The HVAC system plays an important part in maintaining good indoor air quality in your building. After all, the “V” in HVAC does stand for ventilation. Incorrect settings or a lack of care and maintenance can lead to indoor air quality issues, resulting in uncomfortable temperatures, low humidity levels and the spread of allergens and bacteria. Read more
Every home has different heating requirements, and therefore needs a furnace that’s the appropriate size to meet them. In this blog, residential and commercial HVAC repair contractor Schmitt shares insight on the importance of furnace sizing.
Size Does Matter
Your home needs a furnace that will supply heat efficiently, consistently and in the appropriate amount, which is why choosing the right furnace size is important. An undersized furnace will redline all the time—and consume a lot of fuel in the process—just to meet minimum heating requirements. To illustrate using an extreme example, it’s like trying to heat an entire house using a portable space heater.
Oversized furnaces can also be problematic, as they provide too much heat too fast, leading to “short cycling”. In other words, the furnace turns off and on too fast, which places additional strain on it, consumes more energy and can potentially lead to premature breakdown. The right sizing applies to both heating and cooling systems, so your air conditioner needs to be properly sized as well.
How Furnace Size Is Calculated
Your HVAC technician will take several factors into consideration before estimating the furnace size that will fulfill your home’s heating requirements:
Your Home’s Square Footage — This includes all the rooms that require heating, including finished basements and attics. Rooms vary in size and shape, of course, all of which will be taken into account.
Heating Factor — Heating as well as cooling is relative to outdoor temperatures. There are five standard zones in the United States, all with different BTU (British thermal unit) requirements. The farther from the equator, the higher the required BTUs will be. California is located in Zone 2, with a heating factor of 30 to 35 BTUs. By contrast, some of the northernmost areas in the country, such as Minneapolis, require 50 to 60 BTUs.
Insulation — A well-insulated home won’t require as much heating. In addition to wall and attic insulation, ceilings and floors in certain rooms should be insulated, and don’t forget to caulk and seal your windows and doors as well.
To calculate your home heating requirements, multiply the square footage of your house by the heating factor. The better insulated the house is, the lower the required BTUs within the resulting range. For example, if your home’s total floor area is 2,000 square feet and is well-insulated, then it will take around 60,000 BTUs to heat your home. A furnace with a corresponding output will then be selected and installed.
Call Schmitt for All Your Heating Needs
Maintaining good indoor air quality is one of your best defenses against fall allergies, and your HVAC system plays an essential part. In this blog, heating and air conditioning contractor Schmitt takes a close look at how you can make your HVAC system your primary defense against fall allergies.
Hot and cold spots in your home can range from annoying to downright uncomfortable. They may even place additional strain on your heating and air conditioning system, which can increase energy consumption. In this blog, HVAC contractor Schmitt takes a look at how to eliminate hot and cold spots in your home.
While you don’t need to be an HVAC expert, it’s in your best interest to have at least a fundamental understanding of how your heating and cooling system works. This basic knowledge will come in handy during situations such as tune-ups so you can be sure your service company isn’t cutting corners.
If you’re planning on doing an air conditioning installation, consider upgrading your thermostat too. Getting a smart device can change the way your HVAC system works for you.
R-22 is perhaps the most popular air conditioner refrigerant today. It’s in the hydrochlorofluorocarbon (HCFC) group, a series of chemicals that replaced the notoriously ozone-depleting chlorofluorocarbons (CFCs). But HCFCs are just a Band-Aid solution, and, like all “bandages”, they must be changed eventually.