Heating Plumbing Air Conditioning Magazine

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Heating Plumbing Air Conditioning Magazine

Heating Plumbing Air Conditioning Magazine

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Essential Tips For Hvac Professionals

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Heating Plumbing Air Conditioning Magazine

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Heating Plumbing Air Conditioning Magazine

Designing Hydraulic Systems On High Rise, Large Buildings

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Heating Plumbing Air Conditioning Magazine

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Air Conditioner Installation And Replacement Costs

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Heating Plumbing Air Conditioning Magazine

Keep reading to learn about the best HVAC techniques for indoor comfort and energy efficiency, according to Richard Trethewee, This Old House plumbing and heating expert.

Not so long ago, staying warm meant shoveling coal or chopping wood. Those two fuels—which, as the saying goes, heat you twice—were responsible for three-quarters of all residential heating in the 1940s. Now, with gas- and oil-fired central heating, being comfortable indoors is no more difficult than lifting a finger. Adjust the thermostat.

Heating Plumbing Air Conditioning Magazine

Wall Air Conditioner Guide

But getting to that point is probably the most technically challenging part of any residential construction project. For starters, you want maximum efficiency, a fact exacerbated by rising fuel prices. Heating, ventilating and air-conditioning (HVAC) consumes about half of a home’s energy bill, so every percentage point improvement makes a big difference. You want your HVAC professional to consider all the factors that influence comfort—including humidity, air velocity, air quality, and radiant energy—and choose equipment based on its ease of maintenance and expected longevity. life.

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Plumbing and heating specialist Richard Trethewee. His advice: Hire reputable installers who know how to do heat loss calculations and insist on components that receive an Energy Star high-efficiency rating.

Heating Plumbing Air Conditioning Magazine

Keep reading for a look at the key components of an advanced heating and cooling system that Richard recommends if you’re building from scratch.

Hpac December 2014 By Annex Business Media

In cold-weather regions where temperatures stay below 70 degrees for more than half the year, Richard Trethewey recommends a single fuel-efficient boiler to provide heat and hot water for maximum comfort. and efficiency.

Heating Plumbing Air Conditioning Magazine

“Water conducts heat better than air,” he said. Lower floors use hot water for radiant heat; It delivers heat to the upper forced air system. To keep the house cool, Richard mentions a traditional air-conditioning system, also shown here, which uses the same ducts used to heat the upper floor.

When a house is built so tightly that it cannot “breathe,” it suffers from high levels of indoor moisture (which promotes mold growth), high levels of carbon dioxide, and other toxins. ), and plain old bad smells (from cooking and smoking).

Heating Plumbing Air Conditioning Magazine

Family’s Leadership Spearheads Plumbing…

A hybrid air exchanger (below) solves these problems by taking in fresh air outside while it expels stale air inside. In winter, it uses the exhausted air to warm and humidify the incoming cold air. In summer, it cools and dehumidifies the humid outside air. And as it works, it filters out contaminants and odors in the air.

“Sooner or later, every household will need one of these units,” says Richard. He recommends connecting it to a separate duct system that serves the bathrooms, bedrooms and kitchen.

Heating Plumbing Air Conditioning Magazine

These simple devices save energy by controlling the temperature of the boiler or furnace in response to changes in outside temperature. On a zero-degree day, for example, the water in the boiler needs to be 180 degrees to heat the house. But on a 35-degree day, 125-degree water might be enough.

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External reset controls make adjustments, protecting the heating unit from excessive on and off cycles and smoothing out uncomfortable internal temperature changes resulting in full control of thermostat. Just make sure your heating unit works with this type of device. “Resetting the control can easily improve system efficiency by at least 10 to 15 percent,” Richard said.

Heating Plumbing Air Conditioning Magazine

A byproduct of burning natural gas is hot water vapor, which until recently went up the stack with the rest of the exhaust gases. This heat loss prevented the boiler from being more than 85 percent efficient. Condensing boilers use a heat exchanger to remove heat from the steam before it leaves. “It’s a quantum leap,” says Richard. “Some of these units achieve 96 percent efficiency.”

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Shining floors changed the way Americans thought about comfort. The principle is essentially the same as an old-fashioned radiator, except that instead of heating a large piece of metal, the mass is heated by hot water pipes or electrical wires beneath the surface. Not only is the heat more gentle and efficient, it’s more comfortable because people like to keep their feet warmer than their heads, Richard says. “Forced air heating does the opposite: it gives you cold feet and a hot head.”

Heating Plumbing Air Conditioning Magazine

Infographic: 4 Ways To Prevent Short Circuits In Your Home

In-floor heating goes back at least to ancient Roman baths, where a fire heated the air under stone floors. Modern in-floor heating uses loops of PEX pipe, either embedded in poured concrete or installed in grooved panels over a wood subfloor, as shown above. The same principle can be used outside to melt snow on a driveway or walkway.

All HVAC systems require an annual cleaning and tune-up, usually done in the fall by your heating professional or fuel supplier. “You wouldn’t let your car go more than a year without a checkup, would you?” said Richard. Homeowners can easily remove the register and vacuum floor vents (especially kitchen vents) at least once a year. Heavily dirty ductwork may require professional cleaning.

Heating Plumbing Air Conditioning Magazine

Richard recommends leaving 3 feet of clear space to allow airflow, prevent fire hazards, and perform annual maintenance.

The Official Hvac 101 Post: The Do’s And Don’ts Of Heating, Cooling, And Water

“No contractor wants to hear a customer say, ‘I don’t have enough heat,'” says Richard. “So they install a boiler or furnace big enough for the coldest day of the year, with a 25 to 50 percent safety factor. But the coldest day of the year only happens for a few hours. So now it’s you’ve already paid. This device 99.9 percent of the time is too big for

Heating Plumbing Air Conditioning Magazine

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