Barron Heating AC Electrical & Plumbing Blog: Archive for the ‘High Efficiency Systems’ Category

Spring Maintenance Checklist

Monday, March 20th, 2017

Is your house ready for spring?

Man Cleaning Gutters on Ladder

Although this winter has brought us an unusual amount of school-canceling, perilous-driveway-navigating, and downright gloomy weather, spring is inevitable. And while this light at the end of the tunnel may seem miles and miles away, the last thing we want is for the warmer weather to take us (and our house) by surprise.

What are some steps to take towards a smooth spring transition?

Exterior Inspection

While we have the ability to don our heavy-duty rain apparel in wet weather, our houses are outside and without Gortex through rain, wind, sleet, and snow here in the Pacific Northwest. At the end of every winter season  it’s a good idea to do a walkaround of your property and visually inspect your property to catch issues, especially in the following problem areas:

Roof

Your roof takes the brunt of winter weather. You can even do a simple inspection of your roof without stepping on a ladder. If your eyesight isn’t the best, grab a pair of binoculars or even your iPhone camera to zoom in and check for obvious changes. Shingles popping up, buckling, cracking, or just not looking right? Better call in a roofer to tackle things.

Chimney

Although your masonry fireplace may have been cozy in the winter, water damage to your chimney joints can leave your house decidedly un-cozy if not taken care of. If you spot crumbling masonry, vegetation, or a calcium-like buildup on your chimney, you may need to reseal your chimney with a water-resistant barrier.

Gutters

Get rid of those leaves taking up residence in your gutters and downspouts. You wouldn’t want accumulated debris causing water damage to your eaves or trim, or pooling around your foundation, would you? Full gutters may also be inviting to critters who can wreak havoc on your attic space.

Windows

Check to make sure any caulking or weather stripping around your windows is intact and recaulk if needed; a tight seal around your windows will keep leakage to a minimum and will help your heating/cooling system to work more efficiently. It doesn’t hurt to give your windows a solid cleaning as well–but try to avoid harsh chemicals and abrasives when doing so as to not cause damage to the glass, sills, frames, or screens.

Deck and Porches

Decks, patios, porches, stairs and railings may need special attention after a long and wet winter. Check to make sure there is no warping, discoloration, splintering, loose boards or accumulated debris. Wood decks and fences should also be treated every 4-6 years, if the stain doesn’t look like it should or water has turned some of the wood a dark grey, hire a deck professional to treat your deck and fence.

Landscape

Trim vegetation back from structures; errant limbs and leaves can leave marks in your home’s paint and may require time and money to fix. You can also start planning or executing projects–like gardens, ponds, walkways, or any other landscaping changes you’d like to make on your property so that you’re not behind come summer.

Interior Upkeep

Bust out the Dustbuster, unearth the mop, and take a deep breath: spring is in the air. Or is that just the smell of Lemon Pledge? Cleaning up around the house is a great way to usher in a new season and get us ready for warmer weather. Now that the outside of our house is taken care of, what’s on the list for the inside?

General Cleaning

Here’s where that Pledge may come in handy. Doing a sweep of the house and cleaning the oft neglected things–dusty nooks and crannies, window coverings, tops of cabinets, ceiling fans, backsplashes, etc.–will not only make things look nicer, it was also improve your indoor air quality (IAQ) by eliminating some pesky allergens like dust and pet dander.

Read: Got Dust? The Spots You May Be Missing

Air Conditioner Maintenance

Speaking of limiting allergens–making sure your air conditioner is running smoothly and efficiently is an excellent way to keep you and your home healthy. You should change the filter, check hose connections for leaks, and make sure the drain pans are draining freely. You can always schedule a maintenance appointment with a professional if you suspect your unit is not functioning properly.

Attic Inspection

Mold, insects, and mice–oh no! Inspect your attic and crawl spaces to make sure none of these invasive issues have made your home <their home. The right ventilation and insulation will deter mold or pests from colonizing further (especially in the warmer months to come). If you’re not comfortable doing this yourself, bringing in a professional may be necessary to fully assess the situation.

Read: 10 Things You Don’t Know Are in Your Crawlspace

Basement Care

Much like your attic, your basement requires special seasonal attention as well. Basements are prone to dampness and insects and need to be ventilated properly. If you spot cracks in poured-concrete walls, find insect tunnels in any wood framing, or suspect other issues, you may need to call in a professional to keep your basement safe.

A new season means a new list of maintenance projects. Stay ahead of the curve by checking in with your home and catching potential issues before they get out of hand and cost you serious time and money. While many aspects of this list can be done by you, the homeowner, there are professionals to help you assess situations and perform more in-depth maintenance if need be. What’s on your spring cleaning list?

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Go Geothermal

Tuesday, February 21st, 2017

Looking for an efficient, cost effective, and environmentally friendly heating/cooling system? A geothermal heat pump is the greenest way to go.

The basics

Even though the air temperature fluctuates a significant amount over the seasons, the ground absorbs nearly half the suns energy, keeping a more consistent temp under the surface. Geothermal heat pumps take advantage of this fact by employing earth loops– usually closed-system loops made of piping– to tap into stable underground temperatures and deliver heat or cooling when you need it.

These systems work by circulating an antifreeze solution in the loop between the ground source heat pump and your house, exchanging heat and distributing it through a conventional duct system to heat or cool your house.

Geothermal heating

It’s winter and the air outside is at its coldest. A geothermal heat pump system easily absorbs ground heat from the abundant supply stored below your home, and consumes less energy than a traditional pump system in the process.

Geothermal cooling

When warm summer weather rolls around, a geothermal heating and cooling system absorbs heat from your home and transfers it to the underground loop where it is then absorbed by the cooler earth. The geothermal heat pump uses the cool water returning from the ground to create cool, dehumidified air conditioning for your home.

Different kinds of loops

Depending on what your unique space and lifestyle requires, different kinds of earth loops may be installed.

Horizontal Loops Horizontal Loops
Often used when adequate land surface is available. Depending on geothermal system needs and space available, pipes are placed in trenches that range in length from 100 to 400 feet.

Vertical Loops Vertical Loops
The ideal choice for a geothermal heat pump when available land surface is limited. Well drilling equipment is used to bore small-diameter holes from 100 to 400 feet deep.

Pond (Lake) Loops Pond (Lake) Loops
Very economical to install when a large body of water is available for use by the geothermal heating and cooling system. Coils of pipe are simply placed on the bottom of the pond or lake to capture the geothermal energy.

Open loops (Well-Water Systems) Open loops (Well-Water Systems)
In ideal conditions, an open-loop application can be the most economical type of geothermal system. These use groundwater from a well as a direct energy source.

Images and descriptions via waterfurnace.com

Fun facts

  • An EPA study of energy efficiency concluded geothermal energy is the most environmentally friendly heating/cooling system.
  • The United States National Renewable Energy Laboratory concluded that geothermal energy is more efficient and cost-effective compared with conventional residential systems.
  • Available everywhere in the United States, geothermal energy can be found underground virtually anywhere.
  • Geothermal cost savings can be increased by geothermal energy incentives, available from federal, state, local, and utility sources.

Cost comparison

Energy and cost savings of geothermal heat pumps will vary by region and type of conventional system they’re compared with. But the energy cost of geothermal versus conventional HVAC systems will always be lower — and the geothermal system will always be greener.

Click to enlarge.

How much can you save in energy costs with a geothermal system? Calculate your home’s potential geothermal system cost savings

Looking for more information? Check out energy.gov for further resources: https://energy.gov/energysaver/geothermal-heat-pumps 

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6 Tips to Keep Your Wallet Happy This Winter

Wednesday, December 14th, 2016

Don’t let your winter heating costs get you down


Sure, in the short walk from your heated car to your heated office the cold winter air may be refreshing, but I’m sure there are few among us who don’t appreciate the comfort of a well-heated house at the end of the day. I’ll also bet there are few among us whose energy bills don’t see some kind of spike in these winter months either. That part’s not so comforting.

But before you scramble to take up residence someplace more tropical, we’ve put together 6 tips to help keep your house warm and wallet happy this winter.

1. Go smart (with a smart/programmable thermostat)

Automatically control the temperature of your house when you’re working, sleeping, or otherwise occupied with a programmable thermostat, and you can save from 5 to 20% on your heating bill. No need to worry about remembering to turn your heat down when you leave the house–programmable thermostats take the hassle out of heating.

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Homeowners: Don’t get duped!

Wednesday, February 3rd, 2016

Read these tips on how to choose a contractor and protect your money.

 

Homeowners should be very careful before choosing a heating and cooling contractor for their home. There are huge differences in quality and professionalism throughout the industry. The “best” contractors will typically be members of one or more professional contractor associations. You should be looking for contractors who are well-educated and certified in three particular areas:

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Does Your HVAC System Suffer From High Blood Pressure?

Wednesday, November 4th, 2015

Your furnace, heat pump or air conditioner is the heart of your comfort system.


It’s often said that your furnace, heat pump or air conditioner is the heart of your comfort system. Following the analogy further, your air ducts are its veins & arteries.

And just like high blood pressure is bad for your heart, high “duct static pressure” is bad for your heating and cooling system, your comfort – and your wallet.

When you go to the doctor for a check-up, common practice is for the doctor or nurse to measure your blood pressure. Our service technicians now have the instruments and training to do the same for your ducts when we do the seasonal tune-up, or a home and duct performance assessment.

We’ve been doing this for a while now, and the results are often eye-opening. The heating and cooling equivalent to 80 over 120 is “half an inch” of water column pressure for most systems. When we test the duct pressure, we now routinely find pressures significantly higher than this –often over double!

Why does this matter?

Higher Utility Bills: High pressures in the ducts leads to lower airflow. Lower airflow means lower efficiency. Lower efficiency means higher monthly utility bills.

Comfort: Lower airflow leads to poor distribution of conditioned air throughout the home, contributing to hot and cold spots, or the system not keeping up on the hottest or coldest days.

Noise: High static pressure is often a clue as to why a system is excessively noisy – the same repairs to reduce static pressure usually decrease noise as well.

Repairs: Low airflow causes furnaces to overheat internally, and air conditioners and heat pumps to not function smoothly. Many common expensive repairs – or premature total failure – are directly attributable to low airflow.

The good news is that identifying high static pressure allows us to prescribe the right medicine to make your system and your home happier! Each system is different – but most common airflow improvements are fairly simple and economical. And best of all, they pay for themselves through more efficient operation and lower utility bills.

Next time your HVAC contractor visits your home, ask your technician to take the time to check your ducts static pressure and explain the results. If you are having any comfort, dust or high utility bill issues, give a home performance trained contractor a call and they’ll explain your options for home & duct performance assessments.

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Fixing Your Duct System Makes “Cents”

Wednesday, October 9th, 2013

In this article we are going to be discussing the EFFICIENCY MATH of purchasing a furnace and how duct sealing plays into your decisions.

Many customers start with the goal of “increasing their efficiency”, however, what they should be focusing on is “decreasing energy use”. In a lot of ways this is similar to the Government cutting spending or increasing taxes. For example, if there is a budget that needs to be met, they can either cut spending or increase taxes to meet it. Saving energy is like this in that if we need to lower your energy use we can either cut waste or increase efficiency.

The real kicker is that not one of us would buy a hybrid car and then run it on half inflated tires, but thousands of consumers make a similar decision every day when buying a heating system. Time and time again, they are told to increase the equipment efficiency without regard to whether the duct system is diminishing the total system efficiency through leaks to the outside.

It is a matter of simple math that no one ever explains, which scenario from below would you pick?

80% Furnace with Aeroseal Duct Sealing (Approx Cost $3500)

  • ($1.00 Given to Furnace) x (Furnace Efficiency of 80%)
    = $0.80 Delivered to Ducting
  • ($0.80 Delivered to Ducting) x (3% Duct Leakage After Aerosealing)
    = $0.776 Delivered Into the Home (Not bad…)

95% Furnace without Duct Sealing (Approx Cost $3500)

  • ($1.00 Given to Furnace) x (Furnace Efficiency of 95%)
    = $0.95 Delivered to Ducting
  • ($0.95 Delivered to Ducting) x (33% Average Duct Leakage)
    = $0.627 Delivered Into the Home (Ugh, that’s horrible.)

95% Furnace with Aeroseal Duct Sealing (Approx Cost $5000)

  • ($1.00 Given to Furnace) x (Furnace Efficiency of 95%)
    = $0.95 Delivered to Ducting
  • ($0.95 Delivered to Ducting) x (3% Duct Leakage After Aerosealing)
    = $0.922 Delivered Into the Home (Winning!)

The Moral of the story? It is important to buy the right things for the right reasons.

Posted by Wes Diskin

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Decoding Furnace Efficiencies

Thursday, August 22nd, 2013

A forced air furnace or boiler’s efficiency is measured by annual fuel utilization efficiency (AFUE). The Federal Trade Commission requires new furnaces or boilers to display their AFUE so consumers can compare heating efficiencies of various models. AFUE is a measure of how efficient the appliance is in the energy in its fuel over the course of a typical year.

Specifically, AFUE is the ratio of heat output of the furnace or boiler compared to the total energy consumed by a furnace or boiler. An AFUE of 90% means that 90% of the energy in the fuel becomes heat for the home and the other 10% escapes up the chimney and elsewhere. AFUE doesn’t include the heat losses of the duct system or piping, which can be as much as 35% of the energy for output of the furnace when ducts are located in the attic.

An all-electric furnace or boiler has no flue loss through a chimney. The AFUE rating for an all-electric furnace or boiler is between 95% and 100%. The lower values are for units installed outdoors because they have greater jacket heat loss. However, despite their high efficiency, the higher cost of electricity in most parts of the country makes all-electric furnaces or boilers an uneconomic choice. If you are interested in electric heating, consider installing a heat pump system.

The minimum allowed AFUE rating for a non-condensing fossil-fueled, warm-air furnace is 78%; the minimum rating for a fossil-fueled boiler is 80%; and the minimum rating for a gas-fueled steam boiler is 75%. A condensing furnace or boiler condenses the water vapor produced in the combustion process and uses the heat from this condensation. The AFUE rating for a condensing unit can be much higher (by more than 10 percentage points) than a non-condensing furnace. Although condensing units cost more than non-condensing units, the condensing unit can save you money in fuel costs over the 15- to 20-year life of the unit, and is a particularly wise investment in cold climates.

You can identify and compare a system’s efficiency by not only its AFUE but also by its equipment features, listed below.

Old, low-efficiency heating systems:

  • Natural draft that creates a flow of combustion gases
  • Continuous pilot light
  • Heavy heat exchanger
  • 68%–72% AFUE

Mid-efficiency heating systems:

  • Exhaust fan controls the flow of combustion air and combustion gases more precisely
  • Electronic ignition (no pilot light)
  • Compact size and lighter weight to reduce cycling losses
  • Small-diameter flue pipe
  • 80%–83% AFUE

High-efficiency heating systems:

  • Condensing flue gases in a second heat exchanger for extra efficiency
  • Sealed combustion
  • 90%–97% AFUE

Posted by Wes Diskin

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Understanding Heat Pump Efficiency

Tuesday, July 23rd, 2013

Heat pumps can be much more efficiency than other systems. Here in the Northwest, a heat pump can have an efficiency starting at 300%, while electric heating systems have an efficiency of 100%. Oil heat systems range in efficiency from 50% to 85%. Natural gas systems range in efficiency from 50% to 95%.

The efficiency of a heat pump is indicated by Coefficient of Performance or COP. The COP is the ratio of what you get in heat energy from the heat pump divided by what you pay for in electric energy to provide that heat. For example, a COP of 3.0 means for every dollar’s worth of heat delivered to your home, you only need to buy $0.33 worth of electricity. With standard heat pumps, as the outdoor temperature decreases, the efficiency and COP of a heat pump decreases. When the outdoor air temperature is 47 degrees, many heat pumps work with COPs in the range of 3 to 3.8. At 17 degrees, COPs are typically 2.8 to 3.4. The higher the COP, the more efficient the heat pump.

In the Pacific NW, a properly sized and well-installed heat pump will have an average COP of 2.75 over the course of a heating season. (Based on Base Model Efficiency)

There are other factors which reduce the efficiency of a heat pump throughout the heating season. For instance, a heat pump’s outdoor coils periodically need to be defrosted. This is done by reversing the cycle of the heat pump so that the heat from the house thaws the ice accumulated on the coils.

Efficiency is further reduced whenever the back-up heating system is used. This back-up system can be electric, natural gas or oil and is required during times when the outside temperature is so low that the heat pump is not able to provide enough heat for the house. This is called the balance point.

Heat pumps are also rated by a measurement call the Heating Seasonal Performance Factor (HSPF), which estimates the heat output relative to the energy consumed for the entire heating season. The higher the HSPF the less energy you will need to operate the heat pump. An HSPF of 8 corresponds approximately to an average COP of 3.

Posted by Wes Diskin

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