About Energydesignsystems
EDS is the easiest, fastest, and most accurate residential heat loss and heat gain block Load Calculator on the planet.

Founded in 2001, Energy Design Systems (EDS), an industry leader in providing and implementing HVAC engineering and sales systems; and ground-breaking marketing programs for over 20 years. EDS serves manufacturers, distributors, and contractors associated with the HVAC industry in North America. EDS allows service contractors to operate their business from anywhere. With the help of Load Calculator and Home Auditor, the company has revolutionized the way of carrying out HACK system calculations.
The fastest load calculator available. Heating systems sized in accordance with ACCA Manual J 8th edition Heat Loss Load Calculation formulas. This intuitive sales tool can be mastered in minutes and help differentiate you from your competition when utilized appropriately as part of an integrated Buyer Guidance (Sales) Process. This is a critical step in the Buyer Guidance Process that over 80% of all salespeople fail to do. This simple step will help you legally and ethically discredit contractors that size systems based on existing equipment, square footage or unreliable and inaccurate rules of thumb. The process can be performed remotely to estimate the load and then trued-up once in the home.
Show your customer exactly how and where they can save money by using your services. EDS Auditor is the quickest, most contractor and consumer friendly, supremely accurate heat loss/heat gain load calculation and home performance modeling software on the planet! All the calculations are based on industry standards from ACCA, AHRI, and the DOE. It is one of the only software programs that allows a user to calibrate and true up energy calculations to the customer’s actual utility bills.
Know more https://www.eds.tech
Featured articles and news
Combating burnout.
The 5 elements of seiri, seiton, seiso, seiketsu and shitsuke.
Shading for housing, a design guide
A look back at embedding a new culture of shading.
The Architectural Technology Awards
The AT Awards 2025 are open for entries!
ECA Blueprint for Electrification
The 'mosaic of interconnected challenges' and how to deliver the UK’s Transition to Clean Power.
Grenfell Tower Principal Contractor Award notice
Tower repair and maintenance contractor announced as demolition contractor.
Passivhaus social homes benefit from heat pump service
Sixteen new homes designed and built to achieve Passivhaus constructed in Dumfries & Galloway.
CABE Publishes Results of 2025 Building Control Survey
Concern over lack of understanding of how roles have changed since the introduction of the BSA 2022.
British Architectural Sculpture 1851-1951
A rich heritage of decorative and figurative sculpture. Book review.
A programme to tackle the lack of diversity.
Independent Building Control review panel
Five members of the newly established, Grenfell Tower Inquiry recommended, panel appointed.
Welsh Recharging Electrical Skills Charter progresses
ECA progressing on the ‘asks’ of the Recharging Electrical Skills Charter at the Senedd in Wales.
A brief history from 1890s to 2020s.
CIOB and CORBON combine forces
To elevate professional standards in Nigeria’s construction industry.
Amendment to the GB Energy Bill welcomed by ECA
Move prevents nationally-owned energy company from investing in solar panels produced by modern slavery.
Gregor Harvie argues that AI is state-sanctioned theft of IP.
Experimental AI housing target help for councils
Experimental AI could help councils meet housing targets by digitising records.