• Sign In
  • Create Account
  • Sign Out
  • My Account
  • NEWS
  • PRODUCTS
  • CONTRACTORS
  • ENGINEERS
  • RADIANT & HYDRONICS
  • INSIGHTS
  • MEDIA
  • RESOURCES
  • EMAGAZINE
  • SIGN UP!
cart
facebook instagram twitter linkedin youtube
  • CONTRACTORS
  • BATH & KITCHEN PRO
  • BUSINESS MANAGEMENT
  • HIGH EFFICIENCY HOMES
  • TECHNOLOGY
  • WATER TREATMENT
  • PMC COLUMNS
  • PMC COLUMNS
  • Dave Yates: Contractor’s Corner
  • John Siegenthaler: Hydronics Workshop
  • Kenny Chapman: The Blue Collar Coach
  • Matt Michel: Service Plumbing Pros
  • Scott Secor: Heating Perceptions
  • ENGINEERS
  • CONTINUING EDUCATION
  • DECARBONIZATION | ELECTRIFICATION
  • FIRE PROTECTION
  • GEOTHERMAL | SOLAR THERMAL
  • PIPING | PLUMBING | PVF
  • PME COLUMNS
  • PME COLUMNS
  • Christoph Lohr: Strategic Plumbing Insights
  • David Dexter: Plumbing Talking Points
  • James Dipping: Engineer Viewpoints
  • John Seigenthaler: Renewable Heating Design
  • Lowell Manalo: Plumbing Essentials
  • Misty Guard: Guard on Compliance
  • RADIANT & HYDRONICS
  • RADIANT COMFORT REPORT
  • THE GLITCH & THE FIX
  • INSIGHTS
  • CODES
  • GREEN PLUMBING & MECHANICAL
  • PROJECT PROFILES
  • COLUMNS
  • SPONSOR INSIGHTS
  • COLUMNS
  • Codes Corner
  • Natalie Forster: Editorial Opinion
  • Guest Editorial
  • MEDIA
  • PODCASTS
  • VIDEOS
  • WEBINARS
  • RESOURCES
  • INDUSTRY CALENDAR
  • DIRECTORIES
  • EBOOKS
  • PM BOOKSTORE
  • CE CENTER
  • MARKET RESEARCH
  • CLASSIFIEDS
  • EMAGAZINE
  • EMAGAZINE
  • ARCHIVE ISSUES
  • CONTACT
  • ADVERTISE
  • PME EMAGAZINE ARCHIVES
search
cart
facebook instagram twitter linkedin youtube
  • Sign In
  • Create Account
  • Sign Out
  • My Account
  • NEWS
  • PRODUCTS
  • CONTRACTORS
    • BATH & KITCHEN PRO
    • BUSINESS MANAGEMENT
    • HIGH EFFICIENCY HOMES
    • TECHNOLOGY
    • WATER TREATMENT
    • PMC COLUMNS
      • Dave Yates: Contractor’s Corner
      • John Siegenthaler: Hydronics Workshop
      • Kenny Chapman: The Blue Collar Coach
      • Matt Michel: Service Plumbing Pros
      • Scott Secor: Heating Perceptions
  • ENGINEERS
    • CONTINUING EDUCATION
    • DECARBONIZATION | ELECTRIFICATION
    • FIRE PROTECTION
    • GEOTHERMAL | SOLAR THERMAL
    • PIPING | PLUMBING | PVF
    • PME COLUMNS
      • Christoph Lohr: Strategic Plumbing Insights
      • David Dexter: Plumbing Talking Points
      • James Dipping: Engineer Viewpoints
      • John Seigenthaler: Renewable Heating Design
      • Lowell Manalo: Plumbing Essentials
      • Misty Guard: Guard on Compliance
  • RADIANT & HYDRONICS
    • RADIANT COMFORT REPORT
    • THE GLITCH & THE FIX
  • INSIGHTS
    • CODES
    • GREEN PLUMBING & MECHANICAL
    • PROJECT PROFILES
    • COLUMNS
      • Codes Corner
      • Natalie Forster: Editorial Opinion
      • Guest Editorial
    • SPONSOR INSIGHTS
  • MEDIA
    • PODCASTS
    • VIDEOS
    • WEBINARS
  • RESOURCES
    • INDUSTRY CALENDAR
    • DIRECTORIES
    • EBOOKS
    • PM BOOKSTORE
    • CE CENTER
    • MARKET RESEARCH
    • CLASSIFIEDS
  • EMAGAZINE
    • EMAGAZINE
    • ARCHIVE ISSUES
    • CONTACT
    • ADVERTISE
    • PME EMAGAZINE ARCHIVES
  • SIGN UP!

Air Conditioning For Wet Heads

By Kelly Faloon
September 3, 2002
Energy-efficient cooling options for radiant or hydronic homes.

As we celebrate the 100th anniversary of air conditioning, the summer of 2002 is bringing many Americans sweltering temperatures and extremely humid air. Couple that with extreme drought conditions in some areas of the country, and you have one miserable summer. If not for Willis Carrier’s invention, we wouldn’t be able to retreat to air-conditioned restaurants, malls and movie theaters to escape the hellish heat.

But there are some homes and businesses that, because they have hydronic or radiant heating systems, aren’t reaping the benefits of Carrier’s invention. It seemed their only option was cut to holes in their walls and add the ductwork needed for a conventional air-conditioning system.

But take heart, Wet Heads. You can put air conditioning into hydronic/ radiant offices and homes without committing to a major renovation.

Just ask Andy Stack, owner of Andy Stack & Sons, Avon, Ohio. He is completing the installation of a mini-duct air-conditioning system in a 10,000-square-foot, radiant-floor heated Lindahl cedar home in Port Clinton, Ohio.

“The design of the home did not allow for a clean installation of conventional forced air along with the radiant floor heating system,” Stack says. “When the homeowner came to our showroom I was able to demonstrate how comfortable, quiet and unobtrusive the Unico system is.” (For more information on Stack’s showroom, see “The Heat’s On” at www.PMmag.com.)

Hydronic Cooling

As radiant heat uses hot water to heat a room, the Unico air-conditioning system uses chilled water to cool the same space.

Stack used three 4-ton chillers with four separate air handlers to provide 12 tons of cooling, sending chilled water throughout the whole house. “With Unico, I was able to divide the house into eight zones -- two Arzel zone systems per air handler,” he explains.

The Unico equipment was also better for the structure of the home, he says, because there wasn’t much room for conventional ductwork. Electronic air cleaners, Broan HRV ventilators and a snowmelt-system for the upper decks completed the project.

While he admits this system is probably more expensive than a conventional forced-air system, Stack says the paybacks are worth it -- lower energy costs, a comfortable home and a quiet system. And the bonus: The air handlers can be used for supplemental heating in the winter.

“This is the first summer the homeowner is using the chilling system, and he’s really happy,” Stack says.

Another central-air option is a SpacePak system, which can cool a home as well as a conventional system, says John Mottinger, president of J.C. Mottinger Associates Inc., a long-time rep of SpacePak.

“What is unique about the system is the ‘ductwork,’ which is really flexible 2-inch tubing that is run in walls and floors and around obstructions,” he explains. “So it can be used to retrofit any building with a wet heat system.”

SpacePak fan coils can be mounted in closets, attics or basements with a minimal amount of construction and mess, saving on labor costs. Conditioned air is delivered into the room through a small 2-inch opening. About 90 percent of the applications take advantage of existing space, he says; even the five-ton model is only 14 1/2 inches in height and can be placed in an attic through a 16-inch centered ceiling joist.

And it’s quiet; it uses sound-attenuating tubes that absorb noise and are used on each 2-inch supply run, Mottinger says.

Because the SpacePak system uses a little more than half of the air that conventional air-conditioning systems use, it removes 30 percent more moisture from the air.

“This dryer air results in better comfort conditions at higher temperatures and can yield savings to the owner on his utility bill,” he explains.

On average, the SpacePak equipment costs about 20 percent to 30 percent more than conventional equipment, Mottinger says, but homeowners will save on labor costs and energy bills.

Other Air-Conditoning Options

A twist on the hydronics concept comes from Invensys Energy Management. Chilled water is run through ceiling-mounted panels that exchange heat from the warm air in the room. The heated water is carried to a chiller, where it is cooled and returned to the ceiling.

The system uses small ducts that directly feed in fresh air. The amount of air to be conditioned is reduced, thus cutting energy costs by 30 percent, the company claims.

Or you can go with a ductless split system. The Japanese invented the concept and brought it to the United States in the early 1980s, explains Sam Vivirito, sales manager for EMI’s Ductless Division. EMI was born in order to compete.

“This system is an alternative to central air conditioning,” he says. “It’s a ‘zone conditioner’ -- there is no need for ductwork, so it can fit into any space that needs cooling.”

The system consists of an indoor air handler and an outdoor condenser, interconnected by refrigerant tubing through a 3-inch hole in the wall. Decorative units can be mounted on the floor, wall, ceiling or recessed (dropped) ceiling.

Vivirito says the system can be a single zone with one condenser and one air handler, or a multizone system with one condenser containing numerous compressors connected to one, two, three or four air handlers. It can generate 9,000 Btus to 48,000 Btus, depending on the application.

And the applications are many: bedrooms, kitchens, family rooms, dining rooms, even room add-ons -- any space that needs to be cooled without adding ductwork.

“EMI’s ductless split system may cost a little more than a forced-air cooling system, but the payback is there,” he explains. “You’re only cooling the areas you want cooled. Since you’re not conditioning the whole house, you’re conserving energy.”

Ductless split systems first started in light commercial applications when the Japanese brought it to this country. But the residential market for this type of system is growing, Vivirito says, primarily because the public is becoming educated about it through the Internet, advertising and manufacturer literature.

Share This Story

Looking for a reprint of this article?
From high-res PDFs to custom plaques, order your copy today!

Kelly june 2015 200

Kelly Faloon was a former editor of Plumbing & Mechanical as well as the BNP Media Plumbing Group’s Integrated Content Development Specialist. She also was a former editor of the Radiant Comfort Guide the Radiant & Hydronics Report — both official publications of the Radiant Professionals Alliance — and twice-monthly Radiant & Hydronics eNews, an enewsletter for anyone interested in the world of heating with hot water.

Her editorial specialties included women in plumbing, recruiting for the trades, green construction techniques, water conservation, water treatment, hydronic heating, radiant heating and cooling, snow melt, solar thermal and geothermal.

After a 3½-year stint at sister publication Supply House Times, Faloon joined the PM staff in December 2001 as senior editor. She was named PM’s managing editor in 2006 and editor in 2013.

Previously, she spent nearly 10 years at CCH, a publishing firm specializing in business and tax law, where she wore many hats — proofreader, writer/editor for a daily tax publication, and Internal Revenue Code editor.

 A native of Michigan’s northern Lower Peninsula, Faloon is a 1986 journalism graduate of Michigan State University. 

Recommended Content

JOIN TODAY
to unlock your recommendations.

Already have an account? Sign In

  • Worker using the Milwaukee Tool SWITCH PACK drain cleaner

    Pipeline profits: Drain cleaning, pipe inspection create opportunities

    Drain cleaning and inspection services offer lucrative...
    Plumbing News
    By: Nicole Krawcke
  • Uponor employee, Arturo Moreno

    The reinvestment in American manufacturing and training

    Plumbing & Mechanical Chief Editor Nicole Krawcke and...
    Plumbing News
    By: Nicole Krawcke and Natalie Forster
  • March 2024 Women in Plumbing hero image of woman engineer overlayed by circle of hexagon shapes with numbers from 1 to 10

    Celebrating 10 Influential Women in the Plumbing Industry

    Celebrating Women's History Month and Women in...
    Plumbing News
    By: Nicole Krawcke
close

1 COMPLIMENTARY ARTICLE(S) LEFT

Loader

Already a Registered User? Sign in now.

Subscribe For Free!
  • eNewsletters
  • Online Registration
  • Subscription Customer Service
  • eMagazine
  • Manage My Preferences

IPEX celebrates grand opening of new Florida distribution center

IPEX celebrates grand opening of new Florida distribution center

NIBCO Press Solutions

NIBCO Press Solutions

AI can boost efficiency and profitability for plumbing, HVAC contractors

AI can boost efficiency and profitability for plumbing, HVAC contractors

Bell & Gossett Illustrates Path to Net-zero at AHR Expo

Bell & Gossett Illustrates Path to Net-zero at AHR Expo

More Videos

Sponsored Content

Sponsored Content is a special paid section where industry companies provide high quality, objective, non-commercial content around topics of interest to the Plumbing & Mechanical audience. All Sponsored Content is supplied by the advertising company and any opinions expressed in this article are those of the author and not necessarily reflect the views of Plumbing & Mechanical or its parent company, BNP Media. Interested in participating in our Sponsored Content section? Contact your local rep!

close
  • J.J. Keller CMV vehicles on road
    Sponsored byJ. J. Keller & Associates, Inc.

    The dash cam game-changer for small business safety

Popular Stories

Figure 1 is a sketch of the flow problems of the current plumbing system.

Hydronic heating glitch solved: Why adding a circulator won't fix primary loop flow issue

The interior of a government building.

President Trump signs executive order promoting skilled trades and apprenticeships

Underfloor heating installation with drain sewer hole in bathroom close up on water floor heating.

Using hydronics to leverage time-of-use electrical rates

PM BEMIS June 25 Free Webinar: Optimizing Plumbing Solutions for Single-Family, Multi-Family & Public Spaces

Events

November 13, 2024

Future Proofing MEP: Navigating the 2026 High Efficiency Water Heating Standards

Join our deep dive into DOE’s new standards so you can future-proof your MEP practice.

EARN: 0.1 ASPE CEU; 1 AIA LU/HSW; 0.1 IACET CEU*; 1 PDH

View All Submit An Event

Poll

Will business be up or down in 2025?

Do you anticipate business in 2025 to be up or down in comparison to 2024?
View Results Poll Archive

Products

The Water Came To A Stop

The Water Came To A Stop

See More Products

Download the FREE Water Conservation, Quality & Safety eBook: Plumbing Trends Increasing Safe Water Availability

Related Articles

  • Air-Conditioning Options For Hydronic Heating Systems

    See More
  • PM Installation Survey: High Velocity Air Conditioning

    See More
  • New York Red Bulls

    The New York Red Bulls pro soccer team adds radiant turf conditioning to new practice facility

    See More
×

Keep your content unclogged with our newsletters!

Stay in the know on the latest plumbing & piping industry trends.

JOIN TODAY!
  • RESOURCES
    • Advertise
    • Contact Us
    • Directories
    • Store
    • Want More
    • Supply House Times
  • SIGN UP TODAY
    • Create Account
    • eMagazine
    • eNewsletter
    • Customer Service
    • Manage Preferences
  • SERVICES
    • Marketing Services
    • Reprints
    • Market Research
    • List Rental
    • Survey/Respondent Access
  • STAY CONNECTED
    • LinkedIn
    • Facebook
    • Instagram
    • YouTube
    • X (Twitter)
  • PRIVACY
    • PRIVACY POLICY
    • TERMS & CONDITIONS
    • DO NOT SELL MY PERSONAL INFORMATION
    • PRIVACY REQUEST
    • ACCESSIBILITY

Copyright ©2025. All Rights Reserved BNP Media.

Design, CMS, Hosting & Web Development :: ePublishing

search
cart
facebook instagram twitter linkedin youtube
  • Sign In
  • Create Account
  • Sign Out
  • My Account
  • NEWS
  • PRODUCTS
  • CONTRACTORS
    • BATH & KITCHEN PRO
    • BUSINESS MANAGEMENT
    • HIGH EFFICIENCY HOMES
    • TECHNOLOGY
    • WATER TREATMENT
    • PMC COLUMNS
      • Dave Yates: Contractor’s Corner
      • John Siegenthaler: Hydronics Workshop
      • Kenny Chapman: The Blue Collar Coach
      • Matt Michel: Service Plumbing Pros
      • Scott Secor: Heating Perceptions
  • ENGINEERS
    • CONTINUING EDUCATION
    • DECARBONIZATION | ELECTRIFICATION
    • FIRE PROTECTION
    • GEOTHERMAL | SOLAR THERMAL
    • PIPING | PLUMBING | PVF
    • PME COLUMNS
      • Christoph Lohr: Strategic Plumbing Insights
      • David Dexter: Plumbing Talking Points
      • James Dipping: Engineer Viewpoints
      • John Seigenthaler: Renewable Heating Design
      • Lowell Manalo: Plumbing Essentials
      • Misty Guard: Guard on Compliance
  • RADIANT & HYDRONICS
    • RADIANT COMFORT REPORT
    • THE GLITCH & THE FIX
  • INSIGHTS
    • CODES
    • GREEN PLUMBING & MECHANICAL
    • PROJECT PROFILES
    • COLUMNS
      • Codes Corner
      • Natalie Forster: Editorial Opinion
      • Guest Editorial
    • SPONSOR INSIGHTS
  • MEDIA
    • PODCASTS
    • VIDEOS
    • WEBINARS
  • RESOURCES
    • INDUSTRY CALENDAR
    • DIRECTORIES
    • EBOOKS
    • PM BOOKSTORE
    • CE CENTER
    • MARKET RESEARCH
    • CLASSIFIEDS
  • EMAGAZINE
    • EMAGAZINE
    • ARCHIVE ISSUES
    • CONTACT
    • ADVERTISE
    • PME EMAGAZINE ARCHIVES
  • SIGN UP!