This is the soft copy for the August edition of Cooling India, an HVAC trade journal for the country. The editor reached out to me to do a piece for this issue. I chose to research the longstanding relationship between the US and India, the world’s two largest democracies, and their impact on building performance standards and energy efficiency. The article begins on page 22.
Eco Property, Episode 04: NextGen Heating
I was asked to go to Boston and visit an engineer who created a heating system for his house that’s 60% more efficient than the old system. I’m proud to see his hard work come to life. Great stuff.
“There are a lot of people in the Residential Energy Efficiency field who talk about treating the home as a system. However, when asked who is responsible for the homes envelope, all the Energy Auditors and HVAC Technicians, I know, point at the other group. As further proof that no one is taking responsibility; less than 1% of the homes we have tested have HVAC equipment with outputs that are within 15% of the actual load presented by the home.
Ryan Rex is one of the few visionaries, in the industry. He realizes the way we now promote residential energy efficiency is very counterproductive.
He realizes the homes envelope needs to be evaluated way in advance of any anticipated HVAC replacement. The envelopes energy efficiency can then be compared to homes in the neighborhood, to those in like Design temperature areas and all other previously tested homes across the country. If the home’s envelope is below average, retrofit work needs to be performed. After the retrofit, the homes envelope efficiency needs to be measured again; this will provide the exact percentage of efficiency gained by the envelope work and even more importantly, provide the precise sizing requirements for any replacement HVAC equipment. Potential savings from energy efficiency measures are often analyzed using energy simulation software; this is just not accurate enough to take advantage of all the possible savings.
The advantages of precisely matching HVAC equipment to the actual load (within 15%):
- Energy savings of 3%-10% (per DOE)
- Lowers the purchase cost of HVAC equipment
- Increased comfort in home(can usually remedy hard to heat/cool areas)
- Existing duct system will probably now be adequately sized
- Longer life expectancy of HVAC equipment with fewer repairs
- Precision sizing is needed to get the full potential out of multiple speed equipment
Ryan realizes there needs to be a paradigm shift in the way we now try to promote residential energy efficiency. In spite of all the money that Government, Utilities and homeowners have spent to improve residential energy efficiency, there has been very little progress made in the existing home arena.
Ryan is one of the people who will lead the residential energy efficiency effort forward.”
“Ryan Rex’s expertise in green building is as compelling as his passion for green building. And his knowledge around sustainable home improvement products is impressive – especially in light of the breadth and diversity of this category.”
Sr. Manager of Environmental Innovation
The Home Depot
Looking to save energy dollars at home? Take an insider’s look into the sustainable (green) products and technologies available at Home Depot.
On a trip to New York City, I had a chance to meet with two inventors, Marty Spindel and Nadine Cino, who own and operate the Tyga Box companies. They were great to work with during their interview.
Afterwards, Nadine gave me a second interview for the podcast to talk about her sustainable company and how they are drastically reducing the use of cardboard moving boxes.
Green Time Episode 102: Sustainable Corporate Moving Services
I recently visited New York City and met with Bob Logan and Walter Fidali of the Senduzy Corp. to discuss their careers as inventors. Bob and Walter have numerous inventions that are currently in production and should be hitting the shelves soon.
After the interview Bob was kind enough to say a few words about his experience with me and the interview itself. This is a testimonial from Bob, and to him I say, thank you.