Welcome to the Utah Energy Code Blog

FORCED AIR HEATING & COOLING SYSTEMS – ENERGY EFFICIENT DUCT INSTALLATION PRACTICES

June 14, 2024

Previous discussions have reviewed ACCA/ANSI Manual D – Residential Duct Systems, primarily focusing on pressure drops across devices, duct sizing, and fitting design. This discussion will concentrate on installation practices as identified in the SMACNA – HVAC Duct Construction Standard…

IS A RETURN AIR INLET REQUIRED IN EVERY BEDROOM?

June 14, 2024

A Building Inspector recently called asking for clarification on the requirement for return air inlets in bedrooms. The HVAC contractor insists a 1” to 1-1/2” space under the door will provide a path back to return air inlets in virtually every residential application…

DUCT LEAKAGE TESTING

June 14, 2024

Duct leakage testing, or duct blaster testing, is required for new duct systems installed outside the thermal envelope of a home. The current amended Utah energy code requires duct leakage testing for residential HVAC systems with air handlers and those with at least 20% of their duct system (measured by length) located in an attic, crawlspace or outside…

THE LEAST SEXY EFFICIENCY UPGRADE FOR NEW CONSTRUCTION JUST MAY BE ONE OF THE BEST

June 14, 2024

Many years ago, Dr. Energy worked as part of an electric utility solar incentive program. One of the tasks for Dr. Energy was to visit each proposed installation site and confirm that there was not an existing solar array because one of the program requirements was that the project must be preapproved before the installation could happen…

BALANCED MECHANICAL VENTILATION

April 8, 2023

Building science experts have identified reducing air leakage as a key component in improving building energy efficiency and occupant comfort…

THE DEVIL IS IN THE DETAILS

March 15, 2023

As energy codes and above-code energy efficiency certification programs evolve and progress, the natural question is “where do we go from here?” The simple and easy answer is…

2020-2022

Building Air Leakage, Testing, and Mechanical Ventilation
December 20, 2022

Energy & Mechanical Code Failure – Poor Access to HVAC Systems in Attics
August 4, 2022

ACCA Manual J Load Calculations
August 3, 2022

Poor HVAC Airflow – Part 1
June 29, 2022

A Condenser & Heat Pump Clearance Reminder – Impact on Cooling Capacity, Efficiency, and Equipment Durability
June 1, 2022

Questions from an HVAC Contractor – Energy Recovery Ventilators and Make-Up Air
May 12, 2022

Utah’s Residential Energy Code Field Study Shows a Big Opportunity for Cost Savings and Emissions Reductions
April 13, 2022

HVAC Systems, Ventilation, Filtration and COVID-19
February 10, 2022

Drawing Combustion Air out of Air Sealed Buildings – is it Safe?
February 2, 2022

Foil-Faced Bubble Wrap Duct “Insulation”
October 2, 2021

ACCA Residential HVAC Standards: Manual J – Load Calculations, Manual D – Duct Design, and Manual S – Equipment Selection: Part 5
June 24, 2021

ACCA Residential HVAC Standards: Manual J – Load Calculations, Manual D – Duct Design, And Manual S – Equipment Selection: Part 4
June 24, 2021

ACCA Residential HVAC Standards: Manual J – Load Calculations, Manual D – Duct Design, and Manual S – Equipment Selection: Part 3
June 23, 2021

ACCA Residential HVAC Standards: Manual J – Load Calculations, Manual D – Duct Design, and Manual S – Equipment Selection: Part 2
June 24, 2021

ACCA Residential HVAC Standards: Manual J – Load Calculations, Manual D – Duct Design, and Manual S – Equipment Selection: Part 1
June 21, 2021

Introduction to the Energy Code – Is My Project Commercial or Residential?
February 2, 2021

Townhouses and the RES Check Compliance Option
January 14, 2021

Thermal Factors – R-values, U-factors & SHGCs – Consistency on all Construction Documents
September 29, 2020

Untitled Document

Sign-up for our mailing list - Never miss a training

Copyright © 2024 State of Utah - All rights reserved.