Home Contents




Welcome to our home on the World Wide Web.  Please, come in and see how comfortable and efficient it is - just like your home can be with a bit of help from us.  We are licensed in the state of Virginia, USA to dig, build, plumb, wire, drill, heat, cool, ventilate, pave, etc.  Geothermal heat pumps (also called ground-source heat pumps), radiant floors, and clean air are of great interest to us.  Come in an learn.

horizontal rule

Our Mission

To become a regional supplier of products and services dedicated to making homes more efficient, comfortable, and sellable.

horizontal rule

Company Profile

Our founder, Kenneth W. Lambert (CGD, ME), was born in 1942 in Franklin, West Virginia.  Aside from schooling in industrial arts and electronics, he soon applied skills such as carpentry in derby car races, masonry for a residential contractor, drafting and HVAC (heating, ventilation and air conditioning) ingenuity for Westinghouse, and then large-scale commercial construction for the poultry industry.  Then, with his first patent already in hand, he struck out on his own, with his wife as bookkeeper, doing business as K. W. Lambert Construction Company. 

He purchased the family land in Bridgewater, Virginia and turned a cornfield and an apple orchard called Vinegar Hill into Fountainhead Subdivision.  In this subdivision and many other places in the region, Ken has designed and built over 300 homes, over 140 geothermal heating and cooling installations, over 50 solar installations, and 30 radiant floor installations.  Moreover, he designed and built the nation’s first geothermal subdivision composed of 50 homes.  Ken has worked in residential and commercial construction from the islands of the Bahamas to the state of Maryland.  He has brought beauty and efficiency to historic farmhouses, tiny townhouses and luxury homes of 10,000 square feet. 

Ken, along with his wife Beverley, has owned and presided over the company since 1974.  He has the following licenses in Virginia: Class A HVAC Contractor License, Class A Plumbing Contractor License, Class A Electrical Contractor License, Class A Heavy Highway Municipal Sewer and Water Contractor License, Class A Building Contractor License (#2701-014440A) and a Geothermal Drilling License.

In addition to his craftsmanship in building, his creativity in drilling and HVAC has continued to spring forth.  He has obtained a few trademarks with more applied for and several patents with more applied for on geothermal installation and design methods, ground-loop drilling devices, copper ground-loops, water-source ground-loops, refrigerant flow- and charge-control device, and geothermal grouting equipment to make direct exchange and water-source geothermal heat pump installations work successfully.

In his metal shop, Ken designed and built drill rigs and grout machines capable of residential and large-tonnage commercial ground loop installations.   He developed casing advancer techniques to assist the small-hole geo driller in getting to the bottom of every hole with a ground loop (a difficult alignment task in cavity, cavern, fractured rock w/collapsing sand, etc.) by inserting the ground loop into the casing then withdrawing the casing as the hole collapses against the loop and then grouting from the bottom up.   This is a new innovation for production drilling.  The name of the company soon had to grow to reflect the diversity of skills, accomplishments, products, and services.  

The Association of Energy Engineers (AEE) in conjunction with the Geothermal Heat Pump Consortium and the International Ground Source Heat Pump Association (IGSHPA) has granted Ken the title of Certified GeoExchange Designer for having completed the prescribed standards for certification and having demonstrated a high level of competence and ethical fitness.  Ken is the one engineers hire to install geothermal heating and cooling equipment in their homes and offices.  One dean of an engineering college of a major Virginia public university has one of our systems in his home in central Virginia.  The College of Integrated Science and Technology at James Madison University in Harrisonburg, Virginia has one of our systems in their offices.  

Ken is a member of the following professional organizations and has held leadership positions in some:

American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc. (ASHRAE)

American Association of Energy Engineers (AEE)

Refrigeration Service Engineer’s Society (RSES).

Geothermal Heat Pump Consortium (GHPC).

International Ground-Source Heat Pump Association (IGSHPA).

National Association of Home Builders of the United States (NAHB).

Virginia Association of Home Builders (VAAHB)

Shenandoah Valley Home Builders’ Association (SVHBA).

Commercial Builders Council of the National Association of Home Builders.

Massanutten Technical Center Foundation Board

Now, use the various buttons on this site to explore.  You will find information on products and services and opportunities to give feedback and to contact us.  Bookmark our site or add it to Favorites in your Internet browser software before you forget.  Enjoy!

horizontal rule

Contact Information

We would like to hear from you.  Let us be your contractor, supplier, consultant, or even your new employer.  Those sending resumes will please include salary requirements in a cover letter.

Postal address
405 Mount Crawford Avenue, Bridgewater, VA 22812
Electronic mail
All Information: info@EarthFurnace.com
Initial web design by Stephen Lambert


[ Home ] News ] Products ] Services ]News ] Products ] Services ]

Send mail to info@EarthFurnace.com with questions or comments about this web site.
Last modified: November 03, 2005