Forced-air gas
From Wikipedia, the free encyclopedia
Forced-air gas heating systems are used in central air heating/cooling systems for houses. Sometimes the system is referred to as "forced hot air".
Gas-fired forced-air furnaces have a burner in the furnace fuelled by natural gas. A blower forces cold air through a heat exchanger and then through duct-work that distributes the hot air through the building.[2] Each room has an outlet from the duct system, often mounted in the floor or low on the wall – some rooms will also have an opening into the cold air return duct. Depending on the age of the system, forced-air gas furnaces use either a pilot light or a solid-state ignition system (spark or hot surface ignition) to light the natural gas burner.[3] The natural gas is fed to buildings from a main gas line. The duct work supplying the hot air (and sometimes cool air if an AC unit is tied into the system) may be insulated. A thermostat starts and stops the furnace to regulate temperature. Large homes or commercial buildings may have multiple thermostats and heating zones, controlled by powered dampers. A digital thermostat can be programmed to activate the gas furnace at certain times. For example, a resident may want the temperature in their dwelling to rise 15 minutes before returning from work.[4]
Simple types of gas-fired furnace lose significant amounts of energy in the hot waste gases. High-efficiency condensing furnaces condense the water vapor (one of the by-products of gas combustion) and extract the latent heat to pre-heat the incoming furnace airflow, using a second heat exchanger.[2] This increases the efficiency (energy delivered into the building vs. heating value of gas purchased) to over 90%. An incidental beneficial effect is that the exhaust flue is much smaller and can be made of plastic pipe since the exhaust gas is much cooler. As a result it can be more easily routed through walls or floors. However, the condensing furnace is more expensive initially because of the extra induced-draft fan and condensate pump required, and the extra heat exchanger in the firebox.
The heat exchangers may be damaged by corrosion or metal fatigue from many heating and cooling cycles. A small leak of combustion gases into the heated air can be dangerous to the occupants of the heated space, because of possible carbon monoxide build up.[2]
Residential and commercial buildings located in rural and remote areas do not often use natural gas forced hot air systems. This is due to the financial impracticality of running natural gas lines many miles past areas of relatively sparse habitation. Usually these rural and remote buildings use oil heat or propane, which is delivered by a truck and stored in a tank on the property.[5]
Everett, Washington
Coordinates: 47°58′45″N 122°12′06″W
From Wikipedia, the free encyclopedia
Everett dᶻəɬigʷəd |
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Everett Station and the city skyline |
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Seal Logo |
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Location of Everett, Washington |
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Everett Location within Washington |
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Coordinates: 47°58′45″N 122°12′06″W | |
Country | United States |
State | Washington |
County | Snohomish |
Established | 1890 |
Incorporated | May 4, 1893 |
Government | |
• Type | Mayor–council |
• Mayor | Cassie Franklin |
Area | |
• City | 47.91 sq mi (124.08 km2) |
• Land | 33.19 sq mi (85.96 km2) |
• Water | 14.71 sq mi (38.11 km2) |
Population | |
• City | 110,629 |
• Estimate
(2022)[2] |
111,337 |
• Rank | US: 280th WA: 7th |
• Density | 3,358.6/sq mi (1,296.76/km2) |
• Metro | 4,018,762 (US: 15th) |
Demonym | Everettite |
Time zone | UTC−8 (Pacific (PST)) |
• Summer (DST) | UTC−7 (PDT) |
Zip codes |
98201, 98203, 98204, 98206, 98207, 98208, 98213[3] |
Area code | 425 |
FIPS code | 53-22640 |
GNIS feature ID | 1512198[4] |
Website | everettwa |
Everett (/ˈɛvərɪt/; Lushootseed: dᶻəɬigʷəd) is the county seat and most populous city of Snohomish County, Washington, United States. It is 25 miles (40 km) north of Seattle and is one of the main cities in the metropolitan area and the Puget Sound region. Everett is the seventh-most populous city in the state by population, with 110,629 residents as of the 2020 census. The city is primarily situated on a peninsula at the mouth of the Snohomish River along Port Gardner Bay, an inlet of Possession Sound (itself part of Puget Sound), and extends to the south and west.
The Port Gardner Peninsula has been inhabited by the Snohomish people for thousands of years, whose main settlement, hibulb, was located at Preston Point near the mouth of the river. Modern settlement in the area began with loggers and homesteaders arriving in the 1860s, but plans to build a city were not conceived until 1890. A consortium of East Coast investors seeking to build a major industrial city acquired land in the area and filed a plat for "Everett", which they named in honor of Everett Colby, the son of investor Charles L. Colby. The city was incorporated in 1893, shortly after the arrival of the Great Northern Railway, and prospered as a major lumber center with several large sawmills. Everett became the county seat in 1897 after a dispute with Snohomish contested over several elections and a Supreme Court case. The city was the site of labor unrest during the 1910s, which culminated in the Everett massacre in 1916 that killed several members of the Industrial Workers of the World.
The city of Everett maintains an Office of Neighborhoods which facilitates communication between the city and recognized neighborhood associations. The neighborhood associations are independent from the city and have elected leaders.[162] Various neighborhoods in Everett have views of the Cascade and Olympic mountains, including Mount Baker and Mount Rainier.[163][164]
As of 2019, Everett's 19 recognized neighborhood associations are:[165]
Downtown Everett is generally defined as the area north of Pacific Avenue, east of West Marine View Drive, south of Everett Avenue, and west of Broadway.[175] It is home to city and county government offices, high-rise office buildings, hotels, and apartment buildings.[124][125] The Angel of the Winds Arena is on the west side of Broadway, anchoring a small historic district on Hewitt Avenue.[176] Several downtown streets are named for the founders of the Everett Land Company and their associates, including John D. Rockefeller, the Rucker Brothers, Charles L. Colby, and shipbuilder Alexander McDougall.[177][178]
The city government approved plans in 2018 to allow for high-rise buildings as tall as 25 stories and with reduced parking requirements to encourage denser development in anticipation of a future Link light rail station.[179] In the early 2020s, several apartment buildings with a combined 650 units were completed in downtown and the waterfront district.[180]
On the other hand, a gas furnace is engineered with a lifespan of 15 � 20 years. Although new gas furnaces have a lower lifespan, they cost less money to operate when compared to new electric furnaces. In addition, gas furnaces are able to heat your home at a faster rate when compared to electric systems. Sep 11, 2023
If your furnace is over 20 years old, it might be time to consider a replacement, especially if you're experiencing issues like poor air quality, frequent repairs, or high energy bills.
There is noticeable discolouration on the filter. You can see the buildup of dirt and dust. You find your home needs dusting frequently. It seems your HVAC system is cycling longer.
Leave the breaker(s) off for at least 10 minutes while the system is off and �rebooting.� After 10 minutes have elapsed, go back to the breaker box and flip the HVAC breaker(s) back on. Jan 9, 2024