This house, located in Bethesda, MD, was designed in the 1950s by internationally renowned modernist architect Marcel Breuer.  It is known as the Seymour Krieger House and is listed on the National Register of Historic Places.

The Seymour Krieger House currently is owned by an architect, and he wanted to restore the mechanical system while keeping the architectural integrity of the structure intact.

The house was originally heated by a radiant floor heating system.  The original boiler was still in place and operational, but the wrought iron radiant piping has corroded and was leaking in multiple locations.

We discussed multiple alternatives but in the end, the owner decided to go back with radiant floor heat.

The bluestone floor tiles were painstakingly numbered and removed.  The concrete overpour, along with the original wrought iron radiant tubing, was removed.

We installed the new Rehau PEX radiant tubing system, and a new concrete slab was poured.  The flagstones were carefully placed back in exactly their original positions.

We updated the entire mechanical system by installing a new Triangle-Tube boiler, HTP DHW tank, Viessmann solar heat and DHW system, and new Carrier high-efficiency AC system.

We re-piped and re-controlled the radiant system to allow for multiple zones.  The Viessmann solar system will contribute to space heat when the DHW load is satisfied.

The clients were a joy to work for and appreciated the hard work done by my crew on this difficult and challenging project.

— Dan Foley

 

 

 

We designed and installed the mechanical system in this new home on the shores of Lake Anna, Virginia.  The house was designed by architect David Peabody, whom we’ve worked with on multiple projects over the last five years.

The project features Uponor radiant floor heating, two Lochinvar Knight boilers, DHW through an HTP stainless steel tank, chilled water cooling through two Unico chillers, tekmar and Taco controls, Nortec steam humidifiers and ventialtion through two Renewaire ERV’s.

Since this project is about a 1-1/2 hour drive from our shop, I designed redudancy into the mechanical system to minimize the chance of no-heat or no-cooling.

 

 

 

This beautiful Italianate farmhouse was built in 1860 and has been in the same family ever since. It’s located in Thurmont, Maryland, just north of Frederick.

 

The current owner’s father was a steamfitter and installed the steam heating system in the 1940s. The home originally had two Kewanee steel oil boilers. We replaced one several years ago and returned again to replace the second boiler.

 

We specified a Burnham Mega Steam cast iron oil boiler with a Beckett burner. Our lead fitter Brian Golden, technician Slavko Nisevic, and their talented crew did a masterful job piping this boiler, with two risers feeding a drop header to slow down the velocity of the steam in this one-pipe system. We also added new main vents and radiator vents to complete the restoration of this old system.  –Dan Foley