27 Feb '13, 3am

indirect DHW options #green

You will get some pretty good answers at Heatinghelp.com In the meantime, I can give you my experience with 20-40 unit apartment buildings. The answer is a little different for an older building with a steam boiler. Assuming you have a postwar building with hot water baseboard heat, the most common arrangement was originally a "sidearm" water heater. Many of those all-copper water heaters (like Everhot) are still in service. Most energy-savvy owners would have replaced the sidearm by now because it just doesn't make sense to fire up a 1 mmbtu boiler just for hot water in the summer. In comparison, a 120 100,000 btu gallon commercial water heater costs much less to operate. (I saved over $1200/yr in 20 unit buildings where I made this change in Denver) But commercial tank style heaters only last 8-16 years, and have a energy factor of under 0.60. (you can increase the life ...

Full article: http://www.greenbuildingadvisor.com/community/forum/mecha...

Tweets

Solar Heating Options #green

greenbuildingadvisor.com 22 Feb '13, 8am

Hello, I'm in Westchester NY climate 4. I am considering getting a PV system installed. The system will be approx 10k and ...

What are the sustainable options for re-roofing...

greenhomeguide.com 01 Mar '13, 9pm

The focus on sustainability in the past few years has yielded many new roofing products . To choose the most sustainable r...

5 of the best luxury dining options in St. Petersburg

5 of the best luxury dining options in St. Pete...

aluxurytravelblog.com 24 Feb '13, 11am

5 of the best luxury dining options in St. Petersburg By Kristi Heeps on Feb 24, 2013 in Eastern Europe , Europe , Food an...