Boilers are considered central heating systems because the heat generated by the equipment is spread throughout the home. However, unlike other heating methods, there is typically a small lag time between the boiler turning on and the heat being dispersed.
Link to FuShiDe Boiler
Most boilers produce steam or hot water using natural gas or heating oil, and are either condensing or non-condensing (see below). Boilers are required by the federal government to be at least 80 percent efficient, and can have efficiencies as high as 98.5 percent. Some boilers can be expensive to install, but all types typically last 15 to 30 years, and you can avoid possible repair headaches by reading our guide to the Most and Least Reliable Boilers. You should also look at Consumer Reports’ and surveys of 2,137 boilers, owned by members who installed a new unit between and , to get a clearer picture of which brands are preferred by members.
Gas-Fired Boilers
Gas-fired boilers are fueled by either natural gas or propane, and are highly efficient. However, natural gas is not available everywhere, and some homeowners at the end of a gas pipeline pay higher fuel prices. Propane typically is more expensive than natural gas, but it’s available throughout the U.S.
Oil-Fired Boilers
If you buy a oil-fired boiler, you’ll need heating oil delivered and stored in tanks like the one above, and your operating costs will be affected by the rise and fall of oil prices.
Some boiler manufacturers now offer models that use biodiesel fuel, which produces less pollution than regular heating oil. Depending on oil prices, biodiesel heating oil can be cost-competitive with standard oil. However, because it burns cleaner and lubricates the system, biodiesel fuel can reduce your boiler service and cleaning costs.
Electric Boilers
Electric boilers are highly energy efficient. However, they typically are not economical because electricity costs more than other fuel types in many parts of the country. If you are interested in electric heating, consider a heat pump.
Steam Radiators
Steam heating is one of the oldest heating technologies, and upright metal steam radiators positioned along walls in older homes are common. They can provide consistent, comfortable heat.
Steam radiators need some simple maintenance to work properly and efficiently. In addition, a radiator can warp or create a groove in the floor. If that happens, the radiator may tilt, causing it to make loud banging noises. Plus, steam radiators on exterior walls can radiate some heat to the outdoors, and limit your ability to position furniture around the room.
Hot Water Radiators
More common in newer homes, hot water radiators run along a room’s baseboard or stand upright like a steam radiator. Hot water radiators can reduce your home’s energy consumption because they allow you to control the temperature of each floor or a large space. A heating professional can install automatic valves on the radiators, and connect them to separate thermostats.
The most common problem with hot water radiators is unwanted air in the system. Plus, like steam models, upright hot water radiators can limit your ability to position furniture.
Hydronic Radiant Floor Heating
Hydronic (water) systems are the most common radiant floor heating systems. A boiler heats water and flows it to tubing under the flooring, which acts as a giant radiator. Hydronic systems can heat a whole house, but they’re mainly used to heat a single room or area, and some can be zoned so thermostats regulate each space.
Hydronic radiant heating is more efficient than baseboard heating and usually more efficient than forced-air heating, too. It also doesn’t distribute allergens like forced-air systems can, and uses little electricity. However, hydronic systems can be expensive to install and to repair, and may not be as efficient if the floor is covered with thick carpeting.
Condensing vs. Non-Condensing
All boilers are either condensing or non-condensing. A condensing boiler concentrates water vapor produced in the heating process, and uses waste heat to preheat cold water entering the boiler. Condensing boilers are extremely energy efficient because they can provide ample heat while operating at lower temperatures.
Non-condensing boilers typically operate at higher temperatures, and some heat ends up being vented outside. Non-condensing boilers are 80 percent to 88 percent efficient, while condensing boilers have efficiencies greater than 88 percent.
Sealed Combustion vs. Non-Sealed Combustion
Boilers are either sealed-combustion or non-sealed combustion units. You should buy one that is sealed combustion because it brings outside air into the burner and directs exhaust gases outside. Non-sealed combustion boilers draw heated air in and then send it up the chimney, wasting the energy used to heat the air. Also, sealed-combustion boilers won’t introduce dangerous gases into your home.
Climate
If you live you in a cold climate, a boiler may be a good choice for your home. But if you live in a warm climate, you may not need a central heating system. In that case, consider a heat pump, which can satisfy your air conditioning needs as well as moderate heating requirements.
Fuel Type
Gas-fueled boilers may cost less to operate than oil-fueled ones if heating oil prices are high. However, the fuel type you choose will depend on what’s available in your area.
Sizing
The boiler’s size is as important as its efficiency. If the boiler is undersized, it won’t work efficiently; if it is oversized, it will cost you more to heat your home. Work with a heating and cooling professional, who should use an Air Conditioning Contractors of America (ACCA) Manual J calculation to determine the right boiler type and size. The calculation will take into consideration your home’s foundation, wall thicknesses, insulation values, windows, air filtration and more.
Cooling
Boilers only provide heat; so you’ll need a cooling system, too, if you want to air condition your home.
Boilers are rated with an annual fuel-utilization-efficiency (AFUE) score, which tells you how much energy is being converted into useable heat. New boilers must have an AFUE rating of at last 80 percent, and high-efficiency models are 90 to 98.5 percent efficient. The higher the rating, the higher the equipment cost, but the lower the operating cost.
For example, say your current boiler’s AFUE score is 65 percent and you pay $1,300 a year for fuel bills. If you install a high-efficiency natural gas system with an AFUE of 90 percent, your total yearly savings should be about $364.
Unless it’s an emergency, and your current boiler is no longer functioning, don’t buy a new boiler until you make the rest of your home as energy efficient as possible, because reducing your home’s heating load will allow you to buy a smaller, less expensive system. If needed, you should:
• Add insulation to your attic and walls.
• Add weather stripping around doors and caulk around windows to keep heat from escaping.
• Properly insulate cooling system ducts in crawl spaces and attics.
• Clean your chimney.
• Set your ceiling fans to spin clockwise to blow rising heat down.
• Install and set programmable thermostats to automatically lower the temperature at night and while you are away. Programmable thermostats can save you 10 percent annually on your heating bills.
Boilers should be serviced annually by a heating professional to ensure efficient heating. The technician should:
Hot Water Boilers
• Test the pressure-relief valve and high-limit control.
• Inspect the pressure tank.
• Clean the heat exchanger.
Steam Boilers
• Drain some water to remove sediments.
• Check the safety controls.
• Analyze the water and add chemicals if needed.
• Clean the heat exchanger.
If you want to learn more, please visit our website Hot Water Boiler System.
Both Systems
• Check the vent connection pipe and chimney to see if they are deteriorating.
• Check the heat exchangers and pipes to see if they are leaking.
• Adjust the water and air temperature settings for optimum efficiency and comfort.
Upright and Baseboard Radiators
• Make sure radiators are not obstructed by furniture, carpeting, rugs, and drapes.
• Be sure to release trapped air from hot water radiators at the beginning of the heating season and possibly one more time during the heating season. If you are unsure how to perform this task, contact a heating professional.
• Place shims under the radiators so they are pitched slightly toward the pipe in a one-pipe system or toward the steam trap in a two-pipe system.
• Place heat-resistant reflectors between radiators and exterior walls to keep heat from escaping.
From how to choose a boiler for your home to how different boiler systems affect your heating costs, we’re here to guide you to worry-free warmth. After all, a happy home is a warm home.
Did you know that heating and cooling can account for half of your annual energy costs? That’s right, keeping comfy isn’t cheap. According to the U.S. Department of Energy, the average American household spends over $2,000 annually on energy bills, with heating accounting for a significant portion. But fear not. Choosing the right boiler for your home can help you save some serious dough while keeping Jack Frost at bay.
Residential boiler systems work differently from forced-air systems like furnaces. Instead of heating air and blowing it through ducts, boilers heat water and circulate it through pipes to radiators or radiant floor systems. This method of heat distribution often results in more consistent warmth and can be more energy-efficient in many cases.
Boilers come in all shapes and sizes. Let’s break down the most common types as a part of our guide to choosing a new boiler:
Gas-fired boilers are some of the most efficient steam boilers on the market. But not every neighborhood has access to natural gas, so check your options before you fall in love. If natural gas is available in your area, it's often the most cost-effective fuel choice due to its relatively low price and high efficiency.
When natural gas plays hard to get, oil-fired boilers step up to the plate. If you buy an oil-fired boiler, you’ll need to have heating oil regularly delivered to your home. This heating oil must also be stored in tanks until needed. Just keep in mind that your wallet might feel the pinch when oil prices rise and impact your heating costs from year to year.
Electric boilers are super efficient, as they don't lose heat through venting. They're also compact, quiet, and don't produce emissions in your home. However, they might not be the most budget-friendly option. The operating costs of electric boilers can be higher in regions with expensive electricity rates, so it's essential to consider both the upfront cost and long-term operating expenses.
While less common in modern homes, the residential steam boiler still has its place, especially in older residences. These systems heat water until it turns to steam, which then rises through pipes to radiators throughout the home. When considering how to choose a boiler for your home, remember that steam boilers can be efficient and effective, but they often require more maintenance than hot water boilers.
When deciding what boiler is best for your home, consider the following factors: the boiler's size, venting requirements, and energy efficiency. This guide to choosing a new boiler will help you navigate these important considerations.
Want to save on heating costs? Choosing the right boiler for your home involves more than just crunching energy bill numbers. It's about finding the perfect balance between heating capacity and efficiency. Too small, and you’ll be left shivering. Too big, and you’ll be burning money.
Boiler capacity is measured in BTUs, which stands for British Thermal Units. To estimate BTU requirements for your home's interior spaces, use the following baselines for your calculations:
So, how much is a boiler for a 2,000-square-foot house? Let’s take a look:
Remember, these are ballpark figures. For a perfect fit, consult with a Pro who can assess your home's unique needs.
Residential boilers must be vented. If you have chimney access in a closed-in area of your home, you can locate your boiler there. However, if the boiler requires its own forced-air venting system, you will need to locate it in an open area of your home so it can gather air for venting purposes. Understanding venting requirements is crucial when learning how to choose a boiler for your home.
An EnergyStar rating on your boiler means it meets strict energy-efficiency guidelines set by the EPA and is therefore an energy-efficient boiler, saving you money. Look for an oil boiler with at least an 80 percent rating or a gas boiler that runs at 89 to 98 percent efficiency. Boilers that use electricity normally run at 100 percent efficiency because they lose no energy to venting. Electric boilers are an especially attractive option if you live in a region where electricity costs are low. Energy efficiency is a key factor in determining the best residential boilers for your needs.
In a standard boiler, some of the heat required to boil water and produce steam is lost as the fuel is burned and converted to energy. Modern, high-efficiency boilers have been designed to trap any escaping heat and direct it back into the boiler system itself.
Low-efficiency boilers tend to experience high levels of heat loss, requiring more fuel to do the work of an efficient system. Most boilers that are over 10 years old have efficiency ratings of just 50 to 70 percent. That means between 30 and 50 percent of the fuel used to heat your house is wasted. Besides saving on fuel costs, a high-efficiency boiler is also more environmentally friendly because it uses less fuel and creates less pollution.
The Federal Trade Commission requires that new boilers display their Annual Fuel Utilization Efficiency (AFUE) rating so that consumers can adequately compare units. These boiler ratings are:
Understanding these ratings is crucial when determining how to choose a boiler for your home that meets your efficiency needs.
Even the best residential boilers need a little TLC. That’s where American Home Shield comes in. We’ve got your back with our comprehensive home warranty plans, including coverage for heating systems.
Why stress about unexpected breakdowns when you can be worry-free? Check out our heating system coverage and HVAC upgrade program to keep your home happy and warm.
Ready to boost your boiler know-how even further? Our residential boiler maintenance guide is packed with tips to keep your system running smoothly.
Remember, a well-chosen and well-maintained boiler is your ticket to worry-free warmth. So go ahead, toast that toasty home of yours. With American Home Shield, you can focus on living your best life while we take care of covered breakdowns. Now that's something to feel good about!
If you are looking for more details, kindly visit Commercial Boiler Systems.