not freeze in winter.
LPG-propane BOILS at -42°C (-43.6°F), which means that liquid propane does not vaporise - turn to gas - below that temperature. So, unless you live in Antarctica, you should have no problem.
The causes propane tank frost and propane regulator freezing are the same. Under the right circumstances, condensation, ice or frost can form on a propane tank (LPG gas bottles) and a propane regulator freezing but the LPG gas does not freeze.
Does LPG Gas Freeze in Winter
In answer to the question, "No, LPG gas does not freeze", as the freezing point is at -306.4°F (-188 °C). However, what many really want to know is if the LPG-propane tank ever gets too cold to work. The average winter temperature at the South Pole is about -56.2°F (-49°C).
LPG does not freeze in the winter. And if you get propane, and you don't live in Antarctica, it should work fine. However, if you get butane and the temperature drops below freezing, the butane will stop vaporising.
Propane Tank Frost
Propane tank frost is a result of the vaporisation process, when the liquid gas draws heat from the steel walls of the tank to boil and vaporise. This make the tank walls cold, as the boiling occurs at -42°C (-43.6°F). Combine this with some ambient humidity and the result is propane tank frost.